diff options
author | Scott Rifenbark <srifenbark@gmail.com> | 2018-01-29 15:18:03 -0800 |
---|---|---|
committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2018-02-14 15:25:29 +0000 |
commit | ae06e04cd225d2c2147ca355e2dd39b4f6cf6775 (patch) | |
tree | c920e85262a91e7626279e7dcbbd56a299919f49 /documentation | |
parent | ebc7de094881dd8f2450aa4fdf548f2e9c835df1 (diff) | |
download | poky-ae06e04cd225d2c2147ca355e2dd39b4f6cf6775.tar.gz |
documentation: Created new "Getting Started" manual.
Creation involved removing the overview-manual and replacing it
with the getting-started manual. All links to the string
"&YOCTO_DOCS_OVERVIEW_URL" had to be replaced with
"&YOCTO_DOCS_GS_URL" across the entire YP manual set. I renamed
files used to create the manual with prefixes suited for the
new manual name, which is "Getting Started With Yocto Project".
The style sheet for the new manual needed updating to display the
new .PNG image for the title page. The mega-manual file had to
be updated to include the files. The mega-manual.sed file had
to be updated to include the new manual and not use the overview
manual.
(From yocto-docs rev: 6c7abf9192390121000f577d6c98f259d290d15d)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'documentation')
148 files changed, 10147 insertions, 125 deletions
diff --git a/documentation/Makefile b/documentation/Makefile index 5e166a2ba0..6f8e0d491b 100644 --- a/documentation/Makefile +++ b/documentation/Makefile | |||
@@ -84,10 +84,10 @@ | |||
84 | # for the 'denzil' branch. | 84 | # for the 'denzil' branch. |
85 | # | 85 | # |
86 | 86 | ||
87 | ifeq ($(DOC),overview-manual) | 87 | ifeq ($(DOC),getting-started) |
88 | XSLTOPTS = --xinclude | 88 | XSLTOPTS = --xinclude |
89 | ALLPREQ = html eclipse tarball | 89 | ALLPREQ = html eclipse tarball |
90 | TARFILES = overview-style.css overview-manual.html figures/overview-title.png \ | 90 | TARFILES = getting-started-style.css getting-started.html figures/getting-started-title.png \ |
91 | figures/git-workflow.png figures/source-repos.png figures/index-downloads.png \ | 91 | figures/git-workflow.png figures/source-repos.png figures/index-downloads.png \ |
92 | figures/yp-download.png figures/yocto-environment-ref.png figures/user-configuration.png \ | 92 | figures/yp-download.png figures/yocto-environment-ref.png figures/user-configuration.png \ |
93 | figures/layer-input.png figures/source-input.png figures/package-feeds.png \ | 93 | figures/layer-input.png figures/source-input.png figures/package-feeds.png \ |
@@ -268,7 +268,7 @@ TARFILES = mega-manual.html mega-style.css \ | |||
268 | figures/sdk-devtool-add-flow.png figures/sdk-installed-extensible-sdk-directory.png \ | 268 | figures/sdk-devtool-add-flow.png figures/sdk-installed-extensible-sdk-directory.png \ |
269 | figures/sdk-devtool-modify-flow.png figures/sdk-eclipse-dev-flow.png \ | 269 | figures/sdk-devtool-modify-flow.png figures/sdk-eclipse-dev-flow.png \ |
270 | figures/sdk-devtool-upgrade-flow.png figures/bitbake-build-flow.png figures/ypqs-title.png \ | 270 | figures/sdk-devtool-upgrade-flow.png figures/bitbake-build-flow.png figures/ypqs-title.png \ |
271 | figures/overview-title.png | 271 | figures/getting-started-title.png |
272 | endif | 272 | endif |
273 | 273 | ||
274 | MANUALS = $(DOC)/$(DOC).html | 274 | MANUALS = $(DOC)/$(DOC).html |
@@ -417,11 +417,11 @@ eclipse: eclipse-generate eclipse-resolve-links | |||
417 | .PHONY : eclipse-generate eclipse-resolve-links | 417 | .PHONY : eclipse-generate eclipse-resolve-links |
418 | 418 | ||
419 | eclipse-generate: | 419 | eclipse-generate: |
420 | ifeq ($(filter $(DOC), overview-manual sdk-manual bsp-guide dev-manual kernel-dev profile-manual ref-manual yocto-project-qs),) | 420 | ifeq ($(filter $(DOC), getting-started sdk-manual bsp-guide dev-manual kernel-dev profile-manual ref-manual yocto-project-qs),) |
421 | @echo " " | 421 | @echo " " |
422 | @echo "ERROR: You can only create eclipse documentation" | 422 | @echo "ERROR: You can only create eclipse documentation" |
423 | @echo " of the following documentation parts:" | 423 | @echo " of the following documentation parts:" |
424 | @echo " - overview-manual" | 424 | @echo " - getting-started" |
425 | @echo " - sdk-manual" | 425 | @echo " - sdk-manual" |
426 | @echo " - bsp-guide" | 426 | @echo " - bsp-guide" |
427 | @echo " - dev-manual" | 427 | @echo " - dev-manual" |
diff --git a/documentation/bsp-guide/bsp.xml b/documentation/bsp-guide/bsp.xml index 7d3345e06a..b52366adf4 100644 --- a/documentation/bsp-guide/bsp.xml +++ b/documentation/bsp-guide/bsp.xml | |||
@@ -55,7 +55,7 @@ | |||
55 | To help understand the BSP layer concept, consider the BSPs that the | 55 | To help understand the BSP layer concept, consider the BSPs that the |
56 | Yocto Project supports and provides with each release. | 56 | Yocto Project supports and provides with each release. |
57 | You can see the layers in the | 57 | You can see the layers in the |
58 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink> | 58 | <ulink url='&YOCTO_DOCS_GS_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink> |
59 | through a web interface at | 59 | through a web interface at |
60 | <ulink url='&YOCTO_GIT_URL;/cgit/cgit.cgi'></ulink>. | 60 | <ulink url='&YOCTO_GIT_URL;/cgit/cgit.cgi'></ulink>. |
61 | If you go to that interface, you will find near the bottom of the list | 61 | If you go to that interface, you will find near the bottom of the list |
@@ -1415,7 +1415,7 @@ | |||
1415 | Thus, the build system can build the corresponding recipe and include | 1415 | Thus, the build system can build the corresponding recipe and include |
1416 | the component in the image. | 1416 | the component in the image. |
1417 | See the | 1417 | See the |
1418 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#enabling-commercially-licensed-recipes'>Enabling Commercially Licensed Recipes</ulink>" | 1418 | "<ulink url='&YOCTO_DOCS_GS_URL;#enabling-commercially-licensed-recipes'>Enabling Commercially Licensed Recipes</ulink>" |
1419 | section in the Yocto Project Overview Manual for details on how | 1419 | section in the Yocto Project Overview Manual for details on how |
1420 | to use these variables.</para> | 1420 | to use these variables.</para> |
1421 | <para>If you build as you normally would, without | 1421 | <para>If you build as you normally would, without |
@@ -1486,7 +1486,7 @@ | |||
1486 | 1486 | ||
1487 | <para> | 1487 | <para> |
1488 | Designed to have a command interface somewhat like | 1488 | Designed to have a command interface somewhat like |
1489 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink>, each | 1489 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink>, each |
1490 | tool is structured as a set of sub-commands under a | 1490 | tool is structured as a set of sub-commands under a |
1491 | top-level command. | 1491 | top-level command. |
1492 | The top-level command (<filename>yocto-bsp</filename> | 1492 | The top-level command (<filename>yocto-bsp</filename> |
diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml index 0c2101fde9..8b97c715d7 100644 --- a/documentation/dev-manual/dev-manual-common-tasks.xml +++ b/documentation/dev-manual/dev-manual-common-tasks.xml | |||
@@ -1507,7 +1507,7 @@ | |||
1507 | </itemizedlist> | 1507 | </itemizedlist> |
1508 | <note> | 1508 | <note> |
1509 | For information on recipe syntax, see the | 1509 | For information on recipe syntax, see the |
1510 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#recipe-syntax'>Recipe Syntax</ulink>" | 1510 | "<ulink url='&YOCTO_DOCS_GS_URL;#recipe-syntax'>Recipe Syntax</ulink>" |
1511 | section in the Yocto Project Overview Manual. | 1511 | section in the Yocto Project Overview Manual. |
1512 | </note> | 1512 | </note> |
1513 | </para> | 1513 | </para> |
@@ -1798,7 +1798,7 @@ | |||
1798 | 1798 | ||
1799 | <para> | 1799 | <para> |
1800 | You can find more information about the build process in | 1800 | You can find more information about the build process in |
1801 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#overview-development-environment'>The Yocto Project Development Environment</ulink>" | 1801 | "<ulink url='&YOCTO_DOCS_GS_URL;#overview-development-environment'>The Yocto Project Development Environment</ulink>" |
1802 | chapter of the Yocto Project Overview Manual. | 1802 | chapter of the Yocto Project Overview Manual. |
1803 | </para> | 1803 | </para> |
1804 | </section> | 1804 | </section> |
@@ -1815,7 +1815,7 @@ | |||
1815 | Your recipe must have a <filename>SRC_URI</filename> variable | 1815 | Your recipe must have a <filename>SRC_URI</filename> variable |
1816 | that points to where the source is located. | 1816 | that points to where the source is located. |
1817 | For a graphical representation of source locations, see the | 1817 | For a graphical representation of source locations, see the |
1818 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#sources-dev-environment'>Sources</ulink>" | 1818 | "<ulink url='&YOCTO_DOCS_GS_URL;#sources-dev-environment'>Sources</ulink>" |
1819 | section in the Yocto Project Overview Manual. | 1819 | section in the Yocto Project Overview Manual. |
1820 | </para> | 1820 | </para> |
1821 | 1821 | ||
@@ -2128,7 +2128,7 @@ | |||
2128 | containing the current checksum. | 2128 | containing the current checksum. |
2129 | For more explanation and examples of how to set the | 2129 | For more explanation and examples of how to set the |
2130 | <filename>LIC_FILES_CHKSUM</filename> variable, see the | 2130 | <filename>LIC_FILES_CHKSUM</filename> variable, see the |
2131 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#usingpoky-configuring-LIC_FILES_CHKSUM'>Tracking License Changes</ulink>" | 2131 | "<ulink url='&YOCTO_DOCS_GS_URL;#usingpoky-configuring-LIC_FILES_CHKSUM'>Tracking License Changes</ulink>" |
2132 | section in the Yocto Project Overview Manual.</para> | 2132 | section in the Yocto Project Overview Manual.</para> |
2133 | <para>To determine the correct checksum string, you | 2133 | <para>To determine the correct checksum string, you |
2134 | can list the appropriate files in the | 2134 | can list the appropriate files in the |
@@ -2275,7 +2275,7 @@ | |||
2275 | automatically add a runtime dependency to "mypackage" on | 2275 | automatically add a runtime dependency to "mypackage" on |
2276 | "example"). | 2276 | "example"). |
2277 | See the | 2277 | See the |
2278 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 2278 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
2279 | in the Yocto Project Overview Manual for further details. | 2279 | in the Yocto Project Overview Manual for further details. |
2280 | </para> | 2280 | </para> |
2281 | </section> | 2281 | </section> |
@@ -3211,7 +3211,7 @@ | |||
3211 | The variable | 3211 | The variable |
3212 | <filename><ulink url='&YOCTO_DOCS_REF_URL;#var-LIC_FILES_CHKSUM'>LIC_FILES_CHKSUM</ulink></filename> | 3212 | <filename><ulink url='&YOCTO_DOCS_REF_URL;#var-LIC_FILES_CHKSUM'>LIC_FILES_CHKSUM</ulink></filename> |
3213 | is used to track source license changes as described in the | 3213 | is used to track source license changes as described in the |
3214 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#usingpoky-configuring-LIC_FILES_CHKSUM'>Tracking License Changes</ulink>" | 3214 | "<ulink url='&YOCTO_DOCS_GS_URL;#usingpoky-configuring-LIC_FILES_CHKSUM'>Tracking License Changes</ulink>" |
3215 | section in the Yocto Project Overview Manual. | 3215 | section in the Yocto Project Overview Manual. |
3216 | You can quickly create Autotool-based recipes in a manner similar to the previous example. | 3216 | You can quickly create Autotool-based recipes in a manner similar to the previous example. |
3217 | </para> | 3217 | </para> |
@@ -3418,7 +3418,7 @@ | |||
3418 | allows runtime dependencies between packages | 3418 | allows runtime dependencies between packages |
3419 | to be added automatically. | 3419 | to be added automatically. |
3420 | See the | 3420 | See the |
3421 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 3421 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
3422 | section in the Yocto Project Overview Manual | 3422 | section in the Yocto Project Overview Manual |
3423 | for more information. | 3423 | for more information. |
3424 | </para></listitem> | 3424 | </para></listitem> |
@@ -4543,7 +4543,7 @@ | |||
4543 | architectures. | 4543 | architectures. |
4544 | <note> | 4544 | <note> |
4545 | For more information on x32 psABI, see the | 4545 | For more information on x32 psABI, see the |
4546 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#x32'>x32 psABI</ulink>" | 4546 | "<ulink url='&YOCTO_DOCS_GS_URL;#x32'>x32 psABI</ulink>" |
4547 | section in the Yocto Project Overview Manual. | 4547 | section in the Yocto Project Overview Manual. |
4548 | </note> | 4548 | </note> |
4549 | To use the x32 psABI, you need to edit your | 4549 | To use the x32 psABI, you need to edit your |
@@ -5217,7 +5217,7 @@ | |||
5217 | can use an existing file provided by the Wic installation. | 5217 | can use an existing file provided by the Wic installation. |
5218 | As shipped, kickstart files can be found in the | 5218 | As shipped, kickstart files can be found in the |
5219 | Yocto Project | 5219 | Yocto Project |
5220 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 5220 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
5221 | in the following two locations: | 5221 | in the following two locations: |
5222 | <literallayout class='monospaced'> | 5222 | <literallayout class='monospaced'> |
5223 | poky/meta-yocto-bsp/wic | 5223 | poky/meta-yocto-bsp/wic |
@@ -7347,7 +7347,7 @@ Some notes from Cal: | |||
7347 | 7347 | ||
7348 | <para> | 7348 | <para> |
7349 | Because the OpenEmbedded build system uses | 7349 | Because the OpenEmbedded build system uses |
7350 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#overview-checksums'>signatures</ulink>", | 7350 | "<ulink url='&YOCTO_DOCS_GS_URL;#overview-checksums'>signatures</ulink>", |
7351 | which are unique to a given build, the build system | 7351 | which are unique to a given build, the build system |
7352 | knows when to rebuild packages. | 7352 | knows when to rebuild packages. |
7353 | All the inputs into a given task are represented by a | 7353 | All the inputs into a given task are represented by a |
@@ -7451,7 +7451,7 @@ Some notes from Cal: | |||
7451 | 7451 | ||
7452 | <para> | 7452 | <para> |
7453 | For more information on shared state, see the | 7453 | For more information on shared state, see the |
7454 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>Shared State Cache</ulink>" | 7454 | "<ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>Shared State Cache</ulink>" |
7455 | section in the Yocto Project Overview Manual. | 7455 | section in the Yocto Project Overview Manual. |
7456 | </para> | 7456 | </para> |
7457 | </note> | 7457 | </note> |
@@ -7696,7 +7696,7 @@ Some notes from Cal: | |||
7696 | <filename>connman.inc</filename> file in the | 7696 | <filename>connman.inc</filename> file in the |
7697 | <filename>meta/recipes-connectivity/connman/</filename> | 7697 | <filename>meta/recipes-connectivity/connman/</filename> |
7698 | directory of the <filename>poky</filename> | 7698 | directory of the <filename>poky</filename> |
7699 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#yocto-project-repositories'>source repository</ulink>. | 7699 | <ulink url='&YOCTO_DOCS_GS_URL;#yocto-project-repositories'>source repository</ulink>. |
7700 | You can also find examples in | 7700 | You can also find examples in |
7701 | <filename>meta/classes/kernel.bbclass</filename>. | 7701 | <filename>meta/classes/kernel.bbclass</filename>. |
7702 | </para> | 7702 | </para> |
@@ -9162,7 +9162,7 @@ Some notes from Cal: | |||
9162 | Enabling build history as previously described causes the | 9162 | Enabling build history as previously described causes the |
9163 | OpenEmbedded build system to collect build output information | 9163 | OpenEmbedded build system to collect build output information |
9164 | and commit it as a single commit to a local | 9164 | and commit it as a single commit to a local |
9165 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink> | 9165 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink> |
9166 | repository. | 9166 | repository. |
9167 | <note> | 9167 | <note> |
9168 | Enabling build history increases your build times slightly, | 9168 | Enabling build history increases your build times slightly, |
@@ -11024,7 +11024,7 @@ Some notes from Cal: | |||
11024 | ${BUILDDIR}/tmp/stamps/i586-poky-linux/db/6.0.30-r1.do_fetch.sigdata.7c048c18222b16ff0bcee2000ef648b1 | 11024 | ${BUILDDIR}/tmp/stamps/i586-poky-linux/db/6.0.30-r1.do_fetch.sigdata.7c048c18222b16ff0bcee2000ef648b1 |
11025 | </literallayout> | 11025 | </literallayout> |
11026 | For tasks that are accelerated through the shared state | 11026 | For tasks that are accelerated through the shared state |
11027 | (<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>sstate</ulink>) | 11027 | (<ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>sstate</ulink>) |
11028 | cache, an additional <filename>siginfo</filename> file | 11028 | cache, an additional <filename>siginfo</filename> file |
11029 | is written into | 11029 | is written into |
11030 | <ulink url='&YOCTO_DOCS_REF_URL;#var-SSTATE_DIR'><filename>SSTATE_DIR</filename></ulink> | 11030 | <ulink url='&YOCTO_DOCS_REF_URL;#var-SSTATE_DIR'><filename>SSTATE_DIR</filename></ulink> |
@@ -11133,7 +11133,7 @@ Some notes from Cal: | |||
11133 | <filename>-c</filename>, BitBake will only run the task if it | 11133 | <filename>-c</filename>, BitBake will only run the task if it |
11134 | considers it "out of date". | 11134 | considers it "out of date". |
11135 | See the | 11135 | See the |
11136 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</ulink>" | 11136 | "<ulink url='&YOCTO_DOCS_GS_URL;#stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</ulink>" |
11137 | section in the Yocto Project Overview Manual for how BitBake | 11137 | section in the Yocto Project Overview Manual for how BitBake |
11138 | determines whether a task is "out of date". | 11138 | determines whether a task is "out of date". |
11139 | </para> | 11139 | </para> |
diff --git a/documentation/dev-manual/dev-manual-newbie.xml b/documentation/dev-manual/dev-manual-newbie.xml index 638d9112c7..acbdc280a4 100644 --- a/documentation/dev-manual/dev-manual-newbie.xml +++ b/documentation/dev-manual/dev-manual-newbie.xml | |||
@@ -99,7 +99,7 @@ | |||
99 | with the OpenEmbedded build system is advisable. | 99 | with the OpenEmbedded build system is advisable. |
100 | Of the SCMs BitBake supports, the | 100 | Of the SCMs BitBake supports, the |
101 | Yocto Project team strongly recommends using | 101 | Yocto Project team strongly recommends using |
102 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink>. | 102 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink>. |
103 | Git is a distributed system that is easy to backup, | 103 | Git is a distributed system that is easy to backup, |
104 | allows you to work remotely, and then connects back to the | 104 | allows you to work remotely, and then connects back to the |
105 | infrastructure. | 105 | infrastructure. |
@@ -311,7 +311,7 @@ | |||
311 | <itemizedlist> | 311 | <itemizedlist> |
312 | <listitem><para> | 312 | <listitem><para> |
313 | Use | 313 | Use |
314 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink> | 314 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink> |
315 | as the source control system. | 315 | as the source control system. |
316 | </para></listitem> | 316 | </para></listitem> |
317 | <listitem><para> | 317 | <listitem><para> |
@@ -325,7 +325,7 @@ | |||
325 | Separate the project's Metadata and code by using | 325 | Separate the project's Metadata and code by using |
326 | separate Git repositories. | 326 | separate Git repositories. |
327 | See the | 327 | See the |
328 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink>" | 328 | "<ulink url='&YOCTO_DOCS_GS_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink>" |
329 | section for information on these repositories. | 329 | section for information on these repositories. |
330 | See the | 330 | See the |
331 | "<link linkend='working-with-yocto-project-source-files'>Working With Yocto Project Source Files</link>" | 331 | "<link linkend='working-with-yocto-project-source-files'>Working With Yocto Project Source Files</link>" |
@@ -549,7 +549,7 @@ | |||
549 | pull the change into the component's upstream repository. | 549 | pull the change into the component's upstream repository. |
550 | You do this by pushing to a contribution repository that is upstream. | 550 | You do this by pushing to a contribution repository that is upstream. |
551 | See the | 551 | See the |
552 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#workflows'>Workflows</ulink>" | 552 | "<ulink url='&YOCTO_DOCS_GS_URL;#workflows'>Workflows</ulink>" |
553 | section in the Yocto Project Overview Manual for additional | 553 | section in the Yocto Project Overview Manual for additional |
554 | concepts on working in the Yocto Project development environment. | 554 | concepts on working in the Yocto Project development environment. |
555 | </para> | 555 | </para> |
@@ -749,7 +749,7 @@ | |||
749 | </para></listitem> | 749 | </para></listitem> |
750 | <listitem><para> | 750 | <listitem><para> |
751 | <emphasis>Search by File:</emphasis> | 751 | <emphasis>Search by File:</emphasis> |
752 | Using <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink>, | 752 | Using <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink>, |
753 | you can enter the following command to bring up a | 753 | you can enter the following command to bring up a |
754 | short list of all commits against a specific file: | 754 | short list of all commits against a specific file: |
755 | <literallayout class='monospaced'> | 755 | <literallayout class='monospaced'> |
diff --git a/documentation/dev-manual/dev-manual-start.xml b/documentation/dev-manual/dev-manual-start.xml index 27237c0d20..356abdf0a8 100644 --- a/documentation/dev-manual/dev-manual-start.xml +++ b/documentation/dev-manual/dev-manual-start.xml | |||
@@ -260,12 +260,12 @@ | |||
260 | <listitem><para> | 260 | <listitem><para> |
261 | For concepts and introductory information about Git as it | 261 | For concepts and introductory information about Git as it |
262 | is used in the Yocto Project, see the | 262 | is used in the Yocto Project, see the |
263 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink>" | 263 | "<ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink>" |
264 | section in the Yocto Project Overview Manual. | 264 | section in the Yocto Project Overview Manual. |
265 | </para></listitem> | 265 | </para></listitem> |
266 | <listitem><para> | 266 | <listitem><para> |
267 | For concepts on Yocto Project source repositories, see the | 267 | For concepts on Yocto Project source repositories, see the |
268 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink>" | 268 | "<ulink url='&YOCTO_DOCS_GS_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink>" |
269 | section in the Yocto Project Overview Manual." | 269 | section in the Yocto Project Overview Manual." |
270 | </para></listitem> | 270 | </para></listitem> |
271 | </itemizedlist> | 271 | </itemizedlist> |
@@ -277,7 +277,7 @@ | |||
277 | 277 | ||
278 | <para> | 278 | <para> |
279 | Working from a copy of the upstream Yocto Project | 279 | Working from a copy of the upstream Yocto Project |
280 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 280 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
281 | is the preferred method for obtaining and using a Yocto Project | 281 | is the preferred method for obtaining and using a Yocto Project |
282 | release. | 282 | release. |
283 | You can view the Yocto Project Source Repositories at | 283 | You can view the Yocto Project Source Repositories at |
@@ -306,7 +306,7 @@ | |||
306 | <listitem><para> | 306 | <listitem><para> |
307 | <emphasis>Find the URL Used to Clone the Repository:</emphasis> | 307 | <emphasis>Find the URL Used to Clone the Repository:</emphasis> |
308 | At the bottom of the page, note the URL used to | 308 | At the bottom of the page, note the URL used to |
309 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git-commands-clone'>clone</ulink> | 309 | <ulink url='&YOCTO_DOCS_GS_URL;#git-commands-clone'>clone</ulink> |
310 | that repository (e.g. | 310 | that repository (e.g. |
311 | <filename>&YOCTO_GIT_URL;/poky</filename>). | 311 | <filename>&YOCTO_GIT_URL;/poky</filename>). |
312 | <note> | 312 | <note> |
@@ -466,7 +466,7 @@ | |||
466 | 466 | ||
467 | <para> | 467 | <para> |
468 | You create your Source Directory by using | 468 | You create your Source Directory by using |
469 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink> to clone a local | 469 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink> to clone a local |
470 | copy of the upstream <filename>poky</filename> repository. | 470 | copy of the upstream <filename>poky</filename> repository. |
471 | <note><title>Tip</title> | 471 | <note><title>Tip</title> |
472 | The preferred method of getting the Yocto Project Source | 472 | The preferred method of getting the Yocto Project Source |
@@ -741,7 +741,7 @@ | |||
741 | <ulink url='&YOCTO_DOCS_REF_URL;#build-directory'>Build Directory</ulink> | 741 | <ulink url='&YOCTO_DOCS_REF_URL;#build-directory'>Build Directory</ulink> |
742 | under <filename>tmp/deploy/images</filename>. | 742 | under <filename>tmp/deploy/images</filename>. |
743 | For detailed information on the build process using BitBake, see the | 743 | For detailed information on the build process using BitBake, see the |
744 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#images-dev-environment'>Images</ulink>" | 744 | "<ulink url='&YOCTO_DOCS_GS_URL;#images-dev-environment'>Images</ulink>" |
745 | section in the Yocto Project Overview Manual. | 745 | section in the Yocto Project Overview Manual. |
746 | </para> | 746 | </para> |
747 | 747 | ||
diff --git a/documentation/getting-started/eclipse/getting-started-toc.xml b/documentation/getting-started/eclipse/getting-started-toc.xml new file mode 100644 index 0000000000..6f1c29af30 --- /dev/null +++ b/documentation/getting-started/eclipse/getting-started-toc.xml | |||
@@ -0,0 +1,86 @@ | |||
1 | <?xml version="1.0" encoding="utf-8" standalone="no"?> | ||
2 | <toc label="Getting Started With Yocto Project" topic="html/getting-started/index.html"> | ||
3 | <topic label="The Yocto Project Overview Manual" href="html/getting-started/overview-manual-intro.html"> | ||
4 | <topic label="Welcome" href="html/getting-started/overview-welcome.html"/> | ||
5 | <topic label="Other Information" href="html/getting-started/overview-other-information.html"/> | ||
6 | </topic> | ||
7 | <topic label="The Yocto Project Development Environment" href="html/getting-started/overview-development-environment.html"> | ||
8 | <topic label="Introduction" href="html/getting-started/yp-intro.html"/> | ||
9 | <topic label="Open Source Philosophy" href="html/getting-started/open-source-philosophy.html"/> | ||
10 | <topic label="Workflows" href="html/getting-started/workflows.html"/> | ||
11 | <topic label="Git" href="html/getting-started/git.html"> | ||
12 | <topic label="Repositories, Tags, and Branches" href="html/getting-started/repositories-tags-and-branches.html"/> | ||
13 | <topic label="Basic Commands" href="html/getting-started/basic-commands.html"/> | ||
14 | </topic> | ||
15 | <topic label="Yocto Project Source Repositories" href="html/getting-started/yocto-project-repositories.html"/> | ||
16 | <topic label="Licensing" href="html/getting-started/licensing.html"/> | ||
17 | <topic label="Recipe Syntax" href="html/getting-started/recipe-syntax.html"/> | ||
18 | <topic label="Development Concepts" href="html/getting-started/development-concepts.html"> | ||
19 | <topic label="User Configuration" href="html/getting-started/user-configuration.html"/> | ||
20 | <topic label="Metadata, Machine Configuration, and Policy Configuration" href="html/getting-started/metadata-machine-configuration-and-policy-configuration.html"> | ||
21 | <topic label="Distro Layer" href="html/getting-started/distro-layer.html"/> | ||
22 | <topic label="BSP Layer" href="html/getting-started/bsp-layer.html"/> | ||
23 | <topic label="Software Layer" href="html/getting-started/software-layer.html"/> | ||
24 | </topic> | ||
25 | <topic label="Sources" href="html/getting-started/sources-dev-environment.html"> | ||
26 | <topic label="Upstream Project Releases" href="html/getting-started/upstream-project-releases.html"/> | ||
27 | <topic label="Local Projects" href="html/getting-started/local-projects.html"/> | ||
28 | <topic label="Source Control Managers (Optional)" href="html/getting-started/scms.html"/> | ||
29 | <topic label="Source Mirror(s)" href="html/getting-started/source-mirrors.html"/> | ||
30 | </topic> | ||
31 | <topic label="Package Feeds" href="html/getting-started/package-feeds-dev-environment.html"/> | ||
32 | <topic label="BitBake" href="html/getting-started/bitbake-dev-environment.html"> | ||
33 | <topic label="Source Fetching" href="html/getting-started/source-fetching-dev-environment.html"/> | ||
34 | <topic label="Patching" href="html/getting-started/patching-dev-environment.html"/> | ||
35 | <topic label="Configuration and Compilation" href="html/getting-started/configuration-and-compilation-dev-environment.html"/> | ||
36 | <topic label="Package Splitting" href="html/getting-started/package-splitting-dev-environment.html"/> | ||
37 | <topic label="Image Generation" href="html/getting-started/image-generation-dev-environment.html"/> | ||
38 | <topic label="SDK Generation" href="html/getting-started/sdk-generation-dev-environment.html"/> | ||
39 | <topic label="Stamp Files and the Rerunning of Tasks" href="html/getting-started/stamp-files-and-the-rerunning-of-tasks.html"/> | ||
40 | <topic label="Setscene Tasks and Shared State" href="html/getting-started/setscene-tasks-and-shared-state.html"/> | ||
41 | </topic> | ||
42 | <topic label="Images" href="html/getting-started/images-dev-environment.html"/> | ||
43 | <topic label="Application Development SDK" href="html/getting-started/sdk-dev-environment.html"/> | ||
44 | </topic> | ||
45 | </topic> | ||
46 | <topic label="Yocto Project Concepts" href="html/getting-started/overview-concepts.html"> | ||
47 | <topic label="Yocto Project Components" href="html/getting-started/yocto-project-components.html"> | ||
48 | <topic label="BitBake" href="html/getting-started/usingpoky-components-bitbake.html"/> | ||
49 | <topic label="Metadata (Recipes)" href="html/getting-started/usingpoky-components-metadata.html"/> | ||
50 | <topic label="Metadata (Virtual Providers)" href="html/getting-started/metadata-virtual-providers.html"/> | ||
51 | <topic label="Classes" href="html/getting-started/usingpoky-components-classes.html"/> | ||
52 | <topic label="Configuration" href="html/getting-started/usingpoky-components-configuration.html"/> | ||
53 | </topic> | ||
54 | <topic label="Cross-Development Toolchain Generation" href="html/getting-started/cross-development-toolchain-generation.html"/> | ||
55 | <topic label="Shared State Cache" href="html/getting-started/shared-state-cache.html"> | ||
56 | <topic label="Overall Architecture" href="html/getting-started/overall-architecture.html"/> | ||
57 | <topic label="Checksums (Signatures)" href="html/getting-started/overview-checksums.html"/> | ||
58 | <topic label="Shared State" href="html/getting-started/shared-state.html"/> | ||
59 | <topic label="Tips and Tricks" href="html/getting-started/tips-and-tricks.html"> | ||
60 | <topic label="Debugging" href="html/getting-started/overview-debugging.html"/> | ||
61 | <topic label="Invalidating Shared State" href="html/getting-started/invalidating-shared-state.html"/> | ||
62 | </topic> | ||
63 | </topic> | ||
64 | <topic label="Automatically Added Runtime Dependencies" href="html/getting-started/automatically-added-runtime-dependencies.html"/> | ||
65 | <topic label="Fakeroot and Pseudo" href="html/getting-started/fakeroot-and-pseudo.html"/> | ||
66 | <topic label="Wayland" href="html/getting-started/wayland.html"> | ||
67 | <topic label="Support" href="html/getting-started/wayland-support.html"/> | ||
68 | <topic label="Enabling Wayland in an Image" href="html/getting-started/enabling-wayland-in-an-image.html"> | ||
69 | <topic label="Building" href="html/getting-started/enable-building.html"/> | ||
70 | <topic label="Installing" href="html/getting-started/enable-installation-in-an-image.html"/> | ||
71 | </topic> | ||
72 | <topic label="Running Weston" href="html/getting-started/running-weston.html"/> | ||
73 | </topic> | ||
74 | <topic label="Licenses" href="html/getting-started/overview-licenses.html"> | ||
75 | <topic label="Tracking License Changes" href="html/getting-started/usingpoky-configuring-LIC_FILES_CHKSUM.html"> | ||
76 | <topic label="Specifying the LIC_FILES_CHKSUM Variable" href="html/getting-started/usingpoky-specifying-LIC_FILES_CHKSUM.html"/> | ||
77 | <topic label="Explanation of Syntax" href="html/getting-started/usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax.html"/> | ||
78 | </topic> | ||
79 | <topic label="Enabling Commercially Licensed Recipes" href="html/getting-started/enabling-commercially-licensed-recipes.html"> | ||
80 | <topic label="License Flag Matching" href="html/getting-started/license-flag-matching.html"/> | ||
81 | <topic label="Other Variables Related to Commercial Licenses" href="html/getting-started/other-variables-related-to-commercial-licenses.html"/> | ||
82 | </topic> | ||
83 | </topic> | ||
84 | <topic label="x32 psABI" href="html/getting-started/x32.html"/> | ||
85 | </topic> | ||
86 | </toc> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/automatically-added-runtime-dependencies.html b/documentation/getting-started/eclipse/html/getting-started/automatically-added-runtime-dependencies.html new file mode 100644 index 0000000000..885ee089e1 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/automatically-added-runtime-dependencies.html | |||
@@ -0,0 +1,164 @@ | |||
1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.4. Automatically Added Runtime Dependencies</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="invalidating-shared-state.html" title="3.3.4.2. Invalidating Shared State"> | ||
10 | <link rel="next" href="fakeroot-and-pseudo.html" title="3.5. Fakeroot and Pseudo"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.4. Automatically Added Runtime Dependencies"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="automatically-added-runtime-dependencies"></a>3.4. Automatically Added Runtime Dependencies</h2></div></div></div> | ||
15 | <p> | ||
16 | The OpenEmbedded build system automatically adds common types of | ||
17 | runtime dependencies between packages, which means that you do not | ||
18 | need to explicitly declare the packages using | ||
19 | <a class="link" href="../ref-manual/var-RDEPENDS.html" target="_self"><code class="filename">RDEPENDS</code></a>. | ||
20 | Three automatic mechanisms exist (<code class="filename">shlibdeps</code>, | ||
21 | <code class="filename">pcdeps</code>, and <code class="filename">depchains</code>) | ||
22 | that handle shared libraries, package configuration (pkg-config) | ||
23 | modules, and <code class="filename">-dev</code> and | ||
24 | <code class="filename">-dbg</code> packages, respectively. | ||
25 | For other types of runtime dependencies, you must manually declare | ||
26 | the dependencies. | ||
27 | </p> | ||
28 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
29 | <li class="listitem"> | ||
30 | <p> | ||
31 | <code class="filename">shlibdeps</code>: | ||
32 | During the | ||
33 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a> | ||
34 | task of each recipe, all shared libraries installed by the | ||
35 | recipe are located. | ||
36 | For each shared library, the package that contains the | ||
37 | shared library is registered as providing the shared | ||
38 | library. | ||
39 | More specifically, the package is registered as providing | ||
40 | the | ||
41 | <a class="ulink" href="https://en.wikipedia.org/wiki/Soname" target="_self">soname</a> | ||
42 | of the library. | ||
43 | The resulting shared-library-to-package mapping | ||
44 | is saved globally in | ||
45 | <a class="link" href="../ref-manual/var-PKGDATA_DIR.html" target="_self"><code class="filename">PKGDATA_DIR</code></a> | ||
46 | by the | ||
47 | <a class="link" href="../ref-manual/ref-tasks-packagedata.html" target="_self"><code class="filename">do_packagedata</code></a> | ||
48 | task.</p> | ||
49 | <p>Simultaneously, all executables and shared libraries | ||
50 | installed by the recipe are inspected to see what shared | ||
51 | libraries they link against. | ||
52 | For each shared library dependency that is found, | ||
53 | <code class="filename">PKGDATA_DIR</code> is queried to | ||
54 | see if some package (likely from a different recipe) | ||
55 | contains the shared library. | ||
56 | If such a package is found, a runtime dependency is added | ||
57 | from the package that depends on the shared library to the | ||
58 | package that contains the library.</p> | ||
59 | <p>The automatically added runtime dependency also | ||
60 | includes a version restriction. | ||
61 | This version restriction specifies that at least the | ||
62 | current version of the package that provides the shared | ||
63 | library must be used, as if | ||
64 | "<em class="replaceable"><code>package</code></em> (>= <em class="replaceable"><code>version</code></em>)" | ||
65 | had been added to | ||
66 | <a class="link" href="../ref-manual/var-RDEPENDS.html" target="_self"><code class="filename">RDEPENDS</code></a>. | ||
67 | This forces an upgrade of the package containing the shared | ||
68 | library when installing the package that depends on the | ||
69 | library, if needed.</p> | ||
70 | <p>If you want to avoid a package being registered as | ||
71 | providing a particular shared library (e.g. because the library | ||
72 | is for internal use only), then add the library to | ||
73 | <a class="link" href="../ref-manual/var-PRIVATE_LIBS.html" target="_self"><code class="filename">PRIVATE_LIBS</code></a> | ||
74 | inside the package's recipe. | ||
75 | </p> | ||
76 | </li> | ||
77 | <li class="listitem"> | ||
78 | <p> | ||
79 | <code class="filename">pcdeps</code>: | ||
80 | During the | ||
81 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a> | ||
82 | task of each recipe, all pkg-config modules | ||
83 | (<code class="filename">*.pc</code> files) installed by the recipe | ||
84 | are located. | ||
85 | For each module, the package that contains the module is | ||
86 | registered as providing the module. | ||
87 | The resulting module-to-package mapping is saved globally in | ||
88 | <a class="link" href="../ref-manual/var-PKGDATA_DIR.html" target="_self"><code class="filename">PKGDATA_DIR</code></a> | ||
89 | by the | ||
90 | <a class="link" href="../ref-manual/ref-tasks-packagedata.html" target="_self"><code class="filename">do_packagedata</code></a> | ||
91 | task.</p> | ||
92 | <p>Simultaneously, all pkg-config modules installed by | ||
93 | the recipe are inspected to see what other pkg-config | ||
94 | modules they depend on. | ||
95 | A module is seen as depending on another module if it | ||
96 | contains a "Requires:" line that specifies the other module. | ||
97 | For each module dependency, | ||
98 | <code class="filename">PKGDATA_DIR</code> is queried to see if some | ||
99 | package contains the module. | ||
100 | If such a package is found, a runtime dependency is added | ||
101 | from the package that depends on the module to the package | ||
102 | that contains the module. | ||
103 | </p> | ||
104 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
105 | <h3 class="title">Note</h3> | ||
106 | The <code class="filename">pcdeps</code> mechanism most often | ||
107 | infers dependencies between <code class="filename">-dev</code> | ||
108 | packages. | ||
109 | </div> | ||
110 | <p> | ||
111 | </p> | ||
112 | </li> | ||
113 | <li class="listitem"> | ||
114 | <p> | ||
115 | <code class="filename">depchains</code>: | ||
116 | If a package <code class="filename">foo</code> depends on a package | ||
117 | <code class="filename">bar</code>, then <code class="filename">foo-dev</code> | ||
118 | and <code class="filename">foo-dbg</code> are also made to depend on | ||
119 | <code class="filename">bar-dev</code> and | ||
120 | <code class="filename">bar-dbg</code>, respectively. | ||
121 | Taking the <code class="filename">-dev</code> packages as an | ||
122 | example, the <code class="filename">bar-dev</code> package might | ||
123 | provide headers and shared library symlinks needed by | ||
124 | <code class="filename">foo-dev</code>, which shows the need | ||
125 | for a dependency between the packages.</p> | ||
126 | <p>The dependencies added by | ||
127 | <code class="filename">depchains</code> are in the form of | ||
128 | <a class="link" href="../ref-manual/var-RRECOMMENDS.html" target="_self"><code class="filename">RRECOMMENDS</code></a>. | ||
129 | </p> | ||
130 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
131 | <h3 class="title">Note</h3> | ||
132 | By default, <code class="filename">foo-dev</code> also has an | ||
133 | <code class="filename">RDEPENDS</code>-style dependency on | ||
134 | <code class="filename">foo</code>, because the default value of | ||
135 | <code class="filename">RDEPENDS_${PN}-dev</code> (set in | ||
136 | <code class="filename">bitbake.conf</code>) includes | ||
137 | "${PN}". | ||
138 | </div> | ||
139 | <p>To ensure that the dependency chain is never broken, | ||
140 | <code class="filename">-dev</code> and <code class="filename">-dbg</code> | ||
141 | packages are always generated by default, even if the | ||
142 | packages turn out to be empty. | ||
143 | See the | ||
144 | <a class="link" href="../ref-manual/var-ALLOW_EMPTY.html" target="_self"><code class="filename">ALLOW_EMPTY</code></a> | ||
145 | variable for more information. | ||
146 | </p> | ||
147 | </li> | ||
148 | </ul></div> | ||
149 | <p> | ||
150 | </p> | ||
151 | <p> | ||
152 | The <code class="filename">do_package</code> task depends on the | ||
153 | <a class="link" href="../ref-manual/ref-tasks-packagedata.html" target="_self"><code class="filename">do_packagedata</code></a> | ||
154 | task of each recipe in | ||
155 | <a class="link" href="../ref-manual/var-DEPENDS.html" target="_self"><code class="filename">DEPENDS</code></a> | ||
156 | through use of a | ||
157 | <code class="filename">[</code><a class="link" href="../bitbake-user-manual/variable-flags.html" target="_self"><code class="filename">deptask</code></a><code class="filename">]</code> | ||
158 | declaration, which guarantees that the required | ||
159 | shared-library/module-to-package mapping information will be available | ||
160 | when needed as long as <code class="filename">DEPENDS</code> has been | ||
161 | correctly set. | ||
162 | </p> | ||
163 | </div></body> | ||
164 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/basic-commands.html b/documentation/getting-started/eclipse/html/getting-started/basic-commands.html new file mode 100644 index 0000000000..b145086974 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/basic-commands.html | |||
@@ -0,0 +1,176 @@ | |||
1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.4.2. Basic Commands</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="git.html" title="2.4. Git"> | ||
9 | <link rel="prev" href="repositories-tags-and-branches.html" title="2.4.1. Repositories, Tags, and Branches"> | ||
10 | <link rel="next" href="yocto-project-repositories.html" title="2.5. Yocto Project Source Repositories"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.4.2. Basic Commands"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="basic-commands"></a>2.4.2. Basic Commands</h3></div></div></div> | ||
15 | <p> | ||
16 | Git has an extensive set of commands that lets you manage changes | ||
17 | and perform collaboration over the life of a project. | ||
18 | Conveniently though, you can manage with a small set of basic | ||
19 | operations and workflows once you understand the basic | ||
20 | philosophy behind Git. | ||
21 | You do not have to be an expert in Git to be functional. | ||
22 | A good place to look for instruction on a minimal set of Git | ||
23 | commands is | ||
24 | <a class="ulink" href="http://git-scm.com/documentation" target="_self">here</a>. | ||
25 | </p> | ||
26 | <p> | ||
27 | If you do not know much about Git, you should educate | ||
28 | yourself by visiting the links previously mentioned. | ||
29 | </p> | ||
30 | <p> | ||
31 | The following list of Git commands briefly describes some basic | ||
32 | Git operations as a way to get started. | ||
33 | As with any set of commands, this list (in most cases) simply shows | ||
34 | the base command and omits the many arguments they support. | ||
35 | See the Git documentation for complete descriptions and strategies | ||
36 | on how to use these commands: | ||
37 | </p> | ||
38 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
39 | <li class="listitem"><p> | ||
40 | <span class="emphasis"><em><code class="filename">git init</code>:</em></span> | ||
41 | Initializes an empty Git repository. | ||
42 | You cannot use Git commands unless you have a | ||
43 | <code class="filename">.git</code> repository. | ||
44 | </p></li> | ||
45 | <li class="listitem"><p><a name="git-commands-clone"></a> | ||
46 | <span class="emphasis"><em><code class="filename">git clone</code>:</em></span> | ||
47 | Creates a local clone of a Git repository that is on | ||
48 | equal footing with a fellow developer’s Git repository | ||
49 | or an upstream repository. | ||
50 | </p></li> | ||
51 | <li class="listitem"><p> | ||
52 | <span class="emphasis"><em><code class="filename">git add</code>:</em></span> | ||
53 | Locally stages updated file contents to the index that | ||
54 | Git uses to track changes. | ||
55 | You must stage all files that have changed before you | ||
56 | can commit them. | ||
57 | </p></li> | ||
58 | <li class="listitem"><p> | ||
59 | <span class="emphasis"><em><code class="filename">git commit</code>:</em></span> | ||
60 | Creates a local "commit" that documents the changes you | ||
61 | made. | ||
62 | Only changes that have been staged can be committed. | ||
63 | Commits are used for historical purposes, for determining | ||
64 | if a maintainer of a project will allow the change, | ||
65 | and for ultimately pushing the change from your local | ||
66 | Git repository into the project’s upstream repository. | ||
67 | </p></li> | ||
68 | <li class="listitem"><p> | ||
69 | <span class="emphasis"><em><code class="filename">git status</code>:</em></span> | ||
70 | Reports any modified files that possibly need to be | ||
71 | staged and gives you a status of where you stand regarding | ||
72 | local commits as compared to the upstream repository. | ||
73 | </p></li> | ||
74 | <li class="listitem"><p> | ||
75 | <span class="emphasis"><em><code class="filename">git checkout</code> <em class="replaceable"><code>branch-name</code></em>:</em></span> | ||
76 | Changes your working branch. | ||
77 | This command is analogous to "cd". | ||
78 | </p></li> | ||
79 | <li class="listitem"><p><span class="emphasis"><em><code class="filename">git checkout –b</code> <em class="replaceable"><code>working-branch</code></em>:</em></span> | ||
80 | Creates and checks out a working branch on your local | ||
81 | machine that you can use to isolate your work. | ||
82 | It is a good idea to use local branches when adding | ||
83 | specific features or changes. | ||
84 | Using isolated branches facilitates easy removal of | ||
85 | changes if they do not work out. | ||
86 | </p></li> | ||
87 | <li class="listitem"><p><span class="emphasis"><em><code class="filename">git branch</code>:</em></span> | ||
88 | Displays the existing local branches associated with your | ||
89 | local repository. | ||
90 | The branch that you have currently checked out is noted | ||
91 | with an asterisk character. | ||
92 | </p></li> | ||
93 | <li class="listitem"><p> | ||
94 | <span class="emphasis"><em><code class="filename">git branch -D</code> <em class="replaceable"><code>branch-name</code></em>:</em></span> | ||
95 | Deletes an existing local branch. | ||
96 | You need to be in a local branch other than the one you | ||
97 | are deleting in order to delete | ||
98 | <em class="replaceable"><code>branch-name</code></em>. | ||
99 | </p></li> | ||
100 | <li class="listitem"><p> | ||
101 | <span class="emphasis"><em><code class="filename">git pull</code>:</em></span> | ||
102 | Retrieves information from an upstream Git repository | ||
103 | and places it in your local Git repository. | ||
104 | You use this command to make sure you are synchronized with | ||
105 | the repository from which you are basing changes | ||
106 | (.e.g. the "master" branch). | ||
107 | </p></li> | ||
108 | <li class="listitem"><p> | ||
109 | <span class="emphasis"><em><code class="filename">git push</code>:</em></span> | ||
110 | Sends all your committed local changes to the upstream Git | ||
111 | repository that your local repository is tracking | ||
112 | (e.g. a contribution repository). | ||
113 | The maintainer of the project draws from these repositories | ||
114 | to merge changes (commits) into the appropriate branch | ||
115 | of project's upstream repository. | ||
116 | </p></li> | ||
117 | <li class="listitem"><p> | ||
118 | <span class="emphasis"><em><code class="filename">git merge</code>:</em></span> | ||
119 | Combines or adds changes from one | ||
120 | local branch of your repository with another branch. | ||
121 | When you create a local Git repository, the default branch | ||
122 | is named "master". | ||
123 | A typical workflow is to create a temporary branch that is | ||
124 | based off "master" that you would use for isolated work. | ||
125 | You would make your changes in that isolated branch, | ||
126 | stage and commit them locally, switch to the "master" | ||
127 | branch, and then use the <code class="filename">git merge</code> | ||
128 | command to apply the changes from your isolated branch | ||
129 | into the currently checked out branch (e.g. "master"). | ||
130 | After the merge is complete and if you are done with | ||
131 | working in that isolated branch, you can safely delete | ||
132 | the isolated branch. | ||
133 | </p></li> | ||
134 | <li class="listitem"><p> | ||
135 | <span class="emphasis"><em><code class="filename">git cherry-pick</code>:</em></span> | ||
136 | Choose and apply specific commits from one branch | ||
137 | into another branch. | ||
138 | There are times when you might not be able to merge | ||
139 | all the changes in one branch with | ||
140 | another but need to pick out certain ones. | ||
141 | </p></li> | ||
142 | <li class="listitem"> | ||
143 | <p> | ||
144 | <span class="emphasis"><em><code class="filename">gitk</code>:</em></span> | ||
145 | Provides a GUI view of the branches and changes in your | ||
146 | local Git repository. | ||
147 | This command is a good way to graphically see where things | ||
148 | have diverged in your local repository. | ||
149 | </p> | ||
150 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
151 | <h3 class="title">Note</h3> | ||
152 | You need to install the <code class="filename">gitk</code> | ||
153 | package on your development system to use this | ||
154 | command. | ||
155 | </div> | ||
156 | <p> | ||
157 | </p> | ||
158 | </li> | ||
159 | <li class="listitem"><p> | ||
160 | <span class="emphasis"><em><code class="filename">git log</code>:</em></span> | ||
161 | Reports a history of your commits to the repository. | ||
162 | This report lists all commits regardless of whether you | ||
163 | have pushed them upstream or not. | ||
164 | </p></li> | ||
165 | <li class="listitem"><p> | ||
166 | <span class="emphasis"><em><code class="filename">git diff</code>:</em></span> | ||
167 | Displays line-by-line differences between a local | ||
168 | working file and the same file as understood by Git. | ||
169 | This command is useful to see what you have changed | ||
170 | in any given file. | ||
171 | </p></li> | ||
172 | </ul></div> | ||
173 | <p> | ||
174 | </p> | ||
175 | </div></body> | ||
176 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/bitbake-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/bitbake-dev-environment.html new file mode 100644 index 0000000000..eda2c3370f --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/bitbake-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5. BitBake</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="package-feeds-dev-environment.html" title="2.8.4. Package Feeds"> | ||
10 | <link rel="next" href="source-fetching-dev-environment.html" title="2.8.5.1. Source Fetching"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5. BitBake"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="bitbake-dev-environment"></a>2.8.5. BitBake</h3></div></div></div> | ||
15 | <p> | ||
16 | The OpenEmbedded build system uses | ||
17 | <a class="link" href="../ref-manual/bitbake-term.html" target="_self">BitBake</a> | ||
18 | to produce images. | ||
19 | You can see from the | ||
20 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>, | ||
21 | the BitBake area consists of several functional areas. | ||
22 | This section takes a closer look at each of those areas. | ||
23 | </p> | ||
24 | <p> | ||
25 | Separate documentation exists for the BitBake tool. | ||
26 | See the | ||
27 | <a class="link" href="../bitbake-user-manual/bitbake-user-manual.html" target="_self">BitBake User Manual</a> | ||
28 | for reference material on BitBake. | ||
29 | </p> | ||
30 | </div></body> | ||
31 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/bsp-layer.html b/documentation/getting-started/eclipse/html/getting-started/bsp-layer.html new file mode 100644 index 0000000000..2d009d5720 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/bsp-layer.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.2.2. BSP Layer</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
9 | <link rel="prev" href="distro-layer.html" title="2.8.2.1. Distro Layer"> | ||
10 | <link rel="next" href="software-layer.html" title="2.8.2.3. Software Layer"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.2.2. BSP Layer"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="bsp-layer"></a>2.8.2.2. BSP Layer</h4></div></div></div> | ||
15 | <p> | ||
16 | The BSP Layer provides machine configurations. | ||
17 | Everything in this layer is specific to the machine for which | ||
18 | you are building the image or the SDK. | ||
19 | A common structure or form is defined for BSP layers. | ||
20 | You can learn more about this structure in the | ||
21 | <a class="link" href="../bsp-guide/index.html" target="_self">Yocto Project Board Support Package (BSP) Developer's Guide</a>. | ||
22 | </p> | ||
23 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
24 | <h3 class="title">Note</h3> | ||
25 | In order for a BSP layer to be considered compliant with the | ||
26 | Yocto Project, it must meet some structural requirements. | ||
27 | </div> | ||
28 | <p> | ||
29 | </p> | ||
30 | <p> | ||
31 | The BSP Layer's configuration directory contains | ||
32 | configuration files for the machine | ||
33 | (<code class="filename">conf/machine/<em class="replaceable"><code>machine</code></em>.conf</code>) and, | ||
34 | of course, the layer (<code class="filename">conf/layer.conf</code>). | ||
35 | </p> | ||
36 | <p> | ||
37 | The remainder of the layer is dedicated to specific recipes | ||
38 | by function: <code class="filename">recipes-bsp</code>, | ||
39 | <code class="filename">recipes-core</code>, | ||
40 | <code class="filename">recipes-graphics</code>, and | ||
41 | <code class="filename">recipes-kernel</code>. | ||
42 | Metadata can exist for multiple formfactors, graphics | ||
43 | support systems, and so forth. | ||
44 | </p> | ||
45 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
46 | <h3 class="title">Note</h3> | ||
47 | While the figure shows several <code class="filename">recipes-*</code> | ||
48 | directories, not all these directories appear in all | ||
49 | BSP layers. | ||
50 | </div> | ||
51 | <p> | ||
52 | </p> | ||
53 | </div></body> | ||
54 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/configuration-and-compilation-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/configuration-and-compilation-dev-environment.html new file mode 100644 index 0000000000..9a94cc47da --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/configuration-and-compilation-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.3. Configuration and Compilation</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="patching-dev-environment.html" title="2.8.5.2. Patching"> | ||
10 | <link rel="next" href="package-splitting-dev-environment.html" title="2.8.5.4. Package Splitting"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.3. Configuration and Compilation"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="configuration-and-compilation-dev-environment"></a>2.8.5.3. Configuration and Compilation</h4></div></div></div> | ||
15 | <p> | ||
16 | After source code is patched, BitBake executes tasks that | ||
17 | configure and compile the source code: | ||
18 | </p> | ||
19 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 450px"><td align="center"><img src="figures/configuration-compile-autoreconf.png" align="middle" width="630"></td></tr></table> | ||
20 | <p> | ||
21 | </p> | ||
22 | <p> | ||
23 | This step in the build process consists of three tasks: | ||
24 | </p> | ||
25 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
26 | <li class="listitem"><p> | ||
27 | <span class="emphasis"><em><a class="link" href="../ref-manual/ref-tasks-prepare_recipe_sysroot.html" target="_self"><code class="filename">do_prepare_recipe_sysroot</code></a>:</em></span> | ||
28 | This task sets up the two sysroots in | ||
29 | <code class="filename">${</code><a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a><code class="filename">}</code> | ||
30 | (i.e. <code class="filename">recipe-sysroot</code> and | ||
31 | <code class="filename">recipe-sysroot-native</code>) so that | ||
32 | the sysroots contain the contents of the | ||
33 | <a class="link" href="../ref-manual/ref-tasks-populate_sysroot.html" target="_self"><code class="filename">do_populate_sysroot</code></a> | ||
34 | tasks of the recipes on which the recipe | ||
35 | containing the tasks depends. | ||
36 | A sysroot exists for both the target and for the native | ||
37 | binaries, which run on the host system. | ||
38 | </p></li> | ||
39 | <li class="listitem"> | ||
40 | <p><span class="emphasis"><em><code class="filename">do_configure</code>:</em></span> | ||
41 | This task configures the source by enabling and | ||
42 | disabling any build-time and configuration options for | ||
43 | the software being built. | ||
44 | Configurations can come from the recipe itself as well | ||
45 | as from an inherited class. | ||
46 | Additionally, the software itself might configure itself | ||
47 | depending on the target for which it is being built. | ||
48 | </p> | ||
49 | <p>The configurations handled by the | ||
50 | <a class="link" href="../ref-manual/ref-tasks-configure.html" target="_self"><code class="filename">do_configure</code></a> | ||
51 | task are specific | ||
52 | to source code configuration for the source code | ||
53 | being built by the recipe.</p> | ||
54 | <p>If you are using the | ||
55 | <a class="link" href="../ref-manual/ref-classes-autotools.html" target="_self"><code class="filename">autotools</code></a> | ||
56 | class, | ||
57 | you can add additional configuration options by using | ||
58 | the | ||
59 | <a class="link" href="../ref-manual/var-EXTRA_OECONF.html" target="_self"><code class="filename">EXTRA_OECONF</code></a> | ||
60 | or | ||
61 | <a class="link" href="../ref-manual/var-PACKAGECONFIG_CONFARGS.html" target="_self"><code class="filename">PACKAGECONFIG_CONFARGS</code></a> | ||
62 | variables. | ||
63 | For information on how this variable works within | ||
64 | that class, see the | ||
65 | <code class="filename">meta/classes/autotools.bbclass</code> file. | ||
66 | </p> | ||
67 | </li> | ||
68 | <li class="listitem"><p><span class="emphasis"><em><code class="filename">do_compile</code>:</em></span> | ||
69 | Once a configuration task has been satisfied, BitBake | ||
70 | compiles the source using the | ||
71 | <a class="link" href="../ref-manual/ref-tasks-compile.html" target="_self"><code class="filename">do_compile</code></a> | ||
72 | task. | ||
73 | Compilation occurs in the directory pointed to by the | ||
74 | <a class="link" href="../ref-manual/var-B.html" target="_self"><code class="filename">B</code></a> | ||
75 | variable. | ||
76 | Realize that the <code class="filename">B</code> directory is, by | ||
77 | default, the same as the | ||
78 | <a class="link" href="../ref-manual/var-S.html" target="_self"><code class="filename">S</code></a> | ||
79 | directory.</p></li> | ||
80 | <li class="listitem"><p><span class="emphasis"><em><code class="filename">do_install</code>:</em></span> | ||
81 | Once compilation is done, BitBake executes the | ||
82 | <a class="link" href="../ref-manual/ref-tasks-install.html" target="_self"><code class="filename">do_install</code></a> | ||
83 | task. | ||
84 | This task copies files from the <code class="filename">B</code> | ||
85 | directory and places them in a holding area pointed to | ||
86 | by the | ||
87 | <a class="link" href="../ref-manual/var-D.html" target="_self"><code class="filename">D</code></a> | ||
88 | variable.</p></li> | ||
89 | </ul></div> | ||
90 | <p> | ||
91 | </p> | ||
92 | </div></body> | ||
93 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/cross-development-toolchain-generation.html b/documentation/getting-started/eclipse/html/getting-started/cross-development-toolchain-generation.html new file mode 100644 index 0000000000..a1aef9119d --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/cross-development-toolchain-generation.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.2. Cross-Development Toolchain Generation</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="usingpoky-components-configuration.html" title="3.1.5. Configuration"> | ||
10 | <link rel="next" href="shared-state-cache.html" title="3.3. Shared State Cache"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.2. Cross-Development Toolchain Generation"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="cross-development-toolchain-generation"></a>3.2. Cross-Development Toolchain Generation</h2></div></div></div> | ||
15 | <p> | ||
16 | The Yocto Project does most of the work for you when it comes to | ||
17 | creating | ||
18 | <a class="link" href="../ref-manual/cross-development-toolchain.html" target="_self">cross-development toolchains</a>. | ||
19 | This section provides some technical background on how | ||
20 | cross-development toolchains are created and used. | ||
21 | For more information on toolchains, you can also see the | ||
22 | <a class="link" href="../sdk-manual/index.html" target="_self">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)</a> | ||
23 | manual. | ||
24 | </p> | ||
25 | <p> | ||
26 | In the Yocto Project development environment, cross-development | ||
27 | toolchains are used to build the image and applications that run | ||
28 | on the target hardware. | ||
29 | With just a few commands, the OpenEmbedded build system creates | ||
30 | these necessary toolchains for you. | ||
31 | </p> | ||
32 | <p> | ||
33 | The following figure shows a high-level build environment regarding | ||
34 | toolchain construction and use. | ||
35 | </p> | ||
36 | <p> | ||
37 | </p> | ||
38 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 540px"><td align="center"><img src="figures/cross-development-toolchains.png" align="middle" width="720"></td></tr></table> | ||
39 | <p> | ||
40 | </p> | ||
41 | <p> | ||
42 | Most of the work occurs on the Build Host. | ||
43 | This is the machine used to build images and generally work within the | ||
44 | the Yocto Project environment. | ||
45 | When you run BitBake to create an image, the OpenEmbedded build system | ||
46 | uses the host <code class="filename">gcc</code> compiler to bootstrap a | ||
47 | cross-compiler named <code class="filename">gcc-cross</code>. | ||
48 | The <code class="filename">gcc-cross</code> compiler is what BitBake uses to | ||
49 | compile source files when creating the target image. | ||
50 | You can think of <code class="filename">gcc-cross</code> simply as an | ||
51 | automatically generated cross-compiler that is used internally within | ||
52 | BitBake only. | ||
53 | </p> | ||
54 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
55 | <h3 class="title">Note</h3> | ||
56 | The extensible SDK does not use | ||
57 | <code class="filename">gcc-cross-canadian</code> since this SDK | ||
58 | ships a copy of the OpenEmbedded build system and the sysroot | ||
59 | within it contains <code class="filename">gcc-cross</code>. | ||
60 | </div> | ||
61 | <p> | ||
62 | </p> | ||
63 | <p> | ||
64 | The chain of events that occurs when <code class="filename">gcc-cross</code> is | ||
65 | bootstrapped is as follows: | ||
66 | </p> | ||
67 | <pre class="literallayout"> | ||
68 | gcc -> binutils-cross -> gcc-cross-initial -> linux-libc-headers -> glibc-initial -> glibc -> gcc-cross -> gcc-runtime | ||
69 | </pre> | ||
70 | <p> | ||
71 | </p> | ||
72 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
73 | <li class="listitem"><p> | ||
74 | <code class="filename">gcc</code>: | ||
75 | The build host's GNU Compiler Collection (GCC). | ||
76 | </p></li> | ||
77 | <li class="listitem"><p> | ||
78 | <code class="filename">binutils-cross</code>: | ||
79 | The bare minimum binary utilities needed in order to run | ||
80 | the <code class="filename">gcc-cross-initial</code> phase of the | ||
81 | bootstrap operation. | ||
82 | </p></li> | ||
83 | <li class="listitem"><p> | ||
84 | <code class="filename">gcc-cross-initial</code>: | ||
85 | An early stage of the bootstrap process for creating | ||
86 | the cross-compiler. | ||
87 | This stage builds enough of the <code class="filename">gcc-cross</code>, | ||
88 | the C library, and other pieces needed to finish building the | ||
89 | final cross-compiler in later stages. | ||
90 | This tool is a "native" package (i.e. it is designed to run on | ||
91 | the build host). | ||
92 | </p></li> | ||
93 | <li class="listitem"><p> | ||
94 | <code class="filename">linux-libc-headers</code>: | ||
95 | Headers needed for the cross-compiler. | ||
96 | </p></li> | ||
97 | <li class="listitem"><p> | ||
98 | <code class="filename">glibc-initial</code>: | ||
99 | An initial version of the Embedded GLIBC needed to bootstrap | ||
100 | <code class="filename">glibc</code>. | ||
101 | </p></li> | ||
102 | <li class="listitem"> | ||
103 | <p> | ||
104 | <code class="filename">gcc-cross</code>: | ||
105 | The final stage of the bootstrap process for the | ||
106 | cross-compiler. | ||
107 | This stage results in the actual cross-compiler that | ||
108 | BitBake uses when it builds an image for a targeted | ||
109 | device. | ||
110 | </p> | ||
111 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
112 | <h3 class="title">Note</h3> | ||
113 | If you are replacing this cross compiler toolchain | ||
114 | with a custom version, you must replace | ||
115 | <code class="filename">gcc-cross</code>. | ||
116 | </div> | ||
117 | <p> | ||
118 | This tool is also a "native" package (i.e. it is | ||
119 | designed to run on the build host). | ||
120 | </p> | ||
121 | </li> | ||
122 | <li class="listitem"><p> | ||
123 | <code class="filename">gcc-runtime</code>: | ||
124 | Runtime libraries resulting from the toolchain bootstrapping | ||
125 | process. | ||
126 | This tool produces a binary that consists of the | ||
127 | runtime libraries need for the targeted device. | ||
128 | </p></li> | ||
129 | </ul></div> | ||
130 | <p> | ||
131 | </p> | ||
132 | <p> | ||
133 | You can use the OpenEmbedded build system to build an installer for | ||
134 | the relocatable SDK used to develop applications. | ||
135 | When you run the installer, it installs the toolchain, which contains | ||
136 | the development tools (e.g., the | ||
137 | <code class="filename">gcc-cross-canadian</code>), | ||
138 | <code class="filename">binutils-cross-canadian</code>, and other | ||
139 | <code class="filename">nativesdk-*</code> tools, | ||
140 | which are tools native to the SDK (i.e. native to | ||
141 | <a class="link" href="../ref-manual/var-SDK_ARCH.html" target="_self"><code class="filename">SDK_ARCH</code></a>), | ||
142 | you need to cross-compile and test your software. | ||
143 | The figure shows the commands you use to easily build out this | ||
144 | toolchain. | ||
145 | This cross-development toolchain is built to execute on the | ||
146 | <a class="link" href="../ref-manual/var-SDKMACHINE.html" target="_self"><code class="filename">SDKMACHINE</code></a>, | ||
147 | which might or might not be the same | ||
148 | machine as the Build Host. | ||
149 | </p> | ||
150 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
151 | <h3 class="title">Note</h3> | ||
152 | If your target architecture is supported by the Yocto Project, | ||
153 | you can take advantage of pre-built images that ship with the | ||
154 | Yocto Project and already contain cross-development toolchain | ||
155 | installers. | ||
156 | </div> | ||
157 | <p> | ||
158 | </p> | ||
159 | <p> | ||
160 | Here is the bootstrap process for the relocatable toolchain: | ||
161 | </p> | ||
162 | <pre class="literallayout"> | ||
163 | gcc -> binutils-crosssdk -> gcc-crosssdk-initial -> linux-libc-headers -> | ||
164 | glibc-initial -> nativesdk-glibc -> gcc-crosssdk -> gcc-cross-canadian | ||
165 | </pre> | ||
166 | <p> | ||
167 | </p> | ||
168 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
169 | <li class="listitem"><p> | ||
170 | <code class="filename">gcc</code>: | ||
171 | The build host's GNU Compiler Collection (GCC). | ||
172 | </p></li> | ||
173 | <li class="listitem"><p> | ||
174 | <code class="filename">binutils-crosssdk</code>: | ||
175 | The bare minimum binary utilities needed in order to run | ||
176 | the <code class="filename">gcc-crosssdk-initial</code> phase of the | ||
177 | bootstrap operation. | ||
178 | </p></li> | ||
179 | <li class="listitem"><p> | ||
180 | <code class="filename">gcc-crosssdk-initial</code>: | ||
181 | An early stage of the bootstrap process for creating | ||
182 | the cross-compiler. | ||
183 | This stage builds enough of the | ||
184 | <code class="filename">gcc-crosssdk</code> and supporting pieces so that | ||
185 | the final stage of the bootstrap process can produce the | ||
186 | finished cross-compiler. | ||
187 | This tool is a "native" binary that runs on the build host. | ||
188 | </p></li> | ||
189 | <li class="listitem"><p> | ||
190 | <code class="filename">linux-libc-headers</code>: | ||
191 | Headers needed for the cross-compiler. | ||
192 | </p></li> | ||
193 | <li class="listitem"><p> | ||
194 | <code class="filename">glibc-initial</code>: | ||
195 | An initial version of the Embedded GLIBC needed to bootstrap | ||
196 | <code class="filename">nativesdk-glibc</code>. | ||
197 | </p></li> | ||
198 | <li class="listitem"><p> | ||
199 | <code class="filename">nativesdk-glibc</code>: | ||
200 | The Embedded GLIBC needed to bootstrap the | ||
201 | <code class="filename">gcc-crosssdk</code>. | ||
202 | </p></li> | ||
203 | <li class="listitem"><p> | ||
204 | <code class="filename">gcc-crosssdk</code>: | ||
205 | The final stage of the bootstrap process for the | ||
206 | relocatable cross-compiler. | ||
207 | The <code class="filename">gcc-crosssdk</code> is a transitory compiler | ||
208 | and never leaves the build host. | ||
209 | Its purpose is to help in the bootstrap process to create the | ||
210 | eventual relocatable <code class="filename">gcc-cross-canadian</code> | ||
211 | compiler, which is relocatable. | ||
212 | This tool is also a "native" package (i.e. it is | ||
213 | designed to run on the build host). | ||
214 | </p></li> | ||
215 | <li class="listitem"><p> | ||
216 | <code class="filename">gcc-cross-canadian</code>: | ||
217 | The final relocatable cross-compiler. | ||
218 | When run on the | ||
219 | <a class="link" href="../ref-manual/var-SDKMACHINE.html" target="_self"><code class="filename">SDKMACHINE</code></a>, | ||
220 | this tool | ||
221 | produces executable code that runs on the target device. | ||
222 | Only one cross-canadian compiler is produced per architecture | ||
223 | since they can be targeted at different processor optimizations | ||
224 | using configurations passed to the compiler through the | ||
225 | compile commands. | ||
226 | This circumvents the need for multiple compilers and thus | ||
227 | reduces the size of the toolchains. | ||
228 | </p></li> | ||
229 | </ul></div> | ||
230 | <p> | ||
231 | </p> | ||
232 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
233 | <h3 class="title">Note</h3> | ||
234 | For information on advantages gained when building a | ||
235 | cross-development toolchain installer, see the | ||
236 | "<a class="link" href="../sdk-manual/sdk-building-an-sdk-installer.html" target="_self">Building an SDK Installer</a>" | ||
237 | section in the Yocto Project Application Development and the | ||
238 | Extensible Software Development Kit (eSDK) manual. | ||
239 | </div> | ||
240 | </div></body> | ||
241 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/development-concepts.html b/documentation/getting-started/eclipse/html/getting-started/development-concepts.html new file mode 100644 index 0000000000..ccfb73189a --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/development-concepts.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8. Development Concepts</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="recipe-syntax.html" title="2.7. Recipe Syntax"> | ||
10 | <link rel="next" href="user-configuration.html" title="2.8.1. User Configuration"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8. Development Concepts"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="development-concepts"></a>2.8. Development Concepts</h2></div></div></div> | ||
15 | <p> | ||
16 | This section takes a more detailed look inside the development | ||
17 | process. | ||
18 | The following diagram represents development at a high level. | ||
19 | The remainder of this chapter expands on the fundamental input, output, | ||
20 | process, and | ||
21 | <a class="link" href="../ref-manual/metadata.html" target="_self">Metadata</a>) blocks | ||
22 | that make up development in the Yocto Project environment. | ||
23 | </p> | ||
24 | <p><a name="general-yocto-environment-figure"></a> | ||
25 | </p> | ||
26 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 383px"><td align="center"><img src="figures/yocto-environment-ref.png" align="middle" height="383"></td></tr></table> | ||
27 | <p> | ||
28 | </p> | ||
29 | <p> | ||
30 | In general, development consists of several functional areas: | ||
31 | </p> | ||
32 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
33 | <li class="listitem"><p><span class="emphasis"><em>User Configuration:</em></span> | ||
34 | Metadata you can use to control the build process. | ||
35 | </p></li> | ||
36 | <li class="listitem"><p><span class="emphasis"><em>Metadata Layers:</em></span> | ||
37 | Various layers that provide software, machine, and | ||
38 | distro Metadata.</p></li> | ||
39 | <li class="listitem"><p><span class="emphasis"><em>Source Files:</em></span> | ||
40 | Upstream releases, local projects, and SCMs.</p></li> | ||
41 | <li class="listitem"><p><span class="emphasis"><em>Build System:</em></span> | ||
42 | Processes under the control of | ||
43 | <a class="link" href="../ref-manual/bitbake-term.html" target="_self">BitBake</a>. | ||
44 | This block expands on how BitBake fetches source, applies | ||
45 | patches, completes compilation, analyzes output for package | ||
46 | generation, creates and tests packages, generates images, and | ||
47 | generates cross-development tools.</p></li> | ||
48 | <li class="listitem"><p><span class="emphasis"><em>Package Feeds:</em></span> | ||
49 | Directories containing output packages (RPM, DEB or IPK), | ||
50 | which are subsequently used in the construction of an image or | ||
51 | SDK, produced by the build system. | ||
52 | These feeds can also be copied and shared using a web server or | ||
53 | other means to facilitate extending or updating existing | ||
54 | images on devices at runtime if runtime package management is | ||
55 | enabled.</p></li> | ||
56 | <li class="listitem"><p><span class="emphasis"><em>Images:</em></span> | ||
57 | Images produced by the development process. | ||
58 | </p></li> | ||
59 | <li class="listitem"><p><span class="emphasis"><em>Application Development SDK:</em></span> | ||
60 | Cross-development tools that are produced along with an image | ||
61 | or separately with BitBake.</p></li> | ||
62 | </ul></div> | ||
63 | <p> | ||
64 | </p> | ||
65 | </div></body> | ||
66 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/distro-layer.html b/documentation/getting-started/eclipse/html/getting-started/distro-layer.html new file mode 100644 index 0000000000..da6da55986 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/distro-layer.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.2.1. Distro Layer</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
9 | <link rel="prev" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
10 | <link rel="next" href="bsp-layer.html" title="2.8.2.2. BSP Layer"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.2.1. Distro Layer"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="distro-layer"></a>2.8.2.1. Distro Layer</h4></div></div></div> | ||
15 | <p> | ||
16 | The distribution layer provides policy configurations for your | ||
17 | distribution. | ||
18 | Best practices dictate that you isolate these types of | ||
19 | configurations into their own layer. | ||
20 | Settings you provide in | ||
21 | <code class="filename">conf/distro/<em class="replaceable"><code>distro</code></em>.conf</code> override | ||
22 | similar | ||
23 | settings that BitBake finds in your | ||
24 | <code class="filename">conf/local.conf</code> file in the Build | ||
25 | Directory. | ||
26 | </p> | ||
27 | <p> | ||
28 | The following list provides some explanation and references | ||
29 | for what you typically find in the distribution layer: | ||
30 | </p> | ||
31 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
32 | <li class="listitem"><p><span class="emphasis"><em>classes:</em></span> | ||
33 | Class files (<code class="filename">.bbclass</code>) hold | ||
34 | common functionality that can be shared among | ||
35 | recipes in the distribution. | ||
36 | When your recipes inherit a class, they take on the | ||
37 | settings and functions for that class. | ||
38 | You can read more about class files in the | ||
39 | "<a class="link" href="../ref-manual/ref-classes.html" target="_self">Classes</a>" | ||
40 | section of the Yocto Reference Manual. | ||
41 | </p></li> | ||
42 | <li class="listitem"><p><span class="emphasis"><em>conf:</em></span> | ||
43 | This area holds configuration files for the | ||
44 | layer (<code class="filename">conf/layer.conf</code>), | ||
45 | the distribution | ||
46 | (<code class="filename">conf/distro/<em class="replaceable"><code>distro</code></em>.conf</code>), | ||
47 | and any distribution-wide include files. | ||
48 | </p></li> | ||
49 | <li class="listitem"><p><span class="emphasis"><em>recipes-*:</em></span> | ||
50 | Recipes and append files that affect common | ||
51 | functionality across the distribution. | ||
52 | This area could include recipes and append files | ||
53 | to add distribution-specific configuration, | ||
54 | initialization scripts, custom image recipes, | ||
55 | and so forth.</p></li> | ||
56 | </ul></div> | ||
57 | <p> | ||
58 | </p> | ||
59 | </div></body> | ||
60 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/enable-building.html b/documentation/getting-started/eclipse/html/getting-started/enable-building.html new file mode 100644 index 0000000000..af70491f97 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/enable-building.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.6.2.1. Building</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="enabling-wayland-in-an-image.html" title="3.6.2. Enabling Wayland in an Image"> | ||
9 | <link rel="prev" href="enabling-wayland-in-an-image.html" title="3.6.2. Enabling Wayland in an Image"> | ||
10 | <link rel="next" href="enable-installation-in-an-image.html" title="3.6.2.2. Installing"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.6.2.1. Building"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="enable-building"></a>3.6.2.1. Building</h4></div></div></div> | ||
15 | <p> | ||
16 | To cause Mesa to build the <code class="filename">wayland-egl</code> | ||
17 | platform and Weston to build Wayland with Kernel Mode | ||
18 | Setting | ||
19 | (<a class="ulink" href="https://wiki.archlinux.org/index.php/Kernel_Mode_Setting" target="_self">KMS</a>) | ||
20 | support, include the "wayland" flag in the | ||
21 | <a class="link" href="../ref-manual/var-DISTRO_FEATURES.html" target="_self"><code class="filename">DISTRO_FEATURES</code></a> | ||
22 | statement in your <code class="filename">local.conf</code> file: | ||
23 | </p> | ||
24 | <pre class="literallayout"> | ||
25 | DISTRO_FEATURES_append = " wayland" | ||
26 | </pre> | ||
27 | <p> | ||
28 | </p> | ||
29 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
30 | <h3 class="title">Note</h3> | ||
31 | If X11 has been enabled elsewhere, Weston will build | ||
32 | Wayland with X11 support | ||
33 | </div> | ||
34 | <p> | ||
35 | </p> | ||
36 | </div></body> | ||
37 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/enable-installation-in-an-image.html b/documentation/getting-started/eclipse/html/getting-started/enable-installation-in-an-image.html new file mode 100644 index 0000000000..490f1d1036 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/enable-installation-in-an-image.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.6.2.2. Installing</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="enabling-wayland-in-an-image.html" title="3.6.2. Enabling Wayland in an Image"> | ||
9 | <link rel="prev" href="enable-building.html" title="3.6.2.1. Building"> | ||
10 | <link rel="next" href="running-weston.html" title="3.6.3. Running Weston"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.6.2.2. Installing"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="enable-installation-in-an-image"></a>3.6.2.2. Installing</h4></div></div></div> | ||
15 | <p> | ||
16 | To install the Wayland feature into an image, you must | ||
17 | include the following | ||
18 | <a class="link" href="../ref-manual/var-CORE_IMAGE_EXTRA_INSTALL.html" target="_self"><code class="filename">CORE_IMAGE_EXTRA_INSTALL</code></a> | ||
19 | statement in your <code class="filename">local.conf</code> file: | ||
20 | </p> | ||
21 | <pre class="literallayout"> | ||
22 | CORE_IMAGE_EXTRA_INSTALL += "wayland weston" | ||
23 | </pre> | ||
24 | <p> | ||
25 | </p> | ||
26 | </div></body> | ||
27 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/enabling-commercially-licensed-recipes.html b/documentation/getting-started/eclipse/html/getting-started/enabling-commercially-licensed-recipes.html new file mode 100644 index 0000000000..1a31d0e6b1 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/enabling-commercially-licensed-recipes.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7.2. Enabling Commercially Licensed Recipes</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-licenses.html" title="3.7. Licenses"> | ||
9 | <link rel="prev" href="usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax.html" title="3.7.1.2. Explanation of Syntax"> | ||
10 | <link rel="next" href="license-flag-matching.html" title="3.7.2.1. License Flag Matching"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7.2. Enabling Commercially Licensed Recipes"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="enabling-commercially-licensed-recipes"></a>3.7.2. Enabling Commercially Licensed Recipes</h3></div></div></div> | ||
15 | <p> | ||
16 | By default, the OpenEmbedded build system disables | ||
17 | components that have commercial or other special licensing | ||
18 | requirements. | ||
19 | Such requirements are defined on a | ||
20 | recipe-by-recipe basis through the | ||
21 | <a class="link" href="../ref-manual/var-LICENSE_FLAGS.html" target="_self"><code class="filename">LICENSE_FLAGS</code></a> | ||
22 | variable definition in the affected recipe. | ||
23 | For instance, the | ||
24 | <code class="filename">poky/meta/recipes-multimedia/gstreamer/gst-plugins-ugly</code> | ||
25 | recipe contains the following statement: | ||
26 | </p> | ||
27 | <pre class="literallayout"> | ||
28 | LICENSE_FLAGS = "commercial" | ||
29 | </pre> | ||
30 | <p> | ||
31 | Here is a slightly more complicated example that contains both | ||
32 | an explicit recipe name and version (after variable expansion): | ||
33 | </p> | ||
34 | <pre class="literallayout"> | ||
35 | LICENSE_FLAGS = "license_${PN}_${PV}" | ||
36 | </pre> | ||
37 | <p> | ||
38 | In order for a component restricted by a | ||
39 | <code class="filename">LICENSE_FLAGS</code> definition to be enabled and | ||
40 | included in an image, it needs to have a matching entry in the | ||
41 | global | ||
42 | <a class="link" href="../ref-manual/var-LICENSE_FLAGS_WHITELIST.html" target="_self"><code class="filename">LICENSE_FLAGS_WHITELIST</code></a> | ||
43 | variable, which is a variable typically defined in your | ||
44 | <code class="filename">local.conf</code> file. | ||
45 | For example, to enable the | ||
46 | <code class="filename">poky/meta/recipes-multimedia/gstreamer/gst-plugins-ugly</code> | ||
47 | package, you could add either the string | ||
48 | "commercial_gst-plugins-ugly" or the more general string | ||
49 | "commercial" to <code class="filename">LICENSE_FLAGS_WHITELIST</code>. | ||
50 | See the | ||
51 | "<a class="link" href="license-flag-matching.html" title="3.7.2.1. License Flag Matching">License Flag Matching</a>" | ||
52 | section for a full | ||
53 | explanation of how <code class="filename">LICENSE_FLAGS</code> matching | ||
54 | works. | ||
55 | Here is the example: | ||
56 | </p> | ||
57 | <pre class="literallayout"> | ||
58 | LICENSE_FLAGS_WHITELIST = "commercial_gst-plugins-ugly" | ||
59 | </pre> | ||
60 | <p> | ||
61 | Likewise, to additionally enable the package built from the | ||
62 | recipe containing | ||
63 | <code class="filename">LICENSE_FLAGS = "license_${PN}_${PV}"</code>, | ||
64 | and assuming that the actual recipe name was | ||
65 | <code class="filename">emgd_1.10.bb</code>, the following string would | ||
66 | enable that package as well as the original | ||
67 | <code class="filename">gst-plugins-ugly</code> package: | ||
68 | </p> | ||
69 | <pre class="literallayout"> | ||
70 | LICENSE_FLAGS_WHITELIST = "commercial_gst-plugins-ugly license_emgd_1.10" | ||
71 | </pre> | ||
72 | <p> | ||
73 | As a convenience, you do not need to specify the complete | ||
74 | license string in the whitelist for every package. | ||
75 | You can use an abbreviated form, which consists | ||
76 | of just the first portion or portions of the license | ||
77 | string before the initial underscore character or characters. | ||
78 | A partial string will match any license that contains the | ||
79 | given string as the first portion of its license. | ||
80 | For example, the following whitelist string will also match | ||
81 | both of the packages previously mentioned as well as any other | ||
82 | packages that have licenses starting with "commercial" or | ||
83 | "license". | ||
84 | </p> | ||
85 | <pre class="literallayout"> | ||
86 | LICENSE_FLAGS_WHITELIST = "commercial license" | ||
87 | </pre> | ||
88 | <p> | ||
89 | </p> | ||
90 | </div></body> | ||
91 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.6.2. Enabling Wayland in an Image</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="wayland.html" title="3.6. Wayland"> | ||
9 | <link rel="prev" href="wayland-support.html" title="3.6.1. Support"> | ||
10 | <link rel="next" href="enable-building.html" title="3.6.2.1. Building"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.6.2. Enabling Wayland in an Image"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="enabling-wayland-in-an-image"></a>3.6.2. Enabling Wayland in an Image</h3></div></div></div> | ||
15 | <p> | ||
16 | To enable Wayland, you need to enable it to be built and enable | ||
17 | it to be included in the image. | ||
18 | </p> | ||
19 | </div></body> | ||
20 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.5. Fakeroot and Pseudo</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="automatically-added-runtime-dependencies.html" title="3.4. Automatically Added Runtime Dependencies"> | ||
10 | <link rel="next" href="wayland.html" title="3.6. Wayland"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.5. Fakeroot and Pseudo"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="fakeroot-and-pseudo"></a>3.5. Fakeroot and Pseudo</h2></div></div></div> | ||
15 | <p> | ||
16 | Some tasks are easier to implement when allowed to perform certain | ||
17 | operations that are normally reserved for the root user (e.g. | ||
18 | <a class="link" href="../ref-manual/ref-tasks-install.html" target="_self"><code class="filename">do_install</code></a>, | ||
19 | <a class="link" href="../ref-manual/ref-tasks-package_write_deb.html" target="_self"><code class="filename">do_package_write*</code></a>, | ||
20 | <a class="link" href="../ref-manual/ref-tasks-rootfs.html" target="_self"><code class="filename">do_rootfs</code></a>, | ||
21 | and | ||
22 | <a class="link" href="../ref-manual/ref-tasks-image.html" target="_self"><code class="filename">do_image*</code></a>). | ||
23 | For example, the <code class="filename">do_install</code> task benefits | ||
24 | from being able to set the UID and GID of installed files to | ||
25 | arbitrary values. | ||
26 | </p> | ||
27 | <p> | ||
28 | One approach to allowing tasks to perform root-only operations | ||
29 | would be to require BitBake to run as root. | ||
30 | However, this method is cumbersome and has security issues. | ||
31 | The approach that is actually used is to run tasks that benefit | ||
32 | from root privileges in a "fake" root environment. | ||
33 | Within this environment, the task and its child processes believe | ||
34 | that they are running as the root user, and see an internally | ||
35 | consistent view of the filesystem. | ||
36 | As long as generating the final output (e.g. a package or an image) | ||
37 | does not require root privileges, the fact that some earlier | ||
38 | steps ran in a fake root environment does not cause problems. | ||
39 | </p> | ||
40 | <p> | ||
41 | The capability to run tasks in a fake root environment is known as | ||
42 | "<a class="ulink" href="http://man.he.net/man1/fakeroot" target="_self">fakeroot</a>", | ||
43 | which is derived from the BitBake keyword/variable | ||
44 | flag that requests a fake root environment for a task. | ||
45 | </p> | ||
46 | <p> | ||
47 | In the OpenEmbedded build system, the program that implements | ||
48 | fakeroot is known as Pseudo. | ||
49 | Pseudo overrides system calls by using the environment variable | ||
50 | <code class="filename">LD_PRELOAD</code>, which results in the illusion | ||
51 | of running as root. | ||
52 | To keep track of "fake" file ownership and permissions resulting | ||
53 | from operations that require root permissions, Pseudo uses | ||
54 | an SQLite 3 database. | ||
55 | This database is stored in | ||
56 | <code class="filename">${</code><a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a><code class="filename">}/pseudo/files.db</code> | ||
57 | for individual recipes. | ||
58 | Storing the database in a file as opposed to in memory | ||
59 | gives persistence between tasks and builds, which is not | ||
60 | accomplished using fakeroot. | ||
61 | </p> | ||
62 | <div class="note" title="Caution" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
63 | <h3 class="title">Caution</h3> | ||
64 | If you add your own task that manipulates the same files or | ||
65 | directories as a fakeroot task, then that task also needs to | ||
66 | run under fakeroot. | ||
67 | Otherwise, the task cannot run root-only operations, and | ||
68 | cannot see the fake file ownership and permissions set by the | ||
69 | other task. | ||
70 | You need to also add a dependency on | ||
71 | <code class="filename">virtual/fakeroot-native:do_populate_sysroot</code>, | ||
72 | giving the following: | ||
73 | <pre class="literallayout"> | ||
74 | fakeroot do_mytask () { | ||
75 | ... | ||
76 | } | ||
77 | do_mytask[depends] += "virtual/fakeroot-native:do_populate_sysroot" | ||
78 | </pre> | ||
79 | </div> | ||
80 | <p> | ||
81 | For more information, see the | ||
82 | <a class="link" href="../bitbake-user-manual/var-FAKEROOT.html" target="_self"><code class="filename">FAKEROOT*</code></a> | ||
83 | variables in the BitBake User Manual. | ||
84 | You can also reference the | ||
85 | "<a class="ulink" href="http://www.ibm.com/developerworks/opensource/library/os-aapseudo1/index.html" target="_self">Pseudo</a>" | ||
86 | and | ||
87 | "<a class="ulink" href="https://github.com/wrpseudo/pseudo/wiki/WhyNotFakeroot" target="_self">Why Not Fakeroot?</a>" | ||
88 | articles for background information on Pseudo. | ||
89 | </p> | ||
90 | </div></body> | ||
91 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.4. Git</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="workflows.html" title="2.3. Workflows"> | ||
10 | <link rel="next" href="repositories-tags-and-branches.html" title="2.4.1. Repositories, Tags, and Branches"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.4. Git"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="git"></a>2.4. Git</h2></div></div></div> | ||
15 | <p> | ||
16 | The Yocto Project makes extensive use of Git, which is a | ||
17 | free, open source distributed version control system. | ||
18 | Git supports distributed development, non-linear development, | ||
19 | and can handle large projects. | ||
20 | It is best that you have some fundamental understanding | ||
21 | of how Git tracks projects and how to work with Git if | ||
22 | you are going to use the Yocto Project for development. | ||
23 | This section provides a quick overview of how Git works and | ||
24 | provides you with a summary of some essential Git commands. | ||
25 | </p> | ||
26 | <div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
27 | <h3 class="title">Notes</h3> | ||
28 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
29 | <li class="listitem"><p> | ||
30 | For more information on Git, see | ||
31 | <a class="ulink" href="http://git-scm.com/documentation" target="_self">http://git-scm.com/documentation</a>. | ||
32 | </p></li> | ||
33 | <li class="listitem"><p> | ||
34 | If you need to download Git, it is recommended that you add | ||
35 | Git to your system through your distribution's "software | ||
36 | store" (e.g. for Ubuntu, use the Ubuntu Software feature). | ||
37 | For the Git download page, see | ||
38 | <a class="ulink" href="http://git-scm.com/download" target="_self">http://git-scm.com/download</a>. | ||
39 | </p></li> | ||
40 | <li class="listitem"><p> | ||
41 | For examples beyond the limited few in this section on how | ||
42 | to use Git with the Yocto Project, see the | ||
43 | "<a class="link" href="../dev-manual/working-with-yocto-project-source-files.html" target="_self">Working With Yocto Project Source Files</a>" | ||
44 | section in the Yocto Project Development Tasks Manual. | ||
45 | </p></li> | ||
46 | </ul></div> | ||
47 | </div> | ||
48 | <p> | ||
49 | </p> | ||
50 | </div></body> | ||
51 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.5. Image Generation</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="package-splitting-dev-environment.html" title="2.8.5.4. Package Splitting"> | ||
10 | <link rel="next" href="sdk-generation-dev-environment.html" title="2.8.5.6. SDK Generation"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.5. Image Generation"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="image-generation-dev-environment"></a>2.8.5.5. Image Generation</h4></div></div></div> | ||
15 | <p> | ||
16 | Once packages are split and stored in the Package Feeds area, | ||
17 | the OpenEmbedded build system uses BitBake to generate the | ||
18 | root filesystem image: | ||
19 | </p> | ||
20 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 630px"><td align="center"><img src="figures/image-generation.png" align="middle" width="540"></td></tr></table> | ||
21 | <p> | ||
22 | </p> | ||
23 | <p> | ||
24 | The image generation process consists of several stages and | ||
25 | depends on several tasks and variables. | ||
26 | The | ||
27 | <a class="link" href="../ref-manual/ref-tasks-rootfs.html" target="_self"><code class="filename">do_rootfs</code></a> | ||
28 | task creates the root filesystem (file and directory structure) | ||
29 | for an image. | ||
30 | This task uses several key variables to help create the list | ||
31 | of packages to actually install: | ||
32 | </p> | ||
33 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
34 | <li class="listitem"><p><a class="link" href="../ref-manual/var-IMAGE_INSTALL.html" target="_self"><code class="filename">IMAGE_INSTALL</code></a>: | ||
35 | Lists out the base set of packages to install from | ||
36 | the Package Feeds area.</p></li> | ||
37 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PACKAGE_EXCLUDE.html" target="_self"><code class="filename">PACKAGE_EXCLUDE</code></a>: | ||
38 | Specifies packages that should not be installed. | ||
39 | </p></li> | ||
40 | <li class="listitem"><p><a class="link" href="../ref-manual/var-IMAGE_FEATURES.html" target="_self"><code class="filename">IMAGE_FEATURES</code></a>: | ||
41 | Specifies features to include in the image. | ||
42 | Most of these features map to additional packages for | ||
43 | installation.</p></li> | ||
44 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PACKAGE_CLASSES.html" target="_self"><code class="filename">PACKAGE_CLASSES</code></a>: | ||
45 | Specifies the package backend to use and consequently | ||
46 | helps determine where to locate packages within the | ||
47 | Package Feeds area.</p></li> | ||
48 | <li class="listitem"><p><a class="link" href="../ref-manual/var-IMAGE_LINGUAS.html" target="_self"><code class="filename">IMAGE_LINGUAS</code></a>: | ||
49 | Determines the language(s) for which additional | ||
50 | language support packages are installed. | ||
51 | </p></li> | ||
52 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PACKAGE_INSTALL.html" target="_self"><code class="filename">PACKAGE_INSTALL</code></a>: | ||
53 | The final list of packages passed to the package manager | ||
54 | for installation into the image. | ||
55 | </p></li> | ||
56 | </ul></div> | ||
57 | <p> | ||
58 | </p> | ||
59 | <p> | ||
60 | With | ||
61 | <a class="link" href="../ref-manual/var-IMAGE_ROOTFS.html" target="_self"><code class="filename">IMAGE_ROOTFS</code></a> | ||
62 | pointing to the location of the filesystem under construction and | ||
63 | the <code class="filename">PACKAGE_INSTALL</code> variable providing the | ||
64 | final list of packages to install, the root file system is | ||
65 | created. | ||
66 | </p> | ||
67 | <p> | ||
68 | Package installation is under control of the package manager | ||
69 | (e.g. dnf/rpm, opkg, or apt/dpkg) regardless of whether or | ||
70 | not package management is enabled for the target. | ||
71 | At the end of the process, if package management is not | ||
72 | enabled for the target, the package manager's data files | ||
73 | are deleted from the root filesystem. | ||
74 | As part of the final stage of package installation, postinstall | ||
75 | scripts that are part of the packages are run. | ||
76 | Any scripts that fail to run | ||
77 | on the build host are run on the target when the target system | ||
78 | is first booted. | ||
79 | If you are using a | ||
80 | <a class="link" href="../dev-manual/creating-a-read-only-root-filesystem.html" target="_self">read-only root filesystem</a>, | ||
81 | all the post installation scripts must succeed during the | ||
82 | package installation phase since the root filesystem is | ||
83 | read-only. | ||
84 | </p> | ||
85 | <p> | ||
86 | The final stages of the <code class="filename">do_rootfs</code> task | ||
87 | handle post processing. | ||
88 | Post processing includes creation of a manifest file and | ||
89 | optimizations. | ||
90 | </p> | ||
91 | <p> | ||
92 | The manifest file (<code class="filename">.manifest</code>) resides | ||
93 | in the same directory as the root filesystem image. | ||
94 | This file lists out, line-by-line, the installed packages. | ||
95 | The manifest file is useful for the | ||
96 | <a class="link" href="../ref-manual/ref-classes-testimage*.html" target="_self"><code class="filename">testimage</code></a> | ||
97 | class, for example, to determine whether or not to run | ||
98 | specific tests. | ||
99 | See the | ||
100 | <a class="link" href="../ref-manual/var-IMAGE_MANIFEST.html" target="_self"><code class="filename">IMAGE_MANIFEST</code></a> | ||
101 | variable for additional information. | ||
102 | </p> | ||
103 | <p> | ||
104 | Optimizing processes run across the image include | ||
105 | <code class="filename">mklibs</code>, <code class="filename">prelink</code>, | ||
106 | and any other post-processing commands as defined by the | ||
107 | <a class="link" href="../ref-manual/var-ROOTFS_POSTPROCESS_COMMAND.html" target="_self"><code class="filename">ROOTFS_POSTPROCESS_COMMAND</code></a> | ||
108 | variable. | ||
109 | The <code class="filename">mklibs</code> process optimizes the size | ||
110 | of the libraries, while the | ||
111 | <code class="filename">prelink</code> process optimizes the dynamic | ||
112 | linking of shared libraries to reduce start up time of | ||
113 | executables. | ||
114 | </p> | ||
115 | <p> | ||
116 | After the root filesystem is built, processing begins on | ||
117 | the image through the | ||
118 | <a class="link" href="../ref-manual/ref-tasks-image.html" target="_self"><code class="filename">do_image</code></a> | ||
119 | task. | ||
120 | The build system runs any pre-processing commands as defined | ||
121 | by the | ||
122 | <a class="link" href="../ref-manual/var-IMAGE_PREPROCESS_COMMAND.html" target="_self"><code class="filename">IMAGE_PREPROCESS_COMMAND</code></a> | ||
123 | variable. | ||
124 | This variable specifies a list of functions to call before | ||
125 | the OpenEmbedded build system creates the final image output | ||
126 | files. | ||
127 | </p> | ||
128 | <p> | ||
129 | The OpenEmbedded build system dynamically creates | ||
130 | <code class="filename">do_image_*</code> tasks as needed, based | ||
131 | on the image types specified in the | ||
132 | <a class="link" href="../ref-manual/var-IMAGE_FSTYPES.html" target="_self"><code class="filename">IMAGE_FSTYPES</code></a> | ||
133 | variable. | ||
134 | The process turns everything into an image file or a set of | ||
135 | image files and compresses the root filesystem image to reduce | ||
136 | the overall size of the image. | ||
137 | The formats used for the root filesystem depend on the | ||
138 | <code class="filename">IMAGE_FSTYPES</code> variable. | ||
139 | </p> | ||
140 | <p> | ||
141 | As an example, a dynamically created task when creating a | ||
142 | particular image <em class="replaceable"><code>type</code></em> would take the | ||
143 | following form: | ||
144 | </p> | ||
145 | <pre class="literallayout"> | ||
146 | do_image_<em class="replaceable"><code>type</code></em>[depends] | ||
147 | </pre> | ||
148 | <p> | ||
149 | So, if the <em class="replaceable"><code>type</code></em> as specified by the | ||
150 | <code class="filename">IMAGE_FSTYPES</code> were | ||
151 | <code class="filename">ext4</code>, the dynamically generated task | ||
152 | would be as follows: | ||
153 | </p> | ||
154 | <pre class="literallayout"> | ||
155 | do_image_ext4[depends] | ||
156 | </pre> | ||
157 | <p> | ||
158 | </p> | ||
159 | <p> | ||
160 | The final task involved in image creation is the | ||
161 | <a class="link" href="../ref-manual/ref-tasks-image-complete.html" target="_self"><code class="filename">do_image_complete</code></a> | ||
162 | task. | ||
163 | This task completes the image by applying any image | ||
164 | post processing as defined through the | ||
165 | <a class="link" href="../ref-manual/var-IMAGE_POSTPROCESS_COMMAND.html" target="_self"><code class="filename">IMAGE_POSTPROCESS_COMMAND</code></a> | ||
166 | variable. | ||
167 | The variable specifies a list of functions to call once the | ||
168 | OpenEmbedded build system has created the final image output | ||
169 | files. | ||
170 | </p> | ||
171 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
172 | <h3 class="title">Note</h3> | ||
173 | The entire image generation process is run under Pseudo. | ||
174 | Running under Pseudo ensures that the files in the root | ||
175 | filesystem have correct ownership. | ||
176 | </div> | ||
177 | </div></body> | ||
178 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/images-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/images-dev-environment.html new file mode 100644 index 0000000000..2561f1f4a6 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/images-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.6. Images</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="setscene-tasks-and-shared-state.html" title="2.8.5.8. Setscene Tasks and Shared State"> | ||
10 | <link rel="next" href="sdk-dev-environment.html" title="2.8.7. Application Development SDK"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.6. Images"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="images-dev-environment"></a>2.8.6. Images</h3></div></div></div> | ||
15 | <p> | ||
16 | The images produced by the OpenEmbedded build system | ||
17 | are compressed forms of the | ||
18 | root filesystem that are ready to boot on a target device. | ||
19 | You can see from the | ||
20 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a> | ||
21 | that BitBake output, in part, consists of images. | ||
22 | This section is going to look more closely at this output: | ||
23 | </p> | ||
24 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="495"><tr style="height: 495px"><td align="center"><img src="figures/images.png" align="middle" width="495"></td></tr></table> | ||
25 | <p> | ||
26 | </p> | ||
27 | <p> | ||
28 | For a list of example images that the Yocto Project provides, | ||
29 | see the | ||
30 | "<a class="link" href="../ref-manual/ref-images.html" target="_self">Images</a>" | ||
31 | chapter in the Yocto Project Reference Manual. | ||
32 | </p> | ||
33 | <p> | ||
34 | Images are written out to the | ||
35 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a> | ||
36 | inside the | ||
37 | <code class="filename">tmp/deploy/images/<em class="replaceable"><code>machine</code></em>/</code> | ||
38 | folder as shown in the figure. | ||
39 | This folder contains any files expected to be loaded on the | ||
40 | target device. | ||
41 | The | ||
42 | <a class="link" href="../ref-manual/var-DEPLOY_DIR.html" target="_self"><code class="filename">DEPLOY_DIR</code></a> | ||
43 | variable points to the <code class="filename">deploy</code> directory, | ||
44 | while the | ||
45 | <a class="link" href="../ref-manual/var-DEPLOY_DIR_IMAGE.html" target="_self"><code class="filename">DEPLOY_DIR_IMAGE</code></a> | ||
46 | variable points to the appropriate directory containing images for | ||
47 | the current configuration. | ||
48 | </p> | ||
49 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
50 | <li class="listitem"><p><code class="filename"><em class="replaceable"><code>kernel-image</code></em></code>: | ||
51 | A kernel binary file. | ||
52 | The | ||
53 | <a class="link" href="../ref-manual/var-KERNEL_IMAGETYPE.html" target="_self"><code class="filename">KERNEL_IMAGETYPE</code></a> | ||
54 | variable setting determines the naming scheme for the | ||
55 | kernel image file. | ||
56 | Depending on that variable, the file could begin with | ||
57 | a variety of naming strings. | ||
58 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
59 | directory can contain multiple image files for the | ||
60 | machine.</p></li> | ||
61 | <li class="listitem"><p><code class="filename"><em class="replaceable"><code>root-filesystem-image</code></em></code>: | ||
62 | Root filesystems for the target device (e.g. | ||
63 | <code class="filename">*.ext3</code> or <code class="filename">*.bz2</code> | ||
64 | files). | ||
65 | The | ||
66 | <a class="link" href="../ref-manual/var-IMAGE_FSTYPES.html" target="_self"><code class="filename">IMAGE_FSTYPES</code></a> | ||
67 | variable setting determines the root filesystem image | ||
68 | type. | ||
69 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
70 | directory can contain multiple root filesystems for the | ||
71 | machine.</p></li> | ||
72 | <li class="listitem"><p><code class="filename"><em class="replaceable"><code>kernel-modules</code></em></code>: | ||
73 | Tarballs that contain all the modules built for the kernel. | ||
74 | Kernel module tarballs exist for legacy purposes and | ||
75 | can be suppressed by setting the | ||
76 | <a class="link" href="../ref-manual/var-MODULE_TARBALL_DEPLOY.html" target="_self"><code class="filename">MODULE_TARBALL_DEPLOY</code></a> | ||
77 | variable to "0". | ||
78 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
79 | directory can contain multiple kernel module tarballs | ||
80 | for the machine.</p></li> | ||
81 | <li class="listitem"><p><code class="filename"><em class="replaceable"><code>bootloaders</code></em></code>: | ||
82 | Bootloaders supporting the image, if applicable to the | ||
83 | target machine. | ||
84 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
85 | directory can contain multiple bootloaders for the | ||
86 | machine.</p></li> | ||
87 | <li class="listitem"><p><code class="filename"><em class="replaceable"><code>symlinks</code></em></code>: | ||
88 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
89 | folder contains | ||
90 | a symbolic link that points to the most recently built file | ||
91 | for each machine. | ||
92 | These links might be useful for external scripts that | ||
93 | need to obtain the latest version of each file. | ||
94 | </p></li> | ||
95 | </ul></div> | ||
96 | <p> | ||
97 | </p> | ||
98 | </div></body> | ||
99 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/index.html b/documentation/getting-started/eclipse/html/getting-started/index.html new file mode 100644 index 0000000000..94826ce0c6 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/index.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>Getting Started With Yocto Project</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="next" href="overview-manual-intro.html" title="Chapter 1. The Yocto Project Overview Manual"> | ||
9 | </head> | ||
10 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div lang="en" class="book" title="Getting Started With Yocto Project"> | ||
11 | <div class="titlepage"> | ||
12 | <div> | ||
13 | <div><h1 class="title"> | ||
14 | <a name="getting-started-manual"></a> | ||
15 | Getting Started With Yocto Project | ||
16 | </h1></div> | ||
17 | <div><div class="authorgroup"> | ||
18 | <div class="author"> | ||
19 | <h3 class="author"> | ||
20 | <span class="firstname">Scott</span> <span class="surname">Rifenbark</span> | ||
21 | </h3> | ||
22 | <div class="affiliation"> | ||
23 | <span class="orgname">Scotty's Documentation Services, INC<br></span> | ||
24 | </div> | ||
25 | <code class="email"><<a class="email" href="mailto:srifenbark@gmail.com">srifenbark@gmail.com</a>></code> | ||
26 | </div> | ||
27 | </div></div> | ||
28 | <div><p class="copyright">Copyright © 2010-2018 Linux Foundation</p></div> | ||
29 | <div><div class="legalnotice" title="Legal Notice"> | ||
30 | <a name="idm45823191546992"></a> | ||
31 | <p> | ||
32 | Permission is granted to copy, distribute and/or modify this document under | ||
33 | the terms of the <a class="ulink" href="http://creativecommons.org/licenses/by-sa/2.0/uk/" target="_self"> | ||
34 | Creative Commons Attribution-Share Alike 2.0 UK: England & Wales</a> as published by | ||
35 | Creative Commons. | ||
36 | </p> | ||
37 | <div class="note" title="Manual Notes" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
38 | <h3 class="title">Manual Notes</h3> | ||
39 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
40 | <li class="listitem"><p> | ||
41 | This version of the | ||
42 | <span class="emphasis"><em>Yocto Project Overview Manual</em></span> | ||
43 | is for the 2.5 release of the | ||
44 | Yocto Project. | ||
45 | To be sure you have the latest version of the manual | ||
46 | for this release, use the manual from the | ||
47 | <a class="ulink" href="http://www.yoctoproject.org/documentation" target="_self">Yocto Project documentation page</a>. | ||
48 | </p></li> | ||
49 | <li class="listitem"><p> | ||
50 | For manuals associated with other releases of the Yocto | ||
51 | Project, go to the | ||
52 | <a class="ulink" href="http://www.yoctoproject.org/documentation" target="_self">Yocto Project documentation page</a> | ||
53 | and use the drop-down "Active Releases" button | ||
54 | and choose the manual associated with the desired | ||
55 | Yocto Project. | ||
56 | </p></li> | ||
57 | <li class="listitem"><p> | ||
58 | To report any inaccuracies or problems with this | ||
59 | manual, send an email to the Yocto Project | ||
60 | discussion group at | ||
61 | <code class="filename">yocto@yoctoproject.com</code> or log into | ||
62 | the freenode <code class="filename">#yocto</code> channel. | ||
63 | </p></li> | ||
64 | </ul></div> | ||
65 | </div> | ||
66 | </div></div> | ||
67 | <div><div class="revhistory"><table border="1" width="100%" summary="Revision history"> | ||
68 | <tr><th align="left" valign="top" colspan="2"><b>Revision History</b></th></tr> | ||
69 | <tr> | ||
70 | <td align="left">Revision 2.5</td> | ||
71 | <td align="left">April 2018</td> | ||
72 | </tr> | ||
73 | <tr><td align="left" colspan="2">The initial document released with the Yocto Project 2.5 Release.</td></tr> | ||
74 | </table></div></div> | ||
75 | </div> | ||
76 | <hr> | ||
77 | </div> | ||
78 | <div class="toc"> | ||
79 | <p><b>Table of Contents</b></p> | ||
80 | <dl> | ||
81 | <dt><span class="chapter"><a href="overview-manual-intro.html">1. The Yocto Project Overview Manual</a></span></dt> | ||
82 | <dd><dl> | ||
83 | <dt><span class="section"><a href="overview-welcome.html">1.1. Welcome</a></span></dt> | ||
84 | <dt><span class="section"><a href="overview-other-information.html">1.2. Other Information</a></span></dt> | ||
85 | </dl></dd> | ||
86 | <dt><span class="chapter"><a href="overview-development-environment.html">2. The Yocto Project Development Environment</a></span></dt> | ||
87 | <dd><dl> | ||
88 | <dt><span class="section"><a href="yp-intro.html">2.1. Introduction</a></span></dt> | ||
89 | <dt><span class="section"><a href="open-source-philosophy.html">2.2. Open Source Philosophy</a></span></dt> | ||
90 | <dt><span class="section"><a href="workflows.html">2.3. Workflows</a></span></dt> | ||
91 | <dt><span class="section"><a href="git.html">2.4. Git</a></span></dt> | ||
92 | <dd><dl> | ||
93 | <dt><span class="section"><a href="repositories-tags-and-branches.html">2.4.1. Repositories, Tags, and Branches</a></span></dt> | ||
94 | <dt><span class="section"><a href="basic-commands.html">2.4.2. Basic Commands</a></span></dt> | ||
95 | </dl></dd> | ||
96 | <dt><span class="section"><a href="yocto-project-repositories.html">2.5. Yocto Project Source Repositories</a></span></dt> | ||
97 | <dt><span class="section"><a href="licensing.html">2.6. Licensing</a></span></dt> | ||
98 | <dt><span class="section"><a href="recipe-syntax.html">2.7. Recipe Syntax</a></span></dt> | ||
99 | <dt><span class="section"><a href="development-concepts.html">2.8. Development Concepts</a></span></dt> | ||
100 | <dd><dl> | ||
101 | <dt><span class="section"><a href="user-configuration.html">2.8.1. User Configuration</a></span></dt> | ||
102 | <dt><span class="section"><a href="metadata-machine-configuration-and-policy-configuration.html">2.8.2. Metadata, Machine Configuration, and Policy Configuration</a></span></dt> | ||
103 | <dt><span class="section"><a href="sources-dev-environment.html">2.8.3. Sources</a></span></dt> | ||
104 | <dt><span class="section"><a href="package-feeds-dev-environment.html">2.8.4. Package Feeds</a></span></dt> | ||
105 | <dt><span class="section"><a href="bitbake-dev-environment.html">2.8.5. BitBake</a></span></dt> | ||
106 | <dt><span class="section"><a href="images-dev-environment.html">2.8.6. Images</a></span></dt> | ||
107 | <dt><span class="section"><a href="sdk-dev-environment.html">2.8.7. Application Development SDK</a></span></dt> | ||
108 | </dl></dd> | ||
109 | </dl></dd> | ||
110 | <dt><span class="chapter"><a href="overview-concepts.html">3. Yocto Project Concepts</a></span></dt> | ||
111 | <dd><dl> | ||
112 | <dt><span class="section"><a href="yocto-project-components.html">3.1. Yocto Project Components</a></span></dt> | ||
113 | <dd><dl> | ||
114 | <dt><span class="section"><a href="usingpoky-components-bitbake.html">3.1.1. BitBake</a></span></dt> | ||
115 | <dt><span class="section"><a href="usingpoky-components-metadata.html">3.1.2. Metadata (Recipes)</a></span></dt> | ||
116 | <dt><span class="section"><a href="metadata-virtual-providers.html">3.1.3. Metadata (Virtual Providers)</a></span></dt> | ||
117 | <dt><span class="section"><a href="usingpoky-components-classes.html">3.1.4. Classes</a></span></dt> | ||
118 | <dt><span class="section"><a href="usingpoky-components-configuration.html">3.1.5. Configuration</a></span></dt> | ||
119 | </dl></dd> | ||
120 | <dt><span class="section"><a href="cross-development-toolchain-generation.html">3.2. Cross-Development Toolchain Generation</a></span></dt> | ||
121 | <dt><span class="section"><a href="shared-state-cache.html">3.3. Shared State Cache</a></span></dt> | ||
122 | <dd><dl> | ||
123 | <dt><span class="section"><a href="overall-architecture.html">3.3.1. Overall Architecture</a></span></dt> | ||
124 | <dt><span class="section"><a href="overview-checksums.html">3.3.2. Checksums (Signatures)</a></span></dt> | ||
125 | <dt><span class="section"><a href="shared-state.html">3.3.3. Shared State</a></span></dt> | ||
126 | <dt><span class="section"><a href="tips-and-tricks.html">3.3.4. Tips and Tricks</a></span></dt> | ||
127 | </dl></dd> | ||
128 | <dt><span class="section"><a href="automatically-added-runtime-dependencies.html">3.4. Automatically Added Runtime Dependencies</a></span></dt> | ||
129 | <dt><span class="section"><a href="fakeroot-and-pseudo.html">3.5. Fakeroot and Pseudo</a></span></dt> | ||
130 | <dt><span class="section"><a href="wayland.html">3.6. Wayland</a></span></dt> | ||
131 | <dd><dl> | ||
132 | <dt><span class="section"><a href="wayland-support.html">3.6.1. Support</a></span></dt> | ||
133 | <dt><span class="section"><a href="enabling-wayland-in-an-image.html">3.6.2. Enabling Wayland in an Image</a></span></dt> | ||
134 | <dt><span class="section"><a href="running-weston.html">3.6.3. Running Weston</a></span></dt> | ||
135 | </dl></dd> | ||
136 | <dt><span class="section"><a href="overview-licenses.html">3.7. Licenses</a></span></dt> | ||
137 | <dd><dl> | ||
138 | <dt><span class="section"><a href="usingpoky-configuring-LIC_FILES_CHKSUM.html">3.7.1. Tracking License Changes</a></span></dt> | ||
139 | <dt><span class="section"><a href="enabling-commercially-licensed-recipes.html">3.7.2. Enabling Commercially Licensed Recipes</a></span></dt> | ||
140 | </dl></dd> | ||
141 | <dt><span class="section"><a href="x32.html">3.8. x32 psABI</a></span></dt> | ||
142 | </dl></dd> | ||
143 | </dl> | ||
144 | </div> | ||
145 | |||
146 | |||
147 | |||
148 | |||
149 | |||
150 | |||
151 | |||
152 | |||
153 | </div></body> | ||
154 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/index.xml b/documentation/getting-started/eclipse/html/getting-started/index.xml new file mode 100644 index 0000000000..9edb4b92ac --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/index.xml | |||
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1 | <?xml version="1.0" encoding="utf-8" standalone="no"?> | ||
2 | <index/> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/invalidating-shared-state.html b/documentation/getting-started/eclipse/html/getting-started/invalidating-shared-state.html new file mode 100644 index 0000000000..ef4a2aac5e --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/invalidating-shared-state.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3.4.2. Invalidating Shared State</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="tips-and-tricks.html" title="3.3.4. Tips and Tricks"> | ||
9 | <link rel="prev" href="overview-debugging.html" title="3.3.4.1. Debugging"> | ||
10 | <link rel="next" href="automatically-added-runtime-dependencies.html" title="3.4. Automatically Added Runtime Dependencies"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3.4.2. Invalidating Shared State"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="invalidating-shared-state"></a>3.3.4.2. Invalidating Shared State</h4></div></div></div> | ||
15 | <p> | ||
16 | The OpenEmbedded build system uses checksums and shared | ||
17 | state cache to avoid unnecessarily rebuilding tasks. | ||
18 | Collectively, this scheme is known as "shared state code." | ||
19 | </p> | ||
20 | <p> | ||
21 | As with all schemes, this one has some drawbacks. | ||
22 | It is possible that you could make implicit changes to your | ||
23 | code that the checksum calculations do not take into | ||
24 | account. | ||
25 | These implicit changes affect a task's output but do not | ||
26 | trigger the shared state code into rebuilding a recipe. | ||
27 | Consider an example during which a tool changes its output. | ||
28 | Assume that the output of <code class="filename">rpmdeps</code> | ||
29 | changes. | ||
30 | The result of the change should be that all the | ||
31 | <code class="filename">package</code> and | ||
32 | <code class="filename">package_write_rpm</code> shared state cache | ||
33 | items become invalid. | ||
34 | However, because the change to the output is | ||
35 | external to the code and therefore implicit, | ||
36 | the associated shared state cache items do not become | ||
37 | invalidated. | ||
38 | In this case, the build process uses the cached items | ||
39 | rather than running the task again. | ||
40 | Obviously, these types of implicit changes can cause | ||
41 | problems. | ||
42 | </p> | ||
43 | <p> | ||
44 | To avoid these problems during the build, you need to | ||
45 | understand the effects of any changes you make. | ||
46 | Realize that changes you make directly to a function | ||
47 | are automatically factored into the checksum calculation. | ||
48 | Thus, these explicit changes invalidate the associated | ||
49 | area of shared state cache. | ||
50 | However, you need to be aware of any implicit changes that | ||
51 | are not obvious changes to the code and could affect | ||
52 | the output of a given task. | ||
53 | </p> | ||
54 | <p> | ||
55 | When you identify an implicit change, you can easily | ||
56 | take steps to invalidate the cache and force the tasks | ||
57 | to run. | ||
58 | The steps you can take are as simple as changing a | ||
59 | function's comments in the source code. | ||
60 | For example, to invalidate package shared state files, | ||
61 | change the comment statements of | ||
62 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a> | ||
63 | or the comments of one of the functions it calls. | ||
64 | Even though the change is purely cosmetic, it causes the | ||
65 | checksum to be recalculated and forces the OpenEmbedded | ||
66 | build system to run the task again. | ||
67 | </p> | ||
68 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
69 | <h3 class="title">Note</h3> | ||
70 | For an example of a commit that makes a cosmetic | ||
71 | change to invalidate shared state, see this | ||
72 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/commit/meta/classes/package.bbclass?id=737f8bbb4f27b4837047cb9b4fbfe01dfde36d54" target="_self">commit</a>. | ||
73 | </div> | ||
74 | <p> | ||
75 | </p> | ||
76 | </div></body> | ||
77 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/license-flag-matching.html b/documentation/getting-started/eclipse/html/getting-started/license-flag-matching.html new file mode 100644 index 0000000000..1e08bafad1 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/license-flag-matching.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7.2.1. License Flag Matching</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="enabling-commercially-licensed-recipes.html" title="3.7.2. Enabling Commercially Licensed Recipes"> | ||
9 | <link rel="prev" href="enabling-commercially-licensed-recipes.html" title="3.7.2. Enabling Commercially Licensed Recipes"> | ||
10 | <link rel="next" href="other-variables-related-to-commercial-licenses.html" title="3.7.2.2. Other Variables Related to Commercial Licenses"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7.2.1. License Flag Matching"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="license-flag-matching"></a>3.7.2.1. License Flag Matching</h4></div></div></div> | ||
15 | <p> | ||
16 | License flag matching allows you to control what recipes | ||
17 | the OpenEmbedded build system includes in the build. | ||
18 | Fundamentally, the build system attempts to match | ||
19 | <a class="link" href="../ref-manual/var-LICENSE_FLAGS.html" target="_self"><code class="filename">LICENSE_FLAGS</code></a> | ||
20 | strings found in recipes against | ||
21 | <a class="link" href="../ref-manual/var-LICENSE_FLAGS_WHITELIST.html" target="_self"><code class="filename">LICENSE_FLAGS_WHITELIST</code></a> | ||
22 | strings found in the whitelist. | ||
23 | A match causes the build system to include a recipe in the | ||
24 | build, while failure to find a match causes the build | ||
25 | system to exclude a recipe. | ||
26 | </p> | ||
27 | <p> | ||
28 | In general, license flag matching is simple. | ||
29 | However, understanding some concepts will help you | ||
30 | correctly and effectively use matching. | ||
31 | </p> | ||
32 | <p> | ||
33 | Before a flag | ||
34 | defined by a particular recipe is tested against the | ||
35 | contents of the whitelist, the expanded string | ||
36 | <code class="filename">_${PN}</code> is appended to the flag. | ||
37 | This expansion makes each | ||
38 | <code class="filename">LICENSE_FLAGS</code> value recipe-specific. | ||
39 | After expansion, the string is then matched against the | ||
40 | whitelist. | ||
41 | Thus, specifying | ||
42 | <code class="filename">LICENSE_FLAGS = "commercial"</code> | ||
43 | in recipe "foo", for example, results in the string | ||
44 | <code class="filename">"commercial_foo"</code>. | ||
45 | And, to create a match, that string must appear in the | ||
46 | whitelist. | ||
47 | </p> | ||
48 | <p> | ||
49 | Judicious use of the <code class="filename">LICENSE_FLAGS</code> | ||
50 | strings and the contents of the | ||
51 | <code class="filename">LICENSE_FLAGS_WHITELIST</code> variable | ||
52 | allows you a lot of flexibility for including or excluding | ||
53 | recipes based on licensing. | ||
54 | For example, you can broaden the matching capabilities by | ||
55 | using license flags string subsets in the whitelist. | ||
56 | </p> | ||
57 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
58 | <h3 class="title">Note</h3> | ||
59 | When using a string subset, be sure to use the part of | ||
60 | the expanded string that precedes the appended | ||
61 | underscore character (e.g. | ||
62 | <code class="filename">usethispart_1.3</code>, | ||
63 | <code class="filename">usethispart_1.4</code>, and so forth). | ||
64 | </div> | ||
65 | <p> | ||
66 | For example, simply specifying the string "commercial" in | ||
67 | the whitelist matches any expanded | ||
68 | <code class="filename">LICENSE_FLAGS</code> definition that starts | ||
69 | with the string "commercial" such as "commercial_foo" and | ||
70 | "commercial_bar", which are the strings the build system | ||
71 | automatically generates for hypothetical recipes named | ||
72 | "foo" and "bar" assuming those recipes simply specify the | ||
73 | following: | ||
74 | </p> | ||
75 | <pre class="literallayout"> | ||
76 | LICENSE_FLAGS = "commercial" | ||
77 | </pre> | ||
78 | <p> | ||
79 | Thus, you can choose to exhaustively | ||
80 | enumerate each license flag in the whitelist and | ||
81 | allow only specific recipes into the image, or | ||
82 | you can use a string subset that causes a broader range of | ||
83 | matches to allow a range of recipes into the image. | ||
84 | </p> | ||
85 | <p> | ||
86 | This scheme works even if the | ||
87 | <code class="filename">LICENSE_FLAGS</code> string already | ||
88 | has <code class="filename">_${PN}</code> appended. | ||
89 | For example, the build system turns the license flag | ||
90 | "commercial_1.2_foo" into "commercial_1.2_foo_foo" and | ||
91 | would match both the general "commercial" and the specific | ||
92 | "commercial_1.2_foo" strings found in the whitelist, as | ||
93 | expected. | ||
94 | </p> | ||
95 | <p> | ||
96 | Here are some other scenarios: | ||
97 | </p> | ||
98 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
99 | <li class="listitem"><p> | ||
100 | You can specify a versioned string in the recipe | ||
101 | such as "commercial_foo_1.2" in a "foo" recipe. | ||
102 | The build system expands this string to | ||
103 | "commercial_foo_1.2_foo". | ||
104 | Combine this license flag with a whitelist that has | ||
105 | the string "commercial" and you match the flag | ||
106 | along with any other flag that starts with the | ||
107 | string "commercial". | ||
108 | </p></li> | ||
109 | <li class="listitem"><p> | ||
110 | Under the same circumstances, you can use | ||
111 | "commercial_foo" in the whitelist and the build | ||
112 | system not only matches "commercial_foo_1.2" but | ||
113 | also matches any license flag with the string | ||
114 | "commercial_foo", regardless of the version. | ||
115 | </p></li> | ||
116 | <li class="listitem"><p> | ||
117 | You can be very specific and use both the | ||
118 | package and version parts in the whitelist (e.g. | ||
119 | "commercial_foo_1.2") to specifically match a | ||
120 | versioned recipe. | ||
121 | </p></li> | ||
122 | </ul></div> | ||
123 | <p> | ||
124 | </p> | ||
125 | </div></body> | ||
126 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/licensing.html b/documentation/getting-started/eclipse/html/getting-started/licensing.html new file mode 100644 index 0000000000..ade868705c --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/licensing.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.6. Licensing</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="yocto-project-repositories.html" title="2.5. Yocto Project Source Repositories"> | ||
10 | <link rel="next" href="recipe-syntax.html" title="2.7. Recipe Syntax"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.6. Licensing"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="licensing"></a>2.6. Licensing</h2></div></div></div> | ||
15 | <p> | ||
16 | Because open source projects are open to the public, they have | ||
17 | different licensing structures in place. | ||
18 | License evolution for both Open Source and Free Software has an | ||
19 | interesting history. | ||
20 | If you are interested in this history, you can find basic information | ||
21 | here: | ||
22 | </p> | ||
23 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
24 | <li class="listitem"><p> | ||
25 | <a class="ulink" href="http://en.wikipedia.org/wiki/Open-source_license" target="_self">Open source license history</a> | ||
26 | </p></li> | ||
27 | <li class="listitem"><p> | ||
28 | <a class="ulink" href="http://en.wikipedia.org/wiki/Free_software_license" target="_self">Free software license history</a> | ||
29 | </p></li> | ||
30 | </ul></div> | ||
31 | <p> | ||
32 | </p> | ||
33 | <p> | ||
34 | In general, the Yocto Project is broadly licensed under the | ||
35 | Massachusetts Institute of Technology (MIT) License. | ||
36 | MIT licensing permits the reuse of software within proprietary | ||
37 | software as long as the license is distributed with that software. | ||
38 | MIT is also compatible with the GNU General Public License (GPL). | ||
39 | Patches to the Yocto Project follow the upstream licensing scheme. | ||
40 | You can find information on the MIT license | ||
41 | <a class="ulink" href="http://www.opensource.org/licenses/mit-license.php" target="_self">here</a>. | ||
42 | You can find information on the GNU GPL | ||
43 | <a class="ulink" href="http://www.opensource.org/licenses/LGPL-3.0" target="_self">here</a>. | ||
44 | </p> | ||
45 | <p> | ||
46 | When you build an image using the Yocto Project, the build process | ||
47 | uses a known list of licenses to ensure compliance. | ||
48 | You can find this list in the | ||
49 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a> | ||
50 | at <code class="filename">meta/files/common-licenses</code>. | ||
51 | Once the build completes, the list of all licenses found and used | ||
52 | during that build are kept in the | ||
53 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a> | ||
54 | at <code class="filename">tmp/deploy/licenses</code>. | ||
55 | </p> | ||
56 | <p> | ||
57 | If a module requires a license that is not in the base list, the | ||
58 | build process generates a warning during the build. | ||
59 | These tools make it easier for a developer to be certain of the | ||
60 | licenses with which their shipped products must comply. | ||
61 | However, even with these tools it is still up to the developer to | ||
62 | resolve potential licensing issues. | ||
63 | </p> | ||
64 | <p> | ||
65 | The base list of licenses used by the build process is a combination | ||
66 | of the Software Package Data Exchange (SPDX) list and the Open | ||
67 | Source Initiative (OSI) projects. | ||
68 | <a class="ulink" href="http://spdx.org" target="_self">SPDX Group</a> is a working group of | ||
69 | the Linux Foundation that maintains a specification for a standard | ||
70 | format for communicating the components, licenses, and copyrights | ||
71 | associated with a software package. | ||
72 | <a class="ulink" href="http://opensource.org" target="_self">OSI</a> is a corporation | ||
73 | dedicated to the Open Source Definition and the effort for reviewing | ||
74 | and approving licenses that conform to the Open Source Definition | ||
75 | (OSD). | ||
76 | </p> | ||
77 | <p> | ||
78 | You can find a list of the combined SPDX and OSI licenses that the | ||
79 | Yocto Project uses in the | ||
80 | <code class="filename">meta/files/common-licenses</code> directory in your | ||
81 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a>. | ||
82 | </p> | ||
83 | <p> | ||
84 | For information that can help you maintain compliance with various | ||
85 | open source licensing during the lifecycle of a product created using | ||
86 | the Yocto Project, see the | ||
87 | "<a class="link" href="../dev-manual/maintaining-open-source-license-compliance-during-your-products-lifecycle.html" target="_self">Maintaining Open Source License Compliance During Your Product's Lifecycle</a>" | ||
88 | section in the Yocto Project Development Tasks Manual. | ||
89 | </p> | ||
90 | </div></body> | ||
91 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/local-projects.html b/documentation/getting-started/eclipse/html/getting-started/local-projects.html new file mode 100644 index 0000000000..9ed618701c --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/local-projects.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.3.2. Local Projects</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="sources-dev-environment.html" title="2.8.3. Sources"> | ||
9 | <link rel="prev" href="upstream-project-releases.html" title="2.8.3.1. Upstream Project Releases"> | ||
10 | <link rel="next" href="scms.html" title="2.8.3.3. Source Control Managers (Optional)"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.3.2. Local Projects"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="local-projects"></a>2.8.3.2. Local Projects</h4></div></div></div> | ||
15 | <p> | ||
16 | Local projects are custom bits of software the user provides. | ||
17 | These bits reside somewhere local to a project - perhaps | ||
18 | a directory into which the user checks in items (e.g. | ||
19 | a local directory containing a development source tree | ||
20 | used by the group). | ||
21 | </p> | ||
22 | <p> | ||
23 | The canonical method through which to include a local project | ||
24 | is to use the | ||
25 | <a class="link" href="../ref-manual/ref-classes-externalsrc.html" target="_self"><code class="filename">externalsrc</code></a> | ||
26 | class to include that local project. | ||
27 | You use either the <code class="filename">local.conf</code> or a | ||
28 | recipe's append file to override or set the | ||
29 | recipe to point to the local directory on your disk to pull | ||
30 | in the whole source tree. | ||
31 | </p> | ||
32 | <p> | ||
33 | For information on how to use the | ||
34 | <code class="filename">externalsrc</code> class, see the | ||
35 | "<a class="link" href="../ref-manual/ref-classes-externalsrc.html" target="_self"><code class="filename">externalsrc.bbclass</code></a>" | ||
36 | section. | ||
37 | </p> | ||
38 | </div></body> | ||
39 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/metadata-machine-configuration-and-policy-configuration.html b/documentation/getting-started/eclipse/html/getting-started/metadata-machine-configuration-and-policy-configuration.html new file mode 100644 index 0000000000..24f32f394f --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/metadata-machine-configuration-and-policy-configuration.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.2. Metadata, Machine Configuration, and Policy Configuration</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="user-configuration.html" title="2.8.1. User Configuration"> | ||
10 | <link rel="next" href="distro-layer.html" title="2.8.2.1. Distro Layer"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="metadata-machine-configuration-and-policy-configuration"></a>2.8.2. Metadata, Machine Configuration, and Policy Configuration</h3></div></div></div> | ||
15 | <p> | ||
16 | The previous section described the user configurations that | ||
17 | define BitBake's global behavior. | ||
18 | This section takes a closer look at the layers the build system | ||
19 | uses to further control the build. | ||
20 | These layers provide Metadata for the software, machine, and | ||
21 | policy. | ||
22 | </p> | ||
23 | <p> | ||
24 | In general, three types of layer input exist: | ||
25 | </p> | ||
26 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
27 | <li class="listitem"><p><span class="emphasis"><em>Policy Configuration:</em></span> | ||
28 | Distribution Layers provide top-level or general | ||
29 | policies for the image or SDK being built. | ||
30 | For example, this layer would dictate whether BitBake | ||
31 | produces RPM or IPK packages.</p></li> | ||
32 | <li class="listitem"><p><span class="emphasis"><em>Machine Configuration:</em></span> | ||
33 | Board Support Package (BSP) layers provide machine | ||
34 | configurations. | ||
35 | This type of information is specific to a particular | ||
36 | target architecture.</p></li> | ||
37 | <li class="listitem"><p><span class="emphasis"><em>Metadata:</em></span> | ||
38 | Software layers contain user-supplied recipe files, | ||
39 | patches, and append files. | ||
40 | </p></li> | ||
41 | </ul></div> | ||
42 | <p> | ||
43 | </p> | ||
44 | <p> | ||
45 | The following figure shows an expanded representation of the | ||
46 | Metadata, Machine Configuration, and Policy Configuration input | ||
47 | (layers) boxes of the | ||
48 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>: | ||
49 | </p> | ||
50 | <p> | ||
51 | </p> | ||
52 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 675px"><td align="center"><img src="figures/layer-input.png" align="middle" width="720"></td></tr></table> | ||
53 | <p> | ||
54 | </p> | ||
55 | <p> | ||
56 | In general, all layers have a similar structure. | ||
57 | They all contain a licensing file | ||
58 | (e.g. <code class="filename">COPYING</code>) if the layer is to be | ||
59 | distributed, a <code class="filename">README</code> file as good practice | ||
60 | and especially if the layer is to be distributed, a | ||
61 | configuration directory, and recipe directories. | ||
62 | </p> | ||
63 | <p> | ||
64 | The Yocto Project has many layers that can be used. | ||
65 | You can see a web-interface listing of them on the | ||
66 | <a class="ulink" href="http://git.yoctoproject.org/" target="_self">Source Repositories</a> | ||
67 | page. | ||
68 | The layers are shown at the bottom categorized under | ||
69 | "Yocto Metadata Layers." | ||
70 | These layers are fundamentally a subset of the | ||
71 | <a class="ulink" href="http://layers.openembedded.org/layerindex/layers/" target="_self">OpenEmbedded Metadata Index</a>, | ||
72 | which lists all layers provided by the OpenEmbedded community. | ||
73 | </p> | ||
74 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
75 | <h3 class="title">Note</h3> | ||
76 | Layers exist in the Yocto Project Source Repositories that | ||
77 | cannot be found in the OpenEmbedded Metadata Index. | ||
78 | These layers are either deprecated or experimental in nature. | ||
79 | </div> | ||
80 | <p> | ||
81 | </p> | ||
82 | <p> | ||
83 | BitBake uses the <code class="filename">conf/bblayers.conf</code> file, | ||
84 | which is part of the user configuration, to find what layers it | ||
85 | should be using as part of the build. | ||
86 | </p> | ||
87 | <p> | ||
88 | For more information on layers, see the | ||
89 | "<a class="link" href="../dev-manual/understanding-and-creating-layers.html" target="_self">Understanding and Creating Layers</a>" | ||
90 | section in the Yocto Project Development Tasks Manual. | ||
91 | </p> | ||
92 | </div></body> | ||
93 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/metadata-virtual-providers.html b/documentation/getting-started/eclipse/html/getting-started/metadata-virtual-providers.html new file mode 100644 index 0000000000..ebbae37990 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/metadata-virtual-providers.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1.3. Metadata (Virtual Providers)</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
9 | <link rel="prev" href="usingpoky-components-metadata.html" title="3.1.2. Metadata (Recipes)"> | ||
10 | <link rel="next" href="usingpoky-components-classes.html" title="3.1.4. Classes"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1.3. Metadata (Virtual Providers)"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="metadata-virtual-providers"></a>3.1.3. Metadata (Virtual Providers)</h3></div></div></div> | ||
15 | <p> | ||
16 | Prior to the build, if you know that several different recipes | ||
17 | provide the same functionality, you can use a virtual provider | ||
18 | (i.e. <code class="filename">virtual/*</code>) as a placeholder for the | ||
19 | actual provider. | ||
20 | The actual provider would be determined at build time. | ||
21 | In this case, you should add <code class="filename">virtual/*</code> | ||
22 | to | ||
23 | <a class="link" href="../ref-manual/var-DEPENDS.html" target="_self"><code class="filename">DEPENDS</code></a>, | ||
24 | rather than listing the specified provider. | ||
25 | You would select the actual provider by setting the | ||
26 | <a class="link" href="../ref-manual/var-PREFERRED_PROVIDER.html" target="_self"><code class="filename">PREFERRED_PROVIDER</code></a> | ||
27 | variable (i.e. | ||
28 | <code class="filename">PREFERRED_PROVIDER_virtual/*</code>) | ||
29 | in the build's configuration file (e.g. | ||
30 | <code class="filename">poky/build/conf/local.conf</code>). | ||
31 | </p> | ||
32 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
33 | <h3 class="title">Note</h3> | ||
34 | Any recipe that PROVIDES a <code class="filename">virtual/*</code> | ||
35 | item that is ultimately not selected through | ||
36 | <code class="filename">PREFERRED_PROVIDER</code> does not get built. | ||
37 | Preventing these recipes from building is usually the | ||
38 | desired behavior since this mechanism's purpose is to | ||
39 | select between mutually exclusive alternative providers. | ||
40 | </div> | ||
41 | <p> | ||
42 | </p> | ||
43 | <p> | ||
44 | The following lists specific examples of virtual providers: | ||
45 | </p> | ||
46 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
47 | <li class="listitem"><p> | ||
48 | <code class="filename">virtual/mesa</code>: | ||
49 | Provides <code class="filename">gbm.pc</code>. | ||
50 | </p></li> | ||
51 | <li class="listitem"><p> | ||
52 | <code class="filename">virtual/egl</code>: | ||
53 | Provides <code class="filename">egl.pc</code> and possibly | ||
54 | <code class="filename">wayland-egl.pc</code>. | ||
55 | </p></li> | ||
56 | <li class="listitem"><p> | ||
57 | <code class="filename">virtual/libgl</code>: | ||
58 | Provides <code class="filename">gl.pc</code> (i.e. libGL). | ||
59 | </p></li> | ||
60 | <li class="listitem"><p> | ||
61 | <code class="filename">virtual/libgles1</code>: | ||
62 | Provides <code class="filename">glesv1_cm.pc</code> | ||
63 | (i.e. libGLESv1_CM). | ||
64 | </p></li> | ||
65 | <li class="listitem"><p> | ||
66 | <code class="filename">virtual/libgles2</code>: | ||
67 | Provides <code class="filename">glesv2.pc</code> | ||
68 | (i.e. libGLESv2). | ||
69 | </p></li> | ||
70 | </ul></div> | ||
71 | <p> | ||
72 | </p> | ||
73 | </div></body> | ||
74 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/open-source-philosophy.html b/documentation/getting-started/eclipse/html/getting-started/open-source-philosophy.html new file mode 100644 index 0000000000..bd9467e001 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/open-source-philosophy.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.2. Open Source Philosophy</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="yp-intro.html" title="2.1. Introduction"> | ||
10 | <link rel="next" href="workflows.html" title="2.3. Workflows"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.2. Open Source Philosophy"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="open-source-philosophy"></a>2.2. Open Source Philosophy</h2></div></div></div> | ||
15 | <p> | ||
16 | Open source philosophy is characterized by software development | ||
17 | directed by peer production and collaboration through an active | ||
18 | community of developers. | ||
19 | Contrast this to the more standard centralized development models | ||
20 | used by commercial software companies where a finite set of developers | ||
21 | produces a product for sale using a defined set of procedures that | ||
22 | ultimately result in an end product whose architecture and source | ||
23 | material are closed to the public. | ||
24 | </p> | ||
25 | <p> | ||
26 | Open source projects conceptually have differing concurrent agendas, | ||
27 | approaches, and production. | ||
28 | These facets of the development process can come from anyone in the | ||
29 | public (community) that has a stake in the software project. | ||
30 | The open source environment contains new copyright, licensing, domain, | ||
31 | and consumer issues that differ from the more traditional development | ||
32 | environment. | ||
33 | In an open source environment, the end product, source material, | ||
34 | and documentation are all available to the public at no cost. | ||
35 | </p> | ||
36 | <p> | ||
37 | A benchmark example of an open source project is the Linux kernel, | ||
38 | which was initially conceived and created by Finnish computer science | ||
39 | student Linus Torvalds in 1991. | ||
40 | Conversely, a good example of a non-open source project is the | ||
41 | <span class="trademark">Windows</span>® family of operating | ||
42 | systems developed by | ||
43 | <span class="trademark">Microsoft</span>® Corporation. | ||
44 | </p> | ||
45 | <p> | ||
46 | Wikipedia has a good historical description of the Open Source | ||
47 | Philosophy | ||
48 | <a class="ulink" href="http://en.wikipedia.org/wiki/Open_source" target="_self">here</a>. | ||
49 | You can also find helpful information on how to participate in the | ||
50 | Linux Community | ||
51 | <a class="ulink" href="http://ldn.linuxfoundation.org/book/how-participate-linux-community" target="_self">here</a>. | ||
52 | </p> | ||
53 | </div></body> | ||
54 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/other-variables-related-to-commercial-licenses.html b/documentation/getting-started/eclipse/html/getting-started/other-variables-related-to-commercial-licenses.html new file mode 100644 index 0000000000..73d152bb40 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/other-variables-related-to-commercial-licenses.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7.2.2. Other Variables Related to Commercial Licenses</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="enabling-commercially-licensed-recipes.html" title="3.7.2. Enabling Commercially Licensed Recipes"> | ||
9 | <link rel="prev" href="license-flag-matching.html" title="3.7.2.1. License Flag Matching"> | ||
10 | <link rel="next" href="x32.html" title="3.8. x32 psABI"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7.2.2. Other Variables Related to Commercial Licenses"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="other-variables-related-to-commercial-licenses"></a>3.7.2.2. Other Variables Related to Commercial Licenses</h4></div></div></div> | ||
15 | <p> | ||
16 | Other helpful variables related to commercial | ||
17 | license handling exist and are defined in the | ||
18 | <code class="filename">poky/meta/conf/distro/include/default-distrovars.inc</code> file: | ||
19 | </p> | ||
20 | <pre class="literallayout"> | ||
21 | COMMERCIAL_AUDIO_PLUGINS ?= "" | ||
22 | COMMERCIAL_VIDEO_PLUGINS ?= "" | ||
23 | </pre> | ||
24 | <p> | ||
25 | If you want to enable these components, you can do so by | ||
26 | making sure you have statements similar to the following | ||
27 | in your <code class="filename">local.conf</code> configuration file: | ||
28 | </p> | ||
29 | <pre class="literallayout"> | ||
30 | COMMERCIAL_AUDIO_PLUGINS = "gst-plugins-ugly-mad \ | ||
31 | gst-plugins-ugly-mpegaudioparse" | ||
32 | COMMERCIAL_VIDEO_PLUGINS = "gst-plugins-ugly-mpeg2dec \ | ||
33 | gst-plugins-ugly-mpegstream gst-plugins-bad-mpegvideoparse" | ||
34 | LICENSE_FLAGS_WHITELIST = "commercial_gst-plugins-ugly commercial_gst-plugins-bad commercial_qmmp" | ||
35 | </pre> | ||
36 | <p> | ||
37 | Of course, you could also create a matching whitelist | ||
38 | for those components using the more general "commercial" | ||
39 | in the whitelist, but that would also enable all the | ||
40 | other packages with | ||
41 | <a class="link" href="../ref-manual/var-LICENSE_FLAGS.html" target="_self"><code class="filename">LICENSE_FLAGS</code></a> | ||
42 | containing "commercial", which you may or may not want: | ||
43 | </p> | ||
44 | <pre class="literallayout"> | ||
45 | LICENSE_FLAGS_WHITELIST = "commercial" | ||
46 | </pre> | ||
47 | <p> | ||
48 | </p> | ||
49 | <p> | ||
50 | Specifying audio and video plug-ins as part of the | ||
51 | <code class="filename">COMMERCIAL_AUDIO_PLUGINS</code> and | ||
52 | <code class="filename">COMMERCIAL_VIDEO_PLUGINS</code> statements | ||
53 | (along with the enabling | ||
54 | <code class="filename">LICENSE_FLAGS_WHITELIST</code>) includes the | ||
55 | plug-ins or components into built images, thus adding | ||
56 | support for media formats or components. | ||
57 | </p> | ||
58 | </div></body> | ||
59 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overall-architecture.html b/documentation/getting-started/eclipse/html/getting-started/overall-architecture.html new file mode 100644 index 0000000000..974b05792a --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overall-architecture.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3.1. Overall Architecture</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="shared-state-cache.html" title="3.3. Shared State Cache"> | ||
9 | <link rel="prev" href="shared-state-cache.html" title="3.3. Shared State Cache"> | ||
10 | <link rel="next" href="overview-checksums.html" title="3.3.2. Checksums (Signatures)"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3.1. Overall Architecture"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="overall-architecture"></a>3.3.1. Overall Architecture</h3></div></div></div> | ||
15 | <p> | ||
16 | When determining what parts of the system need to be built, | ||
17 | BitBake works on a per-task basis rather than a per-recipe | ||
18 | basis. | ||
19 | You might wonder why using a per-task basis is preferred over | ||
20 | a per-recipe basis. | ||
21 | To help explain, consider having the IPK packaging backend | ||
22 | enabled and then switching to DEB. | ||
23 | In this case, the | ||
24 | <a class="link" href="../ref-manual/ref-tasks-install.html" target="_self"><code class="filename">do_install</code></a> | ||
25 | and | ||
26 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a> | ||
27 | task outputs are still valid. | ||
28 | However, with a per-recipe approach, the build would not | ||
29 | include the <code class="filename">.deb</code> files. | ||
30 | Consequently, you would have to invalidate the whole build and | ||
31 | rerun it. | ||
32 | Rerunning everything is not the best solution. | ||
33 | Also, in this case, the core must be "taught" much about | ||
34 | specific tasks. | ||
35 | This methodology does not scale well and does not allow users | ||
36 | to easily add new tasks in layers or as external recipes | ||
37 | without touching the packaged-staging core. | ||
38 | </p> | ||
39 | </div></body> | ||
40 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-checksums.html b/documentation/getting-started/eclipse/html/getting-started/overview-checksums.html new file mode 100644 index 0000000000..09ad110f71 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-checksums.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3.2. Checksums (Signatures)</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="shared-state-cache.html" title="3.3. Shared State Cache"> | ||
9 | <link rel="prev" href="overall-architecture.html" title="3.3.1. Overall Architecture"> | ||
10 | <link rel="next" href="shared-state.html" title="3.3.3. Shared State"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3.2. Checksums (Signatures)"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="overview-checksums"></a>3.3.2. Checksums (Signatures)</h3></div></div></div> | ||
15 | <p> | ||
16 | The shared state code uses a checksum, which is a unique | ||
17 | signature of a task's inputs, to determine if a task needs to | ||
18 | be run again. | ||
19 | Because it is a change in a task's inputs that triggers a | ||
20 | rerun, the process needs to detect all the inputs to a given | ||
21 | task. | ||
22 | For shell tasks, this turns out to be fairly easy because | ||
23 | the build process generates a "run" shell script for each task | ||
24 | and it is possible to create a checksum that gives you a good | ||
25 | idea of when the task's data changes. | ||
26 | </p> | ||
27 | <p> | ||
28 | To complicate the problem, there are things that should not be | ||
29 | included in the checksum. | ||
30 | First, there is the actual specific build path of a given | ||
31 | task - the | ||
32 | <a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a>. | ||
33 | It does not matter if the work directory changes because it | ||
34 | should not affect the output for target packages. | ||
35 | Also, the build process has the objective of making native | ||
36 | or cross packages relocatable. | ||
37 | </p> | ||
38 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
39 | <h3 class="title">Note</h3> | ||
40 | Both native and cross packages run on the build host. | ||
41 | However, cross packages generate output for the target | ||
42 | architecture. | ||
43 | </div> | ||
44 | <p> | ||
45 | The checksum therefore needs to exclude | ||
46 | <code class="filename">WORKDIR</code>. | ||
47 | The simplistic approach for excluding the work directory is to | ||
48 | set <code class="filename">WORKDIR</code> to some fixed value and | ||
49 | create the checksum for the "run" script. | ||
50 | </p> | ||
51 | <p> | ||
52 | Another problem results from the "run" scripts containing | ||
53 | functions that might or might not get called. | ||
54 | The incremental build solution contains code that figures out | ||
55 | dependencies between shell functions. | ||
56 | This code is used to prune the "run" scripts down to the | ||
57 | minimum set, thereby alleviating this problem and making the | ||
58 | "run" scripts much more readable as a bonus. | ||
59 | </p> | ||
60 | <p> | ||
61 | So far we have solutions for shell scripts. | ||
62 | What about Python tasks? | ||
63 | The same approach applies even though these tasks are more | ||
64 | difficult. | ||
65 | The process needs to figure out what variables a Python | ||
66 | function accesses and what functions it calls. | ||
67 | Again, the incremental build solution contains code that first | ||
68 | figures out the variable and function dependencies, and then | ||
69 | creates a checksum for the data used as the input to the task. | ||
70 | </p> | ||
71 | <p> | ||
72 | Like the <code class="filename">WORKDIR</code> case, situations exist | ||
73 | where dependencies should be ignored. | ||
74 | For these cases, you can instruct the build process to | ||
75 | ignore a dependency by using a line like the following: | ||
76 | </p> | ||
77 | <pre class="literallayout"> | ||
78 | PACKAGE_ARCHS[vardepsexclude] = "MACHINE" | ||
79 | </pre> | ||
80 | <p> | ||
81 | This example ensures that the | ||
82 | <a class="link" href="../ref-manual/var-PACKAGE_ARCHS.html" target="_self"><code class="filename">PACKAGE_ARCHS</code></a> | ||
83 | variable does not depend on the value of | ||
84 | <a class="link" href="../ref-manual/var-MACHINE.html" target="_self"><code class="filename">MACHINE</code></a>, | ||
85 | even if it does reference it. | ||
86 | </p> | ||
87 | <p> | ||
88 | Equally, there are cases where we need to add dependencies | ||
89 | BitBake is not able to find. | ||
90 | You can accomplish this by using a line like the following: | ||
91 | </p> | ||
92 | <pre class="literallayout"> | ||
93 | PACKAGE_ARCHS[vardeps] = "MACHINE" | ||
94 | </pre> | ||
95 | <p> | ||
96 | This example explicitly adds the <code class="filename">MACHINE</code> | ||
97 | variable as a dependency for | ||
98 | <code class="filename">PACKAGE_ARCHS</code>. | ||
99 | </p> | ||
100 | <p> | ||
101 | Consider a case with in-line Python, for example, where | ||
102 | BitBake is not able to figure out dependencies. | ||
103 | When running in debug mode (i.e. using | ||
104 | <code class="filename">-DDD</code>), BitBake produces output when it | ||
105 | discovers something for which it cannot figure out dependencies. | ||
106 | The Yocto Project team has currently not managed to cover | ||
107 | those dependencies in detail and is aware of the need to fix | ||
108 | this situation. | ||
109 | </p> | ||
110 | <p> | ||
111 | Thus far, this section has limited discussion to the direct | ||
112 | inputs into a task. | ||
113 | Information based on direct inputs is referred to as the | ||
114 | "basehash" in the code. | ||
115 | However, there is still the question of a task's indirect | ||
116 | inputs - the things that were already built and present in the | ||
117 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a>. | ||
118 | The checksum (or signature) for a particular task needs to add | ||
119 | the hashes of all the tasks on which the particular task | ||
120 | depends. | ||
121 | Choosing which dependencies to add is a policy decision. | ||
122 | However, the effect is to generate a master checksum that | ||
123 | combines the basehash and the hashes of the task's | ||
124 | dependencies. | ||
125 | </p> | ||
126 | <p> | ||
127 | At the code level, there are a variety of ways both the | ||
128 | basehash and the dependent task hashes can be influenced. | ||
129 | Within the BitBake configuration file, we can give BitBake | ||
130 | some extra information to help it construct the basehash. | ||
131 | The following statement effectively results in a list of | ||
132 | global variable dependency excludes - variables never | ||
133 | included in any checksum: | ||
134 | </p> | ||
135 | <pre class="literallayout"> | ||
136 | BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR \ | ||
137 | SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM \ | ||
138 | USER FILESPATH STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE PRSERV_HOST \ | ||
139 | PRSERV_DUMPDIR PRSERV_DUMPFILE PRSERV_LOCKDOWN PARALLEL_MAKE \ | ||
140 | CCACHE_DIR EXTERNAL_TOOLCHAIN CCACHE CCACHE_DISABLE LICENSE_PATH SDKPKGSUFFIX" | ||
141 | </pre> | ||
142 | <p> | ||
143 | The previous example excludes | ||
144 | <a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a> | ||
145 | since that variable is actually constructed as a path within | ||
146 | <a class="link" href="../ref-manual/var-TMPDIR.html" target="_self"><code class="filename">TMPDIR</code></a>, | ||
147 | which is on the whitelist. | ||
148 | </p> | ||
149 | <p> | ||
150 | The rules for deciding which hashes of dependent tasks to | ||
151 | include through dependency chains are more complex and are | ||
152 | generally accomplished with a Python function. | ||
153 | The code in <code class="filename">meta/lib/oe/sstatesig.py</code> shows | ||
154 | two examples of this and also illustrates how you can insert | ||
155 | your own policy into the system if so desired. | ||
156 | This file defines the two basic signature generators | ||
157 | <a class="link" href="../ref-manual/oe-core.html" target="_self">OE-Core</a> | ||
158 | uses: "OEBasic" and "OEBasicHash". | ||
159 | By default, there is a dummy "noop" signature handler enabled | ||
160 | in BitBake. | ||
161 | This means that behavior is unchanged from previous versions. | ||
162 | OE-Core uses the "OEBasicHash" signature handler by default | ||
163 | through this setting in the <code class="filename">bitbake.conf</code> | ||
164 | file: | ||
165 | </p> | ||
166 | <pre class="literallayout"> | ||
167 | BB_SIGNATURE_HANDLER ?= "OEBasicHash" | ||
168 | </pre> | ||
169 | <p> | ||
170 | The "OEBasicHash" <code class="filename">BB_SIGNATURE_HANDLER</code> | ||
171 | is the same as the "OEBasic" version but adds the task hash to | ||
172 | the stamp files. | ||
173 | This results in any | ||
174 | <a class="link" href="../ref-manual/metadata.html" target="_self">Metadata</a> | ||
175 | change that changes the task hash, automatically | ||
176 | causing the task to be run again. | ||
177 | This removes the need to bump | ||
178 | <a class="link" href="../ref-manual/var-PR.html" target="_self"><code class="filename">PR</code></a> | ||
179 | values, and changes to Metadata automatically ripple across | ||
180 | the build. | ||
181 | </p> | ||
182 | <p> | ||
183 | It is also worth noting that the end result of these | ||
184 | signature generators is to make some dependency and hash | ||
185 | information available to the build. | ||
186 | This information includes: | ||
187 | </p> | ||
188 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
189 | <li class="listitem"><p> | ||
190 | <code class="filename">BB_BASEHASH_task-</code><em class="replaceable"><code>taskname</code></em>: | ||
191 | The base hashes for each task in the recipe. | ||
192 | </p></li> | ||
193 | <li class="listitem"><p> | ||
194 | <code class="filename">BB_BASEHASH_</code><em class="replaceable"><code>filename</code></em><code class="filename">:</code><em class="replaceable"><code>taskname</code></em>: | ||
195 | The base hashes for each dependent task. | ||
196 | </p></li> | ||
197 | <li class="listitem"><p> | ||
198 | <code class="filename">BBHASHDEPS_</code><em class="replaceable"><code>filename</code></em><code class="filename">:</code><em class="replaceable"><code>taskname</code></em>: | ||
199 | The task dependencies for each task. | ||
200 | </p></li> | ||
201 | <li class="listitem"><p> | ||
202 | <code class="filename">BB_TASKHASH</code>: | ||
203 | The hash of the currently running task. | ||
204 | </p></li> | ||
205 | </ul></div> | ||
206 | <p> | ||
207 | </p> | ||
208 | </div></body> | ||
209 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-concepts.html b/documentation/getting-started/eclipse/html/getting-started/overview-concepts.html new file mode 100644 index 0000000000..855d22e109 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-concepts.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>Chapter 3. Yocto Project Concepts</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="index.html" title="Getting Started With Yocto Project"> | ||
9 | <link rel="prev" href="sdk-dev-environment.html" title="2.8.7. Application Development SDK"> | ||
10 | <link rel="next" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="chapter" title="Chapter 3. Yocto Project Concepts"> | ||
13 | <div class="titlepage"><div><div><h2 class="title"> | ||
14 | <a name="overview-concepts"></a>Chapter 3. Yocto Project Concepts</h2></div></div></div> | ||
15 | <div class="toc"> | ||
16 | <p><b>Table of Contents</b></p> | ||
17 | <dl> | ||
18 | <dt><span class="section"><a href="yocto-project-components.html">3.1. Yocto Project Components</a></span></dt> | ||
19 | <dd><dl> | ||
20 | <dt><span class="section"><a href="usingpoky-components-bitbake.html">3.1.1. BitBake</a></span></dt> | ||
21 | <dt><span class="section"><a href="usingpoky-components-metadata.html">3.1.2. Metadata (Recipes)</a></span></dt> | ||
22 | <dt><span class="section"><a href="metadata-virtual-providers.html">3.1.3. Metadata (Virtual Providers)</a></span></dt> | ||
23 | <dt><span class="section"><a href="usingpoky-components-classes.html">3.1.4. Classes</a></span></dt> | ||
24 | <dt><span class="section"><a href="usingpoky-components-configuration.html">3.1.5. Configuration</a></span></dt> | ||
25 | </dl></dd> | ||
26 | <dt><span class="section"><a href="cross-development-toolchain-generation.html">3.2. Cross-Development Toolchain Generation</a></span></dt> | ||
27 | <dt><span class="section"><a href="shared-state-cache.html">3.3. Shared State Cache</a></span></dt> | ||
28 | <dd><dl> | ||
29 | <dt><span class="section"><a href="overall-architecture.html">3.3.1. Overall Architecture</a></span></dt> | ||
30 | <dt><span class="section"><a href="overview-checksums.html">3.3.2. Checksums (Signatures)</a></span></dt> | ||
31 | <dt><span class="section"><a href="shared-state.html">3.3.3. Shared State</a></span></dt> | ||
32 | <dt><span class="section"><a href="tips-and-tricks.html">3.3.4. Tips and Tricks</a></span></dt> | ||
33 | </dl></dd> | ||
34 | <dt><span class="section"><a href="automatically-added-runtime-dependencies.html">3.4. Automatically Added Runtime Dependencies</a></span></dt> | ||
35 | <dt><span class="section"><a href="fakeroot-and-pseudo.html">3.5. Fakeroot and Pseudo</a></span></dt> | ||
36 | <dt><span class="section"><a href="wayland.html">3.6. Wayland</a></span></dt> | ||
37 | <dd><dl> | ||
38 | <dt><span class="section"><a href="wayland-support.html">3.6.1. Support</a></span></dt> | ||
39 | <dt><span class="section"><a href="enabling-wayland-in-an-image.html">3.6.2. Enabling Wayland in an Image</a></span></dt> | ||
40 | <dt><span class="section"><a href="running-weston.html">3.6.3. Running Weston</a></span></dt> | ||
41 | </dl></dd> | ||
42 | <dt><span class="section"><a href="overview-licenses.html">3.7. Licenses</a></span></dt> | ||
43 | <dd><dl> | ||
44 | <dt><span class="section"><a href="usingpoky-configuring-LIC_FILES_CHKSUM.html">3.7.1. Tracking License Changes</a></span></dt> | ||
45 | <dt><span class="section"><a href="enabling-commercially-licensed-recipes.html">3.7.2. Enabling Commercially Licensed Recipes</a></span></dt> | ||
46 | </dl></dd> | ||
47 | <dt><span class="section"><a href="x32.html">3.8. x32 psABI</a></span></dt> | ||
48 | </dl> | ||
49 | </div> | ||
50 | <p> | ||
51 | This chapter describes concepts for various areas of the Yocto Project. | ||
52 | Currently, topics include Yocto Project components, cross-development | ||
53 | generation, shared state (sstate) cache, runtime dependencies, | ||
54 | Pseudo and Fakeroot, x32 psABI, Wayland support, and Licenses. | ||
55 | </p> | ||
56 | </div></body> | ||
57 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-debugging.html b/documentation/getting-started/eclipse/html/getting-started/overview-debugging.html new file mode 100644 index 0000000000..b8b4c880e7 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-debugging.html | |||
@@ -0,0 +1,28 @@ | |||
1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3.4.1. Debugging</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="tips-and-tricks.html" title="3.3.4. Tips and Tricks"> | ||
9 | <link rel="prev" href="tips-and-tricks.html" title="3.3.4. Tips and Tricks"> | ||
10 | <link rel="next" href="invalidating-shared-state.html" title="3.3.4.2. Invalidating Shared State"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3.4.1. Debugging"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="overview-debugging"></a>3.3.4.1. Debugging</h4></div></div></div> | ||
15 | <p> | ||
16 | Seeing what metadata went into creating the input signature | ||
17 | of a shared state (sstate) task can be a useful debugging | ||
18 | aid. | ||
19 | This information is available in signature information | ||
20 | (<code class="filename">siginfo</code>) files in | ||
21 | <a class="link" href="../ref-manual/var-SSTATE_DIR.html" target="_self"><code class="filename">SSTATE_DIR</code></a>. | ||
22 | For information on how to view and interpret information in | ||
23 | <code class="filename">siginfo</code> files, see the | ||
24 | "<a class="link" href="../dev-manual/dev-viewing-task-variable-dependencies.html" target="_self">Viewing Task Variable Dependencies</a>" | ||
25 | section in the Yocto Project Development Tasks Manual. | ||
26 | </p> | ||
27 | </div></body> | ||
28 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-development-environment.html b/documentation/getting-started/eclipse/html/getting-started/overview-development-environment.html new file mode 100644 index 0000000000..c8030fee19 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-development-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>Chapter 2. The Yocto Project Development Environment</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="index.html" title="Getting Started With Yocto Project"> | ||
9 | <link rel="prev" href="overview-other-information.html" title="1.2. Other Information"> | ||
10 | <link rel="next" href="yp-intro.html" title="2.1. Introduction"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="chapter" title="Chapter 2. The Yocto Project Development Environment"> | ||
13 | <div class="titlepage"><div><div><h2 class="title"> | ||
14 | <a name="overview-development-environment"></a>Chapter 2. The Yocto Project Development Environment</h2></div></div></div> | ||
15 | <div class="toc"> | ||
16 | <p><b>Table of Contents</b></p> | ||
17 | <dl> | ||
18 | <dt><span class="section"><a href="yp-intro.html">2.1. Introduction</a></span></dt> | ||
19 | <dt><span class="section"><a href="open-source-philosophy.html">2.2. Open Source Philosophy</a></span></dt> | ||
20 | <dt><span class="section"><a href="workflows.html">2.3. Workflows</a></span></dt> | ||
21 | <dt><span class="section"><a href="git.html">2.4. Git</a></span></dt> | ||
22 | <dd><dl> | ||
23 | <dt><span class="section"><a href="repositories-tags-and-branches.html">2.4.1. Repositories, Tags, and Branches</a></span></dt> | ||
24 | <dt><span class="section"><a href="basic-commands.html">2.4.2. Basic Commands</a></span></dt> | ||
25 | </dl></dd> | ||
26 | <dt><span class="section"><a href="yocto-project-repositories.html">2.5. Yocto Project Source Repositories</a></span></dt> | ||
27 | <dt><span class="section"><a href="licensing.html">2.6. Licensing</a></span></dt> | ||
28 | <dt><span class="section"><a href="recipe-syntax.html">2.7. Recipe Syntax</a></span></dt> | ||
29 | <dt><span class="section"><a href="development-concepts.html">2.8. Development Concepts</a></span></dt> | ||
30 | <dd><dl> | ||
31 | <dt><span class="section"><a href="user-configuration.html">2.8.1. User Configuration</a></span></dt> | ||
32 | <dt><span class="section"><a href="metadata-machine-configuration-and-policy-configuration.html">2.8.2. Metadata, Machine Configuration, and Policy Configuration</a></span></dt> | ||
33 | <dt><span class="section"><a href="sources-dev-environment.html">2.8.3. Sources</a></span></dt> | ||
34 | <dt><span class="section"><a href="package-feeds-dev-environment.html">2.8.4. Package Feeds</a></span></dt> | ||
35 | <dt><span class="section"><a href="bitbake-dev-environment.html">2.8.5. BitBake</a></span></dt> | ||
36 | <dt><span class="section"><a href="images-dev-environment.html">2.8.6. Images</a></span></dt> | ||
37 | <dt><span class="section"><a href="sdk-dev-environment.html">2.8.7. Application Development SDK</a></span></dt> | ||
38 | </dl></dd> | ||
39 | </dl> | ||
40 | </div> | ||
41 | <p> | ||
42 | This chapter takes a look at the Yocto Project development | ||
43 | environment and also provides a detailed look at what goes on during | ||
44 | development in that environment. | ||
45 | The chapter provides Yocto Project Development environment concepts that | ||
46 | help you understand how work is accomplished in an open source environment, | ||
47 | which is very different as compared to work accomplished in a closed, | ||
48 | proprietary environment. | ||
49 | </p> | ||
50 | <p> | ||
51 | Specifically, this chapter addresses open source philosophy, workflows, | ||
52 | Git, source repositories, licensing, recipe syntax, and development | ||
53 | syntax. | ||
54 | </p> | ||
55 | </div></body> | ||
56 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-licenses.html b/documentation/getting-started/eclipse/html/getting-started/overview-licenses.html new file mode 100644 index 0000000000..eca1f71d2d --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-licenses.html | |||
@@ -0,0 +1,29 @@ | |||
1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7. Licenses</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="running-weston.html" title="3.6.3. Running Weston"> | ||
10 | <link rel="next" href="usingpoky-configuring-LIC_FILES_CHKSUM.html" title="3.7.1. Tracking License Changes"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7. Licenses"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="overview-licenses"></a>3.7. Licenses</h2></div></div></div> | ||
15 | <p> | ||
16 | This section describes the mechanism by which the OpenEmbedded | ||
17 | build system tracks changes to licensing text. | ||
18 | The section also describes how to enable commercially licensed | ||
19 | recipes, which by default are disabled. | ||
20 | </p> | ||
21 | <p> | ||
22 | For information that can help you maintain compliance with | ||
23 | various open source licensing during the lifecycle of the product, | ||
24 | see the | ||
25 | "<a class="link" href="../dev-manual/maintaining-open-source-license-compliance-during-your-products-lifecycle.html" target="_self">Maintaining Open Source License Compliance During Your Project's Lifecycle</a>" | ||
26 | section in the Yocto Project Development Tasks Manual. | ||
27 | </p> | ||
28 | </div></body> | ||
29 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-manual-intro.html b/documentation/getting-started/eclipse/html/getting-started/overview-manual-intro.html new file mode 100644 index 0000000000..ab4e1f338f --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-manual-intro.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>Chapter 1. The Yocto Project Overview Manual</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="index.html" title="Getting Started With Yocto Project"> | ||
9 | <link rel="prev" href="index.html" title="Getting Started With Yocto Project"> | ||
10 | <link rel="next" href="overview-welcome.html" title="1.1. Welcome"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="chapter" title="Chapter 1. The Yocto Project Overview Manual"> | ||
13 | <div class="titlepage"><div><div><h2 class="title"> | ||
14 | <a name="overview-manual-intro"></a>Chapter 1. The Yocto Project Overview Manual</h2></div></div></div> | ||
15 | <div class="toc"> | ||
16 | <p><b>Table of Contents</b></p> | ||
17 | <dl> | ||
18 | <dt><span class="section"><a href="overview-welcome.html">1.1. Welcome</a></span></dt> | ||
19 | <dt><span class="section"><a href="overview-other-information.html">1.2. Other Information</a></span></dt> | ||
20 | </dl> | ||
21 | </div> | ||
22 | </div></body> | ||
23 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-other-information.html b/documentation/getting-started/eclipse/html/getting-started/overview-other-information.html new file mode 100644 index 0000000000..03210c6ebf --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-other-information.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>1.2. Other Information</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-manual-intro.html" title="Chapter 1. The Yocto Project Overview Manual"> | ||
9 | <link rel="prev" href="overview-welcome.html" title="1.1. Welcome"> | ||
10 | <link rel="next" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="1.2. Other Information"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="overview-other-information"></a>1.2. Other Information</h2></div></div></div> | ||
15 | <p> | ||
16 | Because this manual presents information for many different | ||
17 | topics, supplemental information is recommended for full | ||
18 | comprehension. | ||
19 | For additional introductory information on the Yocto Project, see | ||
20 | the <a class="ulink" href="http://www.yoctoproject.org" target="_self">Yocto Project Website</a>. | ||
21 | You can find an introductory to using the Yocto Project by working | ||
22 | through the | ||
23 | <a class="link" href="../yocto-project-qs/index.html" target="_self">Yocto Project Quick Start</a>. | ||
24 | </p> | ||
25 | <p> | ||
26 | For a comprehensive list of links and other documentation, see the | ||
27 | "<a class="link" href="../ref-manual/resources-links-and-related-documentation.html" target="_self">Links and Related Documentation</a>" | ||
28 | section in the Yocto Project Reference Manual. | ||
29 | </p> | ||
30 | </div></body> | ||
31 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/overview-welcome.html b/documentation/getting-started/eclipse/html/getting-started/overview-welcome.html new file mode 100644 index 0000000000..1bc34e081c --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/overview-welcome.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>1.1. Welcome</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-manual-intro.html" title="Chapter 1. The Yocto Project Overview Manual"> | ||
9 | <link rel="prev" href="overview-manual-intro.html" title="Chapter 1. The Yocto Project Overview Manual"> | ||
10 | <link rel="next" href="overview-other-information.html" title="1.2. Other Information"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="1.1. Welcome"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="overview-welcome"></a>1.1. Welcome</h2></div></div></div> | ||
15 | <p> | ||
16 | Welcome to the Yocto Project Overview Manual! | ||
17 | This manual introduces the Yocto Project by providing concepts, | ||
18 | software overviews, best-known-methods (BKMs), and any other | ||
19 | high-level introductory information suitable for a new Yocto | ||
20 | Project user. | ||
21 | </p> | ||
22 | <p> | ||
23 | The following list describes what you can get from this manual: | ||
24 | </p> | ||
25 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
26 | <li class="listitem"><p> | ||
27 | <span class="emphasis"><em>Major Topic:</em></span> | ||
28 | Provide a high-level description of this major topic. | ||
29 | </p></li> | ||
30 | <li class="listitem"><p> | ||
31 | <span class="emphasis"><em>Major Topic:</em></span> | ||
32 | Provide a high-level description of this major topic. | ||
33 | </p></li> | ||
34 | <li class="listitem"><p> | ||
35 | <span class="emphasis"><em>Major Topic:</em></span> | ||
36 | Provide a high-level description of this major topic. | ||
37 | </p></li> | ||
38 | <li class="listitem"><p> | ||
39 | <span class="emphasis"><em>Major Topic:</em></span> | ||
40 | Provide a high-level description of this major topic. | ||
41 | </p></li> | ||
42 | </ul></div> | ||
43 | <p> | ||
44 | </p> | ||
45 | <p> | ||
46 | This manual does not give you the following: | ||
47 | </p> | ||
48 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
49 | <li class="listitem"><p> | ||
50 | <span class="emphasis"><em>Step-by-step Instructions for Development Tasks:</em></span> | ||
51 | Instructional procedures reside in other manuals within | ||
52 | the Yocto Project documentation set. | ||
53 | For example, the | ||
54 | <a class="link" href="../dev-manual/index.html" target="_self">Yocto Project Development Tasks Manual</a> | ||
55 | provides examples on how to perform various development | ||
56 | tasks. | ||
57 | As another example, the | ||
58 | <a class="link" href="../sdk-manual/index.html" target="_self">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)</a> | ||
59 | manual contains detailed instructions on how to install an | ||
60 | SDK, which is used to develop applications for target | ||
61 | hardware. | ||
62 | </p></li> | ||
63 | <li class="listitem"><p> | ||
64 | <span class="emphasis"><em>Reference Material:</em></span> | ||
65 | This type of material resides in an appropriate reference | ||
66 | manual. | ||
67 | For example, system variables are documented in the | ||
68 | <a class="link" href="../ref-manual/index.html" target="_self">Yocto Project Reference Manual</a>. | ||
69 | As another example, the | ||
70 | <a class="link" href="../bsp-guide/index.html" target="_self">Yocto Project Board Support Package (BSP) Developer's Guide</a> | ||
71 | contains reference information on BSPs. | ||
72 | </p></li> | ||
73 | <li class="listitem"><p> | ||
74 | <span class="emphasis"><em>Detailed Public Information Not Specific to the | ||
75 | Yocto Project:</em></span> | ||
76 | For example, exhaustive information on how to use the | ||
77 | Source Control Manager Git is better covered with Internet | ||
78 | searches and official Git Documentation than through the | ||
79 | Yocto Project documentation. | ||
80 | </p></li> | ||
81 | </ul></div> | ||
82 | <p> | ||
83 | </p> | ||
84 | </div></body> | ||
85 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/package-feeds-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/package-feeds-dev-environment.html new file mode 100644 index 0000000000..ad3d67f660 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/package-feeds-dev-environment.html | |||
@@ -0,0 +1,98 @@ | |||
1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.4. Package Feeds</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="source-mirrors.html" title="2.8.3.4. Source Mirror(s)"> | ||
10 | <link rel="next" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.4. Package Feeds"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="package-feeds-dev-environment"></a>2.8.4. Package Feeds</h3></div></div></div> | ||
15 | <p> | ||
16 | When the OpenEmbedded build system generates an image or an SDK, | ||
17 | it gets the packages from a package feed area located in the | ||
18 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a>. | ||
19 | The | ||
20 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a> | ||
21 | shows this package feeds area in the upper-right corner. | ||
22 | </p> | ||
23 | <p> | ||
24 | This section looks a little closer into the package feeds area used | ||
25 | by the build system. | ||
26 | Here is a more detailed look at the area: | ||
27 | </p> | ||
28 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 540px"><td align="center"><img src="figures/package-feeds.png" align="middle" width="630"></td></tr></table> | ||
29 | <p> | ||
30 | </p> | ||
31 | <p> | ||
32 | Package feeds are an intermediary step in the build process. | ||
33 | The OpenEmbedded build system provides classes to generate | ||
34 | different package types, and you specify which classes to enable | ||
35 | through the | ||
36 | <a class="link" href="../ref-manual/var-PACKAGE_CLASSES.html" target="_self"><code class="filename">PACKAGE_CLASSES</code></a> | ||
37 | variable. | ||
38 | Before placing the packages into package feeds, | ||
39 | the build process validates them with generated output quality | ||
40 | assurance checks through the | ||
41 | <a class="link" href="../ref-manual/ref-classes-insane.html" target="_self"><code class="filename">insane</code></a> | ||
42 | class. | ||
43 | </p> | ||
44 | <p> | ||
45 | The package feed area resides in the Build Directory. | ||
46 | The directory the build system uses to temporarily store packages | ||
47 | is determined by a combination of variables and the particular | ||
48 | package manager in use. | ||
49 | See the "Package Feeds" box in the illustration and note the | ||
50 | information to the right of that area. | ||
51 | In particular, the following defines where package files are | ||
52 | kept: | ||
53 | </p> | ||
54 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
55 | <li class="listitem"><p><a class="link" href="../ref-manual/var-DEPLOY_DIR.html" target="_self"><code class="filename">DEPLOY_DIR</code></a>: | ||
56 | Defined as <code class="filename">tmp/deploy</code> in the Build | ||
57 | Directory. | ||
58 | </p></li> | ||
59 | <li class="listitem"><p><code class="filename">DEPLOY_DIR_*</code>: | ||
60 | Depending on the package manager used, the package type | ||
61 | sub-folder. | ||
62 | Given RPM, IPK, or DEB packaging and tarball creation, the | ||
63 | <a class="link" href="../ref-manual/var-DEPLOY_DIR_RPM.html" target="_self"><code class="filename">DEPLOY_DIR_RPM</code></a>, | ||
64 | <a class="link" href="../ref-manual/var-DEPLOY_DIR_IPK.html" target="_self"><code class="filename">DEPLOY_DIR_IPK</code></a>, | ||
65 | <a class="link" href="../ref-manual/var-DEPLOY_DIR_DEB.html" target="_self"><code class="filename">DEPLOY_DIR_DEB</code></a>, | ||
66 | or | ||
67 | <a class="link" href="../ref-manual/var-DEPLOY_DIR_TAR.html" target="_self"><code class="filename">DEPLOY_DIR_TAR</code></a>, | ||
68 | variables are used, respectively. | ||
69 | </p></li> | ||
70 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PACKAGE_ARCH.html" target="_self"><code class="filename">PACKAGE_ARCH</code></a>: | ||
71 | Defines architecture-specific sub-folders. | ||
72 | For example, packages could exist for the i586 or qemux86 | ||
73 | architectures. | ||
74 | </p></li> | ||
75 | </ul></div> | ||
76 | <p> | ||
77 | </p> | ||
78 | <p> | ||
79 | BitBake uses the <code class="filename">do_package_write_*</code> tasks to | ||
80 | generate packages and place them into the package holding area (e.g. | ||
81 | <code class="filename">do_package_write_ipk</code> for IPK packages). | ||
82 | See the | ||
83 | "<a class="link" href="../ref-manual/ref-tasks-package_write_deb.html" target="_self"><code class="filename">do_package_write_deb</code></a>", | ||
84 | "<a class="link" href="../ref-manual/ref-tasks-package_write_ipk.html" target="_self"><code class="filename">do_package_write_ipk</code></a>", | ||
85 | "<a class="link" href="../ref-manual/ref-tasks-package_write_rpm.html" target="_self"><code class="filename">do_package_write_rpm</code></a>", | ||
86 | and | ||
87 | "<a class="link" href="../ref-manual/ref-tasks-package_write_tar.html" target="_self"><code class="filename">do_package_write_tar</code></a>" | ||
88 | sections for additional information. | ||
89 | As an example, consider a scenario where an IPK packaging manager | ||
90 | is being used and package architecture support for both i586 | ||
91 | and qemux86 exist. | ||
92 | Packages for the i586 architecture are placed in | ||
93 | <code class="filename">build/tmp/deploy/ipk/i586</code>, while packages for | ||
94 | the qemux86 architecture are placed in | ||
95 | <code class="filename">build/tmp/deploy/ipk/qemux86</code>. | ||
96 | </p> | ||
97 | </div></body> | ||
98 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/package-splitting-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/package-splitting-dev-environment.html new file mode 100644 index 0000000000..882d66c31c --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/package-splitting-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.4. Package Splitting</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="configuration-and-compilation-dev-environment.html" title="2.8.5.3. Configuration and Compilation"> | ||
10 | <link rel="next" href="image-generation-dev-environment.html" title="2.8.5.5. Image Generation"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.4. Package Splitting"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="package-splitting-dev-environment"></a>2.8.5.4. Package Splitting</h4></div></div></div> | ||
15 | <p> | ||
16 | After source code is configured and compiled, the | ||
17 | OpenEmbedded build system analyzes | ||
18 | the results and splits the output into packages: | ||
19 | </p> | ||
20 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 630px"><td align="center"><img src="figures/analysis-for-package-splitting.png" align="middle" width="630"></td></tr></table> | ||
21 | <p> | ||
22 | </p> | ||
23 | <p> | ||
24 | The | ||
25 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a> | ||
26 | and | ||
27 | <a class="link" href="../ref-manual/ref-tasks-packagedata.html" target="_self"><code class="filename">do_packagedata</code></a> | ||
28 | tasks combine to analyze | ||
29 | the files found in the | ||
30 | <a class="link" href="../ref-manual/var-D.html" target="_self"><code class="filename">D</code></a> directory | ||
31 | and split them into subsets based on available packages and | ||
32 | files. | ||
33 | The analyzing process involves the following as well as other | ||
34 | items: splitting out debugging symbols, | ||
35 | looking at shared library dependencies between packages, | ||
36 | and looking at package relationships. | ||
37 | The <code class="filename">do_packagedata</code> task creates package | ||
38 | metadata based on the analysis such that the | ||
39 | OpenEmbedded build system can generate the final packages. | ||
40 | Working, staged, and intermediate results of the analysis | ||
41 | and package splitting process use these areas: | ||
42 | </p> | ||
43 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
44 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PKGD.html" target="_self"><code class="filename">PKGD</code></a> - | ||
45 | The destination directory for packages before they are | ||
46 | split. | ||
47 | </p></li> | ||
48 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PKGDATA_DIR.html" target="_self"><code class="filename">PKGDATA_DIR</code></a> - | ||
49 | A shared, global-state directory that holds data | ||
50 | generated during the packaging process. | ||
51 | </p></li> | ||
52 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PKGDESTWORK.html" target="_self"><code class="filename">PKGDESTWORK</code></a> - | ||
53 | A temporary work area used by the | ||
54 | <code class="filename">do_package</code> task. | ||
55 | </p></li> | ||
56 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PKGDEST.html" target="_self"><code class="filename">PKGDEST</code></a> - | ||
57 | The parent directory for packages after they have | ||
58 | been split. | ||
59 | </p></li> | ||
60 | </ul></div> | ||
61 | <p> | ||
62 | The <a class="link" href="../ref-manual/var-FILES.html" target="_self"><code class="filename">FILES</code></a> | ||
63 | variable defines the files that go into each package in | ||
64 | <a class="link" href="../ref-manual/var-PACKAGES.html" target="_self"><code class="filename">PACKAGES</code></a>. | ||
65 | If you want details on how this is accomplished, you can | ||
66 | look at the | ||
67 | <a class="link" href="../ref-manual/ref-classes-package.html" target="_self"><code class="filename">package</code></a> | ||
68 | class. | ||
69 | </p> | ||
70 | <p> | ||
71 | Depending on the type of packages being created (RPM, DEB, or | ||
72 | IPK), the <code class="filename">do_package_write_*</code> task | ||
73 | creates the actual packages and places them in the | ||
74 | Package Feed area, which is | ||
75 | <code class="filename">${TMPDIR}/deploy</code>. | ||
76 | You can see the | ||
77 | "<a class="link" href="package-feeds-dev-environment.html" title="2.8.4. Package Feeds">Package Feeds</a>" | ||
78 | section for more detail on that part of the build process. | ||
79 | </p> | ||
80 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
81 | <h3 class="title">Note</h3> | ||
82 | Support for creating feeds directly from the | ||
83 | <code class="filename">deploy/*</code> directories does not exist. | ||
84 | Creating such feeds usually requires some kind of feed | ||
85 | maintenance mechanism that would upload the new packages | ||
86 | into an official package feed (e.g. the | ||
87 | Ångström distribution). | ||
88 | This functionality is highly distribution-specific | ||
89 | and thus is not provided out of the box. | ||
90 | </div> | ||
91 | <p> | ||
92 | </p> | ||
93 | </div></body> | ||
94 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/patching-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/patching-dev-environment.html new file mode 100644 index 0000000000..60ae6b020b --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/patching-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.2. Patching</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="source-fetching-dev-environment.html" title="2.8.5.1. Source Fetching"> | ||
10 | <link rel="next" href="configuration-and-compilation-dev-environment.html" title="2.8.5.3. Configuration and Compilation"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.2. Patching"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="patching-dev-environment"></a>2.8.5.2. Patching</h4></div></div></div> | ||
15 | <p> | ||
16 | Once source code is fetched and unpacked, BitBake locates | ||
17 | patch files and applies them to the source files: | ||
18 | </p> | ||
19 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 450px"><td align="center"><img src="figures/patching.png" align="middle" width="540"></td></tr></table> | ||
20 | <p> | ||
21 | </p> | ||
22 | <p> | ||
23 | The | ||
24 | <a class="link" href="../ref-manual/ref-tasks-patch.html" target="_self"><code class="filename">do_patch</code></a> | ||
25 | task processes recipes by | ||
26 | using the | ||
27 | <a class="link" href="../ref-manual/var-SRC_URI.html" target="_self"><code class="filename">SRC_URI</code></a> | ||
28 | variable to locate applicable patch files, which by default | ||
29 | are <code class="filename">*.patch</code> or | ||
30 | <code class="filename">*.diff</code> files, or any file if | ||
31 | "apply=yes" is specified for the file in | ||
32 | <code class="filename">SRC_URI</code>. | ||
33 | </p> | ||
34 | <p> | ||
35 | BitBake finds and applies multiple patches for a single recipe | ||
36 | in the order in which it finds the patches. | ||
37 | Patches are applied to the recipe's source files located in the | ||
38 | <a class="link" href="../ref-manual/var-S.html" target="_self"><code class="filename">S</code></a> | ||
39 | directory. | ||
40 | </p> | ||
41 | <p> | ||
42 | For more information on how the source directories are | ||
43 | created, see the | ||
44 | "<a class="link" href="source-fetching-dev-environment.html" title="2.8.5.1. Source Fetching">Source Fetching</a>" | ||
45 | section. | ||
46 | </p> | ||
47 | </div></body> | ||
48 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/recipe-syntax.html b/documentation/getting-started/eclipse/html/getting-started/recipe-syntax.html new file mode 100644 index 0000000000..fcf46d9d35 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/recipe-syntax.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.7. Recipe Syntax</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="licensing.html" title="2.6. Licensing"> | ||
10 | <link rel="next" href="development-concepts.html" title="2.8. Development Concepts"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.7. Recipe Syntax"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="recipe-syntax"></a>2.7. Recipe Syntax</h2></div></div></div> | ||
15 | <p> | ||
16 | Understanding recipe file syntax is important for | ||
17 | writing recipes. | ||
18 | The following list overviews the basic items that make up a | ||
19 | BitBake recipe file. | ||
20 | For more complete BitBake syntax descriptions, see the | ||
21 | "<a class="link" href="../bitbake-user-manual/bitbake-user-manual-metadata.html" target="_self">Syntax and Operators</a>" | ||
22 | chapter of the BitBake User Manual. | ||
23 | </p> | ||
24 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
25 | <li class="listitem"> | ||
26 | <p><span class="emphasis"><em>Variable Assignments and Manipulations:</em></span> | ||
27 | Variable assignments allow a value to be assigned to a | ||
28 | variable. | ||
29 | The assignment can be static text or might include | ||
30 | the contents of other variables. | ||
31 | In addition to the assignment, appending and prepending | ||
32 | operations are also supported.</p> | ||
33 | <p>The following example shows some of the ways | ||
34 | you can use variables in recipes: | ||
35 | </p> | ||
36 | <pre class="literallayout"> | ||
37 | S = "${WORKDIR}/postfix-${PV}" | ||
38 | CFLAGS += "-DNO_ASM" | ||
39 | SRC_URI_append = " file://fixup.patch" | ||
40 | </pre> | ||
41 | <p> | ||
42 | </p> | ||
43 | </li> | ||
44 | <li class="listitem"> | ||
45 | <p><span class="emphasis"><em>Functions:</em></span> | ||
46 | Functions provide a series of actions to be performed. | ||
47 | You usually use functions to override the default | ||
48 | implementation of a task function or to complement | ||
49 | a default function (i.e. append or prepend to an | ||
50 | existing function). | ||
51 | Standard functions use <code class="filename">sh</code> shell | ||
52 | syntax, although access to OpenEmbedded variables and | ||
53 | internal methods are also available.</p> | ||
54 | <p>The following is an example function from the | ||
55 | <code class="filename">sed</code> recipe: | ||
56 | </p> | ||
57 | <pre class="literallayout"> | ||
58 | do_install () { | ||
59 | autotools_do_install | ||
60 | install -d ${D}${base_bindir} | ||
61 | mv ${D}${bindir}/sed ${D}${base_bindir}/sed | ||
62 | rmdir ${D}${bindir}/ | ||
63 | } | ||
64 | </pre> | ||
65 | <p> | ||
66 | It is also possible to implement new functions that | ||
67 | are called between existing tasks as long as the | ||
68 | new functions are not replacing or complementing the | ||
69 | default functions. | ||
70 | You can implement functions in Python | ||
71 | instead of shell. | ||
72 | Both of these options are not seen in the majority of | ||
73 | recipes.</p> | ||
74 | </li> | ||
75 | <li class="listitem"> | ||
76 | <p><span class="emphasis"><em>Keywords:</em></span> | ||
77 | BitBake recipes use only a few keywords. | ||
78 | You use keywords to include common | ||
79 | functions (<code class="filename">inherit</code>), load parts | ||
80 | of a recipe from other files | ||
81 | (<code class="filename">include</code> and | ||
82 | <code class="filename">require</code>) and export variables | ||
83 | to the environment (<code class="filename">export</code>).</p> | ||
84 | <p>The following example shows the use of some of | ||
85 | these keywords: | ||
86 | </p> | ||
87 | <pre class="literallayout"> | ||
88 | export POSTCONF = "${STAGING_BINDIR}/postconf" | ||
89 | inherit autoconf | ||
90 | require otherfile.inc | ||
91 | </pre> | ||
92 | <p> | ||
93 | </p> | ||
94 | </li> | ||
95 | <li class="listitem"> | ||
96 | <p><span class="emphasis"><em>Comments:</em></span> | ||
97 | Any lines that begin with the hash character | ||
98 | (<code class="filename">#</code>) are treated as comment lines | ||
99 | and are ignored: | ||
100 | </p> | ||
101 | <pre class="literallayout"> | ||
102 | # This is a comment | ||
103 | </pre> | ||
104 | <p> | ||
105 | </p> | ||
106 | </li> | ||
107 | </ul></div> | ||
108 | <p> | ||
109 | </p> | ||
110 | <p> | ||
111 | This next list summarizes the most important and most commonly | ||
112 | used parts of the recipe syntax. | ||
113 | For more information on these parts of the syntax, you can | ||
114 | reference the | ||
115 | <a class="link" href="../bitbake-user-manual/bitbake-user-manual-metadata.html" target="_self">Syntax and Operators</a> | ||
116 | chapter in the BitBake User Manual. | ||
117 | </p> | ||
118 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
119 | <li class="listitem"> | ||
120 | <p><span class="emphasis"><em>Line Continuation: <code class="filename">\</code></em></span> - | ||
121 | Use the backward slash (<code class="filename">\</code>) | ||
122 | character to split a statement over multiple lines. | ||
123 | Place the slash character at the end of the line that | ||
124 | is to be continued on the next line: | ||
125 | </p> | ||
126 | <pre class="literallayout"> | ||
127 | VAR = "A really long \ | ||
128 | line" | ||
129 | </pre> | ||
130 | <p> | ||
131 | </p> | ||
132 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
133 | <h3 class="title">Note</h3> | ||
134 | You cannot have any characters including spaces | ||
135 | or tabs after the slash character. | ||
136 | </div> | ||
137 | <p> | ||
138 | </p> | ||
139 | </li> | ||
140 | <li class="listitem"> | ||
141 | <p> | ||
142 | <span class="emphasis"><em>Using Variables: <code class="filename">${...}</code></em></span> - | ||
143 | Use the <code class="filename">${<em class="replaceable"><code>VARNAME</code></em>}</code> syntax to | ||
144 | access the contents of a variable: | ||
145 | </p> | ||
146 | <pre class="literallayout"> | ||
147 | SRC_URI = "${SOURCEFORGE_MIRROR}/libpng/zlib-${PV}.tar.gz" | ||
148 | </pre> | ||
149 | <p> | ||
150 | </p> | ||
151 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
152 | <h3 class="title">Note</h3> | ||
153 | It is important to understand that the value of a | ||
154 | variable expressed in this form does not get | ||
155 | substituted automatically. | ||
156 | The expansion of these expressions happens | ||
157 | on-demand later (e.g. usually when a function that | ||
158 | makes reference to the variable executes). | ||
159 | This behavior ensures that the values are most | ||
160 | appropriate for the context in which they are | ||
161 | finally used. | ||
162 | On the rare occasion that you do need the variable | ||
163 | expression to be expanded immediately, you can use | ||
164 | the <code class="filename">:=</code> operator instead of | ||
165 | <code class="filename">=</code> when you make the | ||
166 | assignment, but this is not generally needed. | ||
167 | </div> | ||
168 | <p> | ||
169 | </p> | ||
170 | </li> | ||
171 | <li class="listitem"> | ||
172 | <p><span class="emphasis"><em>Quote All Assignments: <code class="filename">"<em class="replaceable"><code>value</code></em>"</code></em></span> - | ||
173 | Use double quotes around the value in all variable | ||
174 | assignments. | ||
175 | </p> | ||
176 | <pre class="literallayout"> | ||
177 | VAR1 = "${OTHERVAR}" | ||
178 | VAR2 = "The version is ${PV}" | ||
179 | </pre> | ||
180 | <p> | ||
181 | </p> | ||
182 | </li> | ||
183 | <li class="listitem"> | ||
184 | <p><span class="emphasis"><em>Conditional Assignment: <code class="filename">?=</code></em></span> - | ||
185 | Conditional assignment is used to assign a value to | ||
186 | a variable, but only when the variable is currently | ||
187 | unset. | ||
188 | Use the question mark followed by the equal sign | ||
189 | (<code class="filename">?=</code>) to make a "soft" assignment | ||
190 | used for conditional assignment. | ||
191 | Typically, "soft" assignments are used in the | ||
192 | <code class="filename">local.conf</code> file for variables | ||
193 | that are allowed to come through from the external | ||
194 | environment. | ||
195 | </p> | ||
196 | <p>Here is an example where | ||
197 | <code class="filename">VAR1</code> is set to "New value" if | ||
198 | it is currently empty. | ||
199 | However, if <code class="filename">VAR1</code> has already been | ||
200 | set, it remains unchanged: | ||
201 | </p> | ||
202 | <pre class="literallayout"> | ||
203 | VAR1 ?= "New value" | ||
204 | </pre> | ||
205 | <p> | ||
206 | In this next example, <code class="filename">VAR1</code> | ||
207 | is left with the value "Original value": | ||
208 | </p> | ||
209 | <pre class="literallayout"> | ||
210 | VAR1 = "Original value" | ||
211 | VAR1 ?= "New value" | ||
212 | </pre> | ||
213 | <p> | ||
214 | </p> | ||
215 | </li> | ||
216 | <li class="listitem"> | ||
217 | <p><span class="emphasis"><em>Appending: <code class="filename">+=</code></em></span> - | ||
218 | Use the plus character followed by the equals sign | ||
219 | (<code class="filename">+=</code>) to append values to existing | ||
220 | variables. | ||
221 | </p> | ||
222 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
223 | <h3 class="title">Note</h3> | ||
224 | This operator adds a space between the existing | ||
225 | content of the variable and the new content. | ||
226 | </div> | ||
227 | <p>Here is an example: | ||
228 | </p> | ||
229 | <pre class="literallayout"> | ||
230 | SRC_URI += "file://fix-makefile.patch" | ||
231 | </pre> | ||
232 | <p> | ||
233 | </p> | ||
234 | </li> | ||
235 | <li class="listitem"> | ||
236 | <p><span class="emphasis"><em>Prepending: <code class="filename">=+</code></em></span> - | ||
237 | Use the equals sign followed by the plus character | ||
238 | (<code class="filename">=+</code>) to prepend values to existing | ||
239 | variables. | ||
240 | </p> | ||
241 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
242 | <h3 class="title">Note</h3> | ||
243 | This operator adds a space between the new content | ||
244 | and the existing content of the variable. | ||
245 | </div> | ||
246 | <p>Here is an example: | ||
247 | </p> | ||
248 | <pre class="literallayout"> | ||
249 | VAR =+ "Starts" | ||
250 | </pre> | ||
251 | <p> | ||
252 | </p> | ||
253 | </li> | ||
254 | <li class="listitem"> | ||
255 | <p><span class="emphasis"><em>Appending: <code class="filename">_append</code></em></span> - | ||
256 | Use the <code class="filename">_append</code> operator to | ||
257 | append values to existing variables. | ||
258 | This operator does not add any additional space. | ||
259 | Also, the operator is applied after all the | ||
260 | <code class="filename">+=</code>, and | ||
261 | <code class="filename">=+</code> operators have been applied and | ||
262 | after all <code class="filename">=</code> assignments have | ||
263 | occurred. | ||
264 | </p> | ||
265 | <p>The following example shows the space being | ||
266 | explicitly added to the start to ensure the appended | ||
267 | value is not merged with the existing value: | ||
268 | </p> | ||
269 | <pre class="literallayout"> | ||
270 | SRC_URI_append = " file://fix-makefile.patch" | ||
271 | </pre> | ||
272 | <p> | ||
273 | You can also use the <code class="filename">_append</code> | ||
274 | operator with overrides, which results in the actions | ||
275 | only being performed for the specified target or | ||
276 | machine: | ||
277 | </p> | ||
278 | <pre class="literallayout"> | ||
279 | SRC_URI_append_sh4 = " file://fix-makefile.patch" | ||
280 | </pre> | ||
281 | <p> | ||
282 | </p> | ||
283 | </li> | ||
284 | <li class="listitem"> | ||
285 | <p><span class="emphasis"><em>Prepending: <code class="filename">_prepend</code></em></span> - | ||
286 | Use the <code class="filename">_prepend</code> operator to | ||
287 | prepend values to existing variables. | ||
288 | This operator does not add any additional space. | ||
289 | Also, the operator is applied after all the | ||
290 | <code class="filename">+=</code>, and | ||
291 | <code class="filename">=+</code> operators have been applied and | ||
292 | after all <code class="filename">=</code> assignments have | ||
293 | occurred. | ||
294 | </p> | ||
295 | <p>The following example shows the space being | ||
296 | explicitly added to the end to ensure the prepended | ||
297 | value is not merged with the existing value: | ||
298 | </p> | ||
299 | <pre class="literallayout"> | ||
300 | CFLAGS_prepend = "-I${S}/myincludes " | ||
301 | </pre> | ||
302 | <p> | ||
303 | You can also use the <code class="filename">_prepend</code> | ||
304 | operator with overrides, which results in the actions | ||
305 | only being performed for the specified target or | ||
306 | machine: | ||
307 | </p> | ||
308 | <pre class="literallayout"> | ||
309 | CFLAGS_prepend_sh4 = "-I${S}/myincludes " | ||
310 | </pre> | ||
311 | <p> | ||
312 | </p> | ||
313 | </li> | ||
314 | <li class="listitem"> | ||
315 | <p><span class="emphasis"><em>Overrides:</em></span> - | ||
316 | You can use overrides to set a value conditionally, | ||
317 | typically based on how the recipe is being built. | ||
318 | For example, to set the | ||
319 | <a class="link" href="../ref-manual/var-KBRANCH.html" target="_self"><code class="filename">KBRANCH</code></a> | ||
320 | variable's value to "standard/base" for any target | ||
321 | <a class="link" href="../ref-manual/var-MACHINE.html" target="_self"><code class="filename">MACHINE</code></a>, | ||
322 | except for qemuarm where it should be set to | ||
323 | "standard/arm-versatile-926ejs", you would do the | ||
324 | following: | ||
325 | </p> | ||
326 | <pre class="literallayout"> | ||
327 | KBRANCH = "standard/base" | ||
328 | KBRANCH_qemuarm = "standard/arm-versatile-926ejs" | ||
329 | </pre> | ||
330 | <p> | ||
331 | Overrides are also used to separate alternate values | ||
332 | of a variable in other situations. | ||
333 | For example, when setting variables such as | ||
334 | <a class="link" href="../ref-manual/var-FILES.html" target="_self"><code class="filename">FILES</code></a> | ||
335 | and | ||
336 | <a class="link" href="../ref-manual/var-RDEPENDS.html" target="_self"><code class="filename">RDEPENDS</code></a> | ||
337 | that are specific to individual packages produced by | ||
338 | a recipe, you should always use an override that | ||
339 | specifies the name of the package. | ||
340 | </p> | ||
341 | </li> | ||
342 | <li class="listitem"><p><span class="emphasis"><em>Indentation:</em></span> | ||
343 | Use spaces for indentation rather than than tabs. | ||
344 | For shell functions, both currently work. | ||
345 | However, it is a policy decision of the Yocto Project | ||
346 | to use tabs in shell functions. | ||
347 | Realize that some layers have a policy to use spaces | ||
348 | for all indentation. | ||
349 | </p></li> | ||
350 | <li class="listitem"> | ||
351 | <p><span class="emphasis"><em>Using Python for Complex Operations: <code class="filename">${@<em class="replaceable"><code>python_code</code></em>}</code></em></span> - | ||
352 | For more advanced processing, it is possible to use | ||
353 | Python code during variable assignments (e.g. | ||
354 | search and replacement on a variable).</p> | ||
355 | <p>You indicate Python code using the | ||
356 | <code class="filename">${@<em class="replaceable"><code>python_code</code></em>}</code> | ||
357 | syntax for the variable assignment: | ||
358 | </p> | ||
359 | <pre class="literallayout"> | ||
360 | SRC_URI = "ftp://ftp.info-zip.org/pub/infozip/src/zip${@d.getVar('PV',1).replace('.', '')}.tgz | ||
361 | </pre> | ||
362 | <p> | ||
363 | </p> | ||
364 | </li> | ||
365 | <li class="listitem"><p><span class="emphasis"><em>Shell Function Syntax:</em></span> | ||
366 | Write shell functions as if you were writing a shell | ||
367 | script when you describe a list of actions to take. | ||
368 | You should ensure that your script works with a generic | ||
369 | <code class="filename">sh</code> and that it does not require | ||
370 | any <code class="filename">bash</code> or other shell-specific | ||
371 | functionality. | ||
372 | The same considerations apply to various system | ||
373 | utilities (e.g. <code class="filename">sed</code>, | ||
374 | <code class="filename">grep</code>, <code class="filename">awk</code>, | ||
375 | and so forth) that you might wish to use. | ||
376 | If in doubt, you should check with multiple | ||
377 | implementations - including those from BusyBox. | ||
378 | </p></li> | ||
379 | </ul></div> | ||
380 | <p> | ||
381 | </p> | ||
382 | </div></body> | ||
383 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/repositories-tags-and-branches.html b/documentation/getting-started/eclipse/html/getting-started/repositories-tags-and-branches.html new file mode 100644 index 0000000000..d813948375 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/repositories-tags-and-branches.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.4.1. Repositories, Tags, and Branches</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="git.html" title="2.4. Git"> | ||
9 | <link rel="prev" href="git.html" title="2.4. Git"> | ||
10 | <link rel="next" href="basic-commands.html" title="2.4.2. Basic Commands"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.4.1. Repositories, Tags, and Branches"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="repositories-tags-and-branches"></a>2.4.1. Repositories, Tags, and Branches</h3></div></div></div> | ||
15 | <p> | ||
16 | As mentioned briefly in the previous section and also in the | ||
17 | "<a class="link" href="workflows.html" title="2.3. Workflows">Workflows</a>" section, | ||
18 | the Yocto Project maintains source repositories at | ||
19 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi" target="_self">http://git.yoctoproject.org/cgit.cgi</a>. | ||
20 | If you look at this web-interface of the repositories, each item | ||
21 | is a separate Git repository. | ||
22 | </p> | ||
23 | <p> | ||
24 | Git repositories use branching techniques that track content | ||
25 | change (not files) within a project (e.g. a new feature or updated | ||
26 | documentation). | ||
27 | Creating a tree-like structure based on project divergence allows | ||
28 | for excellent historical information over the life of a project. | ||
29 | This methodology also allows for an environment from which you can | ||
30 | do lots of local experimentation on projects as you develop | ||
31 | changes or new features. | ||
32 | </p> | ||
33 | <p> | ||
34 | A Git repository represents all development efforts for a given | ||
35 | project. | ||
36 | For example, the Git repository <code class="filename">poky</code> contains | ||
37 | all changes and developments for Poky over the course of its | ||
38 | entire life. | ||
39 | That means that all changes that make up all releases are captured. | ||
40 | The repository maintains a complete history of changes. | ||
41 | </p> | ||
42 | <p> | ||
43 | You can create a local copy of any repository by "cloning" it | ||
44 | with the <code class="filename">git clone</code> command. | ||
45 | When you clone a Git repository, you end up with an identical | ||
46 | copy of the repository on your development system. | ||
47 | Once you have a local copy of a repository, you can take steps to | ||
48 | develop locally. | ||
49 | For examples on how to clone Git repositories, see the | ||
50 | "<a class="link" href="../dev-manual/working-with-yocto-project-source-files.html" target="_self">Working With Yocto Project Source Files</a>" | ||
51 | section in the Yocto Project Development Tasks Manual. | ||
52 | </p> | ||
53 | <p> | ||
54 | It is important to understand that Git tracks content change and | ||
55 | not files. | ||
56 | Git uses "branches" to organize different development efforts. | ||
57 | For example, the <code class="filename">poky</code> repository has | ||
58 | several branches that include the current "sumo" | ||
59 | branch, the "master" branch, and many branches for past | ||
60 | Yocto Project releases. | ||
61 | You can see all the branches by going to | ||
62 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/" target="_self">http://git.yoctoproject.org/cgit.cgi/poky/</a> and | ||
63 | clicking on the | ||
64 | <code class="filename"><a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/refs/heads" target="_self">[...]</a></code> | ||
65 | link beneath the "Branch" heading. | ||
66 | </p> | ||
67 | <p> | ||
68 | Each of these branches represents a specific area of development. | ||
69 | The "master" branch represents the current or most recent | ||
70 | development. | ||
71 | All other branches represent offshoots of the "master" branch. | ||
72 | </p> | ||
73 | <p> | ||
74 | When you create a local copy of a Git repository, the copy has | ||
75 | the same set of branches as the original. | ||
76 | This means you can use Git to create a local working area | ||
77 | (also called a branch) that tracks a specific development branch | ||
78 | from the upstream source Git repository. | ||
79 | in other words, you can define your local Git environment to | ||
80 | work on any development branch in the repository. | ||
81 | To help illustrate, consider the following example Git commands: | ||
82 | </p> | ||
83 | <pre class="literallayout"> | ||
84 | $ cd ~ | ||
85 | $ git clone git://git.yoctoproject.org/poky | ||
86 | $ cd poky | ||
87 | $ git checkout -b sumo origin/sumo | ||
88 | </pre> | ||
89 | <p> | ||
90 | In the previous example after moving to the home directory, the | ||
91 | <code class="filename">git clone</code> command creates a | ||
92 | local copy of the upstream <code class="filename">poky</code> Git repository. | ||
93 | By default, Git checks out the "master" branch for your work. | ||
94 | After changing the working directory to the new local repository | ||
95 | (i.e. <code class="filename">poky</code>), the | ||
96 | <code class="filename">git checkout</code> command creates | ||
97 | and checks out a local branch named "sumo", which | ||
98 | tracks the upstream "origin/sumo" branch. | ||
99 | Changes you make while in this branch would ultimately affect | ||
100 | the upstream "sumo" branch of the | ||
101 | <code class="filename">poky</code> repository. | ||
102 | </p> | ||
103 | <p> | ||
104 | It is important to understand that when you create and checkout a | ||
105 | local working branch based on a branch name, | ||
106 | your local environment matches the "tip" of that particular | ||
107 | development branch at the time you created your local branch, | ||
108 | which could be different from the files in the "master" branch | ||
109 | of the upstream repository. | ||
110 | In other words, creating and checking out a local branch based on | ||
111 | the "sumo" branch name is not the same as | ||
112 | cloning and checking out the "master" branch if the repository. | ||
113 | Keep reading to see how you create a local snapshot of a Yocto | ||
114 | Project Release. | ||
115 | </p> | ||
116 | <p> | ||
117 | Git uses "tags" to mark specific changes in a repository. | ||
118 | Typically, a tag is used to mark a special point such as the final | ||
119 | change before a project is released. | ||
120 | You can see the tags used with the <code class="filename">poky</code> Git | ||
121 | repository by going to | ||
122 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/" target="_self">http://git.yoctoproject.org/cgit.cgi/poky/</a> and | ||
123 | clicking on the | ||
124 | <code class="filename"><a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/refs/tags" target="_self">[...]</a></code> | ||
125 | link beneath the "Tag" heading. | ||
126 | </p> | ||
127 | <p> | ||
128 | Some key tags for the <code class="filename">poky</code> are | ||
129 | <code class="filename">jethro-14.0.3</code>, | ||
130 | <code class="filename">morty-16.0.1</code>, | ||
131 | <code class="filename">pyro-17.0.0</code>, and | ||
132 | <code class="filename">sumo-20.0.0</code>. | ||
133 | These tags represent Yocto Project releases. | ||
134 | </p> | ||
135 | <p> | ||
136 | When you create a local copy of the Git repository, you also | ||
137 | have access to all the tags in the upstream repository. | ||
138 | Similar to branches, you can create and checkout a local working | ||
139 | Git branch based on a tag name. | ||
140 | When you do this, you get a snapshot of the Git repository that | ||
141 | reflects the state of the files when the change was made associated | ||
142 | with that tag. | ||
143 | The most common use is to checkout a working branch that matches | ||
144 | a specific Yocto Project release. | ||
145 | Here is an example: | ||
146 | </p> | ||
147 | <pre class="literallayout"> | ||
148 | $ cd ~ | ||
149 | $ git clone git://git.yoctoproject.org/poky | ||
150 | $ cd poky | ||
151 | $ git fetch --all --tags --prune | ||
152 | $ git checkout tags/pyro-17.0.0 -b my-pyro-17.0.0 | ||
153 | </pre> | ||
154 | <p> | ||
155 | In this example, the name of the top-level directory of your | ||
156 | local Yocto Project repository is <code class="filename">poky</code>. | ||
157 | After moving to the <code class="filename">poky</code> directory, the | ||
158 | <code class="filename">git fetch</code> command makes all the upstream | ||
159 | tags available locally in your repository. | ||
160 | Finally, the <code class="filename">git checkout</code> command | ||
161 | creates and checks out a branch named "my-pyro-17.0.0" that is | ||
162 | based on the specific change upstream in the repository | ||
163 | associated with the "pyro-17.0.0" tag. | ||
164 | The files in your repository now exactly match that particular | ||
165 | Yocto Project release as it is tagged in the upstream Git | ||
166 | repository. | ||
167 | It is important to understand that when you create and | ||
168 | checkout a local working branch based on a tag, your environment | ||
169 | matches a specific point in time and not the entire development | ||
170 | branch (i.e. the "tip" of the branch). | ||
171 | </p> | ||
172 | </div></body> | ||
173 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/running-weston.html b/documentation/getting-started/eclipse/html/getting-started/running-weston.html new file mode 100644 index 0000000000..b68f574134 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/running-weston.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.6.3. Running Weston</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="wayland.html" title="3.6. Wayland"> | ||
9 | <link rel="prev" href="enable-installation-in-an-image.html" title="3.6.2.2. Installing"> | ||
10 | <link rel="next" href="overview-licenses.html" title="3.7. Licenses"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.6.3. Running Weston"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="running-weston"></a>3.6.3. Running Weston</h3></div></div></div> | ||
15 | <p> | ||
16 | To run Weston inside X11, enabling it as described earlier and | ||
17 | building a Sato image is sufficient. | ||
18 | If you are running your image under Sato, a Weston Launcher | ||
19 | appears in the "Utility" category. | ||
20 | </p> | ||
21 | <p> | ||
22 | Alternatively, you can run Weston through the command-line | ||
23 | interpretor (CLI), which is better suited for development work. | ||
24 | To run Weston under the CLI, you need to do the following after | ||
25 | your image is built: | ||
26 | </p> | ||
27 | <div class="orderedlist"><ol class="orderedlist" type="1"> | ||
28 | <li class="listitem"> | ||
29 | <p> | ||
30 | Run these commands to export | ||
31 | <code class="filename">XDG_RUNTIME_DIR</code>: | ||
32 | </p> | ||
33 | <pre class="literallayout"> | ||
34 | mkdir -p /tmp/$USER-weston | ||
35 | chmod 0700 /tmp/$USER-weston | ||
36 | export XDG_RUNTIME_DIR=/tmp/$USER-weston | ||
37 | </pre> | ||
38 | <p> | ||
39 | </p> | ||
40 | </li> | ||
41 | <li class="listitem"> | ||
42 | <p> | ||
43 | Launch Weston in the shell: | ||
44 | </p> | ||
45 | <pre class="literallayout"> | ||
46 | weston | ||
47 | </pre> | ||
48 | </li> | ||
49 | </ol></div> | ||
50 | <p> | ||
51 | </p> | ||
52 | </div></body> | ||
53 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/scms.html b/documentation/getting-started/eclipse/html/getting-started/scms.html new file mode 100644 index 0000000000..f2ec54340c --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/scms.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.3.3. Source Control Managers (Optional)</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="sources-dev-environment.html" title="2.8.3. Sources"> | ||
9 | <link rel="prev" href="local-projects.html" title="2.8.3.2. Local Projects"> | ||
10 | <link rel="next" href="source-mirrors.html" title="2.8.3.4. Source Mirror(s)"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.3.3. Source Control Managers (Optional)"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="scms"></a>2.8.3.3. Source Control Managers (Optional)</h4></div></div></div> | ||
15 | <p> | ||
16 | Another place the build system can get source files from is | ||
17 | through an SCM such as Git or Subversion. | ||
18 | In this case, a repository is cloned or checked out. | ||
19 | The | ||
20 | <a class="link" href="../ref-manual/ref-tasks-fetch.html" target="_self"><code class="filename">do_fetch</code></a> | ||
21 | task inside BitBake uses | ||
22 | the <a class="link" href="../ref-manual/var-SRC_URI.html" target="_self"><code class="filename">SRC_URI</code></a> | ||
23 | variable and the argument's prefix to determine the correct | ||
24 | fetcher module. | ||
25 | </p> | ||
26 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
27 | <h3 class="title">Note</h3> | ||
28 | For information on how to have the OpenEmbedded build system | ||
29 | generate tarballs for Git repositories and place them in the | ||
30 | <a class="link" href="../ref-manual/var-DL_DIR.html" target="_self"><code class="filename">DL_DIR</code></a> | ||
31 | directory, see the | ||
32 | <a class="link" href="../ref-manual/var-BB_GENERATE_MIRROR_TARBALLS.html" target="_self"><code class="filename">BB_GENERATE_MIRROR_TARBALLS</code></a> | ||
33 | variable. | ||
34 | </div> | ||
35 | <p> | ||
36 | When fetching a repository, BitBake uses the | ||
37 | <a class="link" href="../ref-manual/var-SRCREV.html" target="_self"><code class="filename">SRCREV</code></a> | ||
38 | variable to determine the specific revision from which to | ||
39 | build. | ||
40 | </p> | ||
41 | </div></body> | ||
42 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/sdk-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/sdk-dev-environment.html new file mode 100644 index 0000000000..d2cd6a480e --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/sdk-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.7. Application Development SDK</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="images-dev-environment.html" title="2.8.6. Images"> | ||
10 | <link rel="next" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.7. Application Development SDK"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="sdk-dev-environment"></a>2.8.7. Application Development SDK</h3></div></div></div> | ||
15 | <p> | ||
16 | In the | ||
17 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>, | ||
18 | the output labeled "Application Development SDK" represents an | ||
19 | SDK. | ||
20 | The SDK generation process differs depending on whether you build | ||
21 | a standard SDK | ||
22 | (e.g. <code class="filename">bitbake -c populate_sdk</code> <em class="replaceable"><code>imagename</code></em>) | ||
23 | or an extensible SDK | ||
24 | (e.g. <code class="filename">bitbake -c populate_sdk_ext</code> <em class="replaceable"><code>imagename</code></em>). | ||
25 | This section is going to take a closer look at this output: | ||
26 | </p> | ||
27 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="810"><tr style="height: 653px"><td align="center"><img src="figures/sdk.png" align="middle" width="810"></td></tr></table> | ||
28 | <p> | ||
29 | </p> | ||
30 | <p> | ||
31 | The specific form of this output is a self-extracting | ||
32 | SDK installer (<code class="filename">*.sh</code>) that, when run, | ||
33 | installs the SDK, which consists of a cross-development | ||
34 | toolchain, a set of libraries and headers, and an SDK | ||
35 | environment setup script. | ||
36 | Running this installer essentially sets up your | ||
37 | cross-development environment. | ||
38 | You can think of the cross-toolchain as the "host" | ||
39 | part because it runs on the SDK machine. | ||
40 | You can think of the libraries and headers as the "target" | ||
41 | part because they are built for the target hardware. | ||
42 | The environment setup script is added so that you can initialize | ||
43 | the environment before using the tools. | ||
44 | </p> | ||
45 | <div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
46 | <h3 class="title">Notes</h3> | ||
47 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
48 | <li class="listitem"><p> | ||
49 | The Yocto Project supports several methods by which you can | ||
50 | set up this cross-development environment. | ||
51 | These methods include downloading pre-built SDK installers | ||
52 | or building and installing your own SDK installer. | ||
53 | </p></li> | ||
54 | <li class="listitem"><p> | ||
55 | For background information on cross-development toolchains | ||
56 | in the Yocto Project development environment, see the | ||
57 | "<a class="link" href="cross-development-toolchain-generation.html" title="3.2. Cross-Development Toolchain Generation">Cross-Development Toolchain Generation</a>" | ||
58 | section. | ||
59 | </p></li> | ||
60 | <li class="listitem"><p> | ||
61 | For information on setting up a cross-development | ||
62 | environment, see the | ||
63 | <a class="link" href="../sdk-manual/index.html" target="_self">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)</a> | ||
64 | manual. | ||
65 | </p></li> | ||
66 | </ul></div> | ||
67 | </div> | ||
68 | <p> | ||
69 | Once built, the SDK installers are written out to the | ||
70 | <code class="filename">deploy/sdk</code> folder inside the | ||
71 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a> | ||
72 | as shown in the figure at the beginning of this section. | ||
73 | Depending on the type of SDK, several variables exist that help | ||
74 | configure these files. | ||
75 | The following list shows the variables associated with a standard | ||
76 | SDK: | ||
77 | </p> | ||
78 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
79 | <li class="listitem"><p><a class="link" href="../ref-manual/var-DEPLOY_DIR.html" target="_self"><code class="filename">DEPLOY_DIR</code></a>: | ||
80 | Points to the <code class="filename">deploy</code> | ||
81 | directory.</p></li> | ||
82 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDKMACHINE.html" target="_self"><code class="filename">SDKMACHINE</code></a>: | ||
83 | Specifies the architecture of the machine | ||
84 | on which the cross-development tools are run to | ||
85 | create packages for the target hardware. | ||
86 | </p></li> | ||
87 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDKIMAGE_FEATURES.html" target="_self"><code class="filename">SDKIMAGE_FEATURES</code></a>: | ||
88 | Lists the features to include in the "target" part | ||
89 | of the SDK. | ||
90 | </p></li> | ||
91 | <li class="listitem"><p><a class="link" href="../ref-manual/var-TOOLCHAIN_HOST_TASK.html" target="_self"><code class="filename">TOOLCHAIN_HOST_TASK</code></a>: | ||
92 | Lists packages that make up the host | ||
93 | part of the SDK (i.e. the part that runs on | ||
94 | the <code class="filename">SDKMACHINE</code>). | ||
95 | When you use | ||
96 | <code class="filename">bitbake -c populate_sdk <em class="replaceable"><code>imagename</code></em></code> | ||
97 | to create the SDK, a set of default packages | ||
98 | apply. | ||
99 | This variable allows you to add more packages. | ||
100 | </p></li> | ||
101 | <li class="listitem"><p><a class="link" href="../ref-manual/var-TOOLCHAIN_TARGET_TASK.html" target="_self"><code class="filename">TOOLCHAIN_TARGET_TASK</code></a>: | ||
102 | Lists packages that make up the target part | ||
103 | of the SDK (i.e. the part built for the | ||
104 | target hardware). | ||
105 | </p></li> | ||
106 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDKPATH.html" target="_self"><code class="filename">SDKPATH</code></a>: | ||
107 | Defines the default SDK installation path offered by the | ||
108 | installation script. | ||
109 | </p></li> | ||
110 | </ul></div> | ||
111 | <p> | ||
112 | This next list, shows the variables associated with an extensible | ||
113 | SDK: | ||
114 | </p> | ||
115 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
116 | <li class="listitem"><p><a class="link" href="../ref-manual/var-DEPLOY_DIR.html" target="_self"><code class="filename">DEPLOY_DIR</code></a>: | ||
117 | Points to the <code class="filename">deploy</code> directory. | ||
118 | </p></li> | ||
119 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDK_EXT_TYPE.html" target="_self"><code class="filename">SDK_EXT_TYPE</code></a>: | ||
120 | Controls whether or not shared state artifacts are copied | ||
121 | into the extensible SDK. | ||
122 | By default, all required shared state artifacts are copied | ||
123 | into the SDK. | ||
124 | </p></li> | ||
125 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDK_INCLUDE_PKGDATA.html" target="_self"><code class="filename">SDK_INCLUDE_PKGDATA</code></a>: | ||
126 | Specifies whether or not packagedata will be included in | ||
127 | the extensible SDK for all recipes in the "world" target. | ||
128 | </p></li> | ||
129 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDK_INCLUDE_TOOLCHAIN.html" target="_self"><code class="filename">SDK_INCLUDE_TOOLCHAIN</code></a>: | ||
130 | Specifies whether or not the toolchain will be included | ||
131 | when building the extensible SDK. | ||
132 | </p></li> | ||
133 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDK_LOCAL_CONF_WHITELIST.html" target="_self"><code class="filename">SDK_LOCAL_CONF_WHITELIST</code></a>: | ||
134 | A list of variables allowed through from the build system | ||
135 | configuration into the extensible SDK configuration. | ||
136 | </p></li> | ||
137 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDK_LOCAL_CONF_BLACKLIST.html" target="_self"><code class="filename">SDK_LOCAL_CONF_BLACKLIST</code></a>: | ||
138 | A list of variables not allowed through from the build | ||
139 | system configuration into the extensible SDK configuration. | ||
140 | </p></li> | ||
141 | <li class="listitem"><p><a class="link" href="../ref-manual/var-SDK_INHERIT_BLACKLIST.html" target="_self"><code class="filename">SDK_INHERIT_BLACKLIST</code></a>: | ||
142 | A list of classes to remove from the | ||
143 | <a class="link" href="../ref-manual/var-INHERIT.html" target="_self"><code class="filename">INHERIT</code></a> | ||
144 | value globally within the extensible SDK configuration. | ||
145 | </p></li> | ||
146 | </ul></div> | ||
147 | <p> | ||
148 | </p> | ||
149 | </div></body> | ||
150 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.6. SDK Generation</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="image-generation-dev-environment.html" title="2.8.5.5. Image Generation"> | ||
10 | <link rel="next" href="stamp-files-and-the-rerunning-of-tasks.html" title="2.8.5.7. Stamp Files and the Rerunning of Tasks"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.6. SDK Generation"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="sdk-generation-dev-environment"></a>2.8.5.6. SDK Generation</h4></div></div></div> | ||
15 | <p> | ||
16 | The OpenEmbedded build system uses BitBake to generate the | ||
17 | Software Development Kit (SDK) installer script for both the | ||
18 | standard and extensible SDKs: | ||
19 | <img src="figures/sdk-generation.png" align="middle"> | ||
20 | </p> | ||
21 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
22 | <h3 class="title">Note</h3> | ||
23 | For more information on the cross-development toolchain | ||
24 | generation, see the | ||
25 | "<a class="link" href="cross-development-toolchain-generation.html" title="3.2. Cross-Development Toolchain Generation">Cross-Development Toolchain Generation</a>" | ||
26 | section. | ||
27 | For information on advantages gained when building a | ||
28 | cross-development toolchain using the | ||
29 | <a class="link" href="../ref-manual/ref-tasks-populate_sdk.html" target="_self"><code class="filename">do_populate_sdk</code></a> | ||
30 | task, see the | ||
31 | "<a class="link" href="../sdk-manual/sdk-building-an-sdk-installer.html" target="_self">Building an SDK Installer</a>" | ||
32 | section in the Yocto Project Application Development and the | ||
33 | Extensible Software Development Kit (SDK) manual. | ||
34 | </div> | ||
35 | <p> | ||
36 | Like image generation, the SDK script process consists of | ||
37 | several stages and depends on many variables. | ||
38 | The <code class="filename">do_populate_sdk</code> and | ||
39 | <code class="filename">do_populate_sdk_ext</code> tasks use these | ||
40 | key variables to help create the list of packages to actually | ||
41 | install. | ||
42 | For information on the variables listed in the figure, see the | ||
43 | "<a class="link" href="sdk-dev-environment.html" title="2.8.7. Application Development SDK">Application Development SDK</a>" | ||
44 | section. | ||
45 | </p> | ||
46 | <p> | ||
47 | The <code class="filename">do_populate_sdk</code> task helps create | ||
48 | the standard SDK and handles two parts: a target part and a | ||
49 | host part. | ||
50 | The target part is the part built for the target hardware and | ||
51 | includes libraries and headers. | ||
52 | The host part is the part of the SDK that runs on the | ||
53 | <a class="link" href="../ref-manual/var-SDKMACHINE.html" target="_self"><code class="filename">SDKMACHINE</code></a>. | ||
54 | </p> | ||
55 | <p> | ||
56 | The <code class="filename">do_populate_sdk_ext</code> task helps create | ||
57 | the extensible SDK and handles host and target parts | ||
58 | differently than its counter part does for the standard SDK. | ||
59 | For the extensible SDK, the task encapsulates the build system, | ||
60 | which includes everything needed (host and target) for the SDK. | ||
61 | </p> | ||
62 | <p> | ||
63 | Regardless of the type of SDK being constructed, the | ||
64 | tasks perform some cleanup after which a cross-development | ||
65 | environment setup script and any needed configuration files | ||
66 | are created. | ||
67 | The final output is the Cross-development | ||
68 | toolchain installation script (<code class="filename">.sh</code> file), | ||
69 | which includes the environment setup script. | ||
70 | </p> | ||
71 | </div></body> | ||
72 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.8. Setscene Tasks and Shared State</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="stamp-files-and-the-rerunning-of-tasks.html" title="2.8.5.7. Stamp Files and the Rerunning of Tasks"> | ||
10 | <link rel="next" href="images-dev-environment.html" title="2.8.6. Images"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.8. Setscene Tasks and Shared State"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="setscene-tasks-and-shared-state"></a>2.8.5.8. Setscene Tasks and Shared State</h4></div></div></div> | ||
15 | <p> | ||
16 | The description of tasks so far assumes that BitBake needs to | ||
17 | build everything and there are no prebuilt objects available. | ||
18 | BitBake does support skipping tasks if prebuilt objects are | ||
19 | available. | ||
20 | These objects are usually made available in the form of a | ||
21 | shared state (sstate) cache. | ||
22 | </p> | ||
23 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
24 | <h3 class="title">Note</h3> | ||
25 | For information on variables affecting sstate, see the | ||
26 | <a class="link" href="../ref-manual/var-SSTATE_DIR.html" target="_self"><code class="filename">SSTATE_DIR</code></a> | ||
27 | and | ||
28 | <a class="link" href="../ref-manual/var-SSTATE_MIRRORS.html" target="_self"><code class="filename">SSTATE_MIRRORS</code></a> | ||
29 | variables. | ||
30 | </div> | ||
31 | <p> | ||
32 | </p> | ||
33 | <p> | ||
34 | The idea of a setscene task (i.e | ||
35 | <code class="filename">do_</code><em class="replaceable"><code>taskname</code></em><code class="filename">_setscene</code>) | ||
36 | is a version of the task where | ||
37 | instead of building something, BitBake can skip to the end | ||
38 | result and simply place a set of files into specific locations | ||
39 | as needed. | ||
40 | In some cases, it makes sense to have a setscene task variant | ||
41 | (e.g. generating package files in the | ||
42 | <code class="filename">do_package_write_*</code> task). | ||
43 | In other cases, it does not make sense, (e.g. a | ||
44 | <a class="link" href="../ref-manual/ref-tasks-patch.html" target="_self"><code class="filename">do_patch</code></a> | ||
45 | task or | ||
46 | <a class="link" href="../ref-manual/ref-tasks-unpack.html" target="_self"><code class="filename">do_unpack</code></a> | ||
47 | task) since the work involved would be equal to or greater than | ||
48 | the underlying task. | ||
49 | </p> | ||
50 | <p> | ||
51 | In the OpenEmbedded build system, the common tasks that have | ||
52 | setscene variants are | ||
53 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a>, | ||
54 | <code class="filename">do_package_write_*</code>, | ||
55 | <a class="link" href="../ref-manual/ref-tasks-deploy.html" target="_self"><code class="filename">do_deploy</code></a>, | ||
56 | <a class="link" href="../ref-manual/ref-tasks-packagedata.html" target="_self"><code class="filename">do_packagedata</code></a>, | ||
57 | and | ||
58 | <a class="link" href="../ref-manual/ref-tasks-populate_sysroot.html" target="_self"><code class="filename">do_populate_sysroot</code></a>. | ||
59 | Notice that these are most of the tasks whose output is an | ||
60 | end result. | ||
61 | </p> | ||
62 | <p> | ||
63 | The OpenEmbedded build system has knowledge of the relationship | ||
64 | between these tasks and other tasks that precede them. | ||
65 | For example, if BitBake runs | ||
66 | <code class="filename">do_populate_sysroot_setscene</code> for | ||
67 | something, there is little point in running any of the | ||
68 | <code class="filename">do_fetch</code>, <code class="filename">do_unpack</code>, | ||
69 | <code class="filename">do_patch</code>, | ||
70 | <code class="filename">do_configure</code>, | ||
71 | <code class="filename">do_compile</code>, and | ||
72 | <code class="filename">do_install</code> tasks. | ||
73 | However, if <code class="filename">do_package</code> needs to be run, | ||
74 | BitBake would need to run those other tasks. | ||
75 | </p> | ||
76 | <p> | ||
77 | It becomes more complicated if everything can come from an | ||
78 | sstate cache because some objects are simply not required at | ||
79 | all. | ||
80 | For example, you do not need a compiler or native tools, such | ||
81 | as quilt, if there is nothing to compile or patch. | ||
82 | If the <code class="filename">do_package_write_*</code> packages are | ||
83 | available from sstate, BitBake does not need the | ||
84 | <code class="filename">do_package</code> task data. | ||
85 | </p> | ||
86 | <p> | ||
87 | To handle all these complexities, BitBake runs in two phases. | ||
88 | The first is the "setscene" stage. | ||
89 | During this stage, BitBake first checks the sstate cache for | ||
90 | any targets it is planning to build. | ||
91 | BitBake does a fast check to see if the object exists rather | ||
92 | than a complete download. | ||
93 | If nothing exists, the second phase, which is the setscene | ||
94 | stage, completes and the main build proceeds. | ||
95 | </p> | ||
96 | <p> | ||
97 | If objects are found in the sstate cache, the OpenEmbedded | ||
98 | build system works backwards from the end targets specified | ||
99 | by the user. | ||
100 | For example, if an image is being built, the OpenEmbedded build | ||
101 | system first looks for the packages needed for that image and | ||
102 | the tools needed to construct an image. | ||
103 | If those are available, the compiler is not needed. | ||
104 | Thus, the compiler is not even downloaded. | ||
105 | If something was found to be unavailable, or the download or | ||
106 | setscene task fails, the OpenEmbedded build system then tries | ||
107 | to install dependencies, such as the compiler, from the cache. | ||
108 | </p> | ||
109 | <p> | ||
110 | The availability of objects in the sstate cache is handled by | ||
111 | the function specified by the | ||
112 | <a class="link" href="../bitbake-user-manual/var-BB_HASHCHECK_FUNCTION.html" target="_self"><code class="filename">BB_HASHCHECK_FUNCTION</code></a> | ||
113 | variable and returns a list of the objects that are available. | ||
114 | The function specified by the | ||
115 | <a class="link" href="../bitbake-user-manual/var-BB_SETSCENE_DEPVALID.html" target="_self"><code class="filename">BB_SETSCENE_DEPVALID</code></a> | ||
116 | variable is the function that determines whether a given | ||
117 | dependency needs to be followed, and whether for any given | ||
118 | relationship the function needs to be passed. | ||
119 | The function returns a True or False value. | ||
120 | </p> | ||
121 | </div></body> | ||
122 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3. Shared State Cache</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="cross-development-toolchain-generation.html" title="3.2. Cross-Development Toolchain Generation"> | ||
10 | <link rel="next" href="overall-architecture.html" title="3.3.1. Overall Architecture"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3. Shared State Cache"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="shared-state-cache"></a>3.3. Shared State Cache</h2></div></div></div> | ||
15 | <p> | ||
16 | By design, the OpenEmbedded build system builds everything from | ||
17 | scratch unless BitBake can determine that parts do not need to be | ||
18 | rebuilt. | ||
19 | Fundamentally, building from scratch is attractive as it means all | ||
20 | parts are built fresh and there is no possibility of stale data | ||
21 | causing problems. | ||
22 | When developers hit problems, they typically default back to | ||
23 | building from scratch so they know the state of things from the | ||
24 | start. | ||
25 | </p> | ||
26 | <p> | ||
27 | Building an image from scratch is both an advantage and a | ||
28 | disadvantage to the process. | ||
29 | As mentioned in the previous paragraph, building from scratch | ||
30 | ensures that everything is current and starts from a known state. | ||
31 | However, building from scratch also takes much longer as it | ||
32 | generally means rebuilding things that do not necessarily need | ||
33 | to be rebuilt. | ||
34 | </p> | ||
35 | <p> | ||
36 | The Yocto Project implements shared state code that supports | ||
37 | incremental builds. | ||
38 | The implementation of the shared state code answers the following | ||
39 | questions that were fundamental roadblocks within the OpenEmbedded | ||
40 | incremental build support system: | ||
41 | </p> | ||
42 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
43 | <li class="listitem"><p> | ||
44 | What pieces of the system have changed and what pieces have | ||
45 | not changed? | ||
46 | </p></li> | ||
47 | <li class="listitem"><p> | ||
48 | How are changed pieces of software removed and replaced? | ||
49 | </p></li> | ||
50 | <li class="listitem"><p> | ||
51 | How are pre-built components that do not need to be rebuilt | ||
52 | from scratch used when they are available? | ||
53 | </p></li> | ||
54 | </ul></div> | ||
55 | <p> | ||
56 | </p> | ||
57 | <p> | ||
58 | For the first question, the build system detects changes in the | ||
59 | "inputs" to a given task by creating a checksum (or signature) of | ||
60 | the task's inputs. | ||
61 | If the checksum changes, the system assumes the inputs have changed | ||
62 | and the task needs to be rerun. | ||
63 | For the second question, the shared state (sstate) code tracks | ||
64 | which tasks add which output to the build process. | ||
65 | This means the output from a given task can be removed, upgraded | ||
66 | or otherwise manipulated. | ||
67 | The third question is partly addressed by the solution for the | ||
68 | second question assuming the build system can fetch the sstate | ||
69 | objects from remote locations and install them if they are deemed | ||
70 | to be valid. | ||
71 | </p> | ||
72 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
73 | <h3 class="title">Note</h3> | ||
74 | The OpenEmbedded build system does not maintain | ||
75 | <a class="link" href="../ref-manual/var-PR.html" target="_self"><code class="filename">PR</code></a> | ||
76 | information as part of the shared state packages. | ||
77 | Consequently, considerations exist that affect maintaining | ||
78 | shared state feeds. | ||
79 | For information on how the OpenEmbedded build system | ||
80 | works with packages and can track incrementing | ||
81 | <code class="filename">PR</code> information, see the | ||
82 | "<a class="link" href="../dev-manual/automatically-incrementing-a-binary-package-revision-number.html" target="_self">Automatically Incrementing a Binary Package Revision Number</a>" | ||
83 | section in the Yocto Project Development Tasks Manual. | ||
84 | </div> | ||
85 | <p> | ||
86 | </p> | ||
87 | <p> | ||
88 | The rest of this section goes into detail about the overall | ||
89 | incremental build architecture, the checksums (signatures), shared | ||
90 | state, and some tips and tricks. | ||
91 | </p> | ||
92 | </div></body> | ||
93 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/shared-state.html b/documentation/getting-started/eclipse/html/getting-started/shared-state.html new file mode 100644 index 0000000000..4389684f3b --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/shared-state.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3.3. Shared State</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="shared-state-cache.html" title="3.3. Shared State Cache"> | ||
9 | <link rel="prev" href="overview-checksums.html" title="3.3.2. Checksums (Signatures)"> | ||
10 | <link rel="next" href="tips-and-tricks.html" title="3.3.4. Tips and Tricks"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3.3. Shared State"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="shared-state"></a>3.3.3. Shared State</h3></div></div></div> | ||
15 | <p> | ||
16 | Checksums and dependencies, as discussed in the previous | ||
17 | section, solve half the problem of supporting a shared state. | ||
18 | The other part of the problem is being able to use checksum | ||
19 | information during the build and being able to reuse or rebuild | ||
20 | specific components. | ||
21 | </p> | ||
22 | <p> | ||
23 | The | ||
24 | <a class="link" href="../ref-manual/ref-classes-sstate.html" target="_self"><code class="filename">sstate</code></a> | ||
25 | class is a relatively generic implementation of how to | ||
26 | "capture" a snapshot of a given task. | ||
27 | The idea is that the build process does not care about the | ||
28 | source of a task's output. | ||
29 | Output could be freshly built or it could be downloaded and | ||
30 | unpacked from somewhere - the build process does not need to | ||
31 | worry about its origin. | ||
32 | </p> | ||
33 | <p> | ||
34 | There are two types of output, one is just about creating a | ||
35 | directory in | ||
36 | <a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a>. | ||
37 | A good example is the output of either | ||
38 | <a class="link" href="../ref-manual/ref-tasks-install.html" target="_self"><code class="filename">do_install</code></a> | ||
39 | or | ||
40 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a>. | ||
41 | The other type of output occurs when a set of data is merged | ||
42 | into a shared directory tree such as the sysroot. | ||
43 | </p> | ||
44 | <p> | ||
45 | The Yocto Project team has tried to keep the details of the | ||
46 | implementation hidden in <code class="filename">sstate</code> class. | ||
47 | From a user's perspective, adding shared state wrapping to a task | ||
48 | is as simple as this | ||
49 | <a class="link" href="../ref-manual/ref-tasks-deploy.html" target="_self"><code class="filename">do_deploy</code></a> | ||
50 | example taken from the | ||
51 | <a class="link" href="../ref-manual/ref-classes-deploy.html" target="_self"><code class="filename">deploy</code></a> | ||
52 | class: | ||
53 | </p> | ||
54 | <pre class="literallayout"> | ||
55 | DEPLOYDIR = "${WORKDIR}/deploy-${PN}" | ||
56 | SSTATETASKS += "do_deploy" | ||
57 | do_deploy[sstate-inputdirs] = "${DEPLOYDIR}" | ||
58 | do_deploy[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}" | ||
59 | |||
60 | python do_deploy_setscene () { | ||
61 | sstate_setscene(d) | ||
62 | } | ||
63 | addtask do_deploy_setscene | ||
64 | do_deploy[dirs] = "${DEPLOYDIR} ${B}" | ||
65 | </pre> | ||
66 | <p> | ||
67 | The following list explains the previous example: | ||
68 | </p> | ||
69 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
70 | <li class="listitem"><p> | ||
71 | Adding "do_deploy" to <code class="filename">SSTATETASKS</code> | ||
72 | adds some required sstate-related processing, which is | ||
73 | implemented in the | ||
74 | <a class="link" href="../ref-manual/ref-classes-sstate.html" target="_self"><code class="filename">sstate</code></a> | ||
75 | class, to before and after the | ||
76 | <a class="link" href="../ref-manual/ref-tasks-deploy.html" target="_self"><code class="filename">do_deploy</code></a> | ||
77 | task. | ||
78 | </p></li> | ||
79 | <li class="listitem"><p> | ||
80 | The | ||
81 | <code class="filename">do_deploy[sstate-inputdirs] = "${DEPLOYDIR}"</code> | ||
82 | declares that <code class="filename">do_deploy</code> places its | ||
83 | output in <code class="filename">${DEPLOYDIR}</code> when run | ||
84 | normally (i.e. when not using the sstate cache). | ||
85 | This output becomes the input to the shared state cache. | ||
86 | </p></li> | ||
87 | <li class="listitem"> | ||
88 | <p> | ||
89 | The | ||
90 | <code class="filename">do_deploy[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"</code> | ||
91 | line causes the contents of the shared state cache to be | ||
92 | copied to <code class="filename">${DEPLOY_DIR_IMAGE}</code>. | ||
93 | </p> | ||
94 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
95 | <h3 class="title">Note</h3> | ||
96 | If <code class="filename">do_deploy</code> is not already in | ||
97 | the shared state cache or if its input checksum | ||
98 | (signature) has changed from when the output was | ||
99 | cached, the task will be run to populate the shared | ||
100 | state cache, after which the contents of the shared | ||
101 | state cache is copied to | ||
102 | <code class="filename">${DEPLOY_DIR_IMAGE}</code>. | ||
103 | If <code class="filename">do_deploy</code> is in the shared | ||
104 | state cache and its signature indicates that the | ||
105 | cached output is still valid (i.e. if no | ||
106 | relevant task inputs have changed), then the | ||
107 | contents of the shared state cache will be copied | ||
108 | directly to | ||
109 | <code class="filename">${DEPLOY_DIR_IMAGE}</code> by the | ||
110 | <code class="filename">do_deploy_setscene</code> task | ||
111 | instead, skipping the | ||
112 | <code class="filename">do_deploy</code> task. | ||
113 | </div> | ||
114 | <p> | ||
115 | </p> | ||
116 | </li> | ||
117 | <li class="listitem"> | ||
118 | <p> | ||
119 | The following task definition is glue logic needed to | ||
120 | make the previous settings effective: | ||
121 | </p> | ||
122 | <pre class="literallayout"> | ||
123 | python do_deploy_setscene () { | ||
124 | sstate_setscene(d) | ||
125 | } | ||
126 | addtask do_deploy_setscene | ||
127 | </pre> | ||
128 | <p> | ||
129 | <code class="filename">sstate_setscene()</code> takes the flags | ||
130 | above as input and accelerates the | ||
131 | <code class="filename">do_deploy</code> task through the | ||
132 | shared state cache if possible. | ||
133 | If the task was accelerated, | ||
134 | <code class="filename">sstate_setscene()</code> returns True. | ||
135 | Otherwise, it returns False, and the normal | ||
136 | <code class="filename">do_deploy</code> task runs. | ||
137 | For more information, see the | ||
138 | "<a class="link" href="../bitbake-user-manual/setscene.html" target="_self">setscene</a>" | ||
139 | section in the BitBake User Manual. | ||
140 | </p> | ||
141 | </li> | ||
142 | <li class="listitem"> | ||
143 | <p> | ||
144 | The <code class="filename">do_deploy[dirs] = "${DEPLOYDIR} ${B}"</code> | ||
145 | line creates <code class="filename">${DEPLOYDIR}</code> and | ||
146 | <code class="filename">${B}</code> before the | ||
147 | <code class="filename">do_deploy</code> task runs, and also sets | ||
148 | the current working directory of | ||
149 | <code class="filename">do_deploy</code> to | ||
150 | <code class="filename">${B}</code>. | ||
151 | For more information, see the | ||
152 | "<a class="link" href="../bitbake-user-manual/variable-flags.html" target="_self">Variable Flags</a>" | ||
153 | section in the BitBake User Manual. | ||
154 | </p> | ||
155 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
156 | <h3 class="title">Note</h3> | ||
157 | In cases where | ||
158 | <code class="filename">sstate-inputdirs</code> and | ||
159 | <code class="filename">sstate-outputdirs</code> would be the | ||
160 | same, you can use | ||
161 | <code class="filename">sstate-plaindirs</code>. | ||
162 | For example, to preserve the | ||
163 | <code class="filename">${PKGD}</code> and | ||
164 | <code class="filename">${PKGDEST}</code> output from the | ||
165 | <a class="link" href="../ref-manual/ref-tasks-package.html" target="_self"><code class="filename">do_package</code></a> | ||
166 | task, use the following: | ||
167 | <pre class="literallayout"> | ||
168 | do_package[sstate-plaindirs] = "${PKGD} ${PKGDEST}" | ||
169 | </pre> | ||
170 | </div> | ||
171 | <p> | ||
172 | </p> | ||
173 | </li> | ||
174 | <li class="listitem"> | ||
175 | <p> | ||
176 | <code class="filename">sstate-inputdirs</code> and | ||
177 | <code class="filename">sstate-outputdirs</code> can also be used | ||
178 | with multiple directories. | ||
179 | For example, the following declares | ||
180 | <code class="filename">PKGDESTWORK</code> and | ||
181 | <code class="filename">SHLIBWORK</code> as shared state | ||
182 | input directories, which populates the shared state | ||
183 | cache, and <code class="filename">PKGDATA_DIR</code> and | ||
184 | <code class="filename">SHLIBSDIR</code> as the corresponding | ||
185 | shared state output directories: | ||
186 | </p> | ||
187 | <pre class="literallayout"> | ||
188 | do_package[sstate-inputdirs] = "${PKGDESTWORK} ${SHLIBSWORKDIR}" | ||
189 | do_package[sstate-outputdirs] = "${PKGDATA_DIR} ${SHLIBSDIR}" | ||
190 | </pre> | ||
191 | <p> | ||
192 | </p> | ||
193 | </li> | ||
194 | <li class="listitem"> | ||
195 | <p> | ||
196 | These methods also include the ability to take a | ||
197 | lockfile when manipulating shared state directory | ||
198 | structures, for cases where file additions or removals | ||
199 | are sensitive: | ||
200 | </p> | ||
201 | <pre class="literallayout"> | ||
202 | do_package[sstate-lockfile] = "${PACKAGELOCK}" | ||
203 | </pre> | ||
204 | <p> | ||
205 | </p> | ||
206 | </li> | ||
207 | </ul></div> | ||
208 | <p> | ||
209 | </p> | ||
210 | <p> | ||
211 | Behind the scenes, the shared state code works by looking in | ||
212 | <a class="link" href="../ref-manual/var-SSTATE_DIR.html" target="_self"><code class="filename">SSTATE_DIR</code></a> | ||
213 | and | ||
214 | <a class="link" href="../ref-manual/var-SSTATE_MIRRORS.html" target="_self"><code class="filename">SSTATE_MIRRORS</code></a> | ||
215 | for shared state files. | ||
216 | Here is an example: | ||
217 | </p> | ||
218 | <pre class="literallayout"> | ||
219 | SSTATE_MIRRORS ?= "\ | ||
220 | file://.* http://someserver.tld/share/sstate/PATH;downloadfilename=PATH \n \ | ||
221 | file://.* file:///some/local/dir/sstate/PATH" | ||
222 | </pre> | ||
223 | <p> | ||
224 | </p> | ||
225 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
226 | <h3 class="title">Note</h3> | ||
227 | The shared state directory | ||
228 | (<code class="filename">SSTATE_DIR</code>) is organized into | ||
229 | two-character subdirectories, where the subdirectory | ||
230 | names are based on the first two characters of the hash. | ||
231 | If the shared state directory structure for a mirror has the | ||
232 | same structure as <code class="filename">SSTATE_DIR</code>, you must | ||
233 | specify "PATH" as part of the URI to enable the build system | ||
234 | to map to the appropriate subdirectory. | ||
235 | </div> | ||
236 | <p> | ||
237 | </p> | ||
238 | <p> | ||
239 | The shared state package validity can be detected just by | ||
240 | looking at the filename since the filename contains the task | ||
241 | checksum (or signature) as described earlier in this section. | ||
242 | If a valid shared state package is found, the build process | ||
243 | downloads it and uses it to accelerate the task. | ||
244 | </p> | ||
245 | <p> | ||
246 | The build processes use the <code class="filename">*_setscene</code> | ||
247 | tasks for the task acceleration phase. | ||
248 | BitBake goes through this phase before the main execution | ||
249 | code and tries to accelerate any tasks for which it can find | ||
250 | shared state packages. | ||
251 | If a shared state package for a task is available, the | ||
252 | shared state package is used. | ||
253 | This means the task and any tasks on which it is dependent | ||
254 | are not executed. | ||
255 | </p> | ||
256 | <p> | ||
257 | As a real world example, the aim is when building an IPK-based | ||
258 | image, only the | ||
259 | <a class="link" href="../ref-manual/ref-tasks-package_write_ipk.html" target="_self"><code class="filename">do_package_write_ipk</code></a> | ||
260 | tasks would have their shared state packages fetched and | ||
261 | extracted. | ||
262 | Since the sysroot is not used, it would never get extracted. | ||
263 | This is another reason why a task-based approach is preferred | ||
264 | over a recipe-based approach, which would have to install the | ||
265 | output from every task. | ||
266 | </p> | ||
267 | </div></body> | ||
268 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/software-layer.html b/documentation/getting-started/eclipse/html/getting-started/software-layer.html new file mode 100644 index 0000000000..26e169a281 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/software-layer.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.2.3. Software Layer</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
9 | <link rel="prev" href="bsp-layer.html" title="2.8.2.2. BSP Layer"> | ||
10 | <link rel="next" href="sources-dev-environment.html" title="2.8.3. Sources"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.2.3. Software Layer"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="software-layer"></a>2.8.2.3. Software Layer</h4></div></div></div> | ||
15 | <p> | ||
16 | The software layer provides the Metadata for additional | ||
17 | software packages used during the build. | ||
18 | This layer does not include Metadata that is specific to the | ||
19 | distribution or the machine, which are found in their | ||
20 | respective layers. | ||
21 | </p> | ||
22 | <p> | ||
23 | This layer contains any new recipes that your project needs | ||
24 | in the form of recipe files. | ||
25 | </p> | ||
26 | </div></body> | ||
27 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/source-fetching-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/source-fetching-dev-environment.html new file mode 100644 index 0000000000..afcdafdc76 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/source-fetching-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.1. Source Fetching</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
10 | <link rel="next" href="patching-dev-environment.html" title="2.8.5.2. Patching"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.1. Source Fetching"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="source-fetching-dev-environment"></a>2.8.5.1. Source Fetching</h4></div></div></div> | ||
15 | <p> | ||
16 | The first stages of building a recipe are to fetch and unpack | ||
17 | the source code: | ||
18 | </p> | ||
19 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="585"><tr style="height: 450px"><td align="center"><img src="figures/source-fetching.png" align="middle" width="585"></td></tr></table> | ||
20 | <p> | ||
21 | </p> | ||
22 | <p> | ||
23 | The | ||
24 | <a class="link" href="../ref-manual/ref-tasks-fetch.html" target="_self"><code class="filename">do_fetch</code></a> | ||
25 | and | ||
26 | <a class="link" href="../ref-manual/ref-tasks-unpack.html" target="_self"><code class="filename">do_unpack</code></a> | ||
27 | tasks fetch the source files and unpack them into the work | ||
28 | directory. | ||
29 | </p> | ||
30 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
31 | <h3 class="title">Note</h3> | ||
32 | For every local file (e.g. <code class="filename">file://</code>) | ||
33 | that is part of a recipe's | ||
34 | <a class="link" href="../ref-manual/var-SRC_URI.html" target="_self"><code class="filename">SRC_URI</code></a> | ||
35 | statement, the OpenEmbedded build system takes a checksum | ||
36 | of the file for the recipe and inserts the checksum into | ||
37 | the signature for the <code class="filename">do_fetch</code>. | ||
38 | If any local file has been modified, the | ||
39 | <code class="filename">do_fetch</code> task and all tasks that | ||
40 | depend on it are re-executed. | ||
41 | </div> | ||
42 | <p> | ||
43 | By default, everything is accomplished in the | ||
44 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a>, | ||
45 | which has a defined structure. | ||
46 | For additional general information on the Build Directory, | ||
47 | see the | ||
48 | "<a class="link" href="../ref-manual/structure-core-build.html" target="_self"><code class="filename">build/</code></a>" | ||
49 | section in the Yocto Project Reference Manual. | ||
50 | </p> | ||
51 | <p> | ||
52 | Unpacked source files are pointed to by the | ||
53 | <a class="link" href="../ref-manual/var-S.html" target="_self"><code class="filename">S</code></a> | ||
54 | variable. | ||
55 | Each recipe has an area in the Build Directory where the | ||
56 | unpacked source code resides. | ||
57 | The name of that directory for any given recipe is defined from | ||
58 | several different variables. | ||
59 | You can see the variables that define these directories | ||
60 | by looking at the figure: | ||
61 | </p> | ||
62 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
63 | <li class="listitem"><p><a class="link" href="../ref-manual/var-TMPDIR.html" target="_self"><code class="filename">TMPDIR</code></a> - | ||
64 | The base directory where the OpenEmbedded build system | ||
65 | performs all its work during the build. | ||
66 | </p></li> | ||
67 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PACKAGE_ARCH.html" target="_self"><code class="filename">PACKAGE_ARCH</code></a> - | ||
68 | The architecture of the built package or packages. | ||
69 | </p></li> | ||
70 | <li class="listitem"><p><a class="link" href="../ref-manual/var-TARGET_OS.html" target="_self"><code class="filename">TARGET_OS</code></a> - | ||
71 | The operating system of the target device. | ||
72 | </p></li> | ||
73 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PN.html" target="_self"><code class="filename">PN</code></a> - | ||
74 | The name of the built package. | ||
75 | </p></li> | ||
76 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PV.html" target="_self"><code class="filename">PV</code></a> - | ||
77 | The version of the recipe used to build the package. | ||
78 | </p></li> | ||
79 | <li class="listitem"><p><a class="link" href="../ref-manual/var-PR.html" target="_self"><code class="filename">PR</code></a> - | ||
80 | The revision of the recipe used to build the package. | ||
81 | </p></li> | ||
82 | <li class="listitem"><p><a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a> - | ||
83 | The location within <code class="filename">TMPDIR</code> where | ||
84 | a specific package is built. | ||
85 | </p></li> | ||
86 | <li class="listitem"><p><a class="link" href="../ref-manual/var-S.html" target="_self"><code class="filename">S</code></a> - | ||
87 | Contains the unpacked source files for a given recipe. | ||
88 | </p></li> | ||
89 | </ul></div> | ||
90 | <p> | ||
91 | </p> | ||
92 | </div></body> | ||
93 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/source-mirrors.html b/documentation/getting-started/eclipse/html/getting-started/source-mirrors.html new file mode 100644 index 0000000000..178903c96e --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/source-mirrors.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.3.4. Source Mirror(s)</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="sources-dev-environment.html" title="2.8.3. Sources"> | ||
9 | <link rel="prev" href="scms.html" title="2.8.3.3. Source Control Managers (Optional)"> | ||
10 | <link rel="next" href="package-feeds-dev-environment.html" title="2.8.4. Package Feeds"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.3.4. Source Mirror(s)"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="source-mirrors"></a>2.8.3.4. Source Mirror(s)</h4></div></div></div> | ||
15 | <p> | ||
16 | Two kinds of mirrors exist: pre-mirrors and regular mirrors. | ||
17 | The | ||
18 | <a class="link" href="../ref-manual/var-PREMIRRORS.html" target="_self"><code class="filename">PREMIRRORS</code></a> | ||
19 | and | ||
20 | <a class="link" href="../ref-manual/var-MIRRORS.html" target="_self"><code class="filename">MIRRORS</code></a> | ||
21 | variables point to these, respectively. | ||
22 | BitBake checks pre-mirrors before looking upstream for any | ||
23 | source files. | ||
24 | Pre-mirrors are appropriate when you have a shared directory | ||
25 | that is not a directory defined by the | ||
26 | <a class="link" href="../ref-manual/var-DL_DIR.html" target="_self"><code class="filename">DL_DIR</code></a> | ||
27 | variable. | ||
28 | A Pre-mirror typically points to a shared directory that is | ||
29 | local to your organization. | ||
30 | </p> | ||
31 | <p> | ||
32 | Regular mirrors can be any site across the Internet that is | ||
33 | used as an alternative location for source code should the | ||
34 | primary site not be functioning for some reason or another. | ||
35 | </p> | ||
36 | </div></body> | ||
37 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/sources-dev-environment.html b/documentation/getting-started/eclipse/html/getting-started/sources-dev-environment.html new file mode 100644 index 0000000000..ab7718074f --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/sources-dev-environment.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.3. Sources</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="software-layer.html" title="2.8.2.3. Software Layer"> | ||
10 | <link rel="next" href="upstream-project-releases.html" title="2.8.3.1. Upstream Project Releases"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.3. Sources"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="sources-dev-environment"></a>2.8.3. Sources</h3></div></div></div> | ||
15 | <p> | ||
16 | In order for the OpenEmbedded build system to create an image or | ||
17 | any target, it must be able to access source files. | ||
18 | The | ||
19 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a> | ||
20 | represents source files using the "Upstream Project Releases", | ||
21 | "Local Projects", and "SCMs (optional)" boxes. | ||
22 | The figure represents mirrors, which also play a role in locating | ||
23 | source files, with the "Source Mirror(s)" box. | ||
24 | </p> | ||
25 | <p> | ||
26 | The method by which source files are ultimately organized is | ||
27 | a function of the project. | ||
28 | For example, for released software, projects tend to use tarballs | ||
29 | or other archived files that can capture the state of a release | ||
30 | guaranteeing that it is statically represented. | ||
31 | On the other hand, for a project that is more dynamic or | ||
32 | experimental in nature, a project might keep source files in a | ||
33 | repository controlled by a Source Control Manager (SCM) such as | ||
34 | Git. | ||
35 | Pulling source from a repository allows you to control | ||
36 | the point in the repository (the revision) from which you want to | ||
37 | build software. | ||
38 | Finally, a combination of the two might exist, which would give the | ||
39 | consumer a choice when deciding where to get source files. | ||
40 | </p> | ||
41 | <p> | ||
42 | BitBake uses the | ||
43 | <a class="link" href="../ref-manual/var-SRC_URI.html" target="_self"><code class="filename">SRC_URI</code></a> | ||
44 | variable to point to source files regardless of their location. | ||
45 | Each recipe must have a <code class="filename">SRC_URI</code> variable | ||
46 | that points to the source. | ||
47 | </p> | ||
48 | <p> | ||
49 | Another area that plays a significant role in where source files | ||
50 | come from is pointed to by the | ||
51 | <a class="link" href="../ref-manual/var-DL_DIR.html" target="_self"><code class="filename">DL_DIR</code></a> | ||
52 | variable. | ||
53 | This area is a cache that can hold previously downloaded source. | ||
54 | You can also instruct the OpenEmbedded build system to create | ||
55 | tarballs from Git repositories, which is not the default behavior, | ||
56 | and store them in the <code class="filename">DL_DIR</code> by using the | ||
57 | <a class="link" href="../ref-manual/var-BB_GENERATE_MIRROR_TARBALLS.html" target="_self"><code class="filename">BB_GENERATE_MIRROR_TARBALLS</code></a> | ||
58 | variable. | ||
59 | </p> | ||
60 | <p> | ||
61 | Judicious use of a <code class="filename">DL_DIR</code> directory can | ||
62 | save the build system a trip across the Internet when looking | ||
63 | for files. | ||
64 | A good method for using a download directory is to have | ||
65 | <code class="filename">DL_DIR</code> point to an area outside of your | ||
66 | Build Directory. | ||
67 | Doing so allows you to safely delete the Build Directory | ||
68 | if needed without fear of removing any downloaded source file. | ||
69 | </p> | ||
70 | <p> | ||
71 | The remainder of this section provides a deeper look into the | ||
72 | source files and the mirrors. | ||
73 | Here is a more detailed look at the source file area of the | ||
74 | base figure: | ||
75 | </p> | ||
76 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 675px"><td align="center"><img src="figures/source-input.png" align="middle" width="630"></td></tr></table> | ||
77 | <p> | ||
78 | </p> | ||
79 | </div></body> | ||
80 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/stamp-files-and-the-rerunning-of-tasks.html b/documentation/getting-started/eclipse/html/getting-started/stamp-files-and-the-rerunning-of-tasks.html new file mode 100644 index 0000000000..b649c69b2b --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/stamp-files-and-the-rerunning-of-tasks.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.5.7. Stamp Files and the Rerunning of Tasks</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
9 | <link rel="prev" href="sdk-generation-dev-environment.html" title="2.8.5.6. SDK Generation"> | ||
10 | <link rel="next" href="setscene-tasks-and-shared-state.html" title="2.8.5.8. Setscene Tasks and Shared State"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.7. Stamp Files and the Rerunning of Tasks"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="stamp-files-and-the-rerunning-of-tasks"></a>2.8.5.7. Stamp Files and the Rerunning of Tasks</h4></div></div></div> | ||
15 | <p> | ||
16 | For each task that completes successfully, BitBake writes a | ||
17 | stamp file into the | ||
18 | <a class="link" href="../ref-manual/var-STAMPS_DIR.html" target="_self"><code class="filename">STAMPS_DIR</code></a> | ||
19 | directory. | ||
20 | The beginning of the stamp file's filename is determined by the | ||
21 | <a class="link" href="../ref-manual/var-STAMP.html" target="_self"><code class="filename">STAMP</code></a> | ||
22 | variable, and the end of the name consists of the task's name | ||
23 | and current | ||
24 | <a class="link" href="overview-checksums.html" title="3.3.2. Checksums (Signatures)">input checksum</a>. | ||
25 | </p> | ||
26 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
27 | <h3 class="title">Note</h3> | ||
28 | This naming scheme assumes that | ||
29 | <a class="link" href="../bitbake-user-manual/var-BB_SIGNATURE_HANDLER.html" target="_self"><code class="filename">BB_SIGNATURE_HANDLER</code></a> | ||
30 | is "OEBasicHash", which is almost always the case in | ||
31 | current OpenEmbedded. | ||
32 | </div> | ||
33 | <p> | ||
34 | To determine if a task needs to be rerun, BitBake checks if a | ||
35 | stamp file with a matching input checksum exists for the task. | ||
36 | If such a stamp file exists, the task's output is assumed to | ||
37 | exist and still be valid. | ||
38 | If the file does not exist, the task is rerun. | ||
39 | </p> | ||
40 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
41 | <h3 class="title">Note</h3> | ||
42 | <p>The stamp mechanism is more general than the shared | ||
43 | state (sstate) cache mechanism described in the | ||
44 | "<a class="link" href="setscene-tasks-and-shared-state.html" title="2.8.5.8. Setscene Tasks and Shared State">Setscene Tasks and Shared State</a>" | ||
45 | section. | ||
46 | BitBake avoids rerunning any task that has a valid | ||
47 | stamp file, not just tasks that can be accelerated through | ||
48 | the sstate cache.</p> | ||
49 | <p>However, you should realize that stamp files only | ||
50 | serve as a marker that some work has been done and that | ||
51 | these files do not record task output. | ||
52 | The actual task output would usually be somewhere in | ||
53 | <a class="link" href="../ref-manual/var-TMPDIR.html" target="_self"><code class="filename">TMPDIR</code></a> | ||
54 | (e.g. in some recipe's | ||
55 | <a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a>.) | ||
56 | What the sstate cache mechanism adds is a way to cache task | ||
57 | output that can then be shared between build machines. | ||
58 | </p> | ||
59 | </div> | ||
60 | <p> | ||
61 | Since <code class="filename">STAMPS_DIR</code> is usually a subdirectory | ||
62 | of <code class="filename">TMPDIR</code>, removing | ||
63 | <code class="filename">TMPDIR</code> will also remove | ||
64 | <code class="filename">STAMPS_DIR</code>, which means tasks will | ||
65 | properly be rerun to repopulate <code class="filename">TMPDIR</code>. | ||
66 | </p> | ||
67 | <p> | ||
68 | If you want some task to always be considered "out of date", | ||
69 | you can mark it with the | ||
70 | <a class="link" href="../bitbake-user-manual/variable-flags.html" target="_self"><code class="filename">nostamp</code></a> | ||
71 | varflag. | ||
72 | If some other task depends on such a task, then that task will | ||
73 | also always be considered out of date, which might not be what | ||
74 | you want. | ||
75 | </p> | ||
76 | <p> | ||
77 | For details on how to view information about a task's | ||
78 | signature, see the | ||
79 | "<a class="link" href="../dev-manual/dev-viewing-task-variable-dependencies.html" target="_self">Viewing Task Variable Dependencies</a>" | ||
80 | section in the Yocto Project Development Tasks Manual. | ||
81 | </p> | ||
82 | </div></body> | ||
83 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/tips-and-tricks.html b/documentation/getting-started/eclipse/html/getting-started/tips-and-tricks.html new file mode 100644 index 0000000000..d0c8522d95 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/tips-and-tricks.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.3.4. Tips and Tricks</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="shared-state-cache.html" title="3.3. Shared State Cache"> | ||
9 | <link rel="prev" href="shared-state.html" title="3.3.3. Shared State"> | ||
10 | <link rel="next" href="overview-debugging.html" title="3.3.4.1. Debugging"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.3.4. Tips and Tricks"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="tips-and-tricks"></a>3.3.4. Tips and Tricks</h3></div></div></div> | ||
15 | <p> | ||
16 | The code in the build system that supports incremental builds | ||
17 | is not simple code. | ||
18 | This section presents some tips and tricks that help you work | ||
19 | around issues related to shared state code. | ||
20 | </p> | ||
21 | </div></body> | ||
22 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/upstream-project-releases.html b/documentation/getting-started/eclipse/html/getting-started/upstream-project-releases.html new file mode 100644 index 0000000000..ef9bc18dde --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/upstream-project-releases.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.3.1. Upstream Project Releases</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="sources-dev-environment.html" title="2.8.3. Sources"> | ||
9 | <link rel="prev" href="sources-dev-environment.html" title="2.8.3. Sources"> | ||
10 | <link rel="next" href="local-projects.html" title="2.8.3.2. Local Projects"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.3.1. Upstream Project Releases"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="upstream-project-releases"></a>2.8.3.1. Upstream Project Releases</h4></div></div></div> | ||
15 | <p> | ||
16 | Upstream project releases exist anywhere in the form of an | ||
17 | archived file (e.g. tarball or zip file). | ||
18 | These files correspond to individual recipes. | ||
19 | For example, the figure uses specific releases each for | ||
20 | BusyBox, Qt, and Dbus. | ||
21 | An archive file can be for any released product that can be | ||
22 | built using a recipe. | ||
23 | </p> | ||
24 | </div></body> | ||
25 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/user-configuration.html b/documentation/getting-started/eclipse/html/getting-started/user-configuration.html new file mode 100644 index 0000000000..6f10791e7a --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/user-configuration.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.8.1. User Configuration</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="development-concepts.html" title="2.8. Development Concepts"> | ||
9 | <link rel="prev" href="development-concepts.html" title="2.8. Development Concepts"> | ||
10 | <link rel="next" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.1. User Configuration"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="user-configuration"></a>2.8.1. User Configuration</h3></div></div></div> | ||
15 | <p> | ||
16 | User configuration helps define the build. | ||
17 | Through user configuration, you can tell BitBake the | ||
18 | target architecture for which you are building the image, | ||
19 | where to store downloaded source, and other build properties. | ||
20 | </p> | ||
21 | <p> | ||
22 | The following figure shows an expanded representation of the | ||
23 | "User Configuration" box of the | ||
24 | <a class="link" href="development-concepts.html#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>: | ||
25 | </p> | ||
26 | <p> | ||
27 | </p> | ||
28 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 405px"><td align="center"><img src="figures/user-configuration.png" align="middle" height="405"></td></tr></table> | ||
29 | <p> | ||
30 | </p> | ||
31 | <p> | ||
32 | BitBake needs some basic configuration files in order to complete | ||
33 | a build. | ||
34 | These files are <code class="filename">*.conf</code> files. | ||
35 | The minimally necessary ones reside as example files in the | ||
36 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a>. | ||
37 | For simplicity, this section refers to the Source Directory as | ||
38 | the "Poky Directory." | ||
39 | </p> | ||
40 | <p> | ||
41 | When you clone the <code class="filename">poky</code> Git repository or you | ||
42 | download and unpack a Yocto Project release, you can set up the | ||
43 | Source Directory to be named anything you want. | ||
44 | For this discussion, the cloned repository uses the default | ||
45 | name <code class="filename">poky</code>. | ||
46 | </p> | ||
47 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
48 | <h3 class="title">Note</h3> | ||
49 | The Poky repository is primarily an aggregation of existing | ||
50 | repositories. | ||
51 | It is not a canonical upstream source. | ||
52 | </div> | ||
53 | <p> | ||
54 | </p> | ||
55 | <p> | ||
56 | The <code class="filename">meta-poky</code> layer inside Poky contains | ||
57 | a <code class="filename">conf</code> directory that has example | ||
58 | configuration files. | ||
59 | These example files are used as a basis for creating actual | ||
60 | configuration files when you source the build environment | ||
61 | script | ||
62 | (i.e. | ||
63 | <a class="link" href="../ref-manual/structure-core-script.html" target="_self"><code class="filename">oe-init-build-env</code></a>). | ||
64 | </p> | ||
65 | <p> | ||
66 | Sourcing the build environment script creates a | ||
67 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a> | ||
68 | if one does not already exist. | ||
69 | BitBake uses the Build Directory for all its work during builds. | ||
70 | The Build Directory has a <code class="filename">conf</code> directory that | ||
71 | contains default versions of your <code class="filename">local.conf</code> | ||
72 | and <code class="filename">bblayers.conf</code> configuration files. | ||
73 | These default configuration files are created only if versions | ||
74 | do not already exist in the Build Directory at the time you | ||
75 | source the build environment setup script. | ||
76 | </p> | ||
77 | <p> | ||
78 | Because the Poky repository is fundamentally an aggregation of | ||
79 | existing repositories, some users might be familiar with running | ||
80 | the <code class="filename">oe-init-build-env</code> script in the context | ||
81 | of separate OpenEmbedded-Core and BitBake repositories rather than a | ||
82 | single Poky repository. | ||
83 | This discussion assumes the script is executed from within a cloned | ||
84 | or unpacked version of Poky. | ||
85 | </p> | ||
86 | <p> | ||
87 | Depending on where the script is sourced, different sub-scripts | ||
88 | are called to set up the Build Directory (Yocto or OpenEmbedded). | ||
89 | Specifically, the script | ||
90 | <code class="filename">scripts/oe-setup-builddir</code> inside the | ||
91 | poky directory sets up the Build Directory and seeds the directory | ||
92 | (if necessary) with configuration files appropriate for the | ||
93 | Yocto Project development environment. | ||
94 | </p> | ||
95 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
96 | <h3 class="title">Note</h3> | ||
97 | The <code class="filename">scripts/oe-setup-builddir</code> script | ||
98 | uses the <code class="filename">$TEMPLATECONF</code> variable to | ||
99 | determine which sample configuration files to locate. | ||
100 | </div> | ||
101 | <p> | ||
102 | </p> | ||
103 | <p> | ||
104 | The <code class="filename">local.conf</code> file provides many | ||
105 | basic variables that define a build environment. | ||
106 | Here is a list of a few. | ||
107 | To see the default configurations in a <code class="filename">local.conf</code> | ||
108 | file created by the build environment script, see the | ||
109 | <code class="filename">local.conf.sample</code> in the | ||
110 | <code class="filename">meta-poky</code> layer: | ||
111 | </p> | ||
112 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
113 | <li class="listitem"><p><span class="emphasis"><em>Parallelism Options:</em></span> | ||
114 | Controlled by the | ||
115 | <a class="link" href="../ref-manual/var-BB_NUMBER_THREADS.html" target="_self"><code class="filename">BB_NUMBER_THREADS</code></a>, | ||
116 | <a class="link" href="../ref-manual/var-PARALLEL_MAKE.html" target="_self"><code class="filename">PARALLEL_MAKE</code></a>, | ||
117 | and | ||
118 | <a class="link" href="../bitbake-user-manual/var-BB_NUMBER_PARSE_THREADS.html" target="_self"><code class="filename">BB_NUMBER_PARSE_THREADS</code></a> | ||
119 | variables.</p></li> | ||
120 | <li class="listitem"><p><span class="emphasis"><em>Target Machine Selection:</em></span> | ||
121 | Controlled by the | ||
122 | <a class="link" href="../ref-manual/var-MACHINE.html" target="_self"><code class="filename">MACHINE</code></a> | ||
123 | variable.</p></li> | ||
124 | <li class="listitem"><p><span class="emphasis"><em>Download Directory:</em></span> | ||
125 | Controlled by the | ||
126 | <a class="link" href="../ref-manual/var-DL_DIR.html" target="_self"><code class="filename">DL_DIR</code></a> | ||
127 | variable.</p></li> | ||
128 | <li class="listitem"><p><span class="emphasis"><em>Shared State Directory:</em></span> | ||
129 | Controlled by the | ||
130 | <a class="link" href="../ref-manual/var-SSTATE_DIR.html" target="_self"><code class="filename">SSTATE_DIR</code></a> | ||
131 | variable.</p></li> | ||
132 | <li class="listitem"><p><span class="emphasis"><em>Build Output:</em></span> | ||
133 | Controlled by the | ||
134 | <a class="link" href="../ref-manual/var-TMPDIR.html" target="_self"><code class="filename">TMPDIR</code></a> | ||
135 | variable.</p></li> | ||
136 | </ul></div> | ||
137 | <p> | ||
138 | </p> | ||
139 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
140 | <h3 class="title">Note</h3> | ||
141 | Configurations set in the <code class="filename">conf/local.conf</code> | ||
142 | file can also be set in the | ||
143 | <code class="filename">conf/site.conf</code> and | ||
144 | <code class="filename">conf/auto.conf</code> configuration files. | ||
145 | </div> | ||
146 | <p> | ||
147 | </p> | ||
148 | <p> | ||
149 | The <code class="filename">bblayers.conf</code> file tells BitBake what | ||
150 | layers you want considered during the build. | ||
151 | By default, the layers listed in this file include layers | ||
152 | minimally needed by the build system. | ||
153 | However, you must manually add any custom layers you have created. | ||
154 | You can find more information on working with the | ||
155 | <code class="filename">bblayers.conf</code> file in the | ||
156 | "<a class="link" href="../dev-manual/enabling-your-layer.html" target="_self">Enabling Your Layer</a>" | ||
157 | section in the Yocto Project Development Tasks Manual. | ||
158 | </p> | ||
159 | <p> | ||
160 | The files <code class="filename">site.conf</code> and | ||
161 | <code class="filename">auto.conf</code> are not created by the environment | ||
162 | initialization script. | ||
163 | If you want the <code class="filename">site.conf</code> file, you need to | ||
164 | create that yourself. | ||
165 | The <code class="filename">auto.conf</code> file is typically created by | ||
166 | an autobuilder: | ||
167 | </p> | ||
168 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
169 | <li class="listitem"> | ||
170 | <p><span class="emphasis"><em><code class="filename">site.conf</code>:</em></span> | ||
171 | You can use the <code class="filename">conf/site.conf</code> | ||
172 | configuration file to configure multiple build directories. | ||
173 | For example, suppose you had several build environments and | ||
174 | they shared some common features. | ||
175 | You can set these default build properties here. | ||
176 | A good example is perhaps the packaging format to use | ||
177 | through the | ||
178 | <a class="link" href="../ref-manual/var-PACKAGE_CLASSES.html" target="_self"><code class="filename">PACKAGE_CLASSES</code></a> | ||
179 | variable.</p> | ||
180 | <p>One useful scenario for using the | ||
181 | <code class="filename">conf/site.conf</code> file is to extend your | ||
182 | <a class="link" href="../ref-manual/var-BBPATH.html" target="_self"><code class="filename">BBPATH</code></a> | ||
183 | variable to include the path to a | ||
184 | <code class="filename">conf/site.conf</code>. | ||
185 | Then, when BitBake looks for Metadata using | ||
186 | <code class="filename">BBPATH</code>, it finds the | ||
187 | <code class="filename">conf/site.conf</code> file and applies your | ||
188 | common configurations found in the file. | ||
189 | To override configurations in a particular build directory, | ||
190 | alter the similar configurations within that build | ||
191 | directory's <code class="filename">conf/local.conf</code> file. | ||
192 | </p> | ||
193 | </li> | ||
194 | <li class="listitem"><p><span class="emphasis"><em><code class="filename">auto.conf</code>:</em></span> | ||
195 | The file is usually created and written to by | ||
196 | an autobuilder. | ||
197 | The settings put into the file are typically the same as | ||
198 | you would find in the <code class="filename">conf/local.conf</code> | ||
199 | or the <code class="filename">conf/site.conf</code> files. | ||
200 | </p></li> | ||
201 | </ul></div> | ||
202 | <p> | ||
203 | </p> | ||
204 | <p> | ||
205 | You can edit all configuration files to further define | ||
206 | any particular build environment. | ||
207 | This process is represented by the "User Configuration Edits" | ||
208 | box in the figure. | ||
209 | </p> | ||
210 | <p> | ||
211 | When you launch your build with the | ||
212 | <code class="filename">bitbake <em class="replaceable"><code>target</code></em></code> | ||
213 | command, BitBake sorts out the configurations to ultimately | ||
214 | define your build environment. | ||
215 | It is important to understand that the OpenEmbedded build system | ||
216 | reads the configuration files in a specific order: | ||
217 | <code class="filename">site.conf</code>, <code class="filename">auto.conf</code>, | ||
218 | and <code class="filename">local.conf</code>. | ||
219 | And, the build system applies the normal assignment statement | ||
220 | rules. | ||
221 | Because the files are parsed in a specific order, variable | ||
222 | assignments for the same variable could be affected. | ||
223 | For example, if the <code class="filename">auto.conf</code> file and | ||
224 | the <code class="filename">local.conf</code> set | ||
225 | <em class="replaceable"><code>variable1</code></em> to different values, because | ||
226 | the build system parses <code class="filename">local.conf</code> after | ||
227 | <code class="filename">auto.conf</code>, | ||
228 | <em class="replaceable"><code>variable1</code></em> is assigned the value from | ||
229 | the <code class="filename">local.conf</code> file. | ||
230 | </p> | ||
231 | </div></body> | ||
232 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax.html new file mode 100644 index 0000000000..7e43ebd923 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7.1.2. Explanation of Syntax</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="usingpoky-configuring-LIC_FILES_CHKSUM.html" title="3.7.1. Tracking License Changes"> | ||
9 | <link rel="prev" href="usingpoky-specifying-LIC_FILES_CHKSUM.html" title="3.7.1.1. Specifying the LIC_FILES_CHKSUM Variable"> | ||
10 | <link rel="next" href="enabling-commercially-licensed-recipes.html" title="3.7.2. Enabling Commercially Licensed Recipes"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7.1.2. Explanation of Syntax"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax"></a>3.7.1.2. Explanation of Syntax</h4></div></div></div> | ||
15 | <p> | ||
16 | As mentioned in the previous section, the | ||
17 | <code class="filename">LIC_FILES_CHKSUM</code> variable lists all | ||
18 | the important files that contain the license text for the | ||
19 | source code. | ||
20 | It is possible to specify a checksum for an entire file, | ||
21 | or a specific section of a file (specified by beginning and | ||
22 | ending line numbers with the "beginline" and "endline" | ||
23 | parameters, respectively). | ||
24 | The latter is useful for source files with a license | ||
25 | notice header, README documents, and so forth. | ||
26 | If you do not use the "beginline" parameter, then it is | ||
27 | assumed that the text begins on the first line of the file. | ||
28 | Similarly, if you do not use the "endline" parameter, | ||
29 | it is assumed that the license text ends with the last | ||
30 | line of the file. | ||
31 | </p> | ||
32 | <p> | ||
33 | The "md5" parameter stores the md5 checksum of the license | ||
34 | text. | ||
35 | If the license text changes in any way as compared to | ||
36 | this parameter then a mismatch occurs. | ||
37 | This mismatch triggers a build failure and notifies | ||
38 | the developer. | ||
39 | Notification allows the developer to review and address | ||
40 | the license text changes. | ||
41 | Also note that if a mismatch occurs during the build, | ||
42 | the correct md5 checksum is placed in the build log and | ||
43 | can be easily copied to the recipe. | ||
44 | </p> | ||
45 | <p> | ||
46 | There is no limit to how many files you can specify using | ||
47 | the <code class="filename">LIC_FILES_CHKSUM</code> variable. | ||
48 | Generally, however, every project requires a few | ||
49 | specifications for license tracking. | ||
50 | Many projects have a "COPYING" file that stores the | ||
51 | license information for all the source code files. | ||
52 | This practice allows you to just track the "COPYING" | ||
53 | file as long as it is kept up to date. | ||
54 | </p> | ||
55 | <div class="note" title="Tips" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
56 | <h3 class="title">Tips</h3> | ||
57 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
58 | <li class="listitem"><p> | ||
59 | If you specify an empty or invalid "md5" | ||
60 | parameter, BitBake returns an md5 mis-match | ||
61 | error and displays the correct "md5" parameter | ||
62 | value during the build. | ||
63 | The correct parameter is also captured in | ||
64 | the build log. | ||
65 | </p></li> | ||
66 | <li class="listitem"><p> | ||
67 | If the whole file contains only license text, | ||
68 | you do not need to use the "beginline" and | ||
69 | "endline" parameters. | ||
70 | </p></li> | ||
71 | </ul></div> | ||
72 | </div> | ||
73 | <p> | ||
74 | </p> | ||
75 | </div></body> | ||
76 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-bitbake.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-bitbake.html new file mode 100644 index 0000000000..39fa32b154 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-bitbake.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1.1. BitBake</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
9 | <link rel="prev" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
10 | <link rel="next" href="usingpoky-components-metadata.html" title="3.1.2. Metadata (Recipes)"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1.1. BitBake"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="usingpoky-components-bitbake"></a>3.1.1. BitBake</h3></div></div></div> | ||
15 | <p> | ||
16 | BitBake is the tool at the heart of the OpenEmbedded build | ||
17 | system and is responsible for parsing the | ||
18 | <a class="link" href="../ref-manual/metadata.html" target="_self">Metadata</a>, | ||
19 | generating a list of tasks from it, and then executing those | ||
20 | tasks. | ||
21 | </p> | ||
22 | <p> | ||
23 | This section briefly introduces BitBake. | ||
24 | If you want more information on BitBake, see the | ||
25 | <a class="link" href="../bitbake-user-manual/bitbake-user-manual.html" target="_self">BitBake User Manual</a>. | ||
26 | </p> | ||
27 | <p> | ||
28 | To see a list of the options BitBake supports, use either of | ||
29 | the following commands: | ||
30 | </p> | ||
31 | <pre class="literallayout"> | ||
32 | $ bitbake -h | ||
33 | $ bitbake --help | ||
34 | </pre> | ||
35 | <p> | ||
36 | </p> | ||
37 | <p> | ||
38 | The most common usage for BitBake is | ||
39 | <code class="filename">bitbake <em class="replaceable"><code>packagename</code></em></code>, | ||
40 | where <code class="filename">packagename</code> is the name of the | ||
41 | package you want to build (referred to as the "target" in this | ||
42 | manual). | ||
43 | The target often equates to the first part of a recipe's | ||
44 | filename (e.g. "foo" for a recipe named | ||
45 | <code class="filename">foo_1.3.0-r0.bb</code>). | ||
46 | So, to process the | ||
47 | <code class="filename">matchbox-desktop_1.2.3.bb</code> recipe file, you | ||
48 | might type the following: | ||
49 | </p> | ||
50 | <pre class="literallayout"> | ||
51 | $ bitbake matchbox-desktop | ||
52 | </pre> | ||
53 | <p> | ||
54 | Several different versions of | ||
55 | <code class="filename">matchbox-desktop</code> might exist. | ||
56 | BitBake chooses the one selected by the distribution | ||
57 | configuration. | ||
58 | You can get more details about how BitBake chooses between | ||
59 | different target versions and providers in the | ||
60 | "<a class="link" href="../bitbake-user-manual/bb-bitbake-preferences.html" target="_self">Preferences</a>" | ||
61 | section of the BitBake User Manual. | ||
62 | </p> | ||
63 | <p> | ||
64 | BitBake also tries to execute any dependent tasks first. | ||
65 | So for example, before building | ||
66 | <code class="filename">matchbox-desktop</code>, BitBake would build a | ||
67 | cross compiler and <code class="filename">glibc</code> if they had not | ||
68 | already been built. | ||
69 | </p> | ||
70 | <p> | ||
71 | A useful BitBake option to consider is the | ||
72 | <code class="filename">-k</code> or <code class="filename">--continue</code> | ||
73 | option. | ||
74 | This option instructs BitBake to try and continue processing | ||
75 | the job as long as possible even after encountering an error. | ||
76 | When an error occurs, the target that failed and those that | ||
77 | depend on it cannot be remade. | ||
78 | However, when you use this option other dependencies can | ||
79 | still be processed. | ||
80 | </p> | ||
81 | </div></body> | ||
82 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-classes.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-classes.html new file mode 100644 index 0000000000..809906c999 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-classes.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1.4. Classes</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
9 | <link rel="prev" href="metadata-virtual-providers.html" title="3.1.3. Metadata (Virtual Providers)"> | ||
10 | <link rel="next" href="usingpoky-components-configuration.html" title="3.1.5. Configuration"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1.4. Classes"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="usingpoky-components-classes"></a>3.1.4. Classes</h3></div></div></div> | ||
15 | <p> | ||
16 | Class files (<code class="filename">.bbclass</code>) contain information | ||
17 | that is useful to share between | ||
18 | <a class="link" href="../ref-manual/metadata.html" target="_self">Metadata</a> | ||
19 | files. | ||
20 | An example is the | ||
21 | <a class="link" href="../ref-manual/ref-classes-autotools.html" target="_self"><code class="filename">autotools</code></a> | ||
22 | class, which contains common settings for any application that | ||
23 | Autotools uses. | ||
24 | The | ||
25 | "<a class="link" href="../ref-manual/ref-classes.html" target="_self">Classes</a>" | ||
26 | chapter in the Yocto Project Reference Manual provides | ||
27 | details about classes and how to use them. | ||
28 | </p> | ||
29 | </div></body> | ||
30 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-configuration.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-configuration.html new file mode 100644 index 0000000000..a1ca039c9b --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-configuration.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1.5. Configuration</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
9 | <link rel="prev" href="usingpoky-components-classes.html" title="3.1.4. Classes"> | ||
10 | <link rel="next" href="cross-development-toolchain-generation.html" title="3.2. Cross-Development Toolchain Generation"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1.5. Configuration"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="usingpoky-components-configuration"></a>3.1.5. Configuration</h3></div></div></div> | ||
15 | <p> | ||
16 | The configuration files (<code class="filename">.conf</code>) define | ||
17 | various configuration variables that govern the OpenEmbedded | ||
18 | build process. | ||
19 | These files fall into several areas that define machine | ||
20 | configuration options, distribution configuration options, | ||
21 | compiler tuning options, general common configuration options, | ||
22 | and user configuration options in | ||
23 | <code class="filename">local.conf</code>, which is found in the | ||
24 | <a class="link" href="../ref-manual/build-directory.html" target="_self">Build Directory</a>. | ||
25 | </p> | ||
26 | </div></body> | ||
27 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-metadata.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-metadata.html new file mode 100644 index 0000000000..b25324502e --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-components-metadata.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1.2. Metadata (Recipes)</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="yocto-project-components.html" title="3.1. Yocto Project Components"> | ||
9 | <link rel="prev" href="usingpoky-components-bitbake.html" title="3.1.1. BitBake"> | ||
10 | <link rel="next" href="metadata-virtual-providers.html" title="3.1.3. Metadata (Virtual Providers)"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1.2. Metadata (Recipes)"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="usingpoky-components-metadata"></a>3.1.2. Metadata (Recipes)</h3></div></div></div> | ||
15 | <p> | ||
16 | Files that have the <code class="filename">.bb</code> suffix are | ||
17 | "recipes" files. | ||
18 | In general, a recipe contains information about a single piece | ||
19 | of software. | ||
20 | This information includes the location from which to download | ||
21 | the unaltered source, any source patches to be applied to that | ||
22 | source (if needed), which special configuration options to | ||
23 | apply, how to compile the source files, and how to package the | ||
24 | compiled output. | ||
25 | </p> | ||
26 | <p> | ||
27 | The term "package" is sometimes used to refer to recipes. | ||
28 | However, since the word "package" is used for the packaged | ||
29 | output from the OpenEmbedded build system (i.e. | ||
30 | <code class="filename">.ipk</code> or <code class="filename">.deb</code> files), | ||
31 | this document avoids using the term "package" when referring | ||
32 | to recipes. | ||
33 | </p> | ||
34 | </div></body> | ||
35 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-configuring-LIC_FILES_CHKSUM.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-configuring-LIC_FILES_CHKSUM.html new file mode 100644 index 0000000000..ee59e3bc10 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-configuring-LIC_FILES_CHKSUM.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7.1. Tracking License Changes</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-licenses.html" title="3.7. Licenses"> | ||
9 | <link rel="prev" href="overview-licenses.html" title="3.7. Licenses"> | ||
10 | <link rel="next" href="usingpoky-specifying-LIC_FILES_CHKSUM.html" title="3.7.1.1. Specifying the LIC_FILES_CHKSUM Variable"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7.1. Tracking License Changes"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="usingpoky-configuring-LIC_FILES_CHKSUM"></a>3.7.1. Tracking License Changes</h3></div></div></div> | ||
15 | <p> | ||
16 | The license of an upstream project might change in the future. | ||
17 | In order to prevent these changes going unnoticed, the | ||
18 | <a class="link" href="../ref-manual/var-LIC_FILES_CHKSUM.html" target="_self"><code class="filename">LIC_FILES_CHKSUM</code></a> | ||
19 | variable tracks changes to the license text. The checksums are | ||
20 | validated at the end of the configure step, and if the | ||
21 | checksums do not match, the build will fail. | ||
22 | </p> | ||
23 | </div></body> | ||
24 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/usingpoky-specifying-LIC_FILES_CHKSUM.html b/documentation/getting-started/eclipse/html/getting-started/usingpoky-specifying-LIC_FILES_CHKSUM.html new file mode 100644 index 0000000000..ed9a3cc501 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/usingpoky-specifying-LIC_FILES_CHKSUM.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.7.1.1. Specifying the LIC_FILES_CHKSUM Variable</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="usingpoky-configuring-LIC_FILES_CHKSUM.html" title="3.7.1. Tracking License Changes"> | ||
9 | <link rel="prev" href="usingpoky-configuring-LIC_FILES_CHKSUM.html" title="3.7.1. Tracking License Changes"> | ||
10 | <link rel="next" href="usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax.html" title="3.7.1.2. Explanation of Syntax"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.7.1.1. Specifying the LIC_FILES_CHKSUM Variable"> | ||
13 | <div class="titlepage"><div><div><h4 class="title"> | ||
14 | <a name="usingpoky-specifying-LIC_FILES_CHKSUM"></a>3.7.1.1. Specifying the <code class="filename">LIC_FILES_CHKSUM</code> Variable</h4></div></div></div> | ||
15 | <p> | ||
16 | The <code class="filename">LIC_FILES_CHKSUM</code> | ||
17 | variable contains checksums of the license text in the | ||
18 | source code for the recipe. | ||
19 | Following is an example of how to specify | ||
20 | <code class="filename">LIC_FILES_CHKSUM</code>: | ||
21 | </p> | ||
22 | <pre class="literallayout"> | ||
23 | LIC_FILES_CHKSUM = "file://COPYING;md5=xxxx \ | ||
24 | file://licfile1.txt;beginline=5;endline=29;md5=yyyy \ | ||
25 | file://licfile2.txt;endline=50;md5=zzzz \ | ||
26 | ..." | ||
27 | </pre> | ||
28 | <p> | ||
29 | </p> | ||
30 | <div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
31 | <h3 class="title">Notes</h3> | ||
32 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
33 | <li class="listitem"><p> | ||
34 | When using "beginline" and "endline", realize | ||
35 | that line numbering begins with one and not | ||
36 | zero. | ||
37 | Also, the included lines are inclusive (i.e. | ||
38 | lines five through and including 29 in the | ||
39 | previous example for | ||
40 | <code class="filename">licfile1.txt</code>). | ||
41 | </p></li> | ||
42 | <li class="listitem"><p> | ||
43 | When a license check fails, the selected license | ||
44 | text is included as part of the QA message. | ||
45 | Using this output, you can determine the exact | ||
46 | start and finish for the needed license text. | ||
47 | </p></li> | ||
48 | </ul></div> | ||
49 | </div> | ||
50 | <p> | ||
51 | </p> | ||
52 | <p> | ||
53 | The build system uses the | ||
54 | <a class="link" href="../ref-manual/var-S.html" target="_self"><code class="filename">S</code></a> | ||
55 | variable as the default directory when searching files | ||
56 | listed in <code class="filename">LIC_FILES_CHKSUM</code>. | ||
57 | The previous example employs the default directory. | ||
58 | </p> | ||
59 | <p> | ||
60 | Consider this next example: | ||
61 | </p> | ||
62 | <pre class="literallayout"> | ||
63 | LIC_FILES_CHKSUM = "file://src/ls.c;beginline=5;endline=16;\ | ||
64 | md5=bb14ed3c4cda583abc85401304b5cd4e" | ||
65 | LIC_FILES_CHKSUM = "file://${WORKDIR}/license.html;md5=5c94767cedb5d6987c902ac850ded2c6" | ||
66 | </pre> | ||
67 | <p> | ||
68 | </p> | ||
69 | <p> | ||
70 | The first line locates a file in | ||
71 | <code class="filename">${S}/src/ls.c</code> and isolates lines five | ||
72 | through 16 as license text. | ||
73 | The second line refers to a file in | ||
74 | <a class="link" href="../ref-manual/var-WORKDIR.html" target="_self"><code class="filename">WORKDIR</code></a>. | ||
75 | </p> | ||
76 | <p> | ||
77 | Note that <code class="filename">LIC_FILES_CHKSUM</code> variable is | ||
78 | mandatory for all recipes, unless the | ||
79 | <code class="filename">LICENSE</code> variable is set to "CLOSED". | ||
80 | </p> | ||
81 | </div></body> | ||
82 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/wayland-support.html b/documentation/getting-started/eclipse/html/getting-started/wayland-support.html new file mode 100644 index 0000000000..da810a4439 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/wayland-support.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.6.1. Support</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="wayland.html" title="3.6. Wayland"> | ||
9 | <link rel="prev" href="wayland.html" title="3.6. Wayland"> | ||
10 | <link rel="next" href="enabling-wayland-in-an-image.html" title="3.6.2. Enabling Wayland in an Image"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.6.1. Support"> | ||
13 | <div class="titlepage"><div><div><h3 class="title"> | ||
14 | <a name="wayland-support"></a>3.6.1. Support</h3></div></div></div> | ||
15 | <p> | ||
16 | The Wayland protocol libraries and the reference Weston | ||
17 | compositor ship as integrated packages in the | ||
18 | <code class="filename">meta</code> layer of the | ||
19 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a>. | ||
20 | Specifically, you can find the recipes that build both Wayland | ||
21 | and Weston at | ||
22 | <code class="filename">meta/recipes-graphics/wayland</code>. | ||
23 | </p> | ||
24 | <p> | ||
25 | You can build both the Wayland and Weston packages for use only | ||
26 | with targets that accept the | ||
27 | <a class="ulink" href="https://en.wikipedia.org/wiki/Mesa_(computer_graphics)" target="_self">Mesa 3D and Direct Rendering Infrastructure</a>, | ||
28 | which is also known as Mesa DRI. | ||
29 | This implies that you cannot build and use the packages if your | ||
30 | target uses, for example, the | ||
31 | <span class="trademark">Intel</span>® Embedded Media | ||
32 | and Graphics Driver | ||
33 | (<span class="trademark">Intel</span>® EMGD) that | ||
34 | overrides Mesa DRI. | ||
35 | </p> | ||
36 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
37 | <h3 class="title">Note</h3> | ||
38 | Due to lack of EGL support, Weston 1.0.3 will not run | ||
39 | directly on the emulated QEMU hardware. | ||
40 | However, this version of Weston will run under X emulation | ||
41 | without issues. | ||
42 | </div> | ||
43 | <p> | ||
44 | </p> | ||
45 | </div></body> | ||
46 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/wayland.html b/documentation/getting-started/eclipse/html/getting-started/wayland.html new file mode 100644 index 0000000000..0747c9238c --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/wayland.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.6. Wayland</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="fakeroot-and-pseudo.html" title="3.5. Fakeroot and Pseudo"> | ||
10 | <link rel="next" href="wayland-support.html" title="3.6.1. Support"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.6. Wayland"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="wayland"></a>3.6. Wayland</h2></div></div></div> | ||
15 | <p> | ||
16 | <a class="ulink" href="http://en.wikipedia.org/wiki/Wayland_(display_server_protocol)" target="_self">Wayland</a> | ||
17 | is a computer display server protocol that | ||
18 | provides a method for compositing window managers to communicate | ||
19 | directly with applications and video hardware and expects them to | ||
20 | communicate with input hardware using other libraries. | ||
21 | Using Wayland with supporting targets can result in better control | ||
22 | over graphics frame rendering than an application might otherwise | ||
23 | achieve. | ||
24 | </p> | ||
25 | <p> | ||
26 | The Yocto Project provides the Wayland protocol libraries and the | ||
27 | reference | ||
28 | <a class="ulink" href="http://en.wikipedia.org/wiki/Wayland_(display_server_protocol)#Weston" target="_self">Weston</a> | ||
29 | compositor as part of its release. | ||
30 | This section describes what you need to do to implement Wayland and | ||
31 | use the compositor when building an image for a supporting target. | ||
32 | </p> | ||
33 | </div></body> | ||
34 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/workflows.html b/documentation/getting-started/eclipse/html/getting-started/workflows.html new file mode 100644 index 0000000000..9d53975678 --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/workflows.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.3. Workflows</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="open-source-philosophy.html" title="2.2. Open Source Philosophy"> | ||
10 | <link rel="next" href="git.html" title="2.4. Git"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.3. Workflows"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="workflows"></a>2.3. Workflows</h2></div></div></div> | ||
15 | <p> | ||
16 | This section provides workflow concepts using the Yocto Project and | ||
17 | Git. | ||
18 | In particular, the information covers basic practices that describe | ||
19 | roles and actions in a collaborative development environment. | ||
20 | </p> | ||
21 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
22 | <h3 class="title">Note</h3> | ||
23 | If you are familiar with this type of development environment, you | ||
24 | might not want to read this section. | ||
25 | </div> | ||
26 | <p> | ||
27 | </p> | ||
28 | <p> | ||
29 | The Yocto Project files are maintained using Git in "master" | ||
30 | branches whose Git histories track every change and whose structures | ||
31 | provides branches for all diverging functionality. | ||
32 | Although there is no need to use Git, many open source projects do so. | ||
33 | </p> | ||
34 | <p> | ||
35 | |||
36 | </p> | ||
37 | <p> | ||
38 | For the Yocto Project, a key individual called the "maintainer" is | ||
39 | responsible for the "master" branch of a given Git repository. | ||
40 | The "master" branch is the “upstream” repository from which final or | ||
41 | most recent builds of the project occur. | ||
42 | The maintainer is responsible for accepting changes from other | ||
43 | developers and for organizing the underlying branch structure to | ||
44 | reflect release strategies and so forth. | ||
45 | </p> | ||
46 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
47 | <h3 class="title">Note</h3>For information on finding out who is responsible for (maintains) | ||
48 | a particular area of code, see the | ||
49 | "<a class="link" href="../dev-manual/how-to-submit-a-change.html" target="_self">Submitting a Change to the Yocto Project</a>" | ||
50 | section of the Yocto Project Development Tasks Manual. | ||
51 | </div> | ||
52 | <p> | ||
53 | </p> | ||
54 | <p> | ||
55 | The Yocto Project <code class="filename">poky</code> Git repository also has an | ||
56 | upstream contribution Git repository named | ||
57 | <code class="filename">poky-contrib</code>. | ||
58 | You can see all the branches in this repository using the web interface | ||
59 | of the | ||
60 | <a class="ulink" href="http://git.yoctoproject.org" target="_self">Source Repositories</a> organized | ||
61 | within the "Poky Support" area. | ||
62 | These branches temporarily hold changes to the project that have been | ||
63 | submitted or committed by the Yocto Project development team and by | ||
64 | community members who contribute to the project. | ||
65 | The maintainer determines if the changes are qualified to be moved | ||
66 | from the "contrib" branches into the "master" branch of the Git | ||
67 | repository. | ||
68 | </p> | ||
69 | <p> | ||
70 | Developers (including contributing community members) create and | ||
71 | maintain cloned repositories of the upstream "master" branch. | ||
72 | The cloned repositories are local to their development platforms and | ||
73 | are used to develop changes. | ||
74 | When a developer is satisfied with a particular feature or change, | ||
75 | they "push" the changes to the appropriate "contrib" repository. | ||
76 | </p> | ||
77 | <p> | ||
78 | Developers are responsible for keeping their local repository | ||
79 | up-to-date with "master". | ||
80 | They are also responsible for straightening out any conflicts that | ||
81 | might arise within files that are being worked on simultaneously by | ||
82 | more than one person. | ||
83 | All this work is done locally on the developer’s machine before | ||
84 | anything is pushed to a "contrib" area and examined at the maintainer’s | ||
85 | level. | ||
86 | </p> | ||
87 | <p> | ||
88 | A somewhat formal method exists by which developers commit changes | ||
89 | and push them into the "contrib" area and subsequently request that | ||
90 | the maintainer include them into "master". | ||
91 | This process is called “submitting a patch” or "submitting a change." | ||
92 | For information on submitting patches and changes, see the | ||
93 | "<a class="link" href="../dev-manual/how-to-submit-a-change.html" target="_self">Submitting a Change to the Yocto Project</a>" | ||
94 | section in the Yocto Project Development Tasks Manual. | ||
95 | </p> | ||
96 | <p> | ||
97 | To summarize the development workflow: a single point of entry | ||
98 | exists for changes into the project’s "master" branch of the | ||
99 | Git repository, which is controlled by the project’s maintainer. | ||
100 | And, a set of developers exist who independently develop, test, and | ||
101 | submit changes to "contrib" areas for the maintainer to examine. | ||
102 | The maintainer then chooses which changes are going to become a | ||
103 | permanent part of the project. | ||
104 | </p> | ||
105 | <p> | ||
106 | </p> | ||
107 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 270px"><td align="left"><img src="figures/git-workflow.png" align="left" height="270"></td></tr></table> | ||
108 | <p> | ||
109 | </p> | ||
110 | <p> | ||
111 | While each development environment is unique, there are some best | ||
112 | practices or methods that help development run smoothly. | ||
113 | The following list describes some of these practices. | ||
114 | For more information about Git workflows, see the workflow topics in | ||
115 | the | ||
116 | <a class="ulink" href="http://book.git-scm.com" target="_self">Git Community Book</a>. | ||
117 | </p> | ||
118 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
119 | <li class="listitem"> | ||
120 | <p> | ||
121 | <span class="emphasis"><em>Make Small Changes:</em></span> | ||
122 | It is best to keep the changes you commit small as compared to | ||
123 | bundling many disparate changes into a single commit. | ||
124 | This practice not only keeps things manageable but also allows | ||
125 | the maintainer to more easily include or refuse changes.</p> | ||
126 | <p>It is also good practice to leave the repository in a | ||
127 | state that allows you to still successfully build your project. | ||
128 | In other words, do not commit half of a feature, | ||
129 | then add the other half as a separate, later commit. | ||
130 | Each commit should take you from one buildable project state | ||
131 | to another buildable state. | ||
132 | </p> | ||
133 | </li> | ||
134 | <li class="listitem"><p> | ||
135 | <span class="emphasis"><em>Use Branches Liberally:</em></span> | ||
136 | It is very easy to create, use, and delete local branches in | ||
137 | your working Git repository. | ||
138 | You can name these branches anything you like. | ||
139 | It is helpful to give them names associated with the particular | ||
140 | feature or change on which you are working. | ||
141 | Once you are done with a feature or change and have merged it | ||
142 | into your local master branch, simply discard the temporary | ||
143 | branch. | ||
144 | </p></li> | ||
145 | <li class="listitem"><p> | ||
146 | <span class="emphasis"><em>Merge Changes:</em></span> | ||
147 | The <code class="filename">git merge</code> command allows you to take | ||
148 | the changes from one branch and fold them into another branch. | ||
149 | This process is especially helpful when more than a single | ||
150 | developer might be working on different parts of the same | ||
151 | feature. | ||
152 | Merging changes also automatically identifies any collisions | ||
153 | or "conflicts" that might happen as a result of the same lines | ||
154 | of code being altered by two different developers. | ||
155 | </p></li> | ||
156 | <li class="listitem"><p> | ||
157 | <span class="emphasis"><em>Manage Branches:</em></span> | ||
158 | Because branches are easy to use, you should use a system | ||
159 | where branches indicate varying levels of code readiness. | ||
160 | For example, you can have a "work" branch to develop in, a | ||
161 | "test" branch where the code or change is tested, a "stage" | ||
162 | branch where changes are ready to be committed, and so forth. | ||
163 | As your project develops, you can merge code across the | ||
164 | branches to reflect ever-increasing stable states of the | ||
165 | development. | ||
166 | </p></li> | ||
167 | <li class="listitem"><p> | ||
168 | <span class="emphasis"><em>Use Push and Pull:</em></span> | ||
169 | The push-pull workflow is based on the concept of developers | ||
170 | "pushing" local commits to a remote repository, which is | ||
171 | usually a contribution repository. | ||
172 | This workflow is also based on developers "pulling" known | ||
173 | states of the project down into their local development | ||
174 | repositories. | ||
175 | The workflow easily allows you to pull changes submitted by | ||
176 | other developers from the upstream repository into your | ||
177 | work area ensuring that you have the most recent software | ||
178 | on which to develop. | ||
179 | The Yocto Project has two scripts named | ||
180 | <code class="filename">create-pull-request</code> and | ||
181 | <code class="filename">send-pull-request</code> that ship with the | ||
182 | release to facilitate this workflow. | ||
183 | You can find these scripts in the <code class="filename">scripts</code> | ||
184 | folder of the | ||
185 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a>. | ||
186 | For information on how to use these scripts, see the | ||
187 | "<a class="link" href="../dev-manual/pushing-a-change-upstream.html" target="_self">Using Scripts to Push a Change Upstream and Request a Pull</a>" | ||
188 | section in the Yocto Project Development Tasks Manual. | ||
189 | </p></li> | ||
190 | <li class="listitem"><p> | ||
191 | <span class="emphasis"><em>Patch Workflow:</em></span> | ||
192 | This workflow allows you to notify the maintainer through an | ||
193 | email that you have a change (or patch) you would like | ||
194 | considered for the "master" branch of the Git repository. | ||
195 | To send this type of change, you format the patch and then | ||
196 | send the email using the Git commands | ||
197 | <code class="filename">git format-patch</code> and | ||
198 | <code class="filename">git send-email</code>. | ||
199 | For information on how to use these scripts, see the | ||
200 | "<a class="link" href="../dev-manual/how-to-submit-a-change.html" target="_self">Submitting a Change to the Yocto Project</a>" | ||
201 | section in the Yocto Project Development Tasks Manual. | ||
202 | </p></li> | ||
203 | </ul></div> | ||
204 | <p> | ||
205 | </p> | ||
206 | </div></body> | ||
207 | </html> | ||
diff --git a/documentation/getting-started/eclipse/html/getting-started/x32.html b/documentation/getting-started/eclipse/html/getting-started/x32.html new file mode 100644 index 0000000000..daffedbeea --- /dev/null +++ b/documentation/getting-started/eclipse/html/getting-started/x32.html | |||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.8. x32 psABI</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="other-variables-related-to-commercial-licenses.html" title="3.7.2.2. Other Variables Related to Commercial Licenses"> | ||
10 | </head> | ||
11 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.8. x32 psABI"> | ||
12 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
13 | <a name="x32"></a>3.8. x32 psABI</h2></div></div></div> | ||
14 | <p> | ||
15 | x32 processor-specific Application Binary Interface | ||
16 | (<a class="ulink" href="https://software.intel.com/en-us/node/628948" target="_self">x32 psABI</a>) | ||
17 | is a native 32-bit processor-specific ABI for | ||
18 | <span class="trademark">Intel</span>® 64 (x86-64) | ||
19 | architectures. | ||
20 | An ABI defines the calling conventions between functions in a | ||
21 | processing environment. | ||
22 | The interface determines what registers are used and what the sizes are | ||
23 | for various C data types. | ||
24 | </p> | ||
25 | <p> | ||
26 | Some processing environments prefer using 32-bit applications even | ||
27 | when running on Intel 64-bit platforms. | ||
28 | Consider the i386 psABI, which is a very old 32-bit ABI for Intel | ||
29 | 64-bit platforms. | ||
30 | The i386 psABI does not provide efficient use and access of the | ||
31 | Intel 64-bit processor resources, leaving the system underutilized. | ||
32 | Now consider the x86_64 psABI. | ||
33 | This ABI is newer and uses 64-bits for data sizes and program | ||
34 | pointers. | ||
35 | The extra bits increase the footprint size of the programs, | ||
36 | libraries, and also increases the memory and file system size | ||
37 | requirements. | ||
38 | Executing under the x32 psABI enables user programs to utilize CPU | ||
39 | and system resources more efficiently while keeping the memory | ||
40 | footprint of the applications low. | ||
41 | Extra bits are used for registers but not for addressing mechanisms. | ||
42 | </p> | ||
43 | <p> | ||
44 | The Yocto Project supports the final specifications of x32 psABI | ||
45 | as follows: | ||
46 | </p> | ||
47 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
48 | <li class="listitem"><p> | ||
49 | You can create packages and images in x32 psABI format on | ||
50 | x86_64 architecture targets. | ||
51 | </p></li> | ||
52 | <li class="listitem"><p> | ||
53 | You can successfully build recipes with the x32 toolchain. | ||
54 | </p></li> | ||
55 | <li class="listitem"><p> | ||
56 | You can create and boot | ||
57 | <code class="filename">core-image-minimal</code> and | ||
58 | <code class="filename">core-image-sato</code> images. | ||
59 | </p></li> | ||
60 | <li class="listitem"><p> | ||
61 | RPM Package Manager (RPM) support exists for x32 binaries. | ||
62 | </p></li> | ||
63 | <li class="listitem"><p> | ||
64 | Support for large images exists. | ||
65 | </p></li> | ||
66 | </ul></div> | ||
67 | <p> | ||
68 | </p> | ||
69 | <p> | ||
70 | For steps on how to use x32 psABI, see the | ||
71 | "<a class="link" href="../dev-manual/using-x32-psabi.html" target="_self">Using x32 psABI</a>" | ||
72 | section in the Yocto Project Development Tasks Manual. | ||
73 | </p> | ||
74 | </div></body> | ||
75 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1. Yocto Project Components</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
9 | <link rel="prev" href="overview-concepts.html" title="Chapter 3. Yocto Project Concepts"> | ||
10 | <link rel="next" href="usingpoky-components-bitbake.html" title="3.1.1. BitBake"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1. Yocto Project Components"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="yocto-project-components"></a>3.1. Yocto Project Components</h2></div></div></div> | ||
15 | <p> | ||
16 | The | ||
17 | <a class="link" href="../ref-manual/bitbake-term.html" target="_self">BitBake</a> | ||
18 | task executor together with various types of configuration files | ||
19 | form the OpenEmbedded Core. | ||
20 | This section overviews these components by describing their use and | ||
21 | how they interact. | ||
22 | </p> | ||
23 | <p> | ||
24 | BitBake handles the parsing and execution of the data files. | ||
25 | The data itself is of various types: | ||
26 | </p> | ||
27 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
28 | <li class="listitem"><p> | ||
29 | <span class="emphasis"><em>Recipes:</em></span> | ||
30 | Provides details about particular pieces of software. | ||
31 | </p></li> | ||
32 | <li class="listitem"><p> | ||
33 | <span class="emphasis"><em>Class Data:</em></span> | ||
34 | Abstracts common build information (e.g. how to build a | ||
35 | Linux kernel). | ||
36 | </p></li> | ||
37 | <li class="listitem"><p> | ||
38 | <span class="emphasis"><em>Configuration Data:</em></span> | ||
39 | Defines machine-specific settings, policy decisions, and | ||
40 | so forth. | ||
41 | Configuration data acts as the glue to bind everything | ||
42 | together. | ||
43 | </p></li> | ||
44 | </ul></div> | ||
45 | <p> | ||
46 | </p> | ||
47 | <p> | ||
48 | BitBake knows how to combine multiple data sources together and | ||
49 | refers to each data source as a layer. | ||
50 | For information on layers, see the | ||
51 | "<a class="link" href="../dev-manual/understanding-and-creating-layers.html" target="_self">Understanding and Creating Layers</a>" | ||
52 | section of the Yocto Project Development Tasks Manual. | ||
53 | </p> | ||
54 | <p> | ||
55 | Following are some brief details on these core components. | ||
56 | For additional information on how these components interact during | ||
57 | a build, see the | ||
58 | "<a class="link" href="development-concepts.html" title="2.8. Development Concepts">Development Concepts</a>" | ||
59 | section. | ||
60 | </p> | ||
61 | </div></body> | ||
62 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.5. Yocto Project Source Repositories</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="basic-commands.html" title="2.4.2. Basic Commands"> | ||
10 | <link rel="next" href="licensing.html" title="2.6. Licensing"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.5. Yocto Project Source Repositories"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="yocto-project-repositories"></a>2.5. Yocto Project Source Repositories</h2></div></div></div> | ||
15 | <p> | ||
16 | The Yocto Project team maintains complete source repositories for all | ||
17 | Yocto Project files at | ||
18 | <a class="ulink" href="http://git.yoctoproject.org/cgit/cgit.cgi" target="_self">http://git.yoctoproject.org/cgit/cgit.cgi</a>. | ||
19 | This web-based source code browser is organized into categories by | ||
20 | function such as IDE Plugins, Matchbox, Poky, Yocto Linux Kernel, and | ||
21 | so forth. | ||
22 | From the interface, you can click on any particular item in the "Name" | ||
23 | column and see the URL at the bottom of the page that you need to clone | ||
24 | a Git repository for that particular item. | ||
25 | Having a local Git repository of the | ||
26 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a>, | ||
27 | which is usually named "poky", allows | ||
28 | you to make changes, contribute to the history, and ultimately enhance | ||
29 | the Yocto Project's tools, Board Support Packages, and so forth. | ||
30 | </p> | ||
31 | <p> | ||
32 | For any supported release of Yocto Project, you can also go to the | ||
33 | <a class="ulink" href="http://www.yoctoproject.org" target="_self">Yocto Project Website</a> and | ||
34 | select the "Downloads" tab and get a released tarball of the | ||
35 | <code class="filename">poky</code> repository or any supported BSP tarballs. | ||
36 | Unpacking these tarballs gives you a snapshot of the released | ||
37 | files. | ||
38 | </p> | ||
39 | <div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
40 | <h3 class="title">Notes</h3> | ||
41 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
42 | <li class="listitem"><p> | ||
43 | The recommended method for setting up the Yocto Project | ||
44 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a> | ||
45 | and the files for supported BSPs | ||
46 | (e.g., <code class="filename">meta-intel</code>) is to use | ||
47 | <a class="link" href="git.html" title="2.4. Git">Git</a> to create a local copy of | ||
48 | the upstream repositories. | ||
49 | </p></li> | ||
50 | <li class="listitem"><p> | ||
51 | Be sure to always work in matching branches for both | ||
52 | the selected BSP repository and the | ||
53 | <a class="link" href="../ref-manual/source-directory.html" target="_self">Source Directory</a> | ||
54 | (i.e. <code class="filename">poky</code>) repository. | ||
55 | For example, if you have checked out the "master" branch | ||
56 | of <code class="filename">poky</code> and you are going to use | ||
57 | <code class="filename">meta-intel</code>, be sure to checkout the | ||
58 | "master" branch of <code class="filename">meta-intel</code>. | ||
59 | </p></li> | ||
60 | </ul></div> | ||
61 | </div> | ||
62 | <p> | ||
63 | </p> | ||
64 | <p> | ||
65 | In summary, here is where you can get the project files needed for | ||
66 | development: | ||
67 | </p> | ||
68 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
69 | <li class="listitem"> | ||
70 | <p><a name="source-repositories"></a> | ||
71 | <span class="emphasis"><em> | ||
72 | <a class="ulink" href="http://git.yoctoproject.org/cgit/cgit.cgi" target="_self">Source Repositories:</a> | ||
73 | </em></span> | ||
74 | This area contains IDE Plugins, Matchbox, Poky, Poky Support, | ||
75 | Tools, Yocto Linux Kernel, and Yocto Metadata Layers. | ||
76 | You can create local copies of Git repositories for each of | ||
77 | these areas.</p> | ||
78 | <p> | ||
79 | </p> | ||
80 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 360px"><td align="center"><img src="figures/source-repos.png" align="middle" width="540"></td></tr></table> | ||
81 | <p> | ||
82 | For steps on how to view and access these upstream Git | ||
83 | repositories, see the | ||
84 | "<a class="link" href="../dev-manual/accessing-source-repositories.html" target="_self">Accessing Source Repositories</a>" | ||
85 | Section in the Yocto Project Development Tasks Manual. | ||
86 | </p> | ||
87 | </li> | ||
88 | <li class="listitem"> | ||
89 | <p><a name="index-downloads"></a> | ||
90 | <span class="emphasis"><em> | ||
91 | <a class="ulink" href="http://downloads.yoctoproject.org/releases/" target="_self">Index of /releases:</a> | ||
92 | </em></span> | ||
93 | This is an index of releases such as | ||
94 | the <span class="trademark">Eclipse</span>™ | ||
95 | Yocto Plug-in, miscellaneous support, Poky, Pseudo, installers | ||
96 | for cross-development toolchains, and all released versions of | ||
97 | Yocto Project in the form of images or tarballs. | ||
98 | Downloading and extracting these files does not produce a local | ||
99 | copy of the Git repository but rather a snapshot of a | ||
100 | particular release or image.</p> | ||
101 | <p> | ||
102 | </p> | ||
103 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 315px"><td align="center"><img src="figures/index-downloads.png" align="middle" height="315"></td></tr></table> | ||
104 | <p> | ||
105 | For steps on how to view and access these files, see the | ||
106 | "<a class="link" href="../dev-manual/accessing-index-of-releases.html" target="_self">Accessing Index of Releases</a>" | ||
107 | section in the Yocto Project Development Tasks Manual. | ||
108 | </p> | ||
109 | </li> | ||
110 | <li class="listitem"> | ||
111 | <p><a name="downloads-page"></a> | ||
112 | <span class="emphasis"><em>"Downloads" page for the | ||
113 | <a class="ulink" href="http://www.yoctoproject.org" target="_self">Yocto Project Website</a>: | ||
114 | </em></span></p> | ||
115 | <p class="writernotes">This section will change due to | ||
116 | reworking of the YP Website.</p> | ||
117 | <p>The Yocto Project website includes a "Downloads" tab | ||
118 | that allows you to download any Yocto Project | ||
119 | release and Board Support Package (BSP) in tarball form. | ||
120 | The tarballs are similar to those found in the | ||
121 | <a class="ulink" href="http://downloads.yoctoproject.org/releases/" target="_self">Index of /releases:</a> area.</p> | ||
122 | <p> | ||
123 | </p> | ||
124 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 360px"><td align="center"><img src="figures/yp-download.png" align="middle" width="540"></td></tr></table> | ||
125 | <p> | ||
126 | For steps on how to use the "Downloads" page, see the | ||
127 | "<a class="link" href="../dev-manual/using-the-downloads-page.html" target="_self">Using the Downloads Page</a>" | ||
128 | section in the Yocto Project Development Tasks Manual. | ||
129 | </p> | ||
130 | </li> | ||
131 | </ul></div> | ||
132 | <p> | ||
133 | </p> | ||
134 | </div></body> | ||
135 | </html> | ||
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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>2.1. Introduction</title> | ||
5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
8 | <link rel="up" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
9 | <link rel="prev" href="overview-development-environment.html" title="Chapter 2. The Yocto Project Development Environment"> | ||
10 | <link rel="next" href="open-source-philosophy.html" title="2.2. Open Source Philosophy"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.1. Introduction"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="yp-intro"></a>2.1. Introduction</h2></div></div></div> | ||
15 | <p> | ||
16 | The Yocto Project is an open-source collaboration project whose | ||
17 | focus is for developers of embedded Linux systems. | ||
18 | Among other things, the Yocto Project uses an | ||
19 | <a class="link" href="../ref-manual/build-system-term.html" target="_self">OpenEmbedded build system</a>. | ||
20 | The build system, which is based on the OpenEmbedded (OE) project and | ||
21 | uses the | ||
22 | <a class="link" href="../ref-manual/bitbake-term.html" target="_self">BitBake</a> tool, | ||
23 | constructs complete Linux images for architectures based on ARM, MIPS, | ||
24 | PowerPC, x86 and x86-64. | ||
25 | </p> | ||
26 | <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> | ||
27 | <h3 class="title">Note</h3> | ||
28 | Historically, the OpenEmbedded build system, which is the | ||
29 | combination of BitBake and OE components, formed a reference | ||
30 | build host that was known as | ||
31 | "<a class="link" href="../ref-manual/poky.html" target="_self">Poky</a>" | ||
32 | (<span class="emphasis"><em>Pah</em></span>-kee). | ||
33 | The term "Poky", as used throughout the Yocto Project Documentation | ||
34 | set, can have different meanings. | ||
35 | </div> | ||
36 | <p> | ||
37 | The Yocto Project provides various ancillary tools for the embedded | ||
38 | developer and also features the Sato reference User Interface, which | ||
39 | is optimized for stylus-driven, low-resolution screens. | ||
40 | </p> | ||
41 | <div class="mediaobject" align="center"><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr><td align="center"><img src="figures/YP-flow-diagram.png" align="middle" width="720"></td></tr></table></div> | ||
42 | <p> | ||
43 | Here are some highlights for the Yocto Project: | ||
44 | </p> | ||
45 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
46 | <li class="listitem"><p> | ||
47 | Provides a recent Linux kernel along with a set of system | ||
48 | commands and libraries suitable for the embedded | ||
49 | environment. | ||
50 | </p></li> | ||
51 | <li class="listitem"><p> | ||
52 | Makes available system components such as X11, GTK+, Qt, | ||
53 | Clutter, and SDL (among others) so you can create a rich user | ||
54 | experience on devices that have display hardware. | ||
55 | For devices that do not have a display or where you wish to | ||
56 | use alternative UI frameworks, these components need not be | ||
57 | installed. | ||
58 | </p></li> | ||
59 | <li class="listitem"><p> | ||
60 | Creates a focused and stable core compatible with the | ||
61 | OpenEmbedded project with which you can easily and reliably | ||
62 | build and develop. | ||
63 | </p></li> | ||
64 | <li class="listitem"><p> | ||
65 | Fully supports a wide range of hardware and device emulation | ||
66 | through the Quick EMUlator (QEMU). | ||
67 | </p></li> | ||
68 | <li class="listitem"><p> | ||
69 | Provides a layer mechanism that allows you to easily extend | ||
70 | the system, make customizations, and keep them organized. | ||
71 | </p></li> | ||
72 | </ul></div> | ||
73 | <p> | ||
74 | You can use the Yocto Project to generate images for many kinds | ||
75 | of devices. | ||
76 | As mentioned earlier, the Yocto Project supports creation of | ||
77 | reference images that you can boot within and emulate using QEMU. | ||
78 | The standard example machines target QEMU full-system | ||
79 | emulation for 32-bit and 64-bit variants of x86, ARM, MIPS, and | ||
80 | PowerPC architectures. | ||
81 | Beyond emulation, you can use the layer mechanism to extend | ||
82 | support to just about any platform that Linux can run on and that | ||
83 | a toolchain can target. | ||
84 | </p> | ||
85 | <p> | ||
86 | Another Yocto Project feature is the Sato reference User | ||
87 | Interface. | ||
88 | This optional UI that is based on GTK+ is intended for devices with | ||
89 | restricted screen sizes and is included as part of the | ||
90 | OpenEmbedded Core layer so that developers can test parts of the | ||
91 | software stack. | ||
92 | </p> | ||
93 | <p> | ||
94 | While the Yocto Project does not provide a strict testing framework, | ||
95 | it does provide or generate for you artifacts that let you perform | ||
96 | target-level and emulated testing and debugging. | ||
97 | Additionally, if you are an | ||
98 | <span class="trademark">Eclipse</span>™ IDE user, you can | ||
99 | install an Eclipse Yocto Plug-in to allow you to develop within that | ||
100 | familiar environment. | ||
101 | </p> | ||
102 | <p> | ||
103 | By default, using the Yocto Project to build an image creates a Poky | ||
104 | distribution. | ||
105 | However, you can create your own distribution by providing key | ||
106 | <a class="link" href="../ref-manual/metadata.html" target="_self">Metadata</a>. | ||
107 | A good example is Angstrom, which has had a distribution | ||
108 | based on the Yocto Project since its inception. | ||
109 | Other examples include commercial distributions like | ||
110 | <a class="ulink" href="https://www.yoctoproject.org/organization/wind-river-systems" target="_self">Wind River Linux</a>, | ||
111 | <a class="ulink" href="https://www.yoctoproject.org/organization/mentor-graphics" target="_self">Mentor Embedded Linux</a>, | ||
112 | <a class="ulink" href="https://www.yoctoproject.org/organization/enea-ab" target="_self">ENEA Linux</a> | ||
113 | and <a class="ulink" href="https://www.yoctoproject.org/ecosystem/member-organizations" target="_self">others</a>. | ||
114 | See the "<a class="link" href="../dev-manual/creating-your-own-distribution.html" target="_self">Creating Your Own Distribution</a>" | ||
115 | section in the Yocto Project Development Tasks Manual for more | ||
116 | information. | ||
117 | </p> | ||
118 | </div></body> | ||
119 | </html> | ||
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1 | <?xml version="1.0" encoding="UTF-8"?> | ||
2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Getting Started With Yocto Project</title><link rel="stylesheet" type="text/css" href="getting-started-style.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /></head><body><div xml:lang="en" class="book" title="Getting Started With Yocto Project" id="getting-started-manual" lang="en"><div class="titlepage"><div><div><h1 class="title"> | ||
3 | Getting Started With Yocto Project | ||
4 | </h1></div><div><div class="authorgroup"> | ||
5 | <div class="author"><h3 class="author"><span class="firstname">Scott</span> <span class="surname">Rifenbark</span></h3><div class="affiliation"> | ||
6 | <span class="orgname">Scotty's Documentation Services, INC<br /></span> | ||
7 | </div><code class="email"><<a class="email" href="mailto:srifenbark@gmail.com">srifenbark@gmail.com</a>></code></div> | ||
8 | </div></div><div><p class="copyright">Copyright © 2010-2018 Linux Foundation</p></div><div><div class="legalnotice" title="Legal Notice"><a id="idm45705112624512"></a> | ||
9 | <p> | ||
10 | Permission is granted to copy, distribute and/or modify this document under | ||
11 | the terms of the <a class="ulink" href="http://creativecommons.org/licenses/by-sa/2.0/uk/" target="_top"> | ||
12 | Creative Commons Attribution-Share Alike 2.0 UK: England & Wales</a> as published by | ||
13 | Creative Commons. | ||
14 | </p> | ||
15 | <div class="note" title="Manual Notes" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Manual Notes</h3> | ||
16 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
17 | This version of the | ||
18 | <span class="emphasis"><em>Yocto Project Overview Manual</em></span> | ||
19 | is for the 2.5 release of the | ||
20 | Yocto Project. | ||
21 | To be sure you have the latest version of the manual | ||
22 | for this release, use the manual from the | ||
23 | <a class="ulink" href="http://www.yoctoproject.org/documentation" target="_top">Yocto Project documentation page</a>. | ||
24 | </p></li><li class="listitem"><p> | ||
25 | For manuals associated with other releases of the Yocto | ||
26 | Project, go to the | ||
27 | <a class="ulink" href="http://www.yoctoproject.org/documentation" target="_top">Yocto Project documentation page</a> | ||
28 | and use the drop-down "Active Releases" button | ||
29 | and choose the manual associated with the desired | ||
30 | Yocto Project. | ||
31 | </p></li><li class="listitem"><p> | ||
32 | To report any inaccuracies or problems with this | ||
33 | manual, send an email to the Yocto Project | ||
34 | discussion group at | ||
35 | <code class="filename">yocto@yoctoproject.com</code> or log into | ||
36 | the freenode <code class="filename">#yocto</code> channel. | ||
37 | </p></li></ul></div> | ||
38 | </div> | ||
39 | </div></div><div><div class="revhistory"><table border="1" width="100%" summary="Revision history"><tr><th align="left" valign="top" colspan="2"><strong>Revision History</strong></th></tr> | ||
40 | <tr><td align="left">Revision 2.5</td><td align="left">April 2018</td></tr><tr><td align="left" colspan="2">The initial document released with the Yocto Project 2.5 Release.</td></tr> | ||
41 | </table></div></div></div><hr /></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="chapter"><a href="#overview-manual-intro">1. The Yocto Project Overview Manual</a></span></dt><dd><dl><dt><span class="section"><a href="#overview-welcome">1.1. Welcome</a></span></dt><dt><span class="section"><a href="#overview-other-information">1.2. Other Information</a></span></dt></dl></dd><dt><span class="chapter"><a href="#overview-development-environment">2. The Yocto Project Development Environment</a></span></dt><dd><dl><dt><span class="section"><a href="#yp-intro">2.1. Introduction</a></span></dt><dt><span class="section"><a href="#open-source-philosophy">2.2. Open Source Philosophy</a></span></dt><dt><span class="section"><a href="#workflows">2.3. Workflows</a></span></dt><dt><span class="section"><a href="#git">2.4. Git</a></span></dt><dd><dl><dt><span class="section"><a href="#repositories-tags-and-branches">2.4.1. Repositories, Tags, and Branches</a></span></dt><dt><span class="section"><a href="#basic-commands">2.4.2. Basic Commands</a></span></dt></dl></dd><dt><span class="section"><a href="#yocto-project-repositories">2.5. Yocto Project Source Repositories</a></span></dt><dt><span class="section"><a href="#licensing">2.6. Licensing</a></span></dt><dt><span class="section"><a href="#recipe-syntax">2.7. Recipe Syntax</a></span></dt><dt><span class="section"><a href="#development-concepts">2.8. Development Concepts</a></span></dt><dd><dl><dt><span class="section"><a href="#user-configuration">2.8.1. User Configuration</a></span></dt><dt><span class="section"><a href="#metadata-machine-configuration-and-policy-configuration">2.8.2. Metadata, Machine Configuration, and Policy Configuration</a></span></dt><dt><span class="section"><a href="#sources-dev-environment">2.8.3. Sources</a></span></dt><dt><span class="section"><a href="#package-feeds-dev-environment">2.8.4. Package Feeds</a></span></dt><dt><span class="section"><a href="#bitbake-dev-environment">2.8.5. BitBake</a></span></dt><dt><span class="section"><a href="#images-dev-environment">2.8.6. Images</a></span></dt><dt><span class="section"><a href="#sdk-dev-environment">2.8.7. Application Development SDK</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="#overview-concepts">3. Yocto Project Concepts</a></span></dt><dd><dl><dt><span class="section"><a href="#yocto-project-components">3.1. Yocto Project Components</a></span></dt><dd><dl><dt><span class="section"><a href="#usingpoky-components-bitbake">3.1.1. BitBake</a></span></dt><dt><span class="section"><a href="#usingpoky-components-metadata">3.1.2. Metadata (Recipes)</a></span></dt><dt><span class="section"><a href="#metadata-virtual-providers">3.1.3. Metadata (Virtual Providers)</a></span></dt><dt><span class="section"><a href="#usingpoky-components-classes">3.1.4. Classes</a></span></dt><dt><span class="section"><a href="#usingpoky-components-configuration">3.1.5. Configuration</a></span></dt></dl></dd><dt><span class="section"><a href="#cross-development-toolchain-generation">3.2. Cross-Development Toolchain Generation</a></span></dt><dt><span class="section"><a href="#shared-state-cache">3.3. Shared State Cache</a></span></dt><dd><dl><dt><span class="section"><a href="#overall-architecture">3.3.1. Overall Architecture</a></span></dt><dt><span class="section"><a href="#overview-checksums">3.3.2. Checksums (Signatures)</a></span></dt><dt><span class="section"><a href="#shared-state">3.3.3. Shared State</a></span></dt><dt><span class="section"><a href="#tips-and-tricks">3.3.4. Tips and Tricks</a></span></dt></dl></dd><dt><span class="section"><a href="#automatically-added-runtime-dependencies">3.4. Automatically Added Runtime Dependencies</a></span></dt><dt><span class="section"><a href="#fakeroot-and-pseudo">3.5. Fakeroot and Pseudo</a></span></dt><dt><span class="section"><a href="#wayland">3.6. Wayland</a></span></dt><dd><dl><dt><span class="section"><a href="#wayland-support">3.6.1. Support</a></span></dt><dt><span class="section"><a href="#enabling-wayland-in-an-image">3.6.2. Enabling Wayland in an Image</a></span></dt><dt><span class="section"><a href="#running-weston">3.6.3. Running Weston</a></span></dt></dl></dd><dt><span class="section"><a href="#overview-licenses">3.7. Licenses</a></span></dt><dd><dl><dt><span class="section"><a href="#usingpoky-configuring-LIC_FILES_CHKSUM">3.7.1. Tracking License Changes</a></span></dt><dt><span class="section"><a href="#enabling-commercially-licensed-recipes">3.7.2. Enabling Commercially Licensed Recipes</a></span></dt></dl></dd><dt><span class="section"><a href="#x32">3.8. x32 psABI</a></span></dt></dl></dd></dl></div> | ||
42 | |||
43 | |||
44 | <div class="chapter" title="Chapter 1. The Yocto Project Overview Manual" id="overview-manual-intro"><div class="titlepage"><div><div><h2 class="title">Chapter 1. The Yocto Project Overview Manual<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-manual-intro">¶</a></span></h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="#overview-welcome">1.1. Welcome</a></span></dt><dt><span class="section"><a href="#overview-other-information">1.2. Other Information</a></span></dt></dl></div><div class="section" title="1.1. Welcome"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="overview-welcome">1.1. Welcome<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-welcome">¶</a></span></h2></div></div></div><p> | ||
45 | Welcome to the Yocto Project Overview Manual! | ||
46 | This manual introduces the Yocto Project by providing concepts, | ||
47 | software overviews, best-known-methods (BKMs), and any other | ||
48 | high-level introductory information suitable for a new Yocto | ||
49 | Project user. | ||
50 | </p><p> | ||
51 | The following list describes what you can get from this manual: | ||
52 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
53 | <span class="emphasis"><em>Major Topic:</em></span> | ||
54 | Provide a high-level description of this major topic. | ||
55 | </p></li><li class="listitem"><p> | ||
56 | <span class="emphasis"><em>Major Topic:</em></span> | ||
57 | Provide a high-level description of this major topic. | ||
58 | </p></li><li class="listitem"><p> | ||
59 | <span class="emphasis"><em>Major Topic:</em></span> | ||
60 | Provide a high-level description of this major topic. | ||
61 | </p></li><li class="listitem"><p> | ||
62 | <span class="emphasis"><em>Major Topic:</em></span> | ||
63 | Provide a high-level description of this major topic. | ||
64 | </p></li></ul></div><p> | ||
65 | </p><p> | ||
66 | This manual does not give you the following: | ||
67 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
68 | <span class="emphasis"><em>Step-by-step Instructions for Development Tasks:</em></span> | ||
69 | Instructional procedures reside in other manuals within | ||
70 | the Yocto Project documentation set. | ||
71 | For example, the | ||
72 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html" target="_top">Yocto Project Development Tasks Manual</a> | ||
73 | provides examples on how to perform various development | ||
74 | tasks. | ||
75 | As another example, the | ||
76 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/sdk-manual/sdk-manual.html" target="_top">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)</a> | ||
77 | manual contains detailed instructions on how to install an | ||
78 | SDK, which is used to develop applications for target | ||
79 | hardware. | ||
80 | </p></li><li class="listitem"><p> | ||
81 | <span class="emphasis"><em>Reference Material:</em></span> | ||
82 | This type of material resides in an appropriate reference | ||
83 | manual. | ||
84 | For example, system variables are documented in the | ||
85 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html" target="_top">Yocto Project Reference Manual</a>. | ||
86 | As another example, the | ||
87 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bsp-guide/bsp-guide.html" target="_top">Yocto Project Board Support Package (BSP) Developer's Guide</a> | ||
88 | contains reference information on BSPs. | ||
89 | </p></li><li class="listitem"><p> | ||
90 | <span class="emphasis"><em>Detailed Public Information Not Specific to the | ||
91 | Yocto Project:</em></span> | ||
92 | For example, exhaustive information on how to use the | ||
93 | Source Control Manager Git is better covered with Internet | ||
94 | searches and official Git Documentation than through the | ||
95 | Yocto Project documentation. | ||
96 | </p></li></ul></div><p> | ||
97 | </p></div><div class="section" title="1.2. Other Information"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="overview-other-information">1.2. Other Information<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-other-information">¶</a></span></h2></div></div></div><p> | ||
98 | Because this manual presents information for many different | ||
99 | topics, supplemental information is recommended for full | ||
100 | comprehension. | ||
101 | For additional introductory information on the Yocto Project, see | ||
102 | the <a class="ulink" href="http://www.yoctoproject.org" target="_top">Yocto Project Website</a>. | ||
103 | You can find an introductory to using the Yocto Project by working | ||
104 | through the | ||
105 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/yocto-project-qs/yocto-project-qs.html" target="_top">Yocto Project Quick Start</a>. | ||
106 | </p><p> | ||
107 | For a comprehensive list of links and other documentation, see the | ||
108 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#resources-links-and-related-documentation" target="_top">Links and Related Documentation</a>" | ||
109 | section in the Yocto Project Reference Manual. | ||
110 | </p></div></div> | ||
111 | |||
112 | <div class="chapter" title="Chapter 2. The Yocto Project Development Environment" id="overview-development-environment"><div class="titlepage"><div><div><h2 class="title">Chapter 2. The Yocto Project Development Environment<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-development-environment">¶</a></span></h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="#yp-intro">2.1. Introduction</a></span></dt><dt><span class="section"><a href="#open-source-philosophy">2.2. Open Source Philosophy</a></span></dt><dt><span class="section"><a href="#workflows">2.3. Workflows</a></span></dt><dt><span class="section"><a href="#git">2.4. Git</a></span></dt><dd><dl><dt><span class="section"><a href="#repositories-tags-and-branches">2.4.1. Repositories, Tags, and Branches</a></span></dt><dt><span class="section"><a href="#basic-commands">2.4.2. Basic Commands</a></span></dt></dl></dd><dt><span class="section"><a href="#yocto-project-repositories">2.5. Yocto Project Source Repositories</a></span></dt><dt><span class="section"><a href="#licensing">2.6. Licensing</a></span></dt><dt><span class="section"><a href="#recipe-syntax">2.7. Recipe Syntax</a></span></dt><dt><span class="section"><a href="#development-concepts">2.8. Development Concepts</a></span></dt><dd><dl><dt><span class="section"><a href="#user-configuration">2.8.1. User Configuration</a></span></dt><dt><span class="section"><a href="#metadata-machine-configuration-and-policy-configuration">2.8.2. Metadata, Machine Configuration, and Policy Configuration</a></span></dt><dt><span class="section"><a href="#sources-dev-environment">2.8.3. Sources</a></span></dt><dt><span class="section"><a href="#package-feeds-dev-environment">2.8.4. Package Feeds</a></span></dt><dt><span class="section"><a href="#bitbake-dev-environment">2.8.5. BitBake</a></span></dt><dt><span class="section"><a href="#images-dev-environment">2.8.6. Images</a></span></dt><dt><span class="section"><a href="#sdk-dev-environment">2.8.7. Application Development SDK</a></span></dt></dl></dd></dl></div><p> | ||
113 | This chapter takes a look at the Yocto Project development | ||
114 | environment and also provides a detailed look at what goes on during | ||
115 | development in that environment. | ||
116 | The chapter provides Yocto Project Development environment concepts that | ||
117 | help you understand how work is accomplished in an open source environment, | ||
118 | which is very different as compared to work accomplished in a closed, | ||
119 | proprietary environment. | ||
120 | </p><p> | ||
121 | Specifically, this chapter addresses open source philosophy, workflows, | ||
122 | Git, source repositories, licensing, recipe syntax, and development | ||
123 | syntax. | ||
124 | </p><div class="section" title="2.1. Introduction"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="yp-intro">2.1. Introduction<span class="permalink"><a alt="Permalink" title="Permalink" href="#yp-intro">¶</a></span></h2></div></div></div><p> | ||
125 | The Yocto Project is an open-source collaboration project whose | ||
126 | focus is for developers of embedded Linux systems. | ||
127 | Among other things, the Yocto Project uses an | ||
128 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-system-term" target="_top">OpenEmbedded build system</a>. | ||
129 | The build system, which is based on the OpenEmbedded (OE) project and | ||
130 | uses the | ||
131 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#bitbake-term" target="_top">BitBake</a> tool, | ||
132 | constructs complete Linux images for architectures based on ARM, MIPS, | ||
133 | PowerPC, x86 and x86-64. | ||
134 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
135 | Historically, the OpenEmbedded build system, which is the | ||
136 | combination of BitBake and OE components, formed a reference | ||
137 | build host that was known as | ||
138 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#poky" target="_top">Poky</a>" | ||
139 | (<span class="emphasis"><em>Pah</em></span>-kee). | ||
140 | The term "Poky", as used throughout the Yocto Project Documentation | ||
141 | set, can have different meanings. | ||
142 | </div><p> | ||
143 | The Yocto Project provides various ancillary tools for the embedded | ||
144 | developer and also features the Sato reference User Interface, which | ||
145 | is optimized for stylus-driven, low-resolution screens. | ||
146 | </p><div class="mediaobject" align="center"><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr><td align="center"><img src="figures/YP-flow-diagram.png" align="middle" width="720" /></td></tr></table></div><p> | ||
147 | Here are some highlights for the Yocto Project: | ||
148 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
149 | Provides a recent Linux kernel along with a set of system | ||
150 | commands and libraries suitable for the embedded | ||
151 | environment. | ||
152 | </p></li><li class="listitem"><p> | ||
153 | Makes available system components such as X11, GTK+, Qt, | ||
154 | Clutter, and SDL (among others) so you can create a rich user | ||
155 | experience on devices that have display hardware. | ||
156 | For devices that do not have a display or where you wish to | ||
157 | use alternative UI frameworks, these components need not be | ||
158 | installed. | ||
159 | </p></li><li class="listitem"><p> | ||
160 | Creates a focused and stable core compatible with the | ||
161 | OpenEmbedded project with which you can easily and reliably | ||
162 | build and develop. | ||
163 | </p></li><li class="listitem"><p> | ||
164 | Fully supports a wide range of hardware and device emulation | ||
165 | through the Quick EMUlator (QEMU). | ||
166 | </p></li><li class="listitem"><p> | ||
167 | Provides a layer mechanism that allows you to easily extend | ||
168 | the system, make customizations, and keep them organized. | ||
169 | </p></li></ul></div><p> | ||
170 | You can use the Yocto Project to generate images for many kinds | ||
171 | of devices. | ||
172 | As mentioned earlier, the Yocto Project supports creation of | ||
173 | reference images that you can boot within and emulate using QEMU. | ||
174 | The standard example machines target QEMU full-system | ||
175 | emulation for 32-bit and 64-bit variants of x86, ARM, MIPS, and | ||
176 | PowerPC architectures. | ||
177 | Beyond emulation, you can use the layer mechanism to extend | ||
178 | support to just about any platform that Linux can run on and that | ||
179 | a toolchain can target. | ||
180 | </p><p> | ||
181 | Another Yocto Project feature is the Sato reference User | ||
182 | Interface. | ||
183 | This optional UI that is based on GTK+ is intended for devices with | ||
184 | restricted screen sizes and is included as part of the | ||
185 | OpenEmbedded Core layer so that developers can test parts of the | ||
186 | software stack. | ||
187 | </p><p> | ||
188 | While the Yocto Project does not provide a strict testing framework, | ||
189 | it does provide or generate for you artifacts that let you perform | ||
190 | target-level and emulated testing and debugging. | ||
191 | Additionally, if you are an | ||
192 | <span class="trademark">Eclipse</span>â„¢ IDE user, you can | ||
193 | install an Eclipse Yocto Plug-in to allow you to develop within that | ||
194 | familiar environment. | ||
195 | </p><p> | ||
196 | By default, using the Yocto Project to build an image creates a Poky | ||
197 | distribution. | ||
198 | However, you can create your own distribution by providing key | ||
199 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#metadata" target="_top">Metadata</a>. | ||
200 | A good example is Angstrom, which has had a distribution | ||
201 | based on the Yocto Project since its inception. | ||
202 | Other examples include commercial distributions like | ||
203 | <a class="ulink" href="https://www.yoctoproject.org/organization/wind-river-systems" target="_top">Wind River Linux</a>, | ||
204 | <a class="ulink" href="https://www.yoctoproject.org/organization/mentor-graphics" target="_top">Mentor Embedded Linux</a>, | ||
205 | <a class="ulink" href="https://www.yoctoproject.org/organization/enea-ab" target="_top">ENEA Linux</a> | ||
206 | and <a class="ulink" href="https://www.yoctoproject.org/ecosystem/member-organizations" target="_top">others</a>. | ||
207 | See the "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#creating-your-own-distribution" target="_top">Creating Your Own Distribution</a>" | ||
208 | section in the Yocto Project Development Tasks Manual for more | ||
209 | information. | ||
210 | </p></div><div class="section" title="2.2. Open Source Philosophy"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="open-source-philosophy">2.2. Open Source Philosophy<span class="permalink"><a alt="Permalink" title="Permalink" href="#open-source-philosophy">¶</a></span></h2></div></div></div><p> | ||
211 | Open source philosophy is characterized by software development | ||
212 | directed by peer production and collaboration through an active | ||
213 | community of developers. | ||
214 | Contrast this to the more standard centralized development models | ||
215 | used by commercial software companies where a finite set of developers | ||
216 | produces a product for sale using a defined set of procedures that | ||
217 | ultimately result in an end product whose architecture and source | ||
218 | material are closed to the public. | ||
219 | </p><p> | ||
220 | Open source projects conceptually have differing concurrent agendas, | ||
221 | approaches, and production. | ||
222 | These facets of the development process can come from anyone in the | ||
223 | public (community) that has a stake in the software project. | ||
224 | The open source environment contains new copyright, licensing, domain, | ||
225 | and consumer issues that differ from the more traditional development | ||
226 | environment. | ||
227 | In an open source environment, the end product, source material, | ||
228 | and documentation are all available to the public at no cost. | ||
229 | </p><p> | ||
230 | A benchmark example of an open source project is the Linux kernel, | ||
231 | which was initially conceived and created by Finnish computer science | ||
232 | student Linus Torvalds in 1991. | ||
233 | Conversely, a good example of a non-open source project is the | ||
234 | <span class="trademark">Windows</span>® family of operating | ||
235 | systems developed by | ||
236 | <span class="trademark">Microsoft</span>® Corporation. | ||
237 | </p><p> | ||
238 | Wikipedia has a good historical description of the Open Source | ||
239 | Philosophy | ||
240 | <a class="ulink" href="http://en.wikipedia.org/wiki/Open_source" target="_top">here</a>. | ||
241 | You can also find helpful information on how to participate in the | ||
242 | Linux Community | ||
243 | <a class="ulink" href="http://ldn.linuxfoundation.org/book/how-participate-linux-community" target="_top">here</a>. | ||
244 | </p></div><div class="section" title="2.3. Workflows"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="workflows">2.3. Workflows<span class="permalink"><a alt="Permalink" title="Permalink" href="#workflows">¶</a></span></h2></div></div></div><p> | ||
245 | This section provides workflow concepts using the Yocto Project and | ||
246 | Git. | ||
247 | In particular, the information covers basic practices that describe | ||
248 | roles and actions in a collaborative development environment. | ||
249 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
250 | If you are familiar with this type of development environment, you | ||
251 | might not want to read this section. | ||
252 | </div><p> | ||
253 | </p><p> | ||
254 | The Yocto Project files are maintained using Git in "master" | ||
255 | branches whose Git histories track every change and whose structures | ||
256 | provides branches for all diverging functionality. | ||
257 | Although there is no need to use Git, many open source projects do so. | ||
258 | </p><p> | ||
259 | |||
260 | </p><p> | ||
261 | For the Yocto Project, a key individual called the "maintainer" is | ||
262 | responsible for the "master" branch of a given Git repository. | ||
263 | The "master" branch is the “upstream†repository from which final or | ||
264 | most recent builds of the project occur. | ||
265 | The maintainer is responsible for accepting changes from other | ||
266 | developers and for organizing the underlying branch structure to | ||
267 | reflect release strategies and so forth. | ||
268 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>For information on finding out who is responsible for (maintains) | ||
269 | a particular area of code, see the | ||
270 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#how-to-submit-a-change" target="_top">Submitting a Change to the Yocto Project</a>" | ||
271 | section of the Yocto Project Development Tasks Manual. | ||
272 | </div><p> | ||
273 | </p><p> | ||
274 | The Yocto Project <code class="filename">poky</code> Git repository also has an | ||
275 | upstream contribution Git repository named | ||
276 | <code class="filename">poky-contrib</code>. | ||
277 | You can see all the branches in this repository using the web interface | ||
278 | of the | ||
279 | <a class="ulink" href="http://git.yoctoproject.org" target="_top">Source Repositories</a> organized | ||
280 | within the "Poky Support" area. | ||
281 | These branches temporarily hold changes to the project that have been | ||
282 | submitted or committed by the Yocto Project development team and by | ||
283 | community members who contribute to the project. | ||
284 | The maintainer determines if the changes are qualified to be moved | ||
285 | from the "contrib" branches into the "master" branch of the Git | ||
286 | repository. | ||
287 | </p><p> | ||
288 | Developers (including contributing community members) create and | ||
289 | maintain cloned repositories of the upstream "master" branch. | ||
290 | The cloned repositories are local to their development platforms and | ||
291 | are used to develop changes. | ||
292 | When a developer is satisfied with a particular feature or change, | ||
293 | they "push" the changes to the appropriate "contrib" repository. | ||
294 | </p><p> | ||
295 | Developers are responsible for keeping their local repository | ||
296 | up-to-date with "master". | ||
297 | They are also responsible for straightening out any conflicts that | ||
298 | might arise within files that are being worked on simultaneously by | ||
299 | more than one person. | ||
300 | All this work is done locally on the developer’s machine before | ||
301 | anything is pushed to a "contrib" area and examined at the maintainer’s | ||
302 | level. | ||
303 | </p><p> | ||
304 | A somewhat formal method exists by which developers commit changes | ||
305 | and push them into the "contrib" area and subsequently request that | ||
306 | the maintainer include them into "master". | ||
307 | This process is called “submitting a patch†or "submitting a change." | ||
308 | For information on submitting patches and changes, see the | ||
309 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#how-to-submit-a-change" target="_top">Submitting a Change to the Yocto Project</a>" | ||
310 | section in the Yocto Project Development Tasks Manual. | ||
311 | </p><p> | ||
312 | To summarize the development workflow: a single point of entry | ||
313 | exists for changes into the project’s "master" branch of the | ||
314 | Git repository, which is controlled by the project’s maintainer. | ||
315 | And, a set of developers exist who independently develop, test, and | ||
316 | submit changes to "contrib" areas for the maintainer to examine. | ||
317 | The maintainer then chooses which changes are going to become a | ||
318 | permanent part of the project. | ||
319 | </p><p> | ||
320 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 270px"><td align="left"><img src="figures/git-workflow.png" align="left" height="270" /></td></tr></table><p> | ||
321 | </p><p> | ||
322 | While each development environment is unique, there are some best | ||
323 | practices or methods that help development run smoothly. | ||
324 | The following list describes some of these practices. | ||
325 | For more information about Git workflows, see the workflow topics in | ||
326 | the | ||
327 | <a class="ulink" href="http://book.git-scm.com" target="_top">Git Community Book</a>. | ||
328 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
329 | <span class="emphasis"><em>Make Small Changes:</em></span> | ||
330 | It is best to keep the changes you commit small as compared to | ||
331 | bundling many disparate changes into a single commit. | ||
332 | This practice not only keeps things manageable but also allows | ||
333 | the maintainer to more easily include or refuse changes.</p><p>It is also good practice to leave the repository in a | ||
334 | state that allows you to still successfully build your project. | ||
335 | In other words, do not commit half of a feature, | ||
336 | then add the other half as a separate, later commit. | ||
337 | Each commit should take you from one buildable project state | ||
338 | to another buildable state. | ||
339 | </p></li><li class="listitem"><p> | ||
340 | <span class="emphasis"><em>Use Branches Liberally:</em></span> | ||
341 | It is very easy to create, use, and delete local branches in | ||
342 | your working Git repository. | ||
343 | You can name these branches anything you like. | ||
344 | It is helpful to give them names associated with the particular | ||
345 | feature or change on which you are working. | ||
346 | Once you are done with a feature or change and have merged it | ||
347 | into your local master branch, simply discard the temporary | ||
348 | branch. | ||
349 | </p></li><li class="listitem"><p> | ||
350 | <span class="emphasis"><em>Merge Changes:</em></span> | ||
351 | The <code class="filename">git merge</code> command allows you to take | ||
352 | the changes from one branch and fold them into another branch. | ||
353 | This process is especially helpful when more than a single | ||
354 | developer might be working on different parts of the same | ||
355 | feature. | ||
356 | Merging changes also automatically identifies any collisions | ||
357 | or "conflicts" that might happen as a result of the same lines | ||
358 | of code being altered by two different developers. | ||
359 | </p></li><li class="listitem"><p> | ||
360 | <span class="emphasis"><em>Manage Branches:</em></span> | ||
361 | Because branches are easy to use, you should use a system | ||
362 | where branches indicate varying levels of code readiness. | ||
363 | For example, you can have a "work" branch to develop in, a | ||
364 | "test" branch where the code or change is tested, a "stage" | ||
365 | branch where changes are ready to be committed, and so forth. | ||
366 | As your project develops, you can merge code across the | ||
367 | branches to reflect ever-increasing stable states of the | ||
368 | development. | ||
369 | </p></li><li class="listitem"><p> | ||
370 | <span class="emphasis"><em>Use Push and Pull:</em></span> | ||
371 | The push-pull workflow is based on the concept of developers | ||
372 | "pushing" local commits to a remote repository, which is | ||
373 | usually a contribution repository. | ||
374 | This workflow is also based on developers "pulling" known | ||
375 | states of the project down into their local development | ||
376 | repositories. | ||
377 | The workflow easily allows you to pull changes submitted by | ||
378 | other developers from the upstream repository into your | ||
379 | work area ensuring that you have the most recent software | ||
380 | on which to develop. | ||
381 | The Yocto Project has two scripts named | ||
382 | <code class="filename">create-pull-request</code> and | ||
383 | <code class="filename">send-pull-request</code> that ship with the | ||
384 | release to facilitate this workflow. | ||
385 | You can find these scripts in the <code class="filename">scripts</code> | ||
386 | folder of the | ||
387 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a>. | ||
388 | For information on how to use these scripts, see the | ||
389 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#pushing-a-change-upstream" target="_top">Using Scripts to Push a Change Upstream and Request a Pull</a>" | ||
390 | section in the Yocto Project Development Tasks Manual. | ||
391 | </p></li><li class="listitem"><p> | ||
392 | <span class="emphasis"><em>Patch Workflow:</em></span> | ||
393 | This workflow allows you to notify the maintainer through an | ||
394 | email that you have a change (or patch) you would like | ||
395 | considered for the "master" branch of the Git repository. | ||
396 | To send this type of change, you format the patch and then | ||
397 | send the email using the Git commands | ||
398 | <code class="filename">git format-patch</code> and | ||
399 | <code class="filename">git send-email</code>. | ||
400 | For information on how to use these scripts, see the | ||
401 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#how-to-submit-a-change" target="_top">Submitting a Change to the Yocto Project</a>" | ||
402 | section in the Yocto Project Development Tasks Manual. | ||
403 | </p></li></ul></div><p> | ||
404 | </p></div><div class="section" title="2.4. Git"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="git">2.4. Git<span class="permalink"><a alt="Permalink" title="Permalink" href="#git">¶</a></span></h2></div></div></div><p> | ||
405 | The Yocto Project makes extensive use of Git, which is a | ||
406 | free, open source distributed version control system. | ||
407 | Git supports distributed development, non-linear development, | ||
408 | and can handle large projects. | ||
409 | It is best that you have some fundamental understanding | ||
410 | of how Git tracks projects and how to work with Git if | ||
411 | you are going to use the Yocto Project for development. | ||
412 | This section provides a quick overview of how Git works and | ||
413 | provides you with a summary of some essential Git commands. | ||
414 | </p><div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Notes</h3><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
415 | For more information on Git, see | ||
416 | <a class="ulink" href="http://git-scm.com/documentation" target="_top">http://git-scm.com/documentation</a>. | ||
417 | </p></li><li class="listitem"><p> | ||
418 | If you need to download Git, it is recommended that you add | ||
419 | Git to your system through your distribution's "software | ||
420 | store" (e.g. for Ubuntu, use the Ubuntu Software feature). | ||
421 | For the Git download page, see | ||
422 | <a class="ulink" href="http://git-scm.com/download" target="_top">http://git-scm.com/download</a>. | ||
423 | </p></li><li class="listitem"><p> | ||
424 | For examples beyond the limited few in this section on how | ||
425 | to use Git with the Yocto Project, see the | ||
426 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#working-with-yocto-project-source-files" target="_top">Working With Yocto Project Source Files</a>" | ||
427 | section in the Yocto Project Development Tasks Manual. | ||
428 | </p></li></ul></div></div><p> | ||
429 | </p><div class="section" title="2.4.1. Repositories, Tags, and Branches"><div class="titlepage"><div><div><h3 class="title" id="repositories-tags-and-branches">2.4.1. Repositories, Tags, and Branches<span class="permalink"><a alt="Permalink" title="Permalink" href="#repositories-tags-and-branches">¶</a></span></h3></div></div></div><p> | ||
430 | As mentioned briefly in the previous section and also in the | ||
431 | "<a class="link" href="#workflows" title="2.3. Workflows">Workflows</a>" section, | ||
432 | the Yocto Project maintains source repositories at | ||
433 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi" target="_top">http://git.yoctoproject.org/cgit.cgi</a>. | ||
434 | If you look at this web-interface of the repositories, each item | ||
435 | is a separate Git repository. | ||
436 | </p><p> | ||
437 | Git repositories use branching techniques that track content | ||
438 | change (not files) within a project (e.g. a new feature or updated | ||
439 | documentation). | ||
440 | Creating a tree-like structure based on project divergence allows | ||
441 | for excellent historical information over the life of a project. | ||
442 | This methodology also allows for an environment from which you can | ||
443 | do lots of local experimentation on projects as you develop | ||
444 | changes or new features. | ||
445 | </p><p> | ||
446 | A Git repository represents all development efforts for a given | ||
447 | project. | ||
448 | For example, the Git repository <code class="filename">poky</code> contains | ||
449 | all changes and developments for Poky over the course of its | ||
450 | entire life. | ||
451 | That means that all changes that make up all releases are captured. | ||
452 | The repository maintains a complete history of changes. | ||
453 | </p><p> | ||
454 | You can create a local copy of any repository by "cloning" it | ||
455 | with the <code class="filename">git clone</code> command. | ||
456 | When you clone a Git repository, you end up with an identical | ||
457 | copy of the repository on your development system. | ||
458 | Once you have a local copy of a repository, you can take steps to | ||
459 | develop locally. | ||
460 | For examples on how to clone Git repositories, see the | ||
461 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#working-with-yocto-project-source-files" target="_top">Working With Yocto Project Source Files</a>" | ||
462 | section in the Yocto Project Development Tasks Manual. | ||
463 | </p><p> | ||
464 | It is important to understand that Git tracks content change and | ||
465 | not files. | ||
466 | Git uses "branches" to organize different development efforts. | ||
467 | For example, the <code class="filename">poky</code> repository has | ||
468 | several branches that include the current "sumo" | ||
469 | branch, the "master" branch, and many branches for past | ||
470 | Yocto Project releases. | ||
471 | You can see all the branches by going to | ||
472 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/" target="_top">http://git.yoctoproject.org/cgit.cgi/poky/</a> and | ||
473 | clicking on the | ||
474 | <code class="filename"><a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/refs/heads" target="_top">[...]</a></code> | ||
475 | link beneath the "Branch" heading. | ||
476 | </p><p> | ||
477 | Each of these branches represents a specific area of development. | ||
478 | The "master" branch represents the current or most recent | ||
479 | development. | ||
480 | All other branches represent offshoots of the "master" branch. | ||
481 | </p><p> | ||
482 | When you create a local copy of a Git repository, the copy has | ||
483 | the same set of branches as the original. | ||
484 | This means you can use Git to create a local working area | ||
485 | (also called a branch) that tracks a specific development branch | ||
486 | from the upstream source Git repository. | ||
487 | in other words, you can define your local Git environment to | ||
488 | work on any development branch in the repository. | ||
489 | To help illustrate, consider the following example Git commands: | ||
490 | </p><pre class="literallayout"> | ||
491 | $ cd ~ | ||
492 | $ git clone git://git.yoctoproject.org/poky | ||
493 | $ cd poky | ||
494 | $ git checkout -b sumo origin/sumo | ||
495 | </pre><p> | ||
496 | In the previous example after moving to the home directory, the | ||
497 | <code class="filename">git clone</code> command creates a | ||
498 | local copy of the upstream <code class="filename">poky</code> Git repository. | ||
499 | By default, Git checks out the "master" branch for your work. | ||
500 | After changing the working directory to the new local repository | ||
501 | (i.e. <code class="filename">poky</code>), the | ||
502 | <code class="filename">git checkout</code> command creates | ||
503 | and checks out a local branch named "sumo", which | ||
504 | tracks the upstream "origin/sumo" branch. | ||
505 | Changes you make while in this branch would ultimately affect | ||
506 | the upstream "sumo" branch of the | ||
507 | <code class="filename">poky</code> repository. | ||
508 | </p><p> | ||
509 | It is important to understand that when you create and checkout a | ||
510 | local working branch based on a branch name, | ||
511 | your local environment matches the "tip" of that particular | ||
512 | development branch at the time you created your local branch, | ||
513 | which could be different from the files in the "master" branch | ||
514 | of the upstream repository. | ||
515 | In other words, creating and checking out a local branch based on | ||
516 | the "sumo" branch name is not the same as | ||
517 | cloning and checking out the "master" branch if the repository. | ||
518 | Keep reading to see how you create a local snapshot of a Yocto | ||
519 | Project Release. | ||
520 | </p><p> | ||
521 | Git uses "tags" to mark specific changes in a repository. | ||
522 | Typically, a tag is used to mark a special point such as the final | ||
523 | change before a project is released. | ||
524 | You can see the tags used with the <code class="filename">poky</code> Git | ||
525 | repository by going to | ||
526 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/" target="_top">http://git.yoctoproject.org/cgit.cgi/poky/</a> and | ||
527 | clicking on the | ||
528 | <code class="filename"><a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/refs/tags" target="_top">[...]</a></code> | ||
529 | link beneath the "Tag" heading. | ||
530 | </p><p> | ||
531 | Some key tags for the <code class="filename">poky</code> are | ||
532 | <code class="filename">jethro-14.0.3</code>, | ||
533 | <code class="filename">morty-16.0.1</code>, | ||
534 | <code class="filename">pyro-17.0.0</code>, and | ||
535 | <code class="filename">sumo-20.0.0</code>. | ||
536 | These tags represent Yocto Project releases. | ||
537 | </p><p> | ||
538 | When you create a local copy of the Git repository, you also | ||
539 | have access to all the tags in the upstream repository. | ||
540 | Similar to branches, you can create and checkout a local working | ||
541 | Git branch based on a tag name. | ||
542 | When you do this, you get a snapshot of the Git repository that | ||
543 | reflects the state of the files when the change was made associated | ||
544 | with that tag. | ||
545 | The most common use is to checkout a working branch that matches | ||
546 | a specific Yocto Project release. | ||
547 | Here is an example: | ||
548 | </p><pre class="literallayout"> | ||
549 | $ cd ~ | ||
550 | $ git clone git://git.yoctoproject.org/poky | ||
551 | $ cd poky | ||
552 | $ git fetch --all --tags --prune | ||
553 | $ git checkout tags/pyro-17.0.0 -b my-pyro-17.0.0 | ||
554 | </pre><p> | ||
555 | In this example, the name of the top-level directory of your | ||
556 | local Yocto Project repository is <code class="filename">poky</code>. | ||
557 | After moving to the <code class="filename">poky</code> directory, the | ||
558 | <code class="filename">git fetch</code> command makes all the upstream | ||
559 | tags available locally in your repository. | ||
560 | Finally, the <code class="filename">git checkout</code> command | ||
561 | creates and checks out a branch named "my-pyro-17.0.0" that is | ||
562 | based on the specific change upstream in the repository | ||
563 | associated with the "pyro-17.0.0" tag. | ||
564 | The files in your repository now exactly match that particular | ||
565 | Yocto Project release as it is tagged in the upstream Git | ||
566 | repository. | ||
567 | It is important to understand that when you create and | ||
568 | checkout a local working branch based on a tag, your environment | ||
569 | matches a specific point in time and not the entire development | ||
570 | branch (i.e. the "tip" of the branch). | ||
571 | </p></div><div class="section" title="2.4.2. Basic Commands"><div class="titlepage"><div><div><h3 class="title" id="basic-commands">2.4.2. Basic Commands<span class="permalink"><a alt="Permalink" title="Permalink" href="#basic-commands">¶</a></span></h3></div></div></div><p> | ||
572 | Git has an extensive set of commands that lets you manage changes | ||
573 | and perform collaboration over the life of a project. | ||
574 | Conveniently though, you can manage with a small set of basic | ||
575 | operations and workflows once you understand the basic | ||
576 | philosophy behind Git. | ||
577 | You do not have to be an expert in Git to be functional. | ||
578 | A good place to look for instruction on a minimal set of Git | ||
579 | commands is | ||
580 | <a class="ulink" href="http://git-scm.com/documentation" target="_top">here</a>. | ||
581 | </p><p> | ||
582 | If you do not know much about Git, you should educate | ||
583 | yourself by visiting the links previously mentioned. | ||
584 | </p><p> | ||
585 | The following list of Git commands briefly describes some basic | ||
586 | Git operations as a way to get started. | ||
587 | As with any set of commands, this list (in most cases) simply shows | ||
588 | the base command and omits the many arguments they support. | ||
589 | See the Git documentation for complete descriptions and strategies | ||
590 | on how to use these commands: | ||
591 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
592 | <span class="emphasis"><em><code class="filename">git init</code>:</em></span> | ||
593 | Initializes an empty Git repository. | ||
594 | You cannot use Git commands unless you have a | ||
595 | <code class="filename">.git</code> repository. | ||
596 | </p></li><li class="listitem"><p><a id="git-commands-clone"></a> | ||
597 | <span class="emphasis"><em><code class="filename">git clone</code>:</em></span> | ||
598 | Creates a local clone of a Git repository that is on | ||
599 | equal footing with a fellow developer’s Git repository | ||
600 | or an upstream repository. | ||
601 | </p></li><li class="listitem"><p> | ||
602 | <span class="emphasis"><em><code class="filename">git add</code>:</em></span> | ||
603 | Locally stages updated file contents to the index that | ||
604 | Git uses to track changes. | ||
605 | You must stage all files that have changed before you | ||
606 | can commit them. | ||
607 | </p></li><li class="listitem"><p> | ||
608 | <span class="emphasis"><em><code class="filename">git commit</code>:</em></span> | ||
609 | Creates a local "commit" that documents the changes you | ||
610 | made. | ||
611 | Only changes that have been staged can be committed. | ||
612 | Commits are used for historical purposes, for determining | ||
613 | if a maintainer of a project will allow the change, | ||
614 | and for ultimately pushing the change from your local | ||
615 | Git repository into the project’s upstream repository. | ||
616 | </p></li><li class="listitem"><p> | ||
617 | <span class="emphasis"><em><code class="filename">git status</code>:</em></span> | ||
618 | Reports any modified files that possibly need to be | ||
619 | staged and gives you a status of where you stand regarding | ||
620 | local commits as compared to the upstream repository. | ||
621 | </p></li><li class="listitem"><p> | ||
622 | <span class="emphasis"><em><code class="filename">git checkout</code> <em class="replaceable"><code>branch-name</code></em>:</em></span> | ||
623 | Changes your working branch. | ||
624 | This command is analogous to "cd". | ||
625 | </p></li><li class="listitem"><p><span class="emphasis"><em><code class="filename">git checkout –b</code> <em class="replaceable"><code>working-branch</code></em>:</em></span> | ||
626 | Creates and checks out a working branch on your local | ||
627 | machine that you can use to isolate your work. | ||
628 | It is a good idea to use local branches when adding | ||
629 | specific features or changes. | ||
630 | Using isolated branches facilitates easy removal of | ||
631 | changes if they do not work out. | ||
632 | </p></li><li class="listitem"><p><span class="emphasis"><em><code class="filename">git branch</code>:</em></span> | ||
633 | Displays the existing local branches associated with your | ||
634 | local repository. | ||
635 | The branch that you have currently checked out is noted | ||
636 | with an asterisk character. | ||
637 | </p></li><li class="listitem"><p> | ||
638 | <span class="emphasis"><em><code class="filename">git branch -D</code> <em class="replaceable"><code>branch-name</code></em>:</em></span> | ||
639 | Deletes an existing local branch. | ||
640 | You need to be in a local branch other than the one you | ||
641 | are deleting in order to delete | ||
642 | <em class="replaceable"><code>branch-name</code></em>. | ||
643 | </p></li><li class="listitem"><p> | ||
644 | <span class="emphasis"><em><code class="filename">git pull</code>:</em></span> | ||
645 | Retrieves information from an upstream Git repository | ||
646 | and places it in your local Git repository. | ||
647 | You use this command to make sure you are synchronized with | ||
648 | the repository from which you are basing changes | ||
649 | (.e.g. the "master" branch). | ||
650 | </p></li><li class="listitem"><p> | ||
651 | <span class="emphasis"><em><code class="filename">git push</code>:</em></span> | ||
652 | Sends all your committed local changes to the upstream Git | ||
653 | repository that your local repository is tracking | ||
654 | (e.g. a contribution repository). | ||
655 | The maintainer of the project draws from these repositories | ||
656 | to merge changes (commits) into the appropriate branch | ||
657 | of project's upstream repository. | ||
658 | </p></li><li class="listitem"><p> | ||
659 | <span class="emphasis"><em><code class="filename">git merge</code>:</em></span> | ||
660 | Combines or adds changes from one | ||
661 | local branch of your repository with another branch. | ||
662 | When you create a local Git repository, the default branch | ||
663 | is named "master". | ||
664 | A typical workflow is to create a temporary branch that is | ||
665 | based off "master" that you would use for isolated work. | ||
666 | You would make your changes in that isolated branch, | ||
667 | stage and commit them locally, switch to the "master" | ||
668 | branch, and then use the <code class="filename">git merge</code> | ||
669 | command to apply the changes from your isolated branch | ||
670 | into the currently checked out branch (e.g. "master"). | ||
671 | After the merge is complete and if you are done with | ||
672 | working in that isolated branch, you can safely delete | ||
673 | the isolated branch. | ||
674 | </p></li><li class="listitem"><p> | ||
675 | <span class="emphasis"><em><code class="filename">git cherry-pick</code>:</em></span> | ||
676 | Choose and apply specific commits from one branch | ||
677 | into another branch. | ||
678 | There are times when you might not be able to merge | ||
679 | all the changes in one branch with | ||
680 | another but need to pick out certain ones. | ||
681 | </p></li><li class="listitem"><p> | ||
682 | <span class="emphasis"><em><code class="filename">gitk</code>:</em></span> | ||
683 | Provides a GUI view of the branches and changes in your | ||
684 | local Git repository. | ||
685 | This command is a good way to graphically see where things | ||
686 | have diverged in your local repository. | ||
687 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
688 | You need to install the <code class="filename">gitk</code> | ||
689 | package on your development system to use this | ||
690 | command. | ||
691 | </div><p> | ||
692 | </p></li><li class="listitem"><p> | ||
693 | <span class="emphasis"><em><code class="filename">git log</code>:</em></span> | ||
694 | Reports a history of your commits to the repository. | ||
695 | This report lists all commits regardless of whether you | ||
696 | have pushed them upstream or not. | ||
697 | </p></li><li class="listitem"><p> | ||
698 | <span class="emphasis"><em><code class="filename">git diff</code>:</em></span> | ||
699 | Displays line-by-line differences between a local | ||
700 | working file and the same file as understood by Git. | ||
701 | This command is useful to see what you have changed | ||
702 | in any given file. | ||
703 | </p></li></ul></div><p> | ||
704 | </p></div></div><div class="section" title="2.5. Yocto Project Source Repositories"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="yocto-project-repositories">2.5. Yocto Project Source Repositories<span class="permalink"><a alt="Permalink" title="Permalink" href="#yocto-project-repositories">¶</a></span></h2></div></div></div><p> | ||
705 | The Yocto Project team maintains complete source repositories for all | ||
706 | Yocto Project files at | ||
707 | <a class="ulink" href="http://git.yoctoproject.org/cgit/cgit.cgi" target="_top">http://git.yoctoproject.org/cgit/cgit.cgi</a>. | ||
708 | This web-based source code browser is organized into categories by | ||
709 | function such as IDE Plugins, Matchbox, Poky, Yocto Linux Kernel, and | ||
710 | so forth. | ||
711 | From the interface, you can click on any particular item in the "Name" | ||
712 | column and see the URL at the bottom of the page that you need to clone | ||
713 | a Git repository for that particular item. | ||
714 | Having a local Git repository of the | ||
715 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a>, | ||
716 | which is usually named "poky", allows | ||
717 | you to make changes, contribute to the history, and ultimately enhance | ||
718 | the Yocto Project's tools, Board Support Packages, and so forth. | ||
719 | </p><p> | ||
720 | For any supported release of Yocto Project, you can also go to the | ||
721 | <a class="ulink" href="http://www.yoctoproject.org" target="_top">Yocto Project Website</a> and | ||
722 | select the "Downloads" tab and get a released tarball of the | ||
723 | <code class="filename">poky</code> repository or any supported BSP tarballs. | ||
724 | Unpacking these tarballs gives you a snapshot of the released | ||
725 | files. | ||
726 | </p><div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Notes</h3><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
727 | The recommended method for setting up the Yocto Project | ||
728 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a> | ||
729 | and the files for supported BSPs | ||
730 | (e.g., <code class="filename">meta-intel</code>) is to use | ||
731 | <a class="link" href="#git" title="2.4. Git">Git</a> to create a local copy of | ||
732 | the upstream repositories. | ||
733 | </p></li><li class="listitem"><p> | ||
734 | Be sure to always work in matching branches for both | ||
735 | the selected BSP repository and the | ||
736 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a> | ||
737 | (i.e. <code class="filename">poky</code>) repository. | ||
738 | For example, if you have checked out the "master" branch | ||
739 | of <code class="filename">poky</code> and you are going to use | ||
740 | <code class="filename">meta-intel</code>, be sure to checkout the | ||
741 | "master" branch of <code class="filename">meta-intel</code>. | ||
742 | </p></li></ul></div></div><p> | ||
743 | </p><p> | ||
744 | In summary, here is where you can get the project files needed for | ||
745 | development: | ||
746 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a id="source-repositories"></a> | ||
747 | <span class="emphasis"><em> | ||
748 | <a class="ulink" href="http://git.yoctoproject.org/cgit/cgit.cgi" target="_top">Source Repositories:</a> | ||
749 | </em></span> | ||
750 | This area contains IDE Plugins, Matchbox, Poky, Poky Support, | ||
751 | Tools, Yocto Linux Kernel, and Yocto Metadata Layers. | ||
752 | You can create local copies of Git repositories for each of | ||
753 | these areas.</p><p> | ||
754 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 360px"><td align="center"><img src="figures/source-repos.png" align="middle" width="540" /></td></tr></table><p> | ||
755 | For steps on how to view and access these upstream Git | ||
756 | repositories, see the | ||
757 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#accessing-source-repositories" target="_top">Accessing Source Repositories</a>" | ||
758 | Section in the Yocto Project Development Tasks Manual. | ||
759 | </p></li><li class="listitem"><p><a id="index-downloads"></a> | ||
760 | <span class="emphasis"><em> | ||
761 | <a class="ulink" href="http://downloads.yoctoproject.org/releases/" target="_top">Index of /releases:</a> | ||
762 | </em></span> | ||
763 | This is an index of releases such as | ||
764 | the <span class="trademark">Eclipse</span>â„¢ | ||
765 | Yocto Plug-in, miscellaneous support, Poky, Pseudo, installers | ||
766 | for cross-development toolchains, and all released versions of | ||
767 | Yocto Project in the form of images or tarballs. | ||
768 | Downloading and extracting these files does not produce a local | ||
769 | copy of the Git repository but rather a snapshot of a | ||
770 | particular release or image.</p><p> | ||
771 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 315px"><td align="center"><img src="figures/index-downloads.png" align="middle" height="315" /></td></tr></table><p> | ||
772 | For steps on how to view and access these files, see the | ||
773 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#accessing-index-of-releases" target="_top">Accessing Index of Releases</a>" | ||
774 | section in the Yocto Project Development Tasks Manual. | ||
775 | </p></li><li class="listitem"><p><a id="downloads-page"></a> | ||
776 | <span class="emphasis"><em>"Downloads" page for the | ||
777 | <a class="ulink" href="http://www.yoctoproject.org" target="_top">Yocto Project Website</a>: | ||
778 | </em></span></p><p class="writernotes">This section will change due to | ||
779 | reworking of the YP Website.</p><p>The Yocto Project website includes a "Downloads" tab | ||
780 | that allows you to download any Yocto Project | ||
781 | release and Board Support Package (BSP) in tarball form. | ||
782 | The tarballs are similar to those found in the | ||
783 | <a class="ulink" href="http://downloads.yoctoproject.org/releases/" target="_top">Index of /releases:</a> area.</p><p> | ||
784 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 360px"><td align="center"><img src="figures/yp-download.png" align="middle" width="540" /></td></tr></table><p> | ||
785 | For steps on how to use the "Downloads" page, see the | ||
786 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#using-the-downloads-page" target="_top">Using the Downloads Page</a>" | ||
787 | section in the Yocto Project Development Tasks Manual. | ||
788 | </p></li></ul></div><p> | ||
789 | </p></div><div class="section" title="2.6. Licensing"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="licensing">2.6. Licensing<span class="permalink"><a alt="Permalink" title="Permalink" href="#licensing">¶</a></span></h2></div></div></div><p> | ||
790 | Because open source projects are open to the public, they have | ||
791 | different licensing structures in place. | ||
792 | License evolution for both Open Source and Free Software has an | ||
793 | interesting history. | ||
794 | If you are interested in this history, you can find basic information | ||
795 | here: | ||
796 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
797 | <a class="ulink" href="http://en.wikipedia.org/wiki/Open-source_license" target="_top">Open source license history</a> | ||
798 | </p></li><li class="listitem"><p> | ||
799 | <a class="ulink" href="http://en.wikipedia.org/wiki/Free_software_license" target="_top">Free software license history</a> | ||
800 | </p></li></ul></div><p> | ||
801 | </p><p> | ||
802 | In general, the Yocto Project is broadly licensed under the | ||
803 | Massachusetts Institute of Technology (MIT) License. | ||
804 | MIT licensing permits the reuse of software within proprietary | ||
805 | software as long as the license is distributed with that software. | ||
806 | MIT is also compatible with the GNU General Public License (GPL). | ||
807 | Patches to the Yocto Project follow the upstream licensing scheme. | ||
808 | You can find information on the MIT license | ||
809 | <a class="ulink" href="http://www.opensource.org/licenses/mit-license.php" target="_top">here</a>. | ||
810 | You can find information on the GNU GPL | ||
811 | <a class="ulink" href="http://www.opensource.org/licenses/LGPL-3.0" target="_top">here</a>. | ||
812 | </p><p> | ||
813 | When you build an image using the Yocto Project, the build process | ||
814 | uses a known list of licenses to ensure compliance. | ||
815 | You can find this list in the | ||
816 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a> | ||
817 | at <code class="filename">meta/files/common-licenses</code>. | ||
818 | Once the build completes, the list of all licenses found and used | ||
819 | during that build are kept in the | ||
820 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a> | ||
821 | at <code class="filename">tmp/deploy/licenses</code>. | ||
822 | </p><p> | ||
823 | If a module requires a license that is not in the base list, the | ||
824 | build process generates a warning during the build. | ||
825 | These tools make it easier for a developer to be certain of the | ||
826 | licenses with which their shipped products must comply. | ||
827 | However, even with these tools it is still up to the developer to | ||
828 | resolve potential licensing issues. | ||
829 | </p><p> | ||
830 | The base list of licenses used by the build process is a combination | ||
831 | of the Software Package Data Exchange (SPDX) list and the Open | ||
832 | Source Initiative (OSI) projects. | ||
833 | <a class="ulink" href="http://spdx.org" target="_top">SPDX Group</a> is a working group of | ||
834 | the Linux Foundation that maintains a specification for a standard | ||
835 | format for communicating the components, licenses, and copyrights | ||
836 | associated with a software package. | ||
837 | <a class="ulink" href="http://opensource.org" target="_top">OSI</a> is a corporation | ||
838 | dedicated to the Open Source Definition and the effort for reviewing | ||
839 | and approving licenses that conform to the Open Source Definition | ||
840 | (OSD). | ||
841 | </p><p> | ||
842 | You can find a list of the combined SPDX and OSI licenses that the | ||
843 | Yocto Project uses in the | ||
844 | <code class="filename">meta/files/common-licenses</code> directory in your | ||
845 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a>. | ||
846 | </p><p> | ||
847 | For information that can help you maintain compliance with various | ||
848 | open source licensing during the lifecycle of a product created using | ||
849 | the Yocto Project, see the | ||
850 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#maintaining-open-source-license-compliance-during-your-products-lifecycle" target="_top">Maintaining Open Source License Compliance During Your Product's Lifecycle</a>" | ||
851 | section in the Yocto Project Development Tasks Manual. | ||
852 | </p></div><div class="section" title="2.7. Recipe Syntax"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="recipe-syntax">2.7. Recipe Syntax<span class="permalink"><a alt="Permalink" title="Permalink" href="#recipe-syntax">¶</a></span></h2></div></div></div><p> | ||
853 | Understanding recipe file syntax is important for | ||
854 | writing recipes. | ||
855 | The following list overviews the basic items that make up a | ||
856 | BitBake recipe file. | ||
857 | For more complete BitBake syntax descriptions, see the | ||
858 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#bitbake-user-manual-metadata" target="_top">Syntax and Operators</a>" | ||
859 | chapter of the BitBake User Manual. | ||
860 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Variable Assignments and Manipulations:</em></span> | ||
861 | Variable assignments allow a value to be assigned to a | ||
862 | variable. | ||
863 | The assignment can be static text or might include | ||
864 | the contents of other variables. | ||
865 | In addition to the assignment, appending and prepending | ||
866 | operations are also supported.</p><p>The following example shows some of the ways | ||
867 | you can use variables in recipes: | ||
868 | </p><pre class="literallayout"> | ||
869 | S = "${WORKDIR}/postfix-${PV}" | ||
870 | CFLAGS += "-DNO_ASM" | ||
871 | SRC_URI_append = " file://fixup.patch" | ||
872 | </pre><p> | ||
873 | </p></li><li class="listitem"><p><span class="emphasis"><em>Functions:</em></span> | ||
874 | Functions provide a series of actions to be performed. | ||
875 | You usually use functions to override the default | ||
876 | implementation of a task function or to complement | ||
877 | a default function (i.e. append or prepend to an | ||
878 | existing function). | ||
879 | Standard functions use <code class="filename">sh</code> shell | ||
880 | syntax, although access to OpenEmbedded variables and | ||
881 | internal methods are also available.</p><p>The following is an example function from the | ||
882 | <code class="filename">sed</code> recipe: | ||
883 | </p><pre class="literallayout"> | ||
884 | do_install () { | ||
885 | autotools_do_install | ||
886 | install -d ${D}${base_bindir} | ||
887 | mv ${D}${bindir}/sed ${D}${base_bindir}/sed | ||
888 | rmdir ${D}${bindir}/ | ||
889 | } | ||
890 | </pre><p> | ||
891 | It is also possible to implement new functions that | ||
892 | are called between existing tasks as long as the | ||
893 | new functions are not replacing or complementing the | ||
894 | default functions. | ||
895 | You can implement functions in Python | ||
896 | instead of shell. | ||
897 | Both of these options are not seen in the majority of | ||
898 | recipes.</p></li><li class="listitem"><p><span class="emphasis"><em>Keywords:</em></span> | ||
899 | BitBake recipes use only a few keywords. | ||
900 | You use keywords to include common | ||
901 | functions (<code class="filename">inherit</code>), load parts | ||
902 | of a recipe from other files | ||
903 | (<code class="filename">include</code> and | ||
904 | <code class="filename">require</code>) and export variables | ||
905 | to the environment (<code class="filename">export</code>).</p><p>The following example shows the use of some of | ||
906 | these keywords: | ||
907 | </p><pre class="literallayout"> | ||
908 | export POSTCONF = "${STAGING_BINDIR}/postconf" | ||
909 | inherit autoconf | ||
910 | require otherfile.inc | ||
911 | </pre><p> | ||
912 | </p></li><li class="listitem"><p><span class="emphasis"><em>Comments:</em></span> | ||
913 | Any lines that begin with the hash character | ||
914 | (<code class="filename">#</code>) are treated as comment lines | ||
915 | and are ignored: | ||
916 | </p><pre class="literallayout"> | ||
917 | # This is a comment | ||
918 | </pre><p> | ||
919 | </p></li></ul></div><p> | ||
920 | </p><p> | ||
921 | This next list summarizes the most important and most commonly | ||
922 | used parts of the recipe syntax. | ||
923 | For more information on these parts of the syntax, you can | ||
924 | reference the | ||
925 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#bitbake-user-manual-metadata" target="_top">Syntax and Operators</a> | ||
926 | chapter in the BitBake User Manual. | ||
927 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Line Continuation: <code class="filename">\</code></em></span> - | ||
928 | Use the backward slash (<code class="filename">\</code>) | ||
929 | character to split a statement over multiple lines. | ||
930 | Place the slash character at the end of the line that | ||
931 | is to be continued on the next line: | ||
932 | </p><pre class="literallayout"> | ||
933 | VAR = "A really long \ | ||
934 | line" | ||
935 | </pre><p> | ||
936 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
937 | You cannot have any characters including spaces | ||
938 | or tabs after the slash character. | ||
939 | </div><p> | ||
940 | </p></li><li class="listitem"><p> | ||
941 | <span class="emphasis"><em>Using Variables: <code class="filename">${...}</code></em></span> - | ||
942 | Use the <code class="filename">${<em class="replaceable"><code>VARNAME</code></em>}</code> syntax to | ||
943 | access the contents of a variable: | ||
944 | </p><pre class="literallayout"> | ||
945 | SRC_URI = "${SOURCEFORGE_MIRROR}/libpng/zlib-${PV}.tar.gz" | ||
946 | </pre><p> | ||
947 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
948 | It is important to understand that the value of a | ||
949 | variable expressed in this form does not get | ||
950 | substituted automatically. | ||
951 | The expansion of these expressions happens | ||
952 | on-demand later (e.g. usually when a function that | ||
953 | makes reference to the variable executes). | ||
954 | This behavior ensures that the values are most | ||
955 | appropriate for the context in which they are | ||
956 | finally used. | ||
957 | On the rare occasion that you do need the variable | ||
958 | expression to be expanded immediately, you can use | ||
959 | the <code class="filename">:=</code> operator instead of | ||
960 | <code class="filename">=</code> when you make the | ||
961 | assignment, but this is not generally needed. | ||
962 | </div><p> | ||
963 | </p></li><li class="listitem"><p><span class="emphasis"><em>Quote All Assignments: <code class="filename">"<em class="replaceable"><code>value</code></em>"</code></em></span> - | ||
964 | Use double quotes around the value in all variable | ||
965 | assignments. | ||
966 | </p><pre class="literallayout"> | ||
967 | VAR1 = "${OTHERVAR}" | ||
968 | VAR2 = "The version is ${PV}" | ||
969 | </pre><p> | ||
970 | </p></li><li class="listitem"><p><span class="emphasis"><em>Conditional Assignment: <code class="filename">?=</code></em></span> - | ||
971 | Conditional assignment is used to assign a value to | ||
972 | a variable, but only when the variable is currently | ||
973 | unset. | ||
974 | Use the question mark followed by the equal sign | ||
975 | (<code class="filename">?=</code>) to make a "soft" assignment | ||
976 | used for conditional assignment. | ||
977 | Typically, "soft" assignments are used in the | ||
978 | <code class="filename">local.conf</code> file for variables | ||
979 | that are allowed to come through from the external | ||
980 | environment. | ||
981 | </p><p>Here is an example where | ||
982 | <code class="filename">VAR1</code> is set to "New value" if | ||
983 | it is currently empty. | ||
984 | However, if <code class="filename">VAR1</code> has already been | ||
985 | set, it remains unchanged: | ||
986 | </p><pre class="literallayout"> | ||
987 | VAR1 ?= "New value" | ||
988 | </pre><p> | ||
989 | In this next example, <code class="filename">VAR1</code> | ||
990 | is left with the value "Original value": | ||
991 | </p><pre class="literallayout"> | ||
992 | VAR1 = "Original value" | ||
993 | VAR1 ?= "New value" | ||
994 | </pre><p> | ||
995 | </p></li><li class="listitem"><p><span class="emphasis"><em>Appending: <code class="filename">+=</code></em></span> - | ||
996 | Use the plus character followed by the equals sign | ||
997 | (<code class="filename">+=</code>) to append values to existing | ||
998 | variables. | ||
999 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1000 | This operator adds a space between the existing | ||
1001 | content of the variable and the new content. | ||
1002 | </div><p>Here is an example: | ||
1003 | </p><pre class="literallayout"> | ||
1004 | SRC_URI += "file://fix-makefile.patch" | ||
1005 | </pre><p> | ||
1006 | </p></li><li class="listitem"><p><span class="emphasis"><em>Prepending: <code class="filename">=+</code></em></span> - | ||
1007 | Use the equals sign followed by the plus character | ||
1008 | (<code class="filename">=+</code>) to prepend values to existing | ||
1009 | variables. | ||
1010 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1011 | This operator adds a space between the new content | ||
1012 | and the existing content of the variable. | ||
1013 | </div><p>Here is an example: | ||
1014 | </p><pre class="literallayout"> | ||
1015 | VAR =+ "Starts" | ||
1016 | </pre><p> | ||
1017 | </p></li><li class="listitem"><p><span class="emphasis"><em>Appending: <code class="filename">_append</code></em></span> - | ||
1018 | Use the <code class="filename">_append</code> operator to | ||
1019 | append values to existing variables. | ||
1020 | This operator does not add any additional space. | ||
1021 | Also, the operator is applied after all the | ||
1022 | <code class="filename">+=</code>, and | ||
1023 | <code class="filename">=+</code> operators have been applied and | ||
1024 | after all <code class="filename">=</code> assignments have | ||
1025 | occurred. | ||
1026 | </p><p>The following example shows the space being | ||
1027 | explicitly added to the start to ensure the appended | ||
1028 | value is not merged with the existing value: | ||
1029 | </p><pre class="literallayout"> | ||
1030 | SRC_URI_append = " file://fix-makefile.patch" | ||
1031 | </pre><p> | ||
1032 | You can also use the <code class="filename">_append</code> | ||
1033 | operator with overrides, which results in the actions | ||
1034 | only being performed for the specified target or | ||
1035 | machine: | ||
1036 | </p><pre class="literallayout"> | ||
1037 | SRC_URI_append_sh4 = " file://fix-makefile.patch" | ||
1038 | </pre><p> | ||
1039 | </p></li><li class="listitem"><p><span class="emphasis"><em>Prepending: <code class="filename">_prepend</code></em></span> - | ||
1040 | Use the <code class="filename">_prepend</code> operator to | ||
1041 | prepend values to existing variables. | ||
1042 | This operator does not add any additional space. | ||
1043 | Also, the operator is applied after all the | ||
1044 | <code class="filename">+=</code>, and | ||
1045 | <code class="filename">=+</code> operators have been applied and | ||
1046 | after all <code class="filename">=</code> assignments have | ||
1047 | occurred. | ||
1048 | </p><p>The following example shows the space being | ||
1049 | explicitly added to the end to ensure the prepended | ||
1050 | value is not merged with the existing value: | ||
1051 | </p><pre class="literallayout"> | ||
1052 | CFLAGS_prepend = "-I${S}/myincludes " | ||
1053 | </pre><p> | ||
1054 | You can also use the <code class="filename">_prepend</code> | ||
1055 | operator with overrides, which results in the actions | ||
1056 | only being performed for the specified target or | ||
1057 | machine: | ||
1058 | </p><pre class="literallayout"> | ||
1059 | CFLAGS_prepend_sh4 = "-I${S}/myincludes " | ||
1060 | </pre><p> | ||
1061 | </p></li><li class="listitem"><p><span class="emphasis"><em>Overrides:</em></span> - | ||
1062 | You can use overrides to set a value conditionally, | ||
1063 | typically based on how the recipe is being built. | ||
1064 | For example, to set the | ||
1065 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-KBRANCH" target="_top"><code class="filename">KBRANCH</code></a> | ||
1066 | variable's value to "standard/base" for any target | ||
1067 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-MACHINE" target="_top"><code class="filename">MACHINE</code></a>, | ||
1068 | except for qemuarm where it should be set to | ||
1069 | "standard/arm-versatile-926ejs", you would do the | ||
1070 | following: | ||
1071 | </p><pre class="literallayout"> | ||
1072 | KBRANCH = "standard/base" | ||
1073 | KBRANCH_qemuarm = "standard/arm-versatile-926ejs" | ||
1074 | </pre><p> | ||
1075 | Overrides are also used to separate alternate values | ||
1076 | of a variable in other situations. | ||
1077 | For example, when setting variables such as | ||
1078 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-FILES" target="_top"><code class="filename">FILES</code></a> | ||
1079 | and | ||
1080 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-RDEPENDS" target="_top"><code class="filename">RDEPENDS</code></a> | ||
1081 | that are specific to individual packages produced by | ||
1082 | a recipe, you should always use an override that | ||
1083 | specifies the name of the package. | ||
1084 | </p></li><li class="listitem"><p><span class="emphasis"><em>Indentation:</em></span> | ||
1085 | Use spaces for indentation rather than than tabs. | ||
1086 | For shell functions, both currently work. | ||
1087 | However, it is a policy decision of the Yocto Project | ||
1088 | to use tabs in shell functions. | ||
1089 | Realize that some layers have a policy to use spaces | ||
1090 | for all indentation. | ||
1091 | </p></li><li class="listitem"><p><span class="emphasis"><em>Using Python for Complex Operations: <code class="filename">${@<em class="replaceable"><code>python_code</code></em>}</code></em></span> - | ||
1092 | For more advanced processing, it is possible to use | ||
1093 | Python code during variable assignments (e.g. | ||
1094 | search and replacement on a variable).</p><p>You indicate Python code using the | ||
1095 | <code class="filename">${@<em class="replaceable"><code>python_code</code></em>}</code> | ||
1096 | syntax for the variable assignment: | ||
1097 | </p><pre class="literallayout"> | ||
1098 | SRC_URI = "ftp://ftp.info-zip.org/pub/infozip/src/zip${@d.getVar('PV',1).replace('.', '')}.tgz | ||
1099 | </pre><p> | ||
1100 | </p></li><li class="listitem"><p><span class="emphasis"><em>Shell Function Syntax:</em></span> | ||
1101 | Write shell functions as if you were writing a shell | ||
1102 | script when you describe a list of actions to take. | ||
1103 | You should ensure that your script works with a generic | ||
1104 | <code class="filename">sh</code> and that it does not require | ||
1105 | any <code class="filename">bash</code> or other shell-specific | ||
1106 | functionality. | ||
1107 | The same considerations apply to various system | ||
1108 | utilities (e.g. <code class="filename">sed</code>, | ||
1109 | <code class="filename">grep</code>, <code class="filename">awk</code>, | ||
1110 | and so forth) that you might wish to use. | ||
1111 | If in doubt, you should check with multiple | ||
1112 | implementations - including those from BusyBox. | ||
1113 | </p></li></ul></div><p> | ||
1114 | </p></div><div class="section" title="2.8. Development Concepts"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="development-concepts">2.8. Development Concepts<span class="permalink"><a alt="Permalink" title="Permalink" href="#development-concepts">¶</a></span></h2></div></div></div><p> | ||
1115 | This section takes a more detailed look inside the development | ||
1116 | process. | ||
1117 | The following diagram represents development at a high level. | ||
1118 | The remainder of this chapter expands on the fundamental input, output, | ||
1119 | process, and | ||
1120 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#metadata" target="_top">Metadata</a>) blocks | ||
1121 | that make up development in the Yocto Project environment. | ||
1122 | </p><p><a id="general-yocto-environment-figure"></a> | ||
1123 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 383px"><td align="center"><img src="figures/yocto-environment-ref.png" align="middle" height="383" /></td></tr></table><p> | ||
1124 | </p><p> | ||
1125 | In general, development consists of several functional areas: | ||
1126 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>User Configuration:</em></span> | ||
1127 | Metadata you can use to control the build process. | ||
1128 | </p></li><li class="listitem"><p><span class="emphasis"><em>Metadata Layers:</em></span> | ||
1129 | Various layers that provide software, machine, and | ||
1130 | distro Metadata.</p></li><li class="listitem"><p><span class="emphasis"><em>Source Files:</em></span> | ||
1131 | Upstream releases, local projects, and SCMs.</p></li><li class="listitem"><p><span class="emphasis"><em>Build System:</em></span> | ||
1132 | Processes under the control of | ||
1133 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#bitbake-term" target="_top">BitBake</a>. | ||
1134 | This block expands on how BitBake fetches source, applies | ||
1135 | patches, completes compilation, analyzes output for package | ||
1136 | generation, creates and tests packages, generates images, and | ||
1137 | generates cross-development tools.</p></li><li class="listitem"><p><span class="emphasis"><em>Package Feeds:</em></span> | ||
1138 | Directories containing output packages (RPM, DEB or IPK), | ||
1139 | which are subsequently used in the construction of an image or | ||
1140 | SDK, produced by the build system. | ||
1141 | These feeds can also be copied and shared using a web server or | ||
1142 | other means to facilitate extending or updating existing | ||
1143 | images on devices at runtime if runtime package management is | ||
1144 | enabled.</p></li><li class="listitem"><p><span class="emphasis"><em>Images:</em></span> | ||
1145 | Images produced by the development process. | ||
1146 | </p></li><li class="listitem"><p><span class="emphasis"><em>Application Development SDK:</em></span> | ||
1147 | Cross-development tools that are produced along with an image | ||
1148 | or separately with BitBake.</p></li></ul></div><p> | ||
1149 | </p><div class="section" title="2.8.1. User Configuration"><div class="titlepage"><div><div><h3 class="title" id="user-configuration">2.8.1. User Configuration<span class="permalink"><a alt="Permalink" title="Permalink" href="#user-configuration">¶</a></span></h3></div></div></div><p> | ||
1150 | User configuration helps define the build. | ||
1151 | Through user configuration, you can tell BitBake the | ||
1152 | target architecture for which you are building the image, | ||
1153 | where to store downloaded source, and other build properties. | ||
1154 | </p><p> | ||
1155 | The following figure shows an expanded representation of the | ||
1156 | "User Configuration" box of the | ||
1157 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>: | ||
1158 | </p><p> | ||
1159 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 405px"><td align="center"><img src="figures/user-configuration.png" align="middle" height="405" /></td></tr></table><p> | ||
1160 | </p><p> | ||
1161 | BitBake needs some basic configuration files in order to complete | ||
1162 | a build. | ||
1163 | These files are <code class="filename">*.conf</code> files. | ||
1164 | The minimally necessary ones reside as example files in the | ||
1165 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a>. | ||
1166 | For simplicity, this section refers to the Source Directory as | ||
1167 | the "Poky Directory." | ||
1168 | </p><p> | ||
1169 | When you clone the <code class="filename">poky</code> Git repository or you | ||
1170 | download and unpack a Yocto Project release, you can set up the | ||
1171 | Source Directory to be named anything you want. | ||
1172 | For this discussion, the cloned repository uses the default | ||
1173 | name <code class="filename">poky</code>. | ||
1174 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1175 | The Poky repository is primarily an aggregation of existing | ||
1176 | repositories. | ||
1177 | It is not a canonical upstream source. | ||
1178 | </div><p> | ||
1179 | </p><p> | ||
1180 | The <code class="filename">meta-poky</code> layer inside Poky contains | ||
1181 | a <code class="filename">conf</code> directory that has example | ||
1182 | configuration files. | ||
1183 | These example files are used as a basis for creating actual | ||
1184 | configuration files when you source the build environment | ||
1185 | script | ||
1186 | (i.e. | ||
1187 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#structure-core-script" target="_top"><code class="filename">oe-init-build-env</code></a>). | ||
1188 | </p><p> | ||
1189 | Sourcing the build environment script creates a | ||
1190 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a> | ||
1191 | if one does not already exist. | ||
1192 | BitBake uses the Build Directory for all its work during builds. | ||
1193 | The Build Directory has a <code class="filename">conf</code> directory that | ||
1194 | contains default versions of your <code class="filename">local.conf</code> | ||
1195 | and <code class="filename">bblayers.conf</code> configuration files. | ||
1196 | These default configuration files are created only if versions | ||
1197 | do not already exist in the Build Directory at the time you | ||
1198 | source the build environment setup script. | ||
1199 | </p><p> | ||
1200 | Because the Poky repository is fundamentally an aggregation of | ||
1201 | existing repositories, some users might be familiar with running | ||
1202 | the <code class="filename">oe-init-build-env</code> script in the context | ||
1203 | of separate OpenEmbedded-Core and BitBake repositories rather than a | ||
1204 | single Poky repository. | ||
1205 | This discussion assumes the script is executed from within a cloned | ||
1206 | or unpacked version of Poky. | ||
1207 | </p><p> | ||
1208 | Depending on where the script is sourced, different sub-scripts | ||
1209 | are called to set up the Build Directory (Yocto or OpenEmbedded). | ||
1210 | Specifically, the script | ||
1211 | <code class="filename">scripts/oe-setup-builddir</code> inside the | ||
1212 | poky directory sets up the Build Directory and seeds the directory | ||
1213 | (if necessary) with configuration files appropriate for the | ||
1214 | Yocto Project development environment. | ||
1215 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1216 | The <code class="filename">scripts/oe-setup-builddir</code> script | ||
1217 | uses the <code class="filename">$TEMPLATECONF</code> variable to | ||
1218 | determine which sample configuration files to locate. | ||
1219 | </div><p> | ||
1220 | </p><p> | ||
1221 | The <code class="filename">local.conf</code> file provides many | ||
1222 | basic variables that define a build environment. | ||
1223 | Here is a list of a few. | ||
1224 | To see the default configurations in a <code class="filename">local.conf</code> | ||
1225 | file created by the build environment script, see the | ||
1226 | <code class="filename">local.conf.sample</code> in the | ||
1227 | <code class="filename">meta-poky</code> layer: | ||
1228 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Parallelism Options:</em></span> | ||
1229 | Controlled by the | ||
1230 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-BB_NUMBER_THREADS" target="_top"><code class="filename">BB_NUMBER_THREADS</code></a>, | ||
1231 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PARALLEL_MAKE" target="_top"><code class="filename">PARALLEL_MAKE</code></a>, | ||
1232 | and | ||
1233 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#var-BB_NUMBER_PARSE_THREADS" target="_top"><code class="filename">BB_NUMBER_PARSE_THREADS</code></a> | ||
1234 | variables.</p></li><li class="listitem"><p><span class="emphasis"><em>Target Machine Selection:</em></span> | ||
1235 | Controlled by the | ||
1236 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-MACHINE" target="_top"><code class="filename">MACHINE</code></a> | ||
1237 | variable.</p></li><li class="listitem"><p><span class="emphasis"><em>Download Directory:</em></span> | ||
1238 | Controlled by the | ||
1239 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DL_DIR" target="_top"><code class="filename">DL_DIR</code></a> | ||
1240 | variable.</p></li><li class="listitem"><p><span class="emphasis"><em>Shared State Directory:</em></span> | ||
1241 | Controlled by the | ||
1242 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SSTATE_DIR" target="_top"><code class="filename">SSTATE_DIR</code></a> | ||
1243 | variable.</p></li><li class="listitem"><p><span class="emphasis"><em>Build Output:</em></span> | ||
1244 | Controlled by the | ||
1245 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TMPDIR" target="_top"><code class="filename">TMPDIR</code></a> | ||
1246 | variable.</p></li></ul></div><p> | ||
1247 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1248 | Configurations set in the <code class="filename">conf/local.conf</code> | ||
1249 | file can also be set in the | ||
1250 | <code class="filename">conf/site.conf</code> and | ||
1251 | <code class="filename">conf/auto.conf</code> configuration files. | ||
1252 | </div><p> | ||
1253 | </p><p> | ||
1254 | The <code class="filename">bblayers.conf</code> file tells BitBake what | ||
1255 | layers you want considered during the build. | ||
1256 | By default, the layers listed in this file include layers | ||
1257 | minimally needed by the build system. | ||
1258 | However, you must manually add any custom layers you have created. | ||
1259 | You can find more information on working with the | ||
1260 | <code class="filename">bblayers.conf</code> file in the | ||
1261 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#enabling-your-layer" target="_top">Enabling Your Layer</a>" | ||
1262 | section in the Yocto Project Development Tasks Manual. | ||
1263 | </p><p> | ||
1264 | The files <code class="filename">site.conf</code> and | ||
1265 | <code class="filename">auto.conf</code> are not created by the environment | ||
1266 | initialization script. | ||
1267 | If you want the <code class="filename">site.conf</code> file, you need to | ||
1268 | create that yourself. | ||
1269 | The <code class="filename">auto.conf</code> file is typically created by | ||
1270 | an autobuilder: | ||
1271 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em><code class="filename">site.conf</code>:</em></span> | ||
1272 | You can use the <code class="filename">conf/site.conf</code> | ||
1273 | configuration file to configure multiple build directories. | ||
1274 | For example, suppose you had several build environments and | ||
1275 | they shared some common features. | ||
1276 | You can set these default build properties here. | ||
1277 | A good example is perhaps the packaging format to use | ||
1278 | through the | ||
1279 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_CLASSES" target="_top"><code class="filename">PACKAGE_CLASSES</code></a> | ||
1280 | variable.</p><p>One useful scenario for using the | ||
1281 | <code class="filename">conf/site.conf</code> file is to extend your | ||
1282 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-BBPATH" target="_top"><code class="filename">BBPATH</code></a> | ||
1283 | variable to include the path to a | ||
1284 | <code class="filename">conf/site.conf</code>. | ||
1285 | Then, when BitBake looks for Metadata using | ||
1286 | <code class="filename">BBPATH</code>, it finds the | ||
1287 | <code class="filename">conf/site.conf</code> file and applies your | ||
1288 | common configurations found in the file. | ||
1289 | To override configurations in a particular build directory, | ||
1290 | alter the similar configurations within that build | ||
1291 | directory's <code class="filename">conf/local.conf</code> file. | ||
1292 | </p></li><li class="listitem"><p><span class="emphasis"><em><code class="filename">auto.conf</code>:</em></span> | ||
1293 | The file is usually created and written to by | ||
1294 | an autobuilder. | ||
1295 | The settings put into the file are typically the same as | ||
1296 | you would find in the <code class="filename">conf/local.conf</code> | ||
1297 | or the <code class="filename">conf/site.conf</code> files. | ||
1298 | </p></li></ul></div><p> | ||
1299 | </p><p> | ||
1300 | You can edit all configuration files to further define | ||
1301 | any particular build environment. | ||
1302 | This process is represented by the "User Configuration Edits" | ||
1303 | box in the figure. | ||
1304 | </p><p> | ||
1305 | When you launch your build with the | ||
1306 | <code class="filename">bitbake <em class="replaceable"><code>target</code></em></code> | ||
1307 | command, BitBake sorts out the configurations to ultimately | ||
1308 | define your build environment. | ||
1309 | It is important to understand that the OpenEmbedded build system | ||
1310 | reads the configuration files in a specific order: | ||
1311 | <code class="filename">site.conf</code>, <code class="filename">auto.conf</code>, | ||
1312 | and <code class="filename">local.conf</code>. | ||
1313 | And, the build system applies the normal assignment statement | ||
1314 | rules. | ||
1315 | Because the files are parsed in a specific order, variable | ||
1316 | assignments for the same variable could be affected. | ||
1317 | For example, if the <code class="filename">auto.conf</code> file and | ||
1318 | the <code class="filename">local.conf</code> set | ||
1319 | <em class="replaceable"><code>variable1</code></em> to different values, because | ||
1320 | the build system parses <code class="filename">local.conf</code> after | ||
1321 | <code class="filename">auto.conf</code>, | ||
1322 | <em class="replaceable"><code>variable1</code></em> is assigned the value from | ||
1323 | the <code class="filename">local.conf</code> file. | ||
1324 | </p></div><div class="section" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"><div class="titlepage"><div><div><h3 class="title" id="metadata-machine-configuration-and-policy-configuration">2.8.2. Metadata, Machine Configuration, and Policy Configuration<span class="permalink"><a alt="Permalink" title="Permalink" href="#metadata-machine-configuration-and-policy-configuration">¶</a></span></h3></div></div></div><p> | ||
1325 | The previous section described the user configurations that | ||
1326 | define BitBake's global behavior. | ||
1327 | This section takes a closer look at the layers the build system | ||
1328 | uses to further control the build. | ||
1329 | These layers provide Metadata for the software, machine, and | ||
1330 | policy. | ||
1331 | </p><p> | ||
1332 | In general, three types of layer input exist: | ||
1333 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Policy Configuration:</em></span> | ||
1334 | Distribution Layers provide top-level or general | ||
1335 | policies for the image or SDK being built. | ||
1336 | For example, this layer would dictate whether BitBake | ||
1337 | produces RPM or IPK packages.</p></li><li class="listitem"><p><span class="emphasis"><em>Machine Configuration:</em></span> | ||
1338 | Board Support Package (BSP) layers provide machine | ||
1339 | configurations. | ||
1340 | This type of information is specific to a particular | ||
1341 | target architecture.</p></li><li class="listitem"><p><span class="emphasis"><em>Metadata:</em></span> | ||
1342 | Software layers contain user-supplied recipe files, | ||
1343 | patches, and append files. | ||
1344 | </p></li></ul></div><p> | ||
1345 | </p><p> | ||
1346 | The following figure shows an expanded representation of the | ||
1347 | Metadata, Machine Configuration, and Policy Configuration input | ||
1348 | (layers) boxes of the | ||
1349 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>: | ||
1350 | </p><p> | ||
1351 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 675px"><td align="center"><img src="figures/layer-input.png" align="middle" width="720" /></td></tr></table><p> | ||
1352 | </p><p> | ||
1353 | In general, all layers have a similar structure. | ||
1354 | They all contain a licensing file | ||
1355 | (e.g. <code class="filename">COPYING</code>) if the layer is to be | ||
1356 | distributed, a <code class="filename">README</code> file as good practice | ||
1357 | and especially if the layer is to be distributed, a | ||
1358 | configuration directory, and recipe directories. | ||
1359 | </p><p> | ||
1360 | The Yocto Project has many layers that can be used. | ||
1361 | You can see a web-interface listing of them on the | ||
1362 | <a class="ulink" href="http://git.yoctoproject.org/" target="_top">Source Repositories</a> | ||
1363 | page. | ||
1364 | The layers are shown at the bottom categorized under | ||
1365 | "Yocto Metadata Layers." | ||
1366 | These layers are fundamentally a subset of the | ||
1367 | <a class="ulink" href="http://layers.openembedded.org/layerindex/layers/" target="_top">OpenEmbedded Metadata Index</a>, | ||
1368 | which lists all layers provided by the OpenEmbedded community. | ||
1369 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1370 | Layers exist in the Yocto Project Source Repositories that | ||
1371 | cannot be found in the OpenEmbedded Metadata Index. | ||
1372 | These layers are either deprecated or experimental in nature. | ||
1373 | </div><p> | ||
1374 | </p><p> | ||
1375 | BitBake uses the <code class="filename">conf/bblayers.conf</code> file, | ||
1376 | which is part of the user configuration, to find what layers it | ||
1377 | should be using as part of the build. | ||
1378 | </p><p> | ||
1379 | For more information on layers, see the | ||
1380 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#understanding-and-creating-layers" target="_top">Understanding and Creating Layers</a>" | ||
1381 | section in the Yocto Project Development Tasks Manual. | ||
1382 | </p><div class="section" title="2.8.2.1. Distro Layer"><div class="titlepage"><div><div><h4 class="title" id="distro-layer">2.8.2.1. Distro Layer<span class="permalink"><a alt="Permalink" title="Permalink" href="#distro-layer">¶</a></span></h4></div></div></div><p> | ||
1383 | The distribution layer provides policy configurations for your | ||
1384 | distribution. | ||
1385 | Best practices dictate that you isolate these types of | ||
1386 | configurations into their own layer. | ||
1387 | Settings you provide in | ||
1388 | <code class="filename">conf/distro/<em class="replaceable"><code>distro</code></em>.conf</code> override | ||
1389 | similar | ||
1390 | settings that BitBake finds in your | ||
1391 | <code class="filename">conf/local.conf</code> file in the Build | ||
1392 | Directory. | ||
1393 | </p><p> | ||
1394 | The following list provides some explanation and references | ||
1395 | for what you typically find in the distribution layer: | ||
1396 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>classes:</em></span> | ||
1397 | Class files (<code class="filename">.bbclass</code>) hold | ||
1398 | common functionality that can be shared among | ||
1399 | recipes in the distribution. | ||
1400 | When your recipes inherit a class, they take on the | ||
1401 | settings and functions for that class. | ||
1402 | You can read more about class files in the | ||
1403 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes" target="_top">Classes</a>" | ||
1404 | section of the Yocto Reference Manual. | ||
1405 | </p></li><li class="listitem"><p><span class="emphasis"><em>conf:</em></span> | ||
1406 | This area holds configuration files for the | ||
1407 | layer (<code class="filename">conf/layer.conf</code>), | ||
1408 | the distribution | ||
1409 | (<code class="filename">conf/distro/<em class="replaceable"><code>distro</code></em>.conf</code>), | ||
1410 | and any distribution-wide include files. | ||
1411 | </p></li><li class="listitem"><p><span class="emphasis"><em>recipes-*:</em></span> | ||
1412 | Recipes and append files that affect common | ||
1413 | functionality across the distribution. | ||
1414 | This area could include recipes and append files | ||
1415 | to add distribution-specific configuration, | ||
1416 | initialization scripts, custom image recipes, | ||
1417 | and so forth.</p></li></ul></div><p> | ||
1418 | </p></div><div class="section" title="2.8.2.2. BSP Layer"><div class="titlepage"><div><div><h4 class="title" id="bsp-layer">2.8.2.2. BSP Layer<span class="permalink"><a alt="Permalink" title="Permalink" href="#bsp-layer">¶</a></span></h4></div></div></div><p> | ||
1419 | The BSP Layer provides machine configurations. | ||
1420 | Everything in this layer is specific to the machine for which | ||
1421 | you are building the image or the SDK. | ||
1422 | A common structure or form is defined for BSP layers. | ||
1423 | You can learn more about this structure in the | ||
1424 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bsp-guide/bsp-guide.html" target="_top">Yocto Project Board Support Package (BSP) Developer's Guide</a>. | ||
1425 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1426 | In order for a BSP layer to be considered compliant with the | ||
1427 | Yocto Project, it must meet some structural requirements. | ||
1428 | </div><p> | ||
1429 | </p><p> | ||
1430 | The BSP Layer's configuration directory contains | ||
1431 | configuration files for the machine | ||
1432 | (<code class="filename">conf/machine/<em class="replaceable"><code>machine</code></em>.conf</code>) and, | ||
1433 | of course, the layer (<code class="filename">conf/layer.conf</code>). | ||
1434 | </p><p> | ||
1435 | The remainder of the layer is dedicated to specific recipes | ||
1436 | by function: <code class="filename">recipes-bsp</code>, | ||
1437 | <code class="filename">recipes-core</code>, | ||
1438 | <code class="filename">recipes-graphics</code>, and | ||
1439 | <code class="filename">recipes-kernel</code>. | ||
1440 | Metadata can exist for multiple formfactors, graphics | ||
1441 | support systems, and so forth. | ||
1442 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1443 | While the figure shows several <code class="filename">recipes-*</code> | ||
1444 | directories, not all these directories appear in all | ||
1445 | BSP layers. | ||
1446 | </div><p> | ||
1447 | </p></div><div class="section" title="2.8.2.3. Software Layer"><div class="titlepage"><div><div><h4 class="title" id="software-layer">2.8.2.3. Software Layer<span class="permalink"><a alt="Permalink" title="Permalink" href="#software-layer">¶</a></span></h4></div></div></div><p> | ||
1448 | The software layer provides the Metadata for additional | ||
1449 | software packages used during the build. | ||
1450 | This layer does not include Metadata that is specific to the | ||
1451 | distribution or the machine, which are found in their | ||
1452 | respective layers. | ||
1453 | </p><p> | ||
1454 | This layer contains any new recipes that your project needs | ||
1455 | in the form of recipe files. | ||
1456 | </p></div></div><div class="section" title="2.8.3. Sources"><div class="titlepage"><div><div><h3 class="title" id="sources-dev-environment">2.8.3. Sources<span class="permalink"><a alt="Permalink" title="Permalink" href="#sources-dev-environment">¶</a></span></h3></div></div></div><p> | ||
1457 | In order for the OpenEmbedded build system to create an image or | ||
1458 | any target, it must be able to access source files. | ||
1459 | The | ||
1460 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a> | ||
1461 | represents source files using the "Upstream Project Releases", | ||
1462 | "Local Projects", and "SCMs (optional)" boxes. | ||
1463 | The figure represents mirrors, which also play a role in locating | ||
1464 | source files, with the "Source Mirror(s)" box. | ||
1465 | </p><p> | ||
1466 | The method by which source files are ultimately organized is | ||
1467 | a function of the project. | ||
1468 | For example, for released software, projects tend to use tarballs | ||
1469 | or other archived files that can capture the state of a release | ||
1470 | guaranteeing that it is statically represented. | ||
1471 | On the other hand, for a project that is more dynamic or | ||
1472 | experimental in nature, a project might keep source files in a | ||
1473 | repository controlled by a Source Control Manager (SCM) such as | ||
1474 | Git. | ||
1475 | Pulling source from a repository allows you to control | ||
1476 | the point in the repository (the revision) from which you want to | ||
1477 | build software. | ||
1478 | Finally, a combination of the two might exist, which would give the | ||
1479 | consumer a choice when deciding where to get source files. | ||
1480 | </p><p> | ||
1481 | BitBake uses the | ||
1482 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SRC_URI" target="_top"><code class="filename">SRC_URI</code></a> | ||
1483 | variable to point to source files regardless of their location. | ||
1484 | Each recipe must have a <code class="filename">SRC_URI</code> variable | ||
1485 | that points to the source. | ||
1486 | </p><p> | ||
1487 | Another area that plays a significant role in where source files | ||
1488 | come from is pointed to by the | ||
1489 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DL_DIR" target="_top"><code class="filename">DL_DIR</code></a> | ||
1490 | variable. | ||
1491 | This area is a cache that can hold previously downloaded source. | ||
1492 | You can also instruct the OpenEmbedded build system to create | ||
1493 | tarballs from Git repositories, which is not the default behavior, | ||
1494 | and store them in the <code class="filename">DL_DIR</code> by using the | ||
1495 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-BB_GENERATE_MIRROR_TARBALLS" target="_top"><code class="filename">BB_GENERATE_MIRROR_TARBALLS</code></a> | ||
1496 | variable. | ||
1497 | </p><p> | ||
1498 | Judicious use of a <code class="filename">DL_DIR</code> directory can | ||
1499 | save the build system a trip across the Internet when looking | ||
1500 | for files. | ||
1501 | A good method for using a download directory is to have | ||
1502 | <code class="filename">DL_DIR</code> point to an area outside of your | ||
1503 | Build Directory. | ||
1504 | Doing so allows you to safely delete the Build Directory | ||
1505 | if needed without fear of removing any downloaded source file. | ||
1506 | </p><p> | ||
1507 | The remainder of this section provides a deeper look into the | ||
1508 | source files and the mirrors. | ||
1509 | Here is a more detailed look at the source file area of the | ||
1510 | base figure: | ||
1511 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 675px"><td align="center"><img src="figures/source-input.png" align="middle" width="630" /></td></tr></table><p> | ||
1512 | </p><div class="section" title="2.8.3.1. Upstream Project Releases"><div class="titlepage"><div><div><h4 class="title" id="upstream-project-releases">2.8.3.1. Upstream Project Releases<span class="permalink"><a alt="Permalink" title="Permalink" href="#upstream-project-releases">¶</a></span></h4></div></div></div><p> | ||
1513 | Upstream project releases exist anywhere in the form of an | ||
1514 | archived file (e.g. tarball or zip file). | ||
1515 | These files correspond to individual recipes. | ||
1516 | For example, the figure uses specific releases each for | ||
1517 | BusyBox, Qt, and Dbus. | ||
1518 | An archive file can be for any released product that can be | ||
1519 | built using a recipe. | ||
1520 | </p></div><div class="section" title="2.8.3.2. Local Projects"><div class="titlepage"><div><div><h4 class="title" id="local-projects">2.8.3.2. Local Projects<span class="permalink"><a alt="Permalink" title="Permalink" href="#local-projects">¶</a></span></h4></div></div></div><p> | ||
1521 | Local projects are custom bits of software the user provides. | ||
1522 | These bits reside somewhere local to a project - perhaps | ||
1523 | a directory into which the user checks in items (e.g. | ||
1524 | a local directory containing a development source tree | ||
1525 | used by the group). | ||
1526 | </p><p> | ||
1527 | The canonical method through which to include a local project | ||
1528 | is to use the | ||
1529 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-externalsrc" target="_top"><code class="filename">externalsrc</code></a> | ||
1530 | class to include that local project. | ||
1531 | You use either the <code class="filename">local.conf</code> or a | ||
1532 | recipe's append file to override or set the | ||
1533 | recipe to point to the local directory on your disk to pull | ||
1534 | in the whole source tree. | ||
1535 | </p><p> | ||
1536 | For information on how to use the | ||
1537 | <code class="filename">externalsrc</code> class, see the | ||
1538 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-externalsrc" target="_top"><code class="filename">externalsrc.bbclass</code></a>" | ||
1539 | section. | ||
1540 | </p></div><div class="section" title="2.8.3.3. Source Control Managers (Optional)"><div class="titlepage"><div><div><h4 class="title" id="scms">2.8.3.3. Source Control Managers (Optional)<span class="permalink"><a alt="Permalink" title="Permalink" href="#scms">¶</a></span></h4></div></div></div><p> | ||
1541 | Another place the build system can get source files from is | ||
1542 | through an SCM such as Git or Subversion. | ||
1543 | In this case, a repository is cloned or checked out. | ||
1544 | The | ||
1545 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-fetch" target="_top"><code class="filename">do_fetch</code></a> | ||
1546 | task inside BitBake uses | ||
1547 | the <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SRC_URI" target="_top"><code class="filename">SRC_URI</code></a> | ||
1548 | variable and the argument's prefix to determine the correct | ||
1549 | fetcher module. | ||
1550 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1551 | For information on how to have the OpenEmbedded build system | ||
1552 | generate tarballs for Git repositories and place them in the | ||
1553 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DL_DIR" target="_top"><code class="filename">DL_DIR</code></a> | ||
1554 | directory, see the | ||
1555 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-BB_GENERATE_MIRROR_TARBALLS" target="_top"><code class="filename">BB_GENERATE_MIRROR_TARBALLS</code></a> | ||
1556 | variable. | ||
1557 | </div><p> | ||
1558 | When fetching a repository, BitBake uses the | ||
1559 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SRCREV" target="_top"><code class="filename">SRCREV</code></a> | ||
1560 | variable to determine the specific revision from which to | ||
1561 | build. | ||
1562 | </p></div><div class="section" title="2.8.3.4. Source Mirror(s)"><div class="titlepage"><div><div><h4 class="title" id="source-mirrors">2.8.3.4. Source Mirror(s)<span class="permalink"><a alt="Permalink" title="Permalink" href="#source-mirrors">¶</a></span></h4></div></div></div><p> | ||
1563 | Two kinds of mirrors exist: pre-mirrors and regular mirrors. | ||
1564 | The | ||
1565 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PREMIRRORS" target="_top"><code class="filename">PREMIRRORS</code></a> | ||
1566 | and | ||
1567 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-MIRRORS" target="_top"><code class="filename">MIRRORS</code></a> | ||
1568 | variables point to these, respectively. | ||
1569 | BitBake checks pre-mirrors before looking upstream for any | ||
1570 | source files. | ||
1571 | Pre-mirrors are appropriate when you have a shared directory | ||
1572 | that is not a directory defined by the | ||
1573 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DL_DIR" target="_top"><code class="filename">DL_DIR</code></a> | ||
1574 | variable. | ||
1575 | A Pre-mirror typically points to a shared directory that is | ||
1576 | local to your organization. | ||
1577 | </p><p> | ||
1578 | Regular mirrors can be any site across the Internet that is | ||
1579 | used as an alternative location for source code should the | ||
1580 | primary site not be functioning for some reason or another. | ||
1581 | </p></div></div><div class="section" title="2.8.4. Package Feeds"><div class="titlepage"><div><div><h3 class="title" id="package-feeds-dev-environment">2.8.4. Package Feeds<span class="permalink"><a alt="Permalink" title="Permalink" href="#package-feeds-dev-environment">¶</a></span></h3></div></div></div><p> | ||
1582 | When the OpenEmbedded build system generates an image or an SDK, | ||
1583 | it gets the packages from a package feed area located in the | ||
1584 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a>. | ||
1585 | The | ||
1586 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a> | ||
1587 | shows this package feeds area in the upper-right corner. | ||
1588 | </p><p> | ||
1589 | This section looks a little closer into the package feeds area used | ||
1590 | by the build system. | ||
1591 | Here is a more detailed look at the area: | ||
1592 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 540px"><td align="center"><img src="figures/package-feeds.png" align="middle" width="630" /></td></tr></table><p> | ||
1593 | </p><p> | ||
1594 | Package feeds are an intermediary step in the build process. | ||
1595 | The OpenEmbedded build system provides classes to generate | ||
1596 | different package types, and you specify which classes to enable | ||
1597 | through the | ||
1598 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_CLASSES" target="_top"><code class="filename">PACKAGE_CLASSES</code></a> | ||
1599 | variable. | ||
1600 | Before placing the packages into package feeds, | ||
1601 | the build process validates them with generated output quality | ||
1602 | assurance checks through the | ||
1603 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-insane" target="_top"><code class="filename">insane</code></a> | ||
1604 | class. | ||
1605 | </p><p> | ||
1606 | The package feed area resides in the Build Directory. | ||
1607 | The directory the build system uses to temporarily store packages | ||
1608 | is determined by a combination of variables and the particular | ||
1609 | package manager in use. | ||
1610 | See the "Package Feeds" box in the illustration and note the | ||
1611 | information to the right of that area. | ||
1612 | In particular, the following defines where package files are | ||
1613 | kept: | ||
1614 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR" target="_top"><code class="filename">DEPLOY_DIR</code></a>: | ||
1615 | Defined as <code class="filename">tmp/deploy</code> in the Build | ||
1616 | Directory. | ||
1617 | </p></li><li class="listitem"><p><code class="filename">DEPLOY_DIR_*</code>: | ||
1618 | Depending on the package manager used, the package type | ||
1619 | sub-folder. | ||
1620 | Given RPM, IPK, or DEB packaging and tarball creation, the | ||
1621 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR_RPM" target="_top"><code class="filename">DEPLOY_DIR_RPM</code></a>, | ||
1622 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR_IPK" target="_top"><code class="filename">DEPLOY_DIR_IPK</code></a>, | ||
1623 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR_DEB" target="_top"><code class="filename">DEPLOY_DIR_DEB</code></a>, | ||
1624 | or | ||
1625 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR_TAR" target="_top"><code class="filename">DEPLOY_DIR_TAR</code></a>, | ||
1626 | variables are used, respectively. | ||
1627 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_ARCH" target="_top"><code class="filename">PACKAGE_ARCH</code></a>: | ||
1628 | Defines architecture-specific sub-folders. | ||
1629 | For example, packages could exist for the i586 or qemux86 | ||
1630 | architectures. | ||
1631 | </p></li></ul></div><p> | ||
1632 | </p><p> | ||
1633 | BitBake uses the <code class="filename">do_package_write_*</code> tasks to | ||
1634 | generate packages and place them into the package holding area (e.g. | ||
1635 | <code class="filename">do_package_write_ipk</code> for IPK packages). | ||
1636 | See the | ||
1637 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package_write_deb" target="_top"><code class="filename">do_package_write_deb</code></a>", | ||
1638 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package_write_ipk" target="_top"><code class="filename">do_package_write_ipk</code></a>", | ||
1639 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package_write_rpm" target="_top"><code class="filename">do_package_write_rpm</code></a>", | ||
1640 | and | ||
1641 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package_write_tar" target="_top"><code class="filename">do_package_write_tar</code></a>" | ||
1642 | sections for additional information. | ||
1643 | As an example, consider a scenario where an IPK packaging manager | ||
1644 | is being used and package architecture support for both i586 | ||
1645 | and qemux86 exist. | ||
1646 | Packages for the i586 architecture are placed in | ||
1647 | <code class="filename">build/tmp/deploy/ipk/i586</code>, while packages for | ||
1648 | the qemux86 architecture are placed in | ||
1649 | <code class="filename">build/tmp/deploy/ipk/qemux86</code>. | ||
1650 | </p></div><div class="section" title="2.8.5. BitBake"><div class="titlepage"><div><div><h3 class="title" id="bitbake-dev-environment">2.8.5. BitBake<span class="permalink"><a alt="Permalink" title="Permalink" href="#bitbake-dev-environment">¶</a></span></h3></div></div></div><p> | ||
1651 | The OpenEmbedded build system uses | ||
1652 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#bitbake-term" target="_top">BitBake</a> | ||
1653 | to produce images. | ||
1654 | You can see from the | ||
1655 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>, | ||
1656 | the BitBake area consists of several functional areas. | ||
1657 | This section takes a closer look at each of those areas. | ||
1658 | </p><p> | ||
1659 | Separate documentation exists for the BitBake tool. | ||
1660 | See the | ||
1661 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#bitbake-user-manual" target="_top">BitBake User Manual</a> | ||
1662 | for reference material on BitBake. | ||
1663 | </p><div class="section" title="2.8.5.1. Source Fetching"><div class="titlepage"><div><div><h4 class="title" id="source-fetching-dev-environment">2.8.5.1. Source Fetching<span class="permalink"><a alt="Permalink" title="Permalink" href="#source-fetching-dev-environment">¶</a></span></h4></div></div></div><p> | ||
1664 | The first stages of building a recipe are to fetch and unpack | ||
1665 | the source code: | ||
1666 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="585"><tr style="height: 450px"><td align="center"><img src="figures/source-fetching.png" align="middle" width="585" /></td></tr></table><p> | ||
1667 | </p><p> | ||
1668 | The | ||
1669 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-fetch" target="_top"><code class="filename">do_fetch</code></a> | ||
1670 | and | ||
1671 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-unpack" target="_top"><code class="filename">do_unpack</code></a> | ||
1672 | tasks fetch the source files and unpack them into the work | ||
1673 | directory. | ||
1674 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1675 | For every local file (e.g. <code class="filename">file://</code>) | ||
1676 | that is part of a recipe's | ||
1677 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SRC_URI" target="_top"><code class="filename">SRC_URI</code></a> | ||
1678 | statement, the OpenEmbedded build system takes a checksum | ||
1679 | of the file for the recipe and inserts the checksum into | ||
1680 | the signature for the <code class="filename">do_fetch</code>. | ||
1681 | If any local file has been modified, the | ||
1682 | <code class="filename">do_fetch</code> task and all tasks that | ||
1683 | depend on it are re-executed. | ||
1684 | </div><p> | ||
1685 | By default, everything is accomplished in the | ||
1686 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a>, | ||
1687 | which has a defined structure. | ||
1688 | For additional general information on the Build Directory, | ||
1689 | see the | ||
1690 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#structure-core-build" target="_top"><code class="filename">build/</code></a>" | ||
1691 | section in the Yocto Project Reference Manual. | ||
1692 | </p><p> | ||
1693 | Unpacked source files are pointed to by the | ||
1694 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-S" target="_top"><code class="filename">S</code></a> | ||
1695 | variable. | ||
1696 | Each recipe has an area in the Build Directory where the | ||
1697 | unpacked source code resides. | ||
1698 | The name of that directory for any given recipe is defined from | ||
1699 | several different variables. | ||
1700 | You can see the variables that define these directories | ||
1701 | by looking at the figure: | ||
1702 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TMPDIR" target="_top"><code class="filename">TMPDIR</code></a> - | ||
1703 | The base directory where the OpenEmbedded build system | ||
1704 | performs all its work during the build. | ||
1705 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_ARCH" target="_top"><code class="filename">PACKAGE_ARCH</code></a> - | ||
1706 | The architecture of the built package or packages. | ||
1707 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TARGET_OS" target="_top"><code class="filename">TARGET_OS</code></a> - | ||
1708 | The operating system of the target device. | ||
1709 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PN" target="_top"><code class="filename">PN</code></a> - | ||
1710 | The name of the built package. | ||
1711 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PV" target="_top"><code class="filename">PV</code></a> - | ||
1712 | The version of the recipe used to build the package. | ||
1713 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PR" target="_top"><code class="filename">PR</code></a> - | ||
1714 | The revision of the recipe used to build the package. | ||
1715 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a> - | ||
1716 | The location within <code class="filename">TMPDIR</code> where | ||
1717 | a specific package is built. | ||
1718 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-S" target="_top"><code class="filename">S</code></a> - | ||
1719 | Contains the unpacked source files for a given recipe. | ||
1720 | </p></li></ul></div><p> | ||
1721 | </p></div><div class="section" title="2.8.5.2. Patching"><div class="titlepage"><div><div><h4 class="title" id="patching-dev-environment">2.8.5.2. Patching<span class="permalink"><a alt="Permalink" title="Permalink" href="#patching-dev-environment">¶</a></span></h4></div></div></div><p> | ||
1722 | Once source code is fetched and unpacked, BitBake locates | ||
1723 | patch files and applies them to the source files: | ||
1724 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 450px"><td align="center"><img src="figures/patching.png" align="middle" width="540" /></td></tr></table><p> | ||
1725 | </p><p> | ||
1726 | The | ||
1727 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-patch" target="_top"><code class="filename">do_patch</code></a> | ||
1728 | task processes recipes by | ||
1729 | using the | ||
1730 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SRC_URI" target="_top"><code class="filename">SRC_URI</code></a> | ||
1731 | variable to locate applicable patch files, which by default | ||
1732 | are <code class="filename">*.patch</code> or | ||
1733 | <code class="filename">*.diff</code> files, or any file if | ||
1734 | "apply=yes" is specified for the file in | ||
1735 | <code class="filename">SRC_URI</code>. | ||
1736 | </p><p> | ||
1737 | BitBake finds and applies multiple patches for a single recipe | ||
1738 | in the order in which it finds the patches. | ||
1739 | Patches are applied to the recipe's source files located in the | ||
1740 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-S" target="_top"><code class="filename">S</code></a> | ||
1741 | directory. | ||
1742 | </p><p> | ||
1743 | For more information on how the source directories are | ||
1744 | created, see the | ||
1745 | "<a class="link" href="#source-fetching-dev-environment" title="2.8.5.1. Source Fetching">Source Fetching</a>" | ||
1746 | section. | ||
1747 | </p></div><div class="section" title="2.8.5.3. Configuration and Compilation"><div class="titlepage"><div><div><h4 class="title" id="configuration-and-compilation-dev-environment">2.8.5.3. Configuration and Compilation<span class="permalink"><a alt="Permalink" title="Permalink" href="#configuration-and-compilation-dev-environment">¶</a></span></h4></div></div></div><p> | ||
1748 | After source code is patched, BitBake executes tasks that | ||
1749 | configure and compile the source code: | ||
1750 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 450px"><td align="center"><img src="figures/configuration-compile-autoreconf.png" align="middle" width="630" /></td></tr></table><p> | ||
1751 | </p><p> | ||
1752 | This step in the build process consists of three tasks: | ||
1753 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
1754 | <span class="emphasis"><em><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-prepare_recipe_sysroot" target="_top"><code class="filename">do_prepare_recipe_sysroot</code></a>:</em></span> | ||
1755 | This task sets up the two sysroots in | ||
1756 | <code class="filename">${</code><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a><code class="filename">}</code> | ||
1757 | (i.e. <code class="filename">recipe-sysroot</code> and | ||
1758 | <code class="filename">recipe-sysroot-native</code>) so that | ||
1759 | the sysroots contain the contents of the | ||
1760 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-populate_sysroot" target="_top"><code class="filename">do_populate_sysroot</code></a> | ||
1761 | tasks of the recipes on which the recipe | ||
1762 | containing the tasks depends. | ||
1763 | A sysroot exists for both the target and for the native | ||
1764 | binaries, which run on the host system. | ||
1765 | </p></li><li class="listitem"><p><span class="emphasis"><em><code class="filename">do_configure</code>:</em></span> | ||
1766 | This task configures the source by enabling and | ||
1767 | disabling any build-time and configuration options for | ||
1768 | the software being built. | ||
1769 | Configurations can come from the recipe itself as well | ||
1770 | as from an inherited class. | ||
1771 | Additionally, the software itself might configure itself | ||
1772 | depending on the target for which it is being built. | ||
1773 | </p><p>The configurations handled by the | ||
1774 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-configure" target="_top"><code class="filename">do_configure</code></a> | ||
1775 | task are specific | ||
1776 | to source code configuration for the source code | ||
1777 | being built by the recipe.</p><p>If you are using the | ||
1778 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-autotools" target="_top"><code class="filename">autotools</code></a> | ||
1779 | class, | ||
1780 | you can add additional configuration options by using | ||
1781 | the | ||
1782 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-EXTRA_OECONF" target="_top"><code class="filename">EXTRA_OECONF</code></a> | ||
1783 | or | ||
1784 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGECONFIG_CONFARGS" target="_top"><code class="filename">PACKAGECONFIG_CONFARGS</code></a> | ||
1785 | variables. | ||
1786 | For information on how this variable works within | ||
1787 | that class, see the | ||
1788 | <code class="filename">meta/classes/autotools.bbclass</code> file. | ||
1789 | </p></li><li class="listitem"><p><span class="emphasis"><em><code class="filename">do_compile</code>:</em></span> | ||
1790 | Once a configuration task has been satisfied, BitBake | ||
1791 | compiles the source using the | ||
1792 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-compile" target="_top"><code class="filename">do_compile</code></a> | ||
1793 | task. | ||
1794 | Compilation occurs in the directory pointed to by the | ||
1795 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-B" target="_top"><code class="filename">B</code></a> | ||
1796 | variable. | ||
1797 | Realize that the <code class="filename">B</code> directory is, by | ||
1798 | default, the same as the | ||
1799 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-S" target="_top"><code class="filename">S</code></a> | ||
1800 | directory.</p></li><li class="listitem"><p><span class="emphasis"><em><code class="filename">do_install</code>:</em></span> | ||
1801 | Once compilation is done, BitBake executes the | ||
1802 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-install" target="_top"><code class="filename">do_install</code></a> | ||
1803 | task. | ||
1804 | This task copies files from the <code class="filename">B</code> | ||
1805 | directory and places them in a holding area pointed to | ||
1806 | by the | ||
1807 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-D" target="_top"><code class="filename">D</code></a> | ||
1808 | variable.</p></li></ul></div><p> | ||
1809 | </p></div><div class="section" title="2.8.5.4. Package Splitting"><div class="titlepage"><div><div><h4 class="title" id="package-splitting-dev-environment">2.8.5.4. Package Splitting<span class="permalink"><a alt="Permalink" title="Permalink" href="#package-splitting-dev-environment">¶</a></span></h4></div></div></div><p> | ||
1810 | After source code is configured and compiled, the | ||
1811 | OpenEmbedded build system analyzes | ||
1812 | the results and splits the output into packages: | ||
1813 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="630"><tr style="height: 630px"><td align="center"><img src="figures/analysis-for-package-splitting.png" align="middle" width="630" /></td></tr></table><p> | ||
1814 | </p><p> | ||
1815 | The | ||
1816 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a> | ||
1817 | and | ||
1818 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-packagedata" target="_top"><code class="filename">do_packagedata</code></a> | ||
1819 | tasks combine to analyze | ||
1820 | the files found in the | ||
1821 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-D" target="_top"><code class="filename">D</code></a> directory | ||
1822 | and split them into subsets based on available packages and | ||
1823 | files. | ||
1824 | The analyzing process involves the following as well as other | ||
1825 | items: splitting out debugging symbols, | ||
1826 | looking at shared library dependencies between packages, | ||
1827 | and looking at package relationships. | ||
1828 | The <code class="filename">do_packagedata</code> task creates package | ||
1829 | metadata based on the analysis such that the | ||
1830 | OpenEmbedded build system can generate the final packages. | ||
1831 | Working, staged, and intermediate results of the analysis | ||
1832 | and package splitting process use these areas: | ||
1833 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PKGD" target="_top"><code class="filename">PKGD</code></a> - | ||
1834 | The destination directory for packages before they are | ||
1835 | split. | ||
1836 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PKGDATA_DIR" target="_top"><code class="filename">PKGDATA_DIR</code></a> - | ||
1837 | A shared, global-state directory that holds data | ||
1838 | generated during the packaging process. | ||
1839 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PKGDESTWORK" target="_top"><code class="filename">PKGDESTWORK</code></a> - | ||
1840 | A temporary work area used by the | ||
1841 | <code class="filename">do_package</code> task. | ||
1842 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PKGDEST" target="_top"><code class="filename">PKGDEST</code></a> - | ||
1843 | The parent directory for packages after they have | ||
1844 | been split. | ||
1845 | </p></li></ul></div><p> | ||
1846 | The <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-FILES" target="_top"><code class="filename">FILES</code></a> | ||
1847 | variable defines the files that go into each package in | ||
1848 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGES" target="_top"><code class="filename">PACKAGES</code></a>. | ||
1849 | If you want details on how this is accomplished, you can | ||
1850 | look at the | ||
1851 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-package" target="_top"><code class="filename">package</code></a> | ||
1852 | class. | ||
1853 | </p><p> | ||
1854 | Depending on the type of packages being created (RPM, DEB, or | ||
1855 | IPK), the <code class="filename">do_package_write_*</code> task | ||
1856 | creates the actual packages and places them in the | ||
1857 | Package Feed area, which is | ||
1858 | <code class="filename">${TMPDIR}/deploy</code>. | ||
1859 | You can see the | ||
1860 | "<a class="link" href="#package-feeds-dev-environment" title="2.8.4. Package Feeds">Package Feeds</a>" | ||
1861 | section for more detail on that part of the build process. | ||
1862 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
1863 | Support for creating feeds directly from the | ||
1864 | <code class="filename">deploy/*</code> directories does not exist. | ||
1865 | Creating such feeds usually requires some kind of feed | ||
1866 | maintenance mechanism that would upload the new packages | ||
1867 | into an official package feed (e.g. the | ||
1868 | Ångström distribution). | ||
1869 | This functionality is highly distribution-specific | ||
1870 | and thus is not provided out of the box. | ||
1871 | </div><p> | ||
1872 | </p></div><div class="section" title="2.8.5.5. Image Generation"><div class="titlepage"><div><div><h4 class="title" id="image-generation-dev-environment">2.8.5.5. Image Generation<span class="permalink"><a alt="Permalink" title="Permalink" href="#image-generation-dev-environment">¶</a></span></h4></div></div></div><p> | ||
1873 | Once packages are split and stored in the Package Feeds area, | ||
1874 | the OpenEmbedded build system uses BitBake to generate the | ||
1875 | root filesystem image: | ||
1876 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 630px"><td align="center"><img src="figures/image-generation.png" align="middle" width="540" /></td></tr></table><p> | ||
1877 | </p><p> | ||
1878 | The image generation process consists of several stages and | ||
1879 | depends on several tasks and variables. | ||
1880 | The | ||
1881 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-rootfs" target="_top"><code class="filename">do_rootfs</code></a> | ||
1882 | task creates the root filesystem (file and directory structure) | ||
1883 | for an image. | ||
1884 | This task uses several key variables to help create the list | ||
1885 | of packages to actually install: | ||
1886 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_INSTALL" target="_top"><code class="filename">IMAGE_INSTALL</code></a>: | ||
1887 | Lists out the base set of packages to install from | ||
1888 | the Package Feeds area.</p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_EXCLUDE" target="_top"><code class="filename">PACKAGE_EXCLUDE</code></a>: | ||
1889 | Specifies packages that should not be installed. | ||
1890 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_FEATURES" target="_top"><code class="filename">IMAGE_FEATURES</code></a>: | ||
1891 | Specifies features to include in the image. | ||
1892 | Most of these features map to additional packages for | ||
1893 | installation.</p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_CLASSES" target="_top"><code class="filename">PACKAGE_CLASSES</code></a>: | ||
1894 | Specifies the package backend to use and consequently | ||
1895 | helps determine where to locate packages within the | ||
1896 | Package Feeds area.</p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_LINGUAS" target="_top"><code class="filename">IMAGE_LINGUAS</code></a>: | ||
1897 | Determines the language(s) for which additional | ||
1898 | language support packages are installed. | ||
1899 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_INSTALL" target="_top"><code class="filename">PACKAGE_INSTALL</code></a>: | ||
1900 | The final list of packages passed to the package manager | ||
1901 | for installation into the image. | ||
1902 | </p></li></ul></div><p> | ||
1903 | </p><p> | ||
1904 | With | ||
1905 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_ROOTFS" target="_top"><code class="filename">IMAGE_ROOTFS</code></a> | ||
1906 | pointing to the location of the filesystem under construction and | ||
1907 | the <code class="filename">PACKAGE_INSTALL</code> variable providing the | ||
1908 | final list of packages to install, the root file system is | ||
1909 | created. | ||
1910 | </p><p> | ||
1911 | Package installation is under control of the package manager | ||
1912 | (e.g. dnf/rpm, opkg, or apt/dpkg) regardless of whether or | ||
1913 | not package management is enabled for the target. | ||
1914 | At the end of the process, if package management is not | ||
1915 | enabled for the target, the package manager's data files | ||
1916 | are deleted from the root filesystem. | ||
1917 | As part of the final stage of package installation, postinstall | ||
1918 | scripts that are part of the packages are run. | ||
1919 | Any scripts that fail to run | ||
1920 | on the build host are run on the target when the target system | ||
1921 | is first booted. | ||
1922 | If you are using a | ||
1923 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#creating-a-read-only-root-filesystem" target="_top">read-only root filesystem</a>, | ||
1924 | all the post installation scripts must succeed during the | ||
1925 | package installation phase since the root filesystem is | ||
1926 | read-only. | ||
1927 | </p><p> | ||
1928 | The final stages of the <code class="filename">do_rootfs</code> task | ||
1929 | handle post processing. | ||
1930 | Post processing includes creation of a manifest file and | ||
1931 | optimizations. | ||
1932 | </p><p> | ||
1933 | The manifest file (<code class="filename">.manifest</code>) resides | ||
1934 | in the same directory as the root filesystem image. | ||
1935 | This file lists out, line-by-line, the installed packages. | ||
1936 | The manifest file is useful for the | ||
1937 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-testimage*" target="_top"><code class="filename">testimage</code></a> | ||
1938 | class, for example, to determine whether or not to run | ||
1939 | specific tests. | ||
1940 | See the | ||
1941 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_MANIFEST" target="_top"><code class="filename">IMAGE_MANIFEST</code></a> | ||
1942 | variable for additional information. | ||
1943 | </p><p> | ||
1944 | Optimizing processes run across the image include | ||
1945 | <code class="filename">mklibs</code>, <code class="filename">prelink</code>, | ||
1946 | and any other post-processing commands as defined by the | ||
1947 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-ROOTFS_POSTPROCESS_COMMAND" target="_top"><code class="filename">ROOTFS_POSTPROCESS_COMMAND</code></a> | ||
1948 | variable. | ||
1949 | The <code class="filename">mklibs</code> process optimizes the size | ||
1950 | of the libraries, while the | ||
1951 | <code class="filename">prelink</code> process optimizes the dynamic | ||
1952 | linking of shared libraries to reduce start up time of | ||
1953 | executables. | ||
1954 | </p><p> | ||
1955 | After the root filesystem is built, processing begins on | ||
1956 | the image through the | ||
1957 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-image" target="_top"><code class="filename">do_image</code></a> | ||
1958 | task. | ||
1959 | The build system runs any pre-processing commands as defined | ||
1960 | by the | ||
1961 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_PREPROCESS_COMMAND" target="_top"><code class="filename">IMAGE_PREPROCESS_COMMAND</code></a> | ||
1962 | variable. | ||
1963 | This variable specifies a list of functions to call before | ||
1964 | the OpenEmbedded build system creates the final image output | ||
1965 | files. | ||
1966 | </p><p> | ||
1967 | The OpenEmbedded build system dynamically creates | ||
1968 | <code class="filename">do_image_*</code> tasks as needed, based | ||
1969 | on the image types specified in the | ||
1970 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_FSTYPES" target="_top"><code class="filename">IMAGE_FSTYPES</code></a> | ||
1971 | variable. | ||
1972 | The process turns everything into an image file or a set of | ||
1973 | image files and compresses the root filesystem image to reduce | ||
1974 | the overall size of the image. | ||
1975 | The formats used for the root filesystem depend on the | ||
1976 | <code class="filename">IMAGE_FSTYPES</code> variable. | ||
1977 | </p><p> | ||
1978 | As an example, a dynamically created task when creating a | ||
1979 | particular image <em class="replaceable"><code>type</code></em> would take the | ||
1980 | following form: | ||
1981 | </p><pre class="literallayout"> | ||
1982 | do_image_<em class="replaceable"><code>type</code></em>[depends] | ||
1983 | </pre><p> | ||
1984 | So, if the <em class="replaceable"><code>type</code></em> as specified by the | ||
1985 | <code class="filename">IMAGE_FSTYPES</code> were | ||
1986 | <code class="filename">ext4</code>, the dynamically generated task | ||
1987 | would be as follows: | ||
1988 | </p><pre class="literallayout"> | ||
1989 | do_image_ext4[depends] | ||
1990 | </pre><p> | ||
1991 | </p><p> | ||
1992 | The final task involved in image creation is the | ||
1993 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-image-complete" target="_top"><code class="filename">do_image_complete</code></a> | ||
1994 | task. | ||
1995 | This task completes the image by applying any image | ||
1996 | post processing as defined through the | ||
1997 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_POSTPROCESS_COMMAND" target="_top"><code class="filename">IMAGE_POSTPROCESS_COMMAND</code></a> | ||
1998 | variable. | ||
1999 | The variable specifies a list of functions to call once the | ||
2000 | OpenEmbedded build system has created the final image output | ||
2001 | files. | ||
2002 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2003 | The entire image generation process is run under Pseudo. | ||
2004 | Running under Pseudo ensures that the files in the root | ||
2005 | filesystem have correct ownership. | ||
2006 | </div></div><div class="section" title="2.8.5.6. SDK Generation"><div class="titlepage"><div><div><h4 class="title" id="sdk-generation-dev-environment">2.8.5.6. SDK Generation<span class="permalink"><a alt="Permalink" title="Permalink" href="#sdk-generation-dev-environment">¶</a></span></h4></div></div></div><p> | ||
2007 | The OpenEmbedded build system uses BitBake to generate the | ||
2008 | Software Development Kit (SDK) installer script for both the | ||
2009 | standard and extensible SDKs: | ||
2010 | <img src="figures/sdk-generation.png" align="middle" /> | ||
2011 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2012 | For more information on the cross-development toolchain | ||
2013 | generation, see the | ||
2014 | "<a class="link" href="#cross-development-toolchain-generation" title="3.2. Cross-Development Toolchain Generation">Cross-Development Toolchain Generation</a>" | ||
2015 | section. | ||
2016 | For information on advantages gained when building a | ||
2017 | cross-development toolchain using the | ||
2018 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-populate_sdk" target="_top"><code class="filename">do_populate_sdk</code></a> | ||
2019 | task, see the | ||
2020 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/sdk-manual/sdk-manual.html#sdk-building-an-sdk-installer" target="_top">Building an SDK Installer</a>" | ||
2021 | section in the Yocto Project Application Development and the | ||
2022 | Extensible Software Development Kit (SDK) manual. | ||
2023 | </div><p> | ||
2024 | Like image generation, the SDK script process consists of | ||
2025 | several stages and depends on many variables. | ||
2026 | The <code class="filename">do_populate_sdk</code> and | ||
2027 | <code class="filename">do_populate_sdk_ext</code> tasks use these | ||
2028 | key variables to help create the list of packages to actually | ||
2029 | install. | ||
2030 | For information on the variables listed in the figure, see the | ||
2031 | "<a class="link" href="#sdk-dev-environment" title="2.8.7. Application Development SDK">Application Development SDK</a>" | ||
2032 | section. | ||
2033 | </p><p> | ||
2034 | The <code class="filename">do_populate_sdk</code> task helps create | ||
2035 | the standard SDK and handles two parts: a target part and a | ||
2036 | host part. | ||
2037 | The target part is the part built for the target hardware and | ||
2038 | includes libraries and headers. | ||
2039 | The host part is the part of the SDK that runs on the | ||
2040 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDKMACHINE" target="_top"><code class="filename">SDKMACHINE</code></a>. | ||
2041 | </p><p> | ||
2042 | The <code class="filename">do_populate_sdk_ext</code> task helps create | ||
2043 | the extensible SDK and handles host and target parts | ||
2044 | differently than its counter part does for the standard SDK. | ||
2045 | For the extensible SDK, the task encapsulates the build system, | ||
2046 | which includes everything needed (host and target) for the SDK. | ||
2047 | </p><p> | ||
2048 | Regardless of the type of SDK being constructed, the | ||
2049 | tasks perform some cleanup after which a cross-development | ||
2050 | environment setup script and any needed configuration files | ||
2051 | are created. | ||
2052 | The final output is the Cross-development | ||
2053 | toolchain installation script (<code class="filename">.sh</code> file), | ||
2054 | which includes the environment setup script. | ||
2055 | </p></div><div class="section" title="2.8.5.7. Stamp Files and the Rerunning of Tasks"><div class="titlepage"><div><div><h4 class="title" id="stamp-files-and-the-rerunning-of-tasks">2.8.5.7. Stamp Files and the Rerunning of Tasks<span class="permalink"><a alt="Permalink" title="Permalink" href="#stamp-files-and-the-rerunning-of-tasks">¶</a></span></h4></div></div></div><p> | ||
2056 | For each task that completes successfully, BitBake writes a | ||
2057 | stamp file into the | ||
2058 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-STAMPS_DIR" target="_top"><code class="filename">STAMPS_DIR</code></a> | ||
2059 | directory. | ||
2060 | The beginning of the stamp file's filename is determined by the | ||
2061 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-STAMP" target="_top"><code class="filename">STAMP</code></a> | ||
2062 | variable, and the end of the name consists of the task's name | ||
2063 | and current | ||
2064 | <a class="link" href="#overview-checksums" title="3.3.2. Checksums (Signatures)">input checksum</a>. | ||
2065 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2066 | This naming scheme assumes that | ||
2067 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#var-BB_SIGNATURE_HANDLER" target="_top"><code class="filename">BB_SIGNATURE_HANDLER</code></a> | ||
2068 | is "OEBasicHash", which is almost always the case in | ||
2069 | current OpenEmbedded. | ||
2070 | </div><p> | ||
2071 | To determine if a task needs to be rerun, BitBake checks if a | ||
2072 | stamp file with a matching input checksum exists for the task. | ||
2073 | If such a stamp file exists, the task's output is assumed to | ||
2074 | exist and still be valid. | ||
2075 | If the file does not exist, the task is rerun. | ||
2076 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p>The stamp mechanism is more general than the shared | ||
2077 | state (sstate) cache mechanism described in the | ||
2078 | "<a class="link" href="#setscene-tasks-and-shared-state" title="2.8.5.8. Setscene Tasks and Shared State">Setscene Tasks and Shared State</a>" | ||
2079 | section. | ||
2080 | BitBake avoids rerunning any task that has a valid | ||
2081 | stamp file, not just tasks that can be accelerated through | ||
2082 | the sstate cache.</p><p>However, you should realize that stamp files only | ||
2083 | serve as a marker that some work has been done and that | ||
2084 | these files do not record task output. | ||
2085 | The actual task output would usually be somewhere in | ||
2086 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TMPDIR" target="_top"><code class="filename">TMPDIR</code></a> | ||
2087 | (e.g. in some recipe's | ||
2088 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a>.) | ||
2089 | What the sstate cache mechanism adds is a way to cache task | ||
2090 | output that can then be shared between build machines. | ||
2091 | </p></div><p> | ||
2092 | Since <code class="filename">STAMPS_DIR</code> is usually a subdirectory | ||
2093 | of <code class="filename">TMPDIR</code>, removing | ||
2094 | <code class="filename">TMPDIR</code> will also remove | ||
2095 | <code class="filename">STAMPS_DIR</code>, which means tasks will | ||
2096 | properly be rerun to repopulate <code class="filename">TMPDIR</code>. | ||
2097 | </p><p> | ||
2098 | If you want some task to always be considered "out of date", | ||
2099 | you can mark it with the | ||
2100 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#variable-flags" target="_top"><code class="filename">nostamp</code></a> | ||
2101 | varflag. | ||
2102 | If some other task depends on such a task, then that task will | ||
2103 | also always be considered out of date, which might not be what | ||
2104 | you want. | ||
2105 | </p><p> | ||
2106 | For details on how to view information about a task's | ||
2107 | signature, see the | ||
2108 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#dev-viewing-task-variable-dependencies" target="_top">Viewing Task Variable Dependencies</a>" | ||
2109 | section in the Yocto Project Development Tasks Manual. | ||
2110 | </p></div><div class="section" title="2.8.5.8. Setscene Tasks and Shared State"><div class="titlepage"><div><div><h4 class="title" id="setscene-tasks-and-shared-state">2.8.5.8. Setscene Tasks and Shared State<span class="permalink"><a alt="Permalink" title="Permalink" href="#setscene-tasks-and-shared-state">¶</a></span></h4></div></div></div><p> | ||
2111 | The description of tasks so far assumes that BitBake needs to | ||
2112 | build everything and there are no prebuilt objects available. | ||
2113 | BitBake does support skipping tasks if prebuilt objects are | ||
2114 | available. | ||
2115 | These objects are usually made available in the form of a | ||
2116 | shared state (sstate) cache. | ||
2117 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2118 | For information on variables affecting sstate, see the | ||
2119 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SSTATE_DIR" target="_top"><code class="filename">SSTATE_DIR</code></a> | ||
2120 | and | ||
2121 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SSTATE_MIRRORS" target="_top"><code class="filename">SSTATE_MIRRORS</code></a> | ||
2122 | variables. | ||
2123 | </div><p> | ||
2124 | </p><p> | ||
2125 | The idea of a setscene task (i.e | ||
2126 | <code class="filename">do_</code><em class="replaceable"><code>taskname</code></em><code class="filename">_setscene</code>) | ||
2127 | is a version of the task where | ||
2128 | instead of building something, BitBake can skip to the end | ||
2129 | result and simply place a set of files into specific locations | ||
2130 | as needed. | ||
2131 | In some cases, it makes sense to have a setscene task variant | ||
2132 | (e.g. generating package files in the | ||
2133 | <code class="filename">do_package_write_*</code> task). | ||
2134 | In other cases, it does not make sense, (e.g. a | ||
2135 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-patch" target="_top"><code class="filename">do_patch</code></a> | ||
2136 | task or | ||
2137 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-unpack" target="_top"><code class="filename">do_unpack</code></a> | ||
2138 | task) since the work involved would be equal to or greater than | ||
2139 | the underlying task. | ||
2140 | </p><p> | ||
2141 | In the OpenEmbedded build system, the common tasks that have | ||
2142 | setscene variants are | ||
2143 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a>, | ||
2144 | <code class="filename">do_package_write_*</code>, | ||
2145 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-deploy" target="_top"><code class="filename">do_deploy</code></a>, | ||
2146 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-packagedata" target="_top"><code class="filename">do_packagedata</code></a>, | ||
2147 | and | ||
2148 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-populate_sysroot" target="_top"><code class="filename">do_populate_sysroot</code></a>. | ||
2149 | Notice that these are most of the tasks whose output is an | ||
2150 | end result. | ||
2151 | </p><p> | ||
2152 | The OpenEmbedded build system has knowledge of the relationship | ||
2153 | between these tasks and other tasks that precede them. | ||
2154 | For example, if BitBake runs | ||
2155 | <code class="filename">do_populate_sysroot_setscene</code> for | ||
2156 | something, there is little point in running any of the | ||
2157 | <code class="filename">do_fetch</code>, <code class="filename">do_unpack</code>, | ||
2158 | <code class="filename">do_patch</code>, | ||
2159 | <code class="filename">do_configure</code>, | ||
2160 | <code class="filename">do_compile</code>, and | ||
2161 | <code class="filename">do_install</code> tasks. | ||
2162 | However, if <code class="filename">do_package</code> needs to be run, | ||
2163 | BitBake would need to run those other tasks. | ||
2164 | </p><p> | ||
2165 | It becomes more complicated if everything can come from an | ||
2166 | sstate cache because some objects are simply not required at | ||
2167 | all. | ||
2168 | For example, you do not need a compiler or native tools, such | ||
2169 | as quilt, if there is nothing to compile or patch. | ||
2170 | If the <code class="filename">do_package_write_*</code> packages are | ||
2171 | available from sstate, BitBake does not need the | ||
2172 | <code class="filename">do_package</code> task data. | ||
2173 | </p><p> | ||
2174 | To handle all these complexities, BitBake runs in two phases. | ||
2175 | The first is the "setscene" stage. | ||
2176 | During this stage, BitBake first checks the sstate cache for | ||
2177 | any targets it is planning to build. | ||
2178 | BitBake does a fast check to see if the object exists rather | ||
2179 | than a complete download. | ||
2180 | If nothing exists, the second phase, which is the setscene | ||
2181 | stage, completes and the main build proceeds. | ||
2182 | </p><p> | ||
2183 | If objects are found in the sstate cache, the OpenEmbedded | ||
2184 | build system works backwards from the end targets specified | ||
2185 | by the user. | ||
2186 | For example, if an image is being built, the OpenEmbedded build | ||
2187 | system first looks for the packages needed for that image and | ||
2188 | the tools needed to construct an image. | ||
2189 | If those are available, the compiler is not needed. | ||
2190 | Thus, the compiler is not even downloaded. | ||
2191 | If something was found to be unavailable, or the download or | ||
2192 | setscene task fails, the OpenEmbedded build system then tries | ||
2193 | to install dependencies, such as the compiler, from the cache. | ||
2194 | </p><p> | ||
2195 | The availability of objects in the sstate cache is handled by | ||
2196 | the function specified by the | ||
2197 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#var-BB_HASHCHECK_FUNCTION" target="_top"><code class="filename">BB_HASHCHECK_FUNCTION</code></a> | ||
2198 | variable and returns a list of the objects that are available. | ||
2199 | The function specified by the | ||
2200 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#var-BB_SETSCENE_DEPVALID" target="_top"><code class="filename">BB_SETSCENE_DEPVALID</code></a> | ||
2201 | variable is the function that determines whether a given | ||
2202 | dependency needs to be followed, and whether for any given | ||
2203 | relationship the function needs to be passed. | ||
2204 | The function returns a True or False value. | ||
2205 | </p></div></div><div class="section" title="2.8.6. Images"><div class="titlepage"><div><div><h3 class="title" id="images-dev-environment">2.8.6. Images<span class="permalink"><a alt="Permalink" title="Permalink" href="#images-dev-environment">¶</a></span></h3></div></div></div><p> | ||
2206 | The images produced by the OpenEmbedded build system | ||
2207 | are compressed forms of the | ||
2208 | root filesystem that are ready to boot on a target device. | ||
2209 | You can see from the | ||
2210 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a> | ||
2211 | that BitBake output, in part, consists of images. | ||
2212 | This section is going to look more closely at this output: | ||
2213 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="495"><tr style="height: 495px"><td align="center"><img src="figures/images.png" align="middle" width="495" /></td></tr></table><p> | ||
2214 | </p><p> | ||
2215 | For a list of example images that the Yocto Project provides, | ||
2216 | see the | ||
2217 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-images" target="_top">Images</a>" | ||
2218 | chapter in the Yocto Project Reference Manual. | ||
2219 | </p><p> | ||
2220 | Images are written out to the | ||
2221 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a> | ||
2222 | inside the | ||
2223 | <code class="filename">tmp/deploy/images/<em class="replaceable"><code>machine</code></em>/</code> | ||
2224 | folder as shown in the figure. | ||
2225 | This folder contains any files expected to be loaded on the | ||
2226 | target device. | ||
2227 | The | ||
2228 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR" target="_top"><code class="filename">DEPLOY_DIR</code></a> | ||
2229 | variable points to the <code class="filename">deploy</code> directory, | ||
2230 | while the | ||
2231 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR_IMAGE" target="_top"><code class="filename">DEPLOY_DIR_IMAGE</code></a> | ||
2232 | variable points to the appropriate directory containing images for | ||
2233 | the current configuration. | ||
2234 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="filename"><em class="replaceable"><code>kernel-image</code></em></code>: | ||
2235 | A kernel binary file. | ||
2236 | The | ||
2237 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-KERNEL_IMAGETYPE" target="_top"><code class="filename">KERNEL_IMAGETYPE</code></a> | ||
2238 | variable setting determines the naming scheme for the | ||
2239 | kernel image file. | ||
2240 | Depending on that variable, the file could begin with | ||
2241 | a variety of naming strings. | ||
2242 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
2243 | directory can contain multiple image files for the | ||
2244 | machine.</p></li><li class="listitem"><p><code class="filename"><em class="replaceable"><code>root-filesystem-image</code></em></code>: | ||
2245 | Root filesystems for the target device (e.g. | ||
2246 | <code class="filename">*.ext3</code> or <code class="filename">*.bz2</code> | ||
2247 | files). | ||
2248 | The | ||
2249 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-IMAGE_FSTYPES" target="_top"><code class="filename">IMAGE_FSTYPES</code></a> | ||
2250 | variable setting determines the root filesystem image | ||
2251 | type. | ||
2252 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
2253 | directory can contain multiple root filesystems for the | ||
2254 | machine.</p></li><li class="listitem"><p><code class="filename"><em class="replaceable"><code>kernel-modules</code></em></code>: | ||
2255 | Tarballs that contain all the modules built for the kernel. | ||
2256 | Kernel module tarballs exist for legacy purposes and | ||
2257 | can be suppressed by setting the | ||
2258 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-MODULE_TARBALL_DEPLOY" target="_top"><code class="filename">MODULE_TARBALL_DEPLOY</code></a> | ||
2259 | variable to "0". | ||
2260 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
2261 | directory can contain multiple kernel module tarballs | ||
2262 | for the machine.</p></li><li class="listitem"><p><code class="filename"><em class="replaceable"><code>bootloaders</code></em></code>: | ||
2263 | Bootloaders supporting the image, if applicable to the | ||
2264 | target machine. | ||
2265 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
2266 | directory can contain multiple bootloaders for the | ||
2267 | machine.</p></li><li class="listitem"><p><code class="filename"><em class="replaceable"><code>symlinks</code></em></code>: | ||
2268 | The <code class="filename">deploy/images/<em class="replaceable"><code>machine</code></em></code> | ||
2269 | folder contains | ||
2270 | a symbolic link that points to the most recently built file | ||
2271 | for each machine. | ||
2272 | These links might be useful for external scripts that | ||
2273 | need to obtain the latest version of each file. | ||
2274 | </p></li></ul></div><p> | ||
2275 | </p></div><div class="section" title="2.8.7. Application Development SDK"><div class="titlepage"><div><div><h3 class="title" id="sdk-dev-environment">2.8.7. Application Development SDK<span class="permalink"><a alt="Permalink" title="Permalink" href="#sdk-dev-environment">¶</a></span></h3></div></div></div><p> | ||
2276 | In the | ||
2277 | <a class="link" href="#general-yocto-environment-figure">general Yocto Project Development Environment figure</a>, | ||
2278 | the output labeled "Application Development SDK" represents an | ||
2279 | SDK. | ||
2280 | The SDK generation process differs depending on whether you build | ||
2281 | a standard SDK | ||
2282 | (e.g. <code class="filename">bitbake -c populate_sdk</code> <em class="replaceable"><code>imagename</code></em>) | ||
2283 | or an extensible SDK | ||
2284 | (e.g. <code class="filename">bitbake -c populate_sdk_ext</code> <em class="replaceable"><code>imagename</code></em>). | ||
2285 | This section is going to take a closer look at this output: | ||
2286 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="810"><tr style="height: 653px"><td align="center"><img src="figures/sdk.png" align="middle" width="810" /></td></tr></table><p> | ||
2287 | </p><p> | ||
2288 | The specific form of this output is a self-extracting | ||
2289 | SDK installer (<code class="filename">*.sh</code>) that, when run, | ||
2290 | installs the SDK, which consists of a cross-development | ||
2291 | toolchain, a set of libraries and headers, and an SDK | ||
2292 | environment setup script. | ||
2293 | Running this installer essentially sets up your | ||
2294 | cross-development environment. | ||
2295 | You can think of the cross-toolchain as the "host" | ||
2296 | part because it runs on the SDK machine. | ||
2297 | You can think of the libraries and headers as the "target" | ||
2298 | part because they are built for the target hardware. | ||
2299 | The environment setup script is added so that you can initialize | ||
2300 | the environment before using the tools. | ||
2301 | </p><div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Notes</h3><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2302 | The Yocto Project supports several methods by which you can | ||
2303 | set up this cross-development environment. | ||
2304 | These methods include downloading pre-built SDK installers | ||
2305 | or building and installing your own SDK installer. | ||
2306 | </p></li><li class="listitem"><p> | ||
2307 | For background information on cross-development toolchains | ||
2308 | in the Yocto Project development environment, see the | ||
2309 | "<a class="link" href="#cross-development-toolchain-generation" title="3.2. Cross-Development Toolchain Generation">Cross-Development Toolchain Generation</a>" | ||
2310 | section. | ||
2311 | </p></li><li class="listitem"><p> | ||
2312 | For information on setting up a cross-development | ||
2313 | environment, see the | ||
2314 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/sdk-manual/sdk-manual.html" target="_top">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)</a> | ||
2315 | manual. | ||
2316 | </p></li></ul></div></div><p> | ||
2317 | Once built, the SDK installers are written out to the | ||
2318 | <code class="filename">deploy/sdk</code> folder inside the | ||
2319 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a> | ||
2320 | as shown in the figure at the beginning of this section. | ||
2321 | Depending on the type of SDK, several variables exist that help | ||
2322 | configure these files. | ||
2323 | The following list shows the variables associated with a standard | ||
2324 | SDK: | ||
2325 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR" target="_top"><code class="filename">DEPLOY_DIR</code></a>: | ||
2326 | Points to the <code class="filename">deploy</code> | ||
2327 | directory.</p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDKMACHINE" target="_top"><code class="filename">SDKMACHINE</code></a>: | ||
2328 | Specifies the architecture of the machine | ||
2329 | on which the cross-development tools are run to | ||
2330 | create packages for the target hardware. | ||
2331 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDKIMAGE_FEATURES" target="_top"><code class="filename">SDKIMAGE_FEATURES</code></a>: | ||
2332 | Lists the features to include in the "target" part | ||
2333 | of the SDK. | ||
2334 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TOOLCHAIN_HOST_TASK" target="_top"><code class="filename">TOOLCHAIN_HOST_TASK</code></a>: | ||
2335 | Lists packages that make up the host | ||
2336 | part of the SDK (i.e. the part that runs on | ||
2337 | the <code class="filename">SDKMACHINE</code>). | ||
2338 | When you use | ||
2339 | <code class="filename">bitbake -c populate_sdk <em class="replaceable"><code>imagename</code></em></code> | ||
2340 | to create the SDK, a set of default packages | ||
2341 | apply. | ||
2342 | This variable allows you to add more packages. | ||
2343 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TOOLCHAIN_TARGET_TASK" target="_top"><code class="filename">TOOLCHAIN_TARGET_TASK</code></a>: | ||
2344 | Lists packages that make up the target part | ||
2345 | of the SDK (i.e. the part built for the | ||
2346 | target hardware). | ||
2347 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDKPATH" target="_top"><code class="filename">SDKPATH</code></a>: | ||
2348 | Defines the default SDK installation path offered by the | ||
2349 | installation script. | ||
2350 | </p></li></ul></div><p> | ||
2351 | This next list, shows the variables associated with an extensible | ||
2352 | SDK: | ||
2353 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPLOY_DIR" target="_top"><code class="filename">DEPLOY_DIR</code></a>: | ||
2354 | Points to the <code class="filename">deploy</code> directory. | ||
2355 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_EXT_TYPE" target="_top"><code class="filename">SDK_EXT_TYPE</code></a>: | ||
2356 | Controls whether or not shared state artifacts are copied | ||
2357 | into the extensible SDK. | ||
2358 | By default, all required shared state artifacts are copied | ||
2359 | into the SDK. | ||
2360 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_INCLUDE_PKGDATA" target="_top"><code class="filename">SDK_INCLUDE_PKGDATA</code></a>: | ||
2361 | Specifies whether or not packagedata will be included in | ||
2362 | the extensible SDK for all recipes in the "world" target. | ||
2363 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_INCLUDE_TOOLCHAIN" target="_top"><code class="filename">SDK_INCLUDE_TOOLCHAIN</code></a>: | ||
2364 | Specifies whether or not the toolchain will be included | ||
2365 | when building the extensible SDK. | ||
2366 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_LOCAL_CONF_WHITELIST" target="_top"><code class="filename">SDK_LOCAL_CONF_WHITELIST</code></a>: | ||
2367 | A list of variables allowed through from the build system | ||
2368 | configuration into the extensible SDK configuration. | ||
2369 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_LOCAL_CONF_BLACKLIST" target="_top"><code class="filename">SDK_LOCAL_CONF_BLACKLIST</code></a>: | ||
2370 | A list of variables not allowed through from the build | ||
2371 | system configuration into the extensible SDK configuration. | ||
2372 | </p></li><li class="listitem"><p><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_INHERIT_BLACKLIST" target="_top"><code class="filename">SDK_INHERIT_BLACKLIST</code></a>: | ||
2373 | A list of classes to remove from the | ||
2374 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-INHERIT" target="_top"><code class="filename">INHERIT</code></a> | ||
2375 | value globally within the extensible SDK configuration. | ||
2376 | </p></li></ul></div><p> | ||
2377 | </p></div></div></div> | ||
2378 | |||
2379 | <div class="chapter" title="Chapter 3. Yocto Project Concepts" id="overview-concepts"><div class="titlepage"><div><div><h2 class="title">Chapter 3. Yocto Project Concepts<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-concepts">¶</a></span></h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="#yocto-project-components">3.1. Yocto Project Components</a></span></dt><dd><dl><dt><span class="section"><a href="#usingpoky-components-bitbake">3.1.1. BitBake</a></span></dt><dt><span class="section"><a href="#usingpoky-components-metadata">3.1.2. Metadata (Recipes)</a></span></dt><dt><span class="section"><a href="#metadata-virtual-providers">3.1.3. Metadata (Virtual Providers)</a></span></dt><dt><span class="section"><a href="#usingpoky-components-classes">3.1.4. Classes</a></span></dt><dt><span class="section"><a href="#usingpoky-components-configuration">3.1.5. Configuration</a></span></dt></dl></dd><dt><span class="section"><a href="#cross-development-toolchain-generation">3.2. Cross-Development Toolchain Generation</a></span></dt><dt><span class="section"><a href="#shared-state-cache">3.3. Shared State Cache</a></span></dt><dd><dl><dt><span class="section"><a href="#overall-architecture">3.3.1. Overall Architecture</a></span></dt><dt><span class="section"><a href="#overview-checksums">3.3.2. Checksums (Signatures)</a></span></dt><dt><span class="section"><a href="#shared-state">3.3.3. Shared State</a></span></dt><dt><span class="section"><a href="#tips-and-tricks">3.3.4. Tips and Tricks</a></span></dt></dl></dd><dt><span class="section"><a href="#automatically-added-runtime-dependencies">3.4. Automatically Added Runtime Dependencies</a></span></dt><dt><span class="section"><a href="#fakeroot-and-pseudo">3.5. Fakeroot and Pseudo</a></span></dt><dt><span class="section"><a href="#wayland">3.6. Wayland</a></span></dt><dd><dl><dt><span class="section"><a href="#wayland-support">3.6.1. Support</a></span></dt><dt><span class="section"><a href="#enabling-wayland-in-an-image">3.6.2. Enabling Wayland in an Image</a></span></dt><dt><span class="section"><a href="#running-weston">3.6.3. Running Weston</a></span></dt></dl></dd><dt><span class="section"><a href="#overview-licenses">3.7. Licenses</a></span></dt><dd><dl><dt><span class="section"><a href="#usingpoky-configuring-LIC_FILES_CHKSUM">3.7.1. Tracking License Changes</a></span></dt><dt><span class="section"><a href="#enabling-commercially-licensed-recipes">3.7.2. Enabling Commercially Licensed Recipes</a></span></dt></dl></dd><dt><span class="section"><a href="#x32">3.8. x32 psABI</a></span></dt></dl></div><p> | ||
2380 | This chapter describes concepts for various areas of the Yocto Project. | ||
2381 | Currently, topics include Yocto Project components, cross-development | ||
2382 | generation, shared state (sstate) cache, runtime dependencies, | ||
2383 | Pseudo and Fakeroot, x32 psABI, Wayland support, and Licenses. | ||
2384 | </p><div class="section" title="3.1. Yocto Project Components"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="yocto-project-components">3.1. Yocto Project Components<span class="permalink"><a alt="Permalink" title="Permalink" href="#yocto-project-components">¶</a></span></h2></div></div></div><p> | ||
2385 | The | ||
2386 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#bitbake-term" target="_top">BitBake</a> | ||
2387 | task executor together with various types of configuration files | ||
2388 | form the OpenEmbedded Core. | ||
2389 | This section overviews these components by describing their use and | ||
2390 | how they interact. | ||
2391 | </p><p> | ||
2392 | BitBake handles the parsing and execution of the data files. | ||
2393 | The data itself is of various types: | ||
2394 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2395 | <span class="emphasis"><em>Recipes:</em></span> | ||
2396 | Provides details about particular pieces of software. | ||
2397 | </p></li><li class="listitem"><p> | ||
2398 | <span class="emphasis"><em>Class Data:</em></span> | ||
2399 | Abstracts common build information (e.g. how to build a | ||
2400 | Linux kernel). | ||
2401 | </p></li><li class="listitem"><p> | ||
2402 | <span class="emphasis"><em>Configuration Data:</em></span> | ||
2403 | Defines machine-specific settings, policy decisions, and | ||
2404 | so forth. | ||
2405 | Configuration data acts as the glue to bind everything | ||
2406 | together. | ||
2407 | </p></li></ul></div><p> | ||
2408 | </p><p> | ||
2409 | BitBake knows how to combine multiple data sources together and | ||
2410 | refers to each data source as a layer. | ||
2411 | For information on layers, see the | ||
2412 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#understanding-and-creating-layers" target="_top">Understanding and Creating Layers</a>" | ||
2413 | section of the Yocto Project Development Tasks Manual. | ||
2414 | </p><p> | ||
2415 | Following are some brief details on these core components. | ||
2416 | For additional information on how these components interact during | ||
2417 | a build, see the | ||
2418 | "<a class="link" href="#development-concepts" title="2.8. Development Concepts">Development Concepts</a>" | ||
2419 | section. | ||
2420 | </p><div class="section" title="3.1.1. BitBake"><div class="titlepage"><div><div><h3 class="title" id="usingpoky-components-bitbake">3.1.1. BitBake<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-components-bitbake">¶</a></span></h3></div></div></div><p> | ||
2421 | BitBake is the tool at the heart of the OpenEmbedded build | ||
2422 | system and is responsible for parsing the | ||
2423 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#metadata" target="_top">Metadata</a>, | ||
2424 | generating a list of tasks from it, and then executing those | ||
2425 | tasks. | ||
2426 | </p><p> | ||
2427 | This section briefly introduces BitBake. | ||
2428 | If you want more information on BitBake, see the | ||
2429 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#bitbake-user-manual" target="_top">BitBake User Manual</a>. | ||
2430 | </p><p> | ||
2431 | To see a list of the options BitBake supports, use either of | ||
2432 | the following commands: | ||
2433 | </p><pre class="literallayout"> | ||
2434 | $ bitbake -h | ||
2435 | $ bitbake --help | ||
2436 | </pre><p> | ||
2437 | </p><p> | ||
2438 | The most common usage for BitBake is | ||
2439 | <code class="filename">bitbake <em class="replaceable"><code>packagename</code></em></code>, | ||
2440 | where <code class="filename">packagename</code> is the name of the | ||
2441 | package you want to build (referred to as the "target" in this | ||
2442 | manual). | ||
2443 | The target often equates to the first part of a recipe's | ||
2444 | filename (e.g. "foo" for a recipe named | ||
2445 | <code class="filename">foo_1.3.0-r0.bb</code>). | ||
2446 | So, to process the | ||
2447 | <code class="filename">matchbox-desktop_1.2.3.bb</code> recipe file, you | ||
2448 | might type the following: | ||
2449 | </p><pre class="literallayout"> | ||
2450 | $ bitbake matchbox-desktop | ||
2451 | </pre><p> | ||
2452 | Several different versions of | ||
2453 | <code class="filename">matchbox-desktop</code> might exist. | ||
2454 | BitBake chooses the one selected by the distribution | ||
2455 | configuration. | ||
2456 | You can get more details about how BitBake chooses between | ||
2457 | different target versions and providers in the | ||
2458 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#bb-bitbake-preferences" target="_top">Preferences</a>" | ||
2459 | section of the BitBake User Manual. | ||
2460 | </p><p> | ||
2461 | BitBake also tries to execute any dependent tasks first. | ||
2462 | So for example, before building | ||
2463 | <code class="filename">matchbox-desktop</code>, BitBake would build a | ||
2464 | cross compiler and <code class="filename">glibc</code> if they had not | ||
2465 | already been built. | ||
2466 | </p><p> | ||
2467 | A useful BitBake option to consider is the | ||
2468 | <code class="filename">-k</code> or <code class="filename">--continue</code> | ||
2469 | option. | ||
2470 | This option instructs BitBake to try and continue processing | ||
2471 | the job as long as possible even after encountering an error. | ||
2472 | When an error occurs, the target that failed and those that | ||
2473 | depend on it cannot be remade. | ||
2474 | However, when you use this option other dependencies can | ||
2475 | still be processed. | ||
2476 | </p></div><div class="section" title="3.1.2. Metadata (Recipes)"><div class="titlepage"><div><div><h3 class="title" id="usingpoky-components-metadata">3.1.2. Metadata (Recipes)<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-components-metadata">¶</a></span></h3></div></div></div><p> | ||
2477 | Files that have the <code class="filename">.bb</code> suffix are | ||
2478 | "recipes" files. | ||
2479 | In general, a recipe contains information about a single piece | ||
2480 | of software. | ||
2481 | This information includes the location from which to download | ||
2482 | the unaltered source, any source patches to be applied to that | ||
2483 | source (if needed), which special configuration options to | ||
2484 | apply, how to compile the source files, and how to package the | ||
2485 | compiled output. | ||
2486 | </p><p> | ||
2487 | The term "package" is sometimes used to refer to recipes. | ||
2488 | However, since the word "package" is used for the packaged | ||
2489 | output from the OpenEmbedded build system (i.e. | ||
2490 | <code class="filename">.ipk</code> or <code class="filename">.deb</code> files), | ||
2491 | this document avoids using the term "package" when referring | ||
2492 | to recipes. | ||
2493 | </p></div><div class="section" title="3.1.3. Metadata (Virtual Providers)"><div class="titlepage"><div><div><h3 class="title" id="metadata-virtual-providers">3.1.3. Metadata (Virtual Providers)<span class="permalink"><a alt="Permalink" title="Permalink" href="#metadata-virtual-providers">¶</a></span></h3></div></div></div><p> | ||
2494 | Prior to the build, if you know that several different recipes | ||
2495 | provide the same functionality, you can use a virtual provider | ||
2496 | (i.e. <code class="filename">virtual/*</code>) as a placeholder for the | ||
2497 | actual provider. | ||
2498 | The actual provider would be determined at build time. | ||
2499 | In this case, you should add <code class="filename">virtual/*</code> | ||
2500 | to | ||
2501 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPENDS" target="_top"><code class="filename">DEPENDS</code></a>, | ||
2502 | rather than listing the specified provider. | ||
2503 | You would select the actual provider by setting the | ||
2504 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PREFERRED_PROVIDER" target="_top"><code class="filename">PREFERRED_PROVIDER</code></a> | ||
2505 | variable (i.e. | ||
2506 | <code class="filename">PREFERRED_PROVIDER_virtual/*</code>) | ||
2507 | in the build's configuration file (e.g. | ||
2508 | <code class="filename">poky/build/conf/local.conf</code>). | ||
2509 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2510 | Any recipe that PROVIDES a <code class="filename">virtual/*</code> | ||
2511 | item that is ultimately not selected through | ||
2512 | <code class="filename">PREFERRED_PROVIDER</code> does not get built. | ||
2513 | Preventing these recipes from building is usually the | ||
2514 | desired behavior since this mechanism's purpose is to | ||
2515 | select between mutually exclusive alternative providers. | ||
2516 | </div><p> | ||
2517 | </p><p> | ||
2518 | The following lists specific examples of virtual providers: | ||
2519 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2520 | <code class="filename">virtual/mesa</code>: | ||
2521 | Provides <code class="filename">gbm.pc</code>. | ||
2522 | </p></li><li class="listitem"><p> | ||
2523 | <code class="filename">virtual/egl</code>: | ||
2524 | Provides <code class="filename">egl.pc</code> and possibly | ||
2525 | <code class="filename">wayland-egl.pc</code>. | ||
2526 | </p></li><li class="listitem"><p> | ||
2527 | <code class="filename">virtual/libgl</code>: | ||
2528 | Provides <code class="filename">gl.pc</code> (i.e. libGL). | ||
2529 | </p></li><li class="listitem"><p> | ||
2530 | <code class="filename">virtual/libgles1</code>: | ||
2531 | Provides <code class="filename">glesv1_cm.pc</code> | ||
2532 | (i.e. libGLESv1_CM). | ||
2533 | </p></li><li class="listitem"><p> | ||
2534 | <code class="filename">virtual/libgles2</code>: | ||
2535 | Provides <code class="filename">glesv2.pc</code> | ||
2536 | (i.e. libGLESv2). | ||
2537 | </p></li></ul></div><p> | ||
2538 | </p></div><div class="section" title="3.1.4. Classes"><div class="titlepage"><div><div><h3 class="title" id="usingpoky-components-classes">3.1.4. Classes<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-components-classes">¶</a></span></h3></div></div></div><p> | ||
2539 | Class files (<code class="filename">.bbclass</code>) contain information | ||
2540 | that is useful to share between | ||
2541 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#metadata" target="_top">Metadata</a> | ||
2542 | files. | ||
2543 | An example is the | ||
2544 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-autotools" target="_top"><code class="filename">autotools</code></a> | ||
2545 | class, which contains common settings for any application that | ||
2546 | Autotools uses. | ||
2547 | The | ||
2548 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes" target="_top">Classes</a>" | ||
2549 | chapter in the Yocto Project Reference Manual provides | ||
2550 | details about classes and how to use them. | ||
2551 | </p></div><div class="section" title="3.1.5. Configuration"><div class="titlepage"><div><div><h3 class="title" id="usingpoky-components-configuration">3.1.5. Configuration<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-components-configuration">¶</a></span></h3></div></div></div><p> | ||
2552 | The configuration files (<code class="filename">.conf</code>) define | ||
2553 | various configuration variables that govern the OpenEmbedded | ||
2554 | build process. | ||
2555 | These files fall into several areas that define machine | ||
2556 | configuration options, distribution configuration options, | ||
2557 | compiler tuning options, general common configuration options, | ||
2558 | and user configuration options in | ||
2559 | <code class="filename">local.conf</code>, which is found in the | ||
2560 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a>. | ||
2561 | </p></div></div><div class="section" title="3.2. Cross-Development Toolchain Generation"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="cross-development-toolchain-generation">3.2. Cross-Development Toolchain Generation<span class="permalink"><a alt="Permalink" title="Permalink" href="#cross-development-toolchain-generation">¶</a></span></h2></div></div></div><p> | ||
2562 | The Yocto Project does most of the work for you when it comes to | ||
2563 | creating | ||
2564 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#cross-development-toolchain" target="_top">cross-development toolchains</a>. | ||
2565 | This section provides some technical background on how | ||
2566 | cross-development toolchains are created and used. | ||
2567 | For more information on toolchains, you can also see the | ||
2568 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/sdk-manual/sdk-manual.html" target="_top">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)</a> | ||
2569 | manual. | ||
2570 | </p><p> | ||
2571 | In the Yocto Project development environment, cross-development | ||
2572 | toolchains are used to build the image and applications that run | ||
2573 | on the target hardware. | ||
2574 | With just a few commands, the OpenEmbedded build system creates | ||
2575 | these necessary toolchains for you. | ||
2576 | </p><p> | ||
2577 | The following figure shows a high-level build environment regarding | ||
2578 | toolchain construction and use. | ||
2579 | </p><p> | ||
2580 | </p><table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="720"><tr style="height: 540px"><td align="center"><img src="figures/cross-development-toolchains.png" align="middle" width="720" /></td></tr></table><p> | ||
2581 | </p><p> | ||
2582 | Most of the work occurs on the Build Host. | ||
2583 | This is the machine used to build images and generally work within the | ||
2584 | the Yocto Project environment. | ||
2585 | When you run BitBake to create an image, the OpenEmbedded build system | ||
2586 | uses the host <code class="filename">gcc</code> compiler to bootstrap a | ||
2587 | cross-compiler named <code class="filename">gcc-cross</code>. | ||
2588 | The <code class="filename">gcc-cross</code> compiler is what BitBake uses to | ||
2589 | compile source files when creating the target image. | ||
2590 | You can think of <code class="filename">gcc-cross</code> simply as an | ||
2591 | automatically generated cross-compiler that is used internally within | ||
2592 | BitBake only. | ||
2593 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2594 | The extensible SDK does not use | ||
2595 | <code class="filename">gcc-cross-canadian</code> since this SDK | ||
2596 | ships a copy of the OpenEmbedded build system and the sysroot | ||
2597 | within it contains <code class="filename">gcc-cross</code>. | ||
2598 | </div><p> | ||
2599 | </p><p> | ||
2600 | The chain of events that occurs when <code class="filename">gcc-cross</code> is | ||
2601 | bootstrapped is as follows: | ||
2602 | </p><pre class="literallayout"> | ||
2603 | gcc -> binutils-cross -> gcc-cross-initial -> linux-libc-headers -> glibc-initial -> glibc -> gcc-cross -> gcc-runtime | ||
2604 | </pre><p> | ||
2605 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2606 | <code class="filename">gcc</code>: | ||
2607 | The build host's GNU Compiler Collection (GCC). | ||
2608 | </p></li><li class="listitem"><p> | ||
2609 | <code class="filename">binutils-cross</code>: | ||
2610 | The bare minimum binary utilities needed in order to run | ||
2611 | the <code class="filename">gcc-cross-initial</code> phase of the | ||
2612 | bootstrap operation. | ||
2613 | </p></li><li class="listitem"><p> | ||
2614 | <code class="filename">gcc-cross-initial</code>: | ||
2615 | An early stage of the bootstrap process for creating | ||
2616 | the cross-compiler. | ||
2617 | This stage builds enough of the <code class="filename">gcc-cross</code>, | ||
2618 | the C library, and other pieces needed to finish building the | ||
2619 | final cross-compiler in later stages. | ||
2620 | This tool is a "native" package (i.e. it is designed to run on | ||
2621 | the build host). | ||
2622 | </p></li><li class="listitem"><p> | ||
2623 | <code class="filename">linux-libc-headers</code>: | ||
2624 | Headers needed for the cross-compiler. | ||
2625 | </p></li><li class="listitem"><p> | ||
2626 | <code class="filename">glibc-initial</code>: | ||
2627 | An initial version of the Embedded GLIBC needed to bootstrap | ||
2628 | <code class="filename">glibc</code>. | ||
2629 | </p></li><li class="listitem"><p> | ||
2630 | <code class="filename">gcc-cross</code>: | ||
2631 | The final stage of the bootstrap process for the | ||
2632 | cross-compiler. | ||
2633 | This stage results in the actual cross-compiler that | ||
2634 | BitBake uses when it builds an image for a targeted | ||
2635 | device. | ||
2636 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2637 | If you are replacing this cross compiler toolchain | ||
2638 | with a custom version, you must replace | ||
2639 | <code class="filename">gcc-cross</code>. | ||
2640 | </div><p> | ||
2641 | This tool is also a "native" package (i.e. it is | ||
2642 | designed to run on the build host). | ||
2643 | </p></li><li class="listitem"><p> | ||
2644 | <code class="filename">gcc-runtime</code>: | ||
2645 | Runtime libraries resulting from the toolchain bootstrapping | ||
2646 | process. | ||
2647 | This tool produces a binary that consists of the | ||
2648 | runtime libraries need for the targeted device. | ||
2649 | </p></li></ul></div><p> | ||
2650 | </p><p> | ||
2651 | You can use the OpenEmbedded build system to build an installer for | ||
2652 | the relocatable SDK used to develop applications. | ||
2653 | When you run the installer, it installs the toolchain, which contains | ||
2654 | the development tools (e.g., the | ||
2655 | <code class="filename">gcc-cross-canadian</code>), | ||
2656 | <code class="filename">binutils-cross-canadian</code>, and other | ||
2657 | <code class="filename">nativesdk-*</code> tools, | ||
2658 | which are tools native to the SDK (i.e. native to | ||
2659 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDK_ARCH" target="_top"><code class="filename">SDK_ARCH</code></a>), | ||
2660 | you need to cross-compile and test your software. | ||
2661 | The figure shows the commands you use to easily build out this | ||
2662 | toolchain. | ||
2663 | This cross-development toolchain is built to execute on the | ||
2664 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDKMACHINE" target="_top"><code class="filename">SDKMACHINE</code></a>, | ||
2665 | which might or might not be the same | ||
2666 | machine as the Build Host. | ||
2667 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2668 | If your target architecture is supported by the Yocto Project, | ||
2669 | you can take advantage of pre-built images that ship with the | ||
2670 | Yocto Project and already contain cross-development toolchain | ||
2671 | installers. | ||
2672 | </div><p> | ||
2673 | </p><p> | ||
2674 | Here is the bootstrap process for the relocatable toolchain: | ||
2675 | </p><pre class="literallayout"> | ||
2676 | gcc -> binutils-crosssdk -> gcc-crosssdk-initial -> linux-libc-headers -> | ||
2677 | glibc-initial -> nativesdk-glibc -> gcc-crosssdk -> gcc-cross-canadian | ||
2678 | </pre><p> | ||
2679 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2680 | <code class="filename">gcc</code>: | ||
2681 | The build host's GNU Compiler Collection (GCC). | ||
2682 | </p></li><li class="listitem"><p> | ||
2683 | <code class="filename">binutils-crosssdk</code>: | ||
2684 | The bare minimum binary utilities needed in order to run | ||
2685 | the <code class="filename">gcc-crosssdk-initial</code> phase of the | ||
2686 | bootstrap operation. | ||
2687 | </p></li><li class="listitem"><p> | ||
2688 | <code class="filename">gcc-crosssdk-initial</code>: | ||
2689 | An early stage of the bootstrap process for creating | ||
2690 | the cross-compiler. | ||
2691 | This stage builds enough of the | ||
2692 | <code class="filename">gcc-crosssdk</code> and supporting pieces so that | ||
2693 | the final stage of the bootstrap process can produce the | ||
2694 | finished cross-compiler. | ||
2695 | This tool is a "native" binary that runs on the build host. | ||
2696 | </p></li><li class="listitem"><p> | ||
2697 | <code class="filename">linux-libc-headers</code>: | ||
2698 | Headers needed for the cross-compiler. | ||
2699 | </p></li><li class="listitem"><p> | ||
2700 | <code class="filename">glibc-initial</code>: | ||
2701 | An initial version of the Embedded GLIBC needed to bootstrap | ||
2702 | <code class="filename">nativesdk-glibc</code>. | ||
2703 | </p></li><li class="listitem"><p> | ||
2704 | <code class="filename">nativesdk-glibc</code>: | ||
2705 | The Embedded GLIBC needed to bootstrap the | ||
2706 | <code class="filename">gcc-crosssdk</code>. | ||
2707 | </p></li><li class="listitem"><p> | ||
2708 | <code class="filename">gcc-crosssdk</code>: | ||
2709 | The final stage of the bootstrap process for the | ||
2710 | relocatable cross-compiler. | ||
2711 | The <code class="filename">gcc-crosssdk</code> is a transitory compiler | ||
2712 | and never leaves the build host. | ||
2713 | Its purpose is to help in the bootstrap process to create the | ||
2714 | eventual relocatable <code class="filename">gcc-cross-canadian</code> | ||
2715 | compiler, which is relocatable. | ||
2716 | This tool is also a "native" package (i.e. it is | ||
2717 | designed to run on the build host). | ||
2718 | </p></li><li class="listitem"><p> | ||
2719 | <code class="filename">gcc-cross-canadian</code>: | ||
2720 | The final relocatable cross-compiler. | ||
2721 | When run on the | ||
2722 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SDKMACHINE" target="_top"><code class="filename">SDKMACHINE</code></a>, | ||
2723 | this tool | ||
2724 | produces executable code that runs on the target device. | ||
2725 | Only one cross-canadian compiler is produced per architecture | ||
2726 | since they can be targeted at different processor optimizations | ||
2727 | using configurations passed to the compiler through the | ||
2728 | compile commands. | ||
2729 | This circumvents the need for multiple compilers and thus | ||
2730 | reduces the size of the toolchains. | ||
2731 | </p></li></ul></div><p> | ||
2732 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2733 | For information on advantages gained when building a | ||
2734 | cross-development toolchain installer, see the | ||
2735 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/sdk-manual/sdk-manual.html#sdk-building-an-sdk-installer" target="_top">Building an SDK Installer</a>" | ||
2736 | section in the Yocto Project Application Development and the | ||
2737 | Extensible Software Development Kit (eSDK) manual. | ||
2738 | </div></div><div class="section" title="3.3. Shared State Cache"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="shared-state-cache">3.3. Shared State Cache<span class="permalink"><a alt="Permalink" title="Permalink" href="#shared-state-cache">¶</a></span></h2></div></div></div><p> | ||
2739 | By design, the OpenEmbedded build system builds everything from | ||
2740 | scratch unless BitBake can determine that parts do not need to be | ||
2741 | rebuilt. | ||
2742 | Fundamentally, building from scratch is attractive as it means all | ||
2743 | parts are built fresh and there is no possibility of stale data | ||
2744 | causing problems. | ||
2745 | When developers hit problems, they typically default back to | ||
2746 | building from scratch so they know the state of things from the | ||
2747 | start. | ||
2748 | </p><p> | ||
2749 | Building an image from scratch is both an advantage and a | ||
2750 | disadvantage to the process. | ||
2751 | As mentioned in the previous paragraph, building from scratch | ||
2752 | ensures that everything is current and starts from a known state. | ||
2753 | However, building from scratch also takes much longer as it | ||
2754 | generally means rebuilding things that do not necessarily need | ||
2755 | to be rebuilt. | ||
2756 | </p><p> | ||
2757 | The Yocto Project implements shared state code that supports | ||
2758 | incremental builds. | ||
2759 | The implementation of the shared state code answers the following | ||
2760 | questions that were fundamental roadblocks within the OpenEmbedded | ||
2761 | incremental build support system: | ||
2762 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2763 | What pieces of the system have changed and what pieces have | ||
2764 | not changed? | ||
2765 | </p></li><li class="listitem"><p> | ||
2766 | How are changed pieces of software removed and replaced? | ||
2767 | </p></li><li class="listitem"><p> | ||
2768 | How are pre-built components that do not need to be rebuilt | ||
2769 | from scratch used when they are available? | ||
2770 | </p></li></ul></div><p> | ||
2771 | </p><p> | ||
2772 | For the first question, the build system detects changes in the | ||
2773 | "inputs" to a given task by creating a checksum (or signature) of | ||
2774 | the task's inputs. | ||
2775 | If the checksum changes, the system assumes the inputs have changed | ||
2776 | and the task needs to be rerun. | ||
2777 | For the second question, the shared state (sstate) code tracks | ||
2778 | which tasks add which output to the build process. | ||
2779 | This means the output from a given task can be removed, upgraded | ||
2780 | or otherwise manipulated. | ||
2781 | The third question is partly addressed by the solution for the | ||
2782 | second question assuming the build system can fetch the sstate | ||
2783 | objects from remote locations and install them if they are deemed | ||
2784 | to be valid. | ||
2785 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2786 | The OpenEmbedded build system does not maintain | ||
2787 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PR" target="_top"><code class="filename">PR</code></a> | ||
2788 | information as part of the shared state packages. | ||
2789 | Consequently, considerations exist that affect maintaining | ||
2790 | shared state feeds. | ||
2791 | For information on how the OpenEmbedded build system | ||
2792 | works with packages and can track incrementing | ||
2793 | <code class="filename">PR</code> information, see the | ||
2794 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#automatically-incrementing-a-binary-package-revision-number" target="_top">Automatically Incrementing a Binary Package Revision Number</a>" | ||
2795 | section in the Yocto Project Development Tasks Manual. | ||
2796 | </div><p> | ||
2797 | </p><p> | ||
2798 | The rest of this section goes into detail about the overall | ||
2799 | incremental build architecture, the checksums (signatures), shared | ||
2800 | state, and some tips and tricks. | ||
2801 | </p><div class="section" title="3.3.1. Overall Architecture"><div class="titlepage"><div><div><h3 class="title" id="overall-architecture">3.3.1. Overall Architecture<span class="permalink"><a alt="Permalink" title="Permalink" href="#overall-architecture">¶</a></span></h3></div></div></div><p> | ||
2802 | When determining what parts of the system need to be built, | ||
2803 | BitBake works on a per-task basis rather than a per-recipe | ||
2804 | basis. | ||
2805 | You might wonder why using a per-task basis is preferred over | ||
2806 | a per-recipe basis. | ||
2807 | To help explain, consider having the IPK packaging backend | ||
2808 | enabled and then switching to DEB. | ||
2809 | In this case, the | ||
2810 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-install" target="_top"><code class="filename">do_install</code></a> | ||
2811 | and | ||
2812 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a> | ||
2813 | task outputs are still valid. | ||
2814 | However, with a per-recipe approach, the build would not | ||
2815 | include the <code class="filename">.deb</code> files. | ||
2816 | Consequently, you would have to invalidate the whole build and | ||
2817 | rerun it. | ||
2818 | Rerunning everything is not the best solution. | ||
2819 | Also, in this case, the core must be "taught" much about | ||
2820 | specific tasks. | ||
2821 | This methodology does not scale well and does not allow users | ||
2822 | to easily add new tasks in layers or as external recipes | ||
2823 | without touching the packaged-staging core. | ||
2824 | </p></div><div class="section" title="3.3.2. Checksums (Signatures)"><div class="titlepage"><div><div><h3 class="title" id="overview-checksums">3.3.2. Checksums (Signatures)<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-checksums">¶</a></span></h3></div></div></div><p> | ||
2825 | The shared state code uses a checksum, which is a unique | ||
2826 | signature of a task's inputs, to determine if a task needs to | ||
2827 | be run again. | ||
2828 | Because it is a change in a task's inputs that triggers a | ||
2829 | rerun, the process needs to detect all the inputs to a given | ||
2830 | task. | ||
2831 | For shell tasks, this turns out to be fairly easy because | ||
2832 | the build process generates a "run" shell script for each task | ||
2833 | and it is possible to create a checksum that gives you a good | ||
2834 | idea of when the task's data changes. | ||
2835 | </p><p> | ||
2836 | To complicate the problem, there are things that should not be | ||
2837 | included in the checksum. | ||
2838 | First, there is the actual specific build path of a given | ||
2839 | task - the | ||
2840 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a>. | ||
2841 | It does not matter if the work directory changes because it | ||
2842 | should not affect the output for target packages. | ||
2843 | Also, the build process has the objective of making native | ||
2844 | or cross packages relocatable. | ||
2845 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
2846 | Both native and cross packages run on the build host. | ||
2847 | However, cross packages generate output for the target | ||
2848 | architecture. | ||
2849 | </div><p> | ||
2850 | The checksum therefore needs to exclude | ||
2851 | <code class="filename">WORKDIR</code>. | ||
2852 | The simplistic approach for excluding the work directory is to | ||
2853 | set <code class="filename">WORKDIR</code> to some fixed value and | ||
2854 | create the checksum for the "run" script. | ||
2855 | </p><p> | ||
2856 | Another problem results from the "run" scripts containing | ||
2857 | functions that might or might not get called. | ||
2858 | The incremental build solution contains code that figures out | ||
2859 | dependencies between shell functions. | ||
2860 | This code is used to prune the "run" scripts down to the | ||
2861 | minimum set, thereby alleviating this problem and making the | ||
2862 | "run" scripts much more readable as a bonus. | ||
2863 | </p><p> | ||
2864 | So far we have solutions for shell scripts. | ||
2865 | What about Python tasks? | ||
2866 | The same approach applies even though these tasks are more | ||
2867 | difficult. | ||
2868 | The process needs to figure out what variables a Python | ||
2869 | function accesses and what functions it calls. | ||
2870 | Again, the incremental build solution contains code that first | ||
2871 | figures out the variable and function dependencies, and then | ||
2872 | creates a checksum for the data used as the input to the task. | ||
2873 | </p><p> | ||
2874 | Like the <code class="filename">WORKDIR</code> case, situations exist | ||
2875 | where dependencies should be ignored. | ||
2876 | For these cases, you can instruct the build process to | ||
2877 | ignore a dependency by using a line like the following: | ||
2878 | </p><pre class="literallayout"> | ||
2879 | PACKAGE_ARCHS[vardepsexclude] = "MACHINE" | ||
2880 | </pre><p> | ||
2881 | This example ensures that the | ||
2882 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PACKAGE_ARCHS" target="_top"><code class="filename">PACKAGE_ARCHS</code></a> | ||
2883 | variable does not depend on the value of | ||
2884 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-MACHINE" target="_top"><code class="filename">MACHINE</code></a>, | ||
2885 | even if it does reference it. | ||
2886 | </p><p> | ||
2887 | Equally, there are cases where we need to add dependencies | ||
2888 | BitBake is not able to find. | ||
2889 | You can accomplish this by using a line like the following: | ||
2890 | </p><pre class="literallayout"> | ||
2891 | PACKAGE_ARCHS[vardeps] = "MACHINE" | ||
2892 | </pre><p> | ||
2893 | This example explicitly adds the <code class="filename">MACHINE</code> | ||
2894 | variable as a dependency for | ||
2895 | <code class="filename">PACKAGE_ARCHS</code>. | ||
2896 | </p><p> | ||
2897 | Consider a case with in-line Python, for example, where | ||
2898 | BitBake is not able to figure out dependencies. | ||
2899 | When running in debug mode (i.e. using | ||
2900 | <code class="filename">-DDD</code>), BitBake produces output when it | ||
2901 | discovers something for which it cannot figure out dependencies. | ||
2902 | The Yocto Project team has currently not managed to cover | ||
2903 | those dependencies in detail and is aware of the need to fix | ||
2904 | this situation. | ||
2905 | </p><p> | ||
2906 | Thus far, this section has limited discussion to the direct | ||
2907 | inputs into a task. | ||
2908 | Information based on direct inputs is referred to as the | ||
2909 | "basehash" in the code. | ||
2910 | However, there is still the question of a task's indirect | ||
2911 | inputs - the things that were already built and present in the | ||
2912 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#build-directory" target="_top">Build Directory</a>. | ||
2913 | The checksum (or signature) for a particular task needs to add | ||
2914 | the hashes of all the tasks on which the particular task | ||
2915 | depends. | ||
2916 | Choosing which dependencies to add is a policy decision. | ||
2917 | However, the effect is to generate a master checksum that | ||
2918 | combines the basehash and the hashes of the task's | ||
2919 | dependencies. | ||
2920 | </p><p> | ||
2921 | At the code level, there are a variety of ways both the | ||
2922 | basehash and the dependent task hashes can be influenced. | ||
2923 | Within the BitBake configuration file, we can give BitBake | ||
2924 | some extra information to help it construct the basehash. | ||
2925 | The following statement effectively results in a list of | ||
2926 | global variable dependency excludes - variables never | ||
2927 | included in any checksum: | ||
2928 | </p><pre class="literallayout"> | ||
2929 | BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR \ | ||
2930 | SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM \ | ||
2931 | USER FILESPATH STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE PRSERV_HOST \ | ||
2932 | PRSERV_DUMPDIR PRSERV_DUMPFILE PRSERV_LOCKDOWN PARALLEL_MAKE \ | ||
2933 | CCACHE_DIR EXTERNAL_TOOLCHAIN CCACHE CCACHE_DISABLE LICENSE_PATH SDKPKGSUFFIX" | ||
2934 | </pre><p> | ||
2935 | The previous example excludes | ||
2936 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a> | ||
2937 | since that variable is actually constructed as a path within | ||
2938 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-TMPDIR" target="_top"><code class="filename">TMPDIR</code></a>, | ||
2939 | which is on the whitelist. | ||
2940 | </p><p> | ||
2941 | The rules for deciding which hashes of dependent tasks to | ||
2942 | include through dependency chains are more complex and are | ||
2943 | generally accomplished with a Python function. | ||
2944 | The code in <code class="filename">meta/lib/oe/sstatesig.py</code> shows | ||
2945 | two examples of this and also illustrates how you can insert | ||
2946 | your own policy into the system if so desired. | ||
2947 | This file defines the two basic signature generators | ||
2948 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#oe-core" target="_top">OE-Core</a> | ||
2949 | uses: "OEBasic" and "OEBasicHash". | ||
2950 | By default, there is a dummy "noop" signature handler enabled | ||
2951 | in BitBake. | ||
2952 | This means that behavior is unchanged from previous versions. | ||
2953 | OE-Core uses the "OEBasicHash" signature handler by default | ||
2954 | through this setting in the <code class="filename">bitbake.conf</code> | ||
2955 | file: | ||
2956 | </p><pre class="literallayout"> | ||
2957 | BB_SIGNATURE_HANDLER ?= "OEBasicHash" | ||
2958 | </pre><p> | ||
2959 | The "OEBasicHash" <code class="filename">BB_SIGNATURE_HANDLER</code> | ||
2960 | is the same as the "OEBasic" version but adds the task hash to | ||
2961 | the stamp files. | ||
2962 | This results in any | ||
2963 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#metadata" target="_top">Metadata</a> | ||
2964 | change that changes the task hash, automatically | ||
2965 | causing the task to be run again. | ||
2966 | This removes the need to bump | ||
2967 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PR" target="_top"><code class="filename">PR</code></a> | ||
2968 | values, and changes to Metadata automatically ripple across | ||
2969 | the build. | ||
2970 | </p><p> | ||
2971 | It is also worth noting that the end result of these | ||
2972 | signature generators is to make some dependency and hash | ||
2973 | information available to the build. | ||
2974 | This information includes: | ||
2975 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
2976 | <code class="filename">BB_BASEHASH_task-</code><em class="replaceable"><code>taskname</code></em>: | ||
2977 | The base hashes for each task in the recipe. | ||
2978 | </p></li><li class="listitem"><p> | ||
2979 | <code class="filename">BB_BASEHASH_</code><em class="replaceable"><code>filename</code></em><code class="filename">:</code><em class="replaceable"><code>taskname</code></em>: | ||
2980 | The base hashes for each dependent task. | ||
2981 | </p></li><li class="listitem"><p> | ||
2982 | <code class="filename">BBHASHDEPS_</code><em class="replaceable"><code>filename</code></em><code class="filename">:</code><em class="replaceable"><code>taskname</code></em>: | ||
2983 | The task dependencies for each task. | ||
2984 | </p></li><li class="listitem"><p> | ||
2985 | <code class="filename">BB_TASKHASH</code>: | ||
2986 | The hash of the currently running task. | ||
2987 | </p></li></ul></div><p> | ||
2988 | </p></div><div class="section" title="3.3.3. Shared State"><div class="titlepage"><div><div><h3 class="title" id="shared-state">3.3.3. Shared State<span class="permalink"><a alt="Permalink" title="Permalink" href="#shared-state">¶</a></span></h3></div></div></div><p> | ||
2989 | Checksums and dependencies, as discussed in the previous | ||
2990 | section, solve half the problem of supporting a shared state. | ||
2991 | The other part of the problem is being able to use checksum | ||
2992 | information during the build and being able to reuse or rebuild | ||
2993 | specific components. | ||
2994 | </p><p> | ||
2995 | The | ||
2996 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-sstate" target="_top"><code class="filename">sstate</code></a> | ||
2997 | class is a relatively generic implementation of how to | ||
2998 | "capture" a snapshot of a given task. | ||
2999 | The idea is that the build process does not care about the | ||
3000 | source of a task's output. | ||
3001 | Output could be freshly built or it could be downloaded and | ||
3002 | unpacked from somewhere - the build process does not need to | ||
3003 | worry about its origin. | ||
3004 | </p><p> | ||
3005 | There are two types of output, one is just about creating a | ||
3006 | directory in | ||
3007 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a>. | ||
3008 | A good example is the output of either | ||
3009 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-install" target="_top"><code class="filename">do_install</code></a> | ||
3010 | or | ||
3011 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a>. | ||
3012 | The other type of output occurs when a set of data is merged | ||
3013 | into a shared directory tree such as the sysroot. | ||
3014 | </p><p> | ||
3015 | The Yocto Project team has tried to keep the details of the | ||
3016 | implementation hidden in <code class="filename">sstate</code> class. | ||
3017 | From a user's perspective, adding shared state wrapping to a task | ||
3018 | is as simple as this | ||
3019 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-deploy" target="_top"><code class="filename">do_deploy</code></a> | ||
3020 | example taken from the | ||
3021 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-deploy" target="_top"><code class="filename">deploy</code></a> | ||
3022 | class: | ||
3023 | </p><pre class="literallayout"> | ||
3024 | DEPLOYDIR = "${WORKDIR}/deploy-${PN}" | ||
3025 | SSTATETASKS += "do_deploy" | ||
3026 | do_deploy[sstate-inputdirs] = "${DEPLOYDIR}" | ||
3027 | do_deploy[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}" | ||
3028 | |||
3029 | python do_deploy_setscene () { | ||
3030 | sstate_setscene(d) | ||
3031 | } | ||
3032 | addtask do_deploy_setscene | ||
3033 | do_deploy[dirs] = "${DEPLOYDIR} ${B}" | ||
3034 | </pre><p> | ||
3035 | The following list explains the previous example: | ||
3036 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
3037 | Adding "do_deploy" to <code class="filename">SSTATETASKS</code> | ||
3038 | adds some required sstate-related processing, which is | ||
3039 | implemented in the | ||
3040 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-classes-sstate" target="_top"><code class="filename">sstate</code></a> | ||
3041 | class, to before and after the | ||
3042 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-deploy" target="_top"><code class="filename">do_deploy</code></a> | ||
3043 | task. | ||
3044 | </p></li><li class="listitem"><p> | ||
3045 | The | ||
3046 | <code class="filename">do_deploy[sstate-inputdirs] = "${DEPLOYDIR}"</code> | ||
3047 | declares that <code class="filename">do_deploy</code> places its | ||
3048 | output in <code class="filename">${DEPLOYDIR}</code> when run | ||
3049 | normally (i.e. when not using the sstate cache). | ||
3050 | This output becomes the input to the shared state cache. | ||
3051 | </p></li><li class="listitem"><p> | ||
3052 | The | ||
3053 | <code class="filename">do_deploy[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"</code> | ||
3054 | line causes the contents of the shared state cache to be | ||
3055 | copied to <code class="filename">${DEPLOY_DIR_IMAGE}</code>. | ||
3056 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3057 | If <code class="filename">do_deploy</code> is not already in | ||
3058 | the shared state cache or if its input checksum | ||
3059 | (signature) has changed from when the output was | ||
3060 | cached, the task will be run to populate the shared | ||
3061 | state cache, after which the contents of the shared | ||
3062 | state cache is copied to | ||
3063 | <code class="filename">${DEPLOY_DIR_IMAGE}</code>. | ||
3064 | If <code class="filename">do_deploy</code> is in the shared | ||
3065 | state cache and its signature indicates that the | ||
3066 | cached output is still valid (i.e. if no | ||
3067 | relevant task inputs have changed), then the | ||
3068 | contents of the shared state cache will be copied | ||
3069 | directly to | ||
3070 | <code class="filename">${DEPLOY_DIR_IMAGE}</code> by the | ||
3071 | <code class="filename">do_deploy_setscene</code> task | ||
3072 | instead, skipping the | ||
3073 | <code class="filename">do_deploy</code> task. | ||
3074 | </div><p> | ||
3075 | </p></li><li class="listitem"><p> | ||
3076 | The following task definition is glue logic needed to | ||
3077 | make the previous settings effective: | ||
3078 | </p><pre class="literallayout"> | ||
3079 | python do_deploy_setscene () { | ||
3080 | sstate_setscene(d) | ||
3081 | } | ||
3082 | addtask do_deploy_setscene | ||
3083 | </pre><p> | ||
3084 | <code class="filename">sstate_setscene()</code> takes the flags | ||
3085 | above as input and accelerates the | ||
3086 | <code class="filename">do_deploy</code> task through the | ||
3087 | shared state cache if possible. | ||
3088 | If the task was accelerated, | ||
3089 | <code class="filename">sstate_setscene()</code> returns True. | ||
3090 | Otherwise, it returns False, and the normal | ||
3091 | <code class="filename">do_deploy</code> task runs. | ||
3092 | For more information, see the | ||
3093 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#setscene" target="_top">setscene</a>" | ||
3094 | section in the BitBake User Manual. | ||
3095 | </p></li><li class="listitem"><p> | ||
3096 | The <code class="filename">do_deploy[dirs] = "${DEPLOYDIR} ${B}"</code> | ||
3097 | line creates <code class="filename">${DEPLOYDIR}</code> and | ||
3098 | <code class="filename">${B}</code> before the | ||
3099 | <code class="filename">do_deploy</code> task runs, and also sets | ||
3100 | the current working directory of | ||
3101 | <code class="filename">do_deploy</code> to | ||
3102 | <code class="filename">${B}</code>. | ||
3103 | For more information, see the | ||
3104 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#variable-flags" target="_top">Variable Flags</a>" | ||
3105 | section in the BitBake User Manual. | ||
3106 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3107 | In cases where | ||
3108 | <code class="filename">sstate-inputdirs</code> and | ||
3109 | <code class="filename">sstate-outputdirs</code> would be the | ||
3110 | same, you can use | ||
3111 | <code class="filename">sstate-plaindirs</code>. | ||
3112 | For example, to preserve the | ||
3113 | <code class="filename">${PKGD}</code> and | ||
3114 | <code class="filename">${PKGDEST}</code> output from the | ||
3115 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a> | ||
3116 | task, use the following: | ||
3117 | <pre class="literallayout"> | ||
3118 | do_package[sstate-plaindirs] = "${PKGD} ${PKGDEST}" | ||
3119 | </pre></div><p> | ||
3120 | </p></li><li class="listitem"><p> | ||
3121 | <code class="filename">sstate-inputdirs</code> and | ||
3122 | <code class="filename">sstate-outputdirs</code> can also be used | ||
3123 | with multiple directories. | ||
3124 | For example, the following declares | ||
3125 | <code class="filename">PKGDESTWORK</code> and | ||
3126 | <code class="filename">SHLIBWORK</code> as shared state | ||
3127 | input directories, which populates the shared state | ||
3128 | cache, and <code class="filename">PKGDATA_DIR</code> and | ||
3129 | <code class="filename">SHLIBSDIR</code> as the corresponding | ||
3130 | shared state output directories: | ||
3131 | </p><pre class="literallayout"> | ||
3132 | do_package[sstate-inputdirs] = "${PKGDESTWORK} ${SHLIBSWORKDIR}" | ||
3133 | do_package[sstate-outputdirs] = "${PKGDATA_DIR} ${SHLIBSDIR}" | ||
3134 | </pre><p> | ||
3135 | </p></li><li class="listitem"><p> | ||
3136 | These methods also include the ability to take a | ||
3137 | lockfile when manipulating shared state directory | ||
3138 | structures, for cases where file additions or removals | ||
3139 | are sensitive: | ||
3140 | </p><pre class="literallayout"> | ||
3141 | do_package[sstate-lockfile] = "${PACKAGELOCK}" | ||
3142 | </pre><p> | ||
3143 | </p></li></ul></div><p> | ||
3144 | </p><p> | ||
3145 | Behind the scenes, the shared state code works by looking in | ||
3146 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SSTATE_DIR" target="_top"><code class="filename">SSTATE_DIR</code></a> | ||
3147 | and | ||
3148 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SSTATE_MIRRORS" target="_top"><code class="filename">SSTATE_MIRRORS</code></a> | ||
3149 | for shared state files. | ||
3150 | Here is an example: | ||
3151 | </p><pre class="literallayout"> | ||
3152 | SSTATE_MIRRORS ?= "\ | ||
3153 | file://.* http://someserver.tld/share/sstate/PATH;downloadfilename=PATH \n \ | ||
3154 | file://.* file:///some/local/dir/sstate/PATH" | ||
3155 | </pre><p> | ||
3156 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3157 | The shared state directory | ||
3158 | (<code class="filename">SSTATE_DIR</code>) is organized into | ||
3159 | two-character subdirectories, where the subdirectory | ||
3160 | names are based on the first two characters of the hash. | ||
3161 | If the shared state directory structure for a mirror has the | ||
3162 | same structure as <code class="filename">SSTATE_DIR</code>, you must | ||
3163 | specify "PATH" as part of the URI to enable the build system | ||
3164 | to map to the appropriate subdirectory. | ||
3165 | </div><p> | ||
3166 | </p><p> | ||
3167 | The shared state package validity can be detected just by | ||
3168 | looking at the filename since the filename contains the task | ||
3169 | checksum (or signature) as described earlier in this section. | ||
3170 | If a valid shared state package is found, the build process | ||
3171 | downloads it and uses it to accelerate the task. | ||
3172 | </p><p> | ||
3173 | The build processes use the <code class="filename">*_setscene</code> | ||
3174 | tasks for the task acceleration phase. | ||
3175 | BitBake goes through this phase before the main execution | ||
3176 | code and tries to accelerate any tasks for which it can find | ||
3177 | shared state packages. | ||
3178 | If a shared state package for a task is available, the | ||
3179 | shared state package is used. | ||
3180 | This means the task and any tasks on which it is dependent | ||
3181 | are not executed. | ||
3182 | </p><p> | ||
3183 | As a real world example, the aim is when building an IPK-based | ||
3184 | image, only the | ||
3185 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package_write_ipk" target="_top"><code class="filename">do_package_write_ipk</code></a> | ||
3186 | tasks would have their shared state packages fetched and | ||
3187 | extracted. | ||
3188 | Since the sysroot is not used, it would never get extracted. | ||
3189 | This is another reason why a task-based approach is preferred | ||
3190 | over a recipe-based approach, which would have to install the | ||
3191 | output from every task. | ||
3192 | </p></div><div class="section" title="3.3.4. Tips and Tricks"><div class="titlepage"><div><div><h3 class="title" id="tips-and-tricks">3.3.4. Tips and Tricks<span class="permalink"><a alt="Permalink" title="Permalink" href="#tips-and-tricks">¶</a></span></h3></div></div></div><p> | ||
3193 | The code in the build system that supports incremental builds | ||
3194 | is not simple code. | ||
3195 | This section presents some tips and tricks that help you work | ||
3196 | around issues related to shared state code. | ||
3197 | </p><div class="section" title="3.3.4.1. Debugging"><div class="titlepage"><div><div><h4 class="title" id="overview-debugging">3.3.4.1. Debugging<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-debugging">¶</a></span></h4></div></div></div><p> | ||
3198 | Seeing what metadata went into creating the input signature | ||
3199 | of a shared state (sstate) task can be a useful debugging | ||
3200 | aid. | ||
3201 | This information is available in signature information | ||
3202 | (<code class="filename">siginfo</code>) files in | ||
3203 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-SSTATE_DIR" target="_top"><code class="filename">SSTATE_DIR</code></a>. | ||
3204 | For information on how to view and interpret information in | ||
3205 | <code class="filename">siginfo</code> files, see the | ||
3206 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#dev-viewing-task-variable-dependencies" target="_top">Viewing Task Variable Dependencies</a>" | ||
3207 | section in the Yocto Project Development Tasks Manual. | ||
3208 | </p></div><div class="section" title="3.3.4.2. Invalidating Shared State"><div class="titlepage"><div><div><h4 class="title" id="invalidating-shared-state">3.3.4.2. Invalidating Shared State<span class="permalink"><a alt="Permalink" title="Permalink" href="#invalidating-shared-state">¶</a></span></h4></div></div></div><p> | ||
3209 | The OpenEmbedded build system uses checksums and shared | ||
3210 | state cache to avoid unnecessarily rebuilding tasks. | ||
3211 | Collectively, this scheme is known as "shared state code." | ||
3212 | </p><p> | ||
3213 | As with all schemes, this one has some drawbacks. | ||
3214 | It is possible that you could make implicit changes to your | ||
3215 | code that the checksum calculations do not take into | ||
3216 | account. | ||
3217 | These implicit changes affect a task's output but do not | ||
3218 | trigger the shared state code into rebuilding a recipe. | ||
3219 | Consider an example during which a tool changes its output. | ||
3220 | Assume that the output of <code class="filename">rpmdeps</code> | ||
3221 | changes. | ||
3222 | The result of the change should be that all the | ||
3223 | <code class="filename">package</code> and | ||
3224 | <code class="filename">package_write_rpm</code> shared state cache | ||
3225 | items become invalid. | ||
3226 | However, because the change to the output is | ||
3227 | external to the code and therefore implicit, | ||
3228 | the associated shared state cache items do not become | ||
3229 | invalidated. | ||
3230 | In this case, the build process uses the cached items | ||
3231 | rather than running the task again. | ||
3232 | Obviously, these types of implicit changes can cause | ||
3233 | problems. | ||
3234 | </p><p> | ||
3235 | To avoid these problems during the build, you need to | ||
3236 | understand the effects of any changes you make. | ||
3237 | Realize that changes you make directly to a function | ||
3238 | are automatically factored into the checksum calculation. | ||
3239 | Thus, these explicit changes invalidate the associated | ||
3240 | area of shared state cache. | ||
3241 | However, you need to be aware of any implicit changes that | ||
3242 | are not obvious changes to the code and could affect | ||
3243 | the output of a given task. | ||
3244 | </p><p> | ||
3245 | When you identify an implicit change, you can easily | ||
3246 | take steps to invalidate the cache and force the tasks | ||
3247 | to run. | ||
3248 | The steps you can take are as simple as changing a | ||
3249 | function's comments in the source code. | ||
3250 | For example, to invalidate package shared state files, | ||
3251 | change the comment statements of | ||
3252 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a> | ||
3253 | or the comments of one of the functions it calls. | ||
3254 | Even though the change is purely cosmetic, it causes the | ||
3255 | checksum to be recalculated and forces the OpenEmbedded | ||
3256 | build system to run the task again. | ||
3257 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3258 | For an example of a commit that makes a cosmetic | ||
3259 | change to invalidate shared state, see this | ||
3260 | <a class="ulink" href="http://git.yoctoproject.org/cgit.cgi/poky/commit/meta/classes/package.bbclass?id=737f8bbb4f27b4837047cb9b4fbfe01dfde36d54" target="_top">commit</a>. | ||
3261 | </div><p> | ||
3262 | </p></div></div></div><div class="section" title="3.4. Automatically Added Runtime Dependencies"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="automatically-added-runtime-dependencies">3.4. Automatically Added Runtime Dependencies<span class="permalink"><a alt="Permalink" title="Permalink" href="#automatically-added-runtime-dependencies">¶</a></span></h2></div></div></div><p> | ||
3263 | The OpenEmbedded build system automatically adds common types of | ||
3264 | runtime dependencies between packages, which means that you do not | ||
3265 | need to explicitly declare the packages using | ||
3266 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-RDEPENDS" target="_top"><code class="filename">RDEPENDS</code></a>. | ||
3267 | Three automatic mechanisms exist (<code class="filename">shlibdeps</code>, | ||
3268 | <code class="filename">pcdeps</code>, and <code class="filename">depchains</code>) | ||
3269 | that handle shared libraries, package configuration (pkg-config) | ||
3270 | modules, and <code class="filename">-dev</code> and | ||
3271 | <code class="filename">-dbg</code> packages, respectively. | ||
3272 | For other types of runtime dependencies, you must manually declare | ||
3273 | the dependencies. | ||
3274 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
3275 | <code class="filename">shlibdeps</code>: | ||
3276 | During the | ||
3277 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a> | ||
3278 | task of each recipe, all shared libraries installed by the | ||
3279 | recipe are located. | ||
3280 | For each shared library, the package that contains the | ||
3281 | shared library is registered as providing the shared | ||
3282 | library. | ||
3283 | More specifically, the package is registered as providing | ||
3284 | the | ||
3285 | <a class="ulink" href="https://en.wikipedia.org/wiki/Soname" target="_top">soname</a> | ||
3286 | of the library. | ||
3287 | The resulting shared-library-to-package mapping | ||
3288 | is saved globally in | ||
3289 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PKGDATA_DIR" target="_top"><code class="filename">PKGDATA_DIR</code></a> | ||
3290 | by the | ||
3291 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-packagedata" target="_top"><code class="filename">do_packagedata</code></a> | ||
3292 | task.</p><p>Simultaneously, all executables and shared libraries | ||
3293 | installed by the recipe are inspected to see what shared | ||
3294 | libraries they link against. | ||
3295 | For each shared library dependency that is found, | ||
3296 | <code class="filename">PKGDATA_DIR</code> is queried to | ||
3297 | see if some package (likely from a different recipe) | ||
3298 | contains the shared library. | ||
3299 | If such a package is found, a runtime dependency is added | ||
3300 | from the package that depends on the shared library to the | ||
3301 | package that contains the library.</p><p>The automatically added runtime dependency also | ||
3302 | includes a version restriction. | ||
3303 | This version restriction specifies that at least the | ||
3304 | current version of the package that provides the shared | ||
3305 | library must be used, as if | ||
3306 | "<em class="replaceable"><code>package</code></em> (>= <em class="replaceable"><code>version</code></em>)" | ||
3307 | had been added to | ||
3308 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-RDEPENDS" target="_top"><code class="filename">RDEPENDS</code></a>. | ||
3309 | This forces an upgrade of the package containing the shared | ||
3310 | library when installing the package that depends on the | ||
3311 | library, if needed.</p><p>If you want to avoid a package being registered as | ||
3312 | providing a particular shared library (e.g. because the library | ||
3313 | is for internal use only), then add the library to | ||
3314 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PRIVATE_LIBS" target="_top"><code class="filename">PRIVATE_LIBS</code></a> | ||
3315 | inside the package's recipe. | ||
3316 | </p></li><li class="listitem"><p> | ||
3317 | <code class="filename">pcdeps</code>: | ||
3318 | During the | ||
3319 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package" target="_top"><code class="filename">do_package</code></a> | ||
3320 | task of each recipe, all pkg-config modules | ||
3321 | (<code class="filename">*.pc</code> files) installed by the recipe | ||
3322 | are located. | ||
3323 | For each module, the package that contains the module is | ||
3324 | registered as providing the module. | ||
3325 | The resulting module-to-package mapping is saved globally in | ||
3326 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-PKGDATA_DIR" target="_top"><code class="filename">PKGDATA_DIR</code></a> | ||
3327 | by the | ||
3328 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-packagedata" target="_top"><code class="filename">do_packagedata</code></a> | ||
3329 | task.</p><p>Simultaneously, all pkg-config modules installed by | ||
3330 | the recipe are inspected to see what other pkg-config | ||
3331 | modules they depend on. | ||
3332 | A module is seen as depending on another module if it | ||
3333 | contains a "Requires:" line that specifies the other module. | ||
3334 | For each module dependency, | ||
3335 | <code class="filename">PKGDATA_DIR</code> is queried to see if some | ||
3336 | package contains the module. | ||
3337 | If such a package is found, a runtime dependency is added | ||
3338 | from the package that depends on the module to the package | ||
3339 | that contains the module. | ||
3340 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3341 | The <code class="filename">pcdeps</code> mechanism most often | ||
3342 | infers dependencies between <code class="filename">-dev</code> | ||
3343 | packages. | ||
3344 | </div><p> | ||
3345 | </p></li><li class="listitem"><p> | ||
3346 | <code class="filename">depchains</code>: | ||
3347 | If a package <code class="filename">foo</code> depends on a package | ||
3348 | <code class="filename">bar</code>, then <code class="filename">foo-dev</code> | ||
3349 | and <code class="filename">foo-dbg</code> are also made to depend on | ||
3350 | <code class="filename">bar-dev</code> and | ||
3351 | <code class="filename">bar-dbg</code>, respectively. | ||
3352 | Taking the <code class="filename">-dev</code> packages as an | ||
3353 | example, the <code class="filename">bar-dev</code> package might | ||
3354 | provide headers and shared library symlinks needed by | ||
3355 | <code class="filename">foo-dev</code>, which shows the need | ||
3356 | for a dependency between the packages.</p><p>The dependencies added by | ||
3357 | <code class="filename">depchains</code> are in the form of | ||
3358 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-RRECOMMENDS" target="_top"><code class="filename">RRECOMMENDS</code></a>. | ||
3359 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3360 | By default, <code class="filename">foo-dev</code> also has an | ||
3361 | <code class="filename">RDEPENDS</code>-style dependency on | ||
3362 | <code class="filename">foo</code>, because the default value of | ||
3363 | <code class="filename">RDEPENDS_${PN}-dev</code> (set in | ||
3364 | <code class="filename">bitbake.conf</code>) includes | ||
3365 | "${PN}". | ||
3366 | </div><p>To ensure that the dependency chain is never broken, | ||
3367 | <code class="filename">-dev</code> and <code class="filename">-dbg</code> | ||
3368 | packages are always generated by default, even if the | ||
3369 | packages turn out to be empty. | ||
3370 | See the | ||
3371 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-ALLOW_EMPTY" target="_top"><code class="filename">ALLOW_EMPTY</code></a> | ||
3372 | variable for more information. | ||
3373 | </p></li></ul></div><p> | ||
3374 | </p><p> | ||
3375 | The <code class="filename">do_package</code> task depends on the | ||
3376 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-packagedata" target="_top"><code class="filename">do_packagedata</code></a> | ||
3377 | task of each recipe in | ||
3378 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DEPENDS" target="_top"><code class="filename">DEPENDS</code></a> | ||
3379 | through use of a | ||
3380 | <code class="filename">[</code><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#variable-flags" target="_top"><code class="filename">deptask</code></a><code class="filename">]</code> | ||
3381 | declaration, which guarantees that the required | ||
3382 | shared-library/module-to-package mapping information will be available | ||
3383 | when needed as long as <code class="filename">DEPENDS</code> has been | ||
3384 | correctly set. | ||
3385 | </p></div><div class="section" title="3.5. Fakeroot and Pseudo"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="fakeroot-and-pseudo">3.5. Fakeroot and Pseudo<span class="permalink"><a alt="Permalink" title="Permalink" href="#fakeroot-and-pseudo">¶</a></span></h2></div></div></div><p> | ||
3386 | Some tasks are easier to implement when allowed to perform certain | ||
3387 | operations that are normally reserved for the root user (e.g. | ||
3388 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-install" target="_top"><code class="filename">do_install</code></a>, | ||
3389 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-package_write_deb" target="_top"><code class="filename">do_package_write*</code></a>, | ||
3390 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-rootfs" target="_top"><code class="filename">do_rootfs</code></a>, | ||
3391 | and | ||
3392 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#ref-tasks-image" target="_top"><code class="filename">do_image*</code></a>). | ||
3393 | For example, the <code class="filename">do_install</code> task benefits | ||
3394 | from being able to set the UID and GID of installed files to | ||
3395 | arbitrary values. | ||
3396 | </p><p> | ||
3397 | One approach to allowing tasks to perform root-only operations | ||
3398 | would be to require BitBake to run as root. | ||
3399 | However, this method is cumbersome and has security issues. | ||
3400 | The approach that is actually used is to run tasks that benefit | ||
3401 | from root privileges in a "fake" root environment. | ||
3402 | Within this environment, the task and its child processes believe | ||
3403 | that they are running as the root user, and see an internally | ||
3404 | consistent view of the filesystem. | ||
3405 | As long as generating the final output (e.g. a package or an image) | ||
3406 | does not require root privileges, the fact that some earlier | ||
3407 | steps ran in a fake root environment does not cause problems. | ||
3408 | </p><p> | ||
3409 | The capability to run tasks in a fake root environment is known as | ||
3410 | "<a class="ulink" href="http://man.he.net/man1/fakeroot" target="_top">fakeroot</a>", | ||
3411 | which is derived from the BitBake keyword/variable | ||
3412 | flag that requests a fake root environment for a task. | ||
3413 | </p><p> | ||
3414 | In the OpenEmbedded build system, the program that implements | ||
3415 | fakeroot is known as Pseudo. | ||
3416 | Pseudo overrides system calls by using the environment variable | ||
3417 | <code class="filename">LD_PRELOAD</code>, which results in the illusion | ||
3418 | of running as root. | ||
3419 | To keep track of "fake" file ownership and permissions resulting | ||
3420 | from operations that require root permissions, Pseudo uses | ||
3421 | an SQLite 3 database. | ||
3422 | This database is stored in | ||
3423 | <code class="filename">${</code><a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a><code class="filename">}/pseudo/files.db</code> | ||
3424 | for individual recipes. | ||
3425 | Storing the database in a file as opposed to in memory | ||
3426 | gives persistence between tasks and builds, which is not | ||
3427 | accomplished using fakeroot. | ||
3428 | </p><div class="note" title="Caution" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Caution</h3> | ||
3429 | If you add your own task that manipulates the same files or | ||
3430 | directories as a fakeroot task, then that task also needs to | ||
3431 | run under fakeroot. | ||
3432 | Otherwise, the task cannot run root-only operations, and | ||
3433 | cannot see the fake file ownership and permissions set by the | ||
3434 | other task. | ||
3435 | You need to also add a dependency on | ||
3436 | <code class="filename">virtual/fakeroot-native:do_populate_sysroot</code>, | ||
3437 | giving the following: | ||
3438 | <pre class="literallayout"> | ||
3439 | fakeroot do_mytask () { | ||
3440 | ... | ||
3441 | } | ||
3442 | do_mytask[depends] += "virtual/fakeroot-native:do_populate_sysroot" | ||
3443 | </pre></div><p> | ||
3444 | For more information, see the | ||
3445 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#var-FAKEROOT" target="_top"><code class="filename">FAKEROOT*</code></a> | ||
3446 | variables in the BitBake User Manual. | ||
3447 | You can also reference the | ||
3448 | "<a class="ulink" href="http://www.ibm.com/developerworks/opensource/library/os-aapseudo1/index.html" target="_top">Pseudo</a>" | ||
3449 | and | ||
3450 | "<a class="ulink" href="https://github.com/wrpseudo/pseudo/wiki/WhyNotFakeroot" target="_top">Why Not Fakeroot?</a>" | ||
3451 | articles for background information on Pseudo. | ||
3452 | </p></div><div class="section" title="3.6. Wayland"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="wayland">3.6. Wayland<span class="permalink"><a alt="Permalink" title="Permalink" href="#wayland">¶</a></span></h2></div></div></div><p> | ||
3453 | <a class="ulink" href="http://en.wikipedia.org/wiki/Wayland_(display_server_protocol)" target="_top">Wayland</a> | ||
3454 | is a computer display server protocol that | ||
3455 | provides a method for compositing window managers to communicate | ||
3456 | directly with applications and video hardware and expects them to | ||
3457 | communicate with input hardware using other libraries. | ||
3458 | Using Wayland with supporting targets can result in better control | ||
3459 | over graphics frame rendering than an application might otherwise | ||
3460 | achieve. | ||
3461 | </p><p> | ||
3462 | The Yocto Project provides the Wayland protocol libraries and the | ||
3463 | reference | ||
3464 | <a class="ulink" href="http://en.wikipedia.org/wiki/Wayland_(display_server_protocol)#Weston" target="_top">Weston</a> | ||
3465 | compositor as part of its release. | ||
3466 | This section describes what you need to do to implement Wayland and | ||
3467 | use the compositor when building an image for a supporting target. | ||
3468 | </p><div class="section" title="3.6.1. Support"><div class="titlepage"><div><div><h3 class="title" id="wayland-support">3.6.1. Support<span class="permalink"><a alt="Permalink" title="Permalink" href="#wayland-support">¶</a></span></h3></div></div></div><p> | ||
3469 | The Wayland protocol libraries and the reference Weston | ||
3470 | compositor ship as integrated packages in the | ||
3471 | <code class="filename">meta</code> layer of the | ||
3472 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#source-directory" target="_top">Source Directory</a>. | ||
3473 | Specifically, you can find the recipes that build both Wayland | ||
3474 | and Weston at | ||
3475 | <code class="filename">meta/recipes-graphics/wayland</code>. | ||
3476 | </p><p> | ||
3477 | You can build both the Wayland and Weston packages for use only | ||
3478 | with targets that accept the | ||
3479 | <a class="ulink" href="https://en.wikipedia.org/wiki/Mesa_(computer_graphics)" target="_top">Mesa 3D and Direct Rendering Infrastructure</a>, | ||
3480 | which is also known as Mesa DRI. | ||
3481 | This implies that you cannot build and use the packages if your | ||
3482 | target uses, for example, the | ||
3483 | <span class="trademark">Intel</span>® Embedded Media | ||
3484 | and Graphics Driver | ||
3485 | (<span class="trademark">Intel</span>® EMGD) that | ||
3486 | overrides Mesa DRI. | ||
3487 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3488 | Due to lack of EGL support, Weston 1.0.3 will not run | ||
3489 | directly on the emulated QEMU hardware. | ||
3490 | However, this version of Weston will run under X emulation | ||
3491 | without issues. | ||
3492 | </div><p> | ||
3493 | </p></div><div class="section" title="3.6.2. Enabling Wayland in an Image"><div class="titlepage"><div><div><h3 class="title" id="enabling-wayland-in-an-image">3.6.2. Enabling Wayland in an Image<span class="permalink"><a alt="Permalink" title="Permalink" href="#enabling-wayland-in-an-image">¶</a></span></h3></div></div></div><p> | ||
3494 | To enable Wayland, you need to enable it to be built and enable | ||
3495 | it to be included in the image. | ||
3496 | </p><div class="section" title="3.6.2.1. Building"><div class="titlepage"><div><div><h4 class="title" id="enable-building">3.6.2.1. Building<span class="permalink"><a alt="Permalink" title="Permalink" href="#enable-building">¶</a></span></h4></div></div></div><p> | ||
3497 | To cause Mesa to build the <code class="filename">wayland-egl</code> | ||
3498 | platform and Weston to build Wayland with Kernel Mode | ||
3499 | Setting | ||
3500 | (<a class="ulink" href="https://wiki.archlinux.org/index.php/Kernel_Mode_Setting" target="_top">KMS</a>) | ||
3501 | support, include the "wayland" flag in the | ||
3502 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-DISTRO_FEATURES" target="_top"><code class="filename">DISTRO_FEATURES</code></a> | ||
3503 | statement in your <code class="filename">local.conf</code> file: | ||
3504 | </p><pre class="literallayout"> | ||
3505 | DISTRO_FEATURES_append = " wayland" | ||
3506 | </pre><p> | ||
3507 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3508 | If X11 has been enabled elsewhere, Weston will build | ||
3509 | Wayland with X11 support | ||
3510 | </div><p> | ||
3511 | </p></div><div class="section" title="3.6.2.2. Installing"><div class="titlepage"><div><div><h4 class="title" id="enable-installation-in-an-image">3.6.2.2. Installing<span class="permalink"><a alt="Permalink" title="Permalink" href="#enable-installation-in-an-image">¶</a></span></h4></div></div></div><p> | ||
3512 | To install the Wayland feature into an image, you must | ||
3513 | include the following | ||
3514 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-CORE_IMAGE_EXTRA_INSTALL" target="_top"><code class="filename">CORE_IMAGE_EXTRA_INSTALL</code></a> | ||
3515 | statement in your <code class="filename">local.conf</code> file: | ||
3516 | </p><pre class="literallayout"> | ||
3517 | CORE_IMAGE_EXTRA_INSTALL += "wayland weston" | ||
3518 | </pre><p> | ||
3519 | </p></div></div><div class="section" title="3.6.3. Running Weston"><div class="titlepage"><div><div><h3 class="title" id="running-weston">3.6.3. Running Weston<span class="permalink"><a alt="Permalink" title="Permalink" href="#running-weston">¶</a></span></h3></div></div></div><p> | ||
3520 | To run Weston inside X11, enabling it as described earlier and | ||
3521 | building a Sato image is sufficient. | ||
3522 | If you are running your image under Sato, a Weston Launcher | ||
3523 | appears in the "Utility" category. | ||
3524 | </p><p> | ||
3525 | Alternatively, you can run Weston through the command-line | ||
3526 | interpretor (CLI), which is better suited for development work. | ||
3527 | To run Weston under the CLI, you need to do the following after | ||
3528 | your image is built: | ||
3529 | </p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p> | ||
3530 | Run these commands to export | ||
3531 | <code class="filename">XDG_RUNTIME_DIR</code>: | ||
3532 | </p><pre class="literallayout"> | ||
3533 | mkdir -p /tmp/$USER-weston | ||
3534 | chmod 0700 /tmp/$USER-weston | ||
3535 | export XDG_RUNTIME_DIR=/tmp/$USER-weston | ||
3536 | </pre><p> | ||
3537 | </p></li><li class="listitem"><p> | ||
3538 | Launch Weston in the shell: | ||
3539 | </p><pre class="literallayout"> | ||
3540 | weston | ||
3541 | </pre></li></ol></div><p> | ||
3542 | </p></div></div><div class="section" title="3.7. Licenses"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="overview-licenses">3.7. Licenses<span class="permalink"><a alt="Permalink" title="Permalink" href="#overview-licenses">¶</a></span></h2></div></div></div><p> | ||
3543 | This section describes the mechanism by which the OpenEmbedded | ||
3544 | build system tracks changes to licensing text. | ||
3545 | The section also describes how to enable commercially licensed | ||
3546 | recipes, which by default are disabled. | ||
3547 | </p><p> | ||
3548 | For information that can help you maintain compliance with | ||
3549 | various open source licensing during the lifecycle of the product, | ||
3550 | see the | ||
3551 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#maintaining-open-source-license-compliance-during-your-products-lifecycle" target="_top">Maintaining Open Source License Compliance During Your Project's Lifecycle</a>" | ||
3552 | section in the Yocto Project Development Tasks Manual. | ||
3553 | </p><div class="section" title="3.7.1. Tracking License Changes"><div class="titlepage"><div><div><h3 class="title" id="usingpoky-configuring-LIC_FILES_CHKSUM">3.7.1. Tracking License Changes<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-configuring-LIC_FILES_CHKSUM">¶</a></span></h3></div></div></div><p> | ||
3554 | The license of an upstream project might change in the future. | ||
3555 | In order to prevent these changes going unnoticed, the | ||
3556 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-LIC_FILES_CHKSUM" target="_top"><code class="filename">LIC_FILES_CHKSUM</code></a> | ||
3557 | variable tracks changes to the license text. The checksums are | ||
3558 | validated at the end of the configure step, and if the | ||
3559 | checksums do not match, the build will fail. | ||
3560 | </p><div class="section" title="3.7.1.1. Specifying the LIC_FILES_CHKSUM Variable"><div class="titlepage"><div><div><h4 class="title" id="usingpoky-specifying-LIC_FILES_CHKSUM">3.7.1.1. Specifying the <code class="filename">LIC_FILES_CHKSUM</code> Variable<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-specifying-LIC_FILES_CHKSUM">¶</a></span></h4></div></div></div><p> | ||
3561 | The <code class="filename">LIC_FILES_CHKSUM</code> | ||
3562 | variable contains checksums of the license text in the | ||
3563 | source code for the recipe. | ||
3564 | Following is an example of how to specify | ||
3565 | <code class="filename">LIC_FILES_CHKSUM</code>: | ||
3566 | </p><pre class="literallayout"> | ||
3567 | LIC_FILES_CHKSUM = "file://COPYING;md5=xxxx \ | ||
3568 | file://licfile1.txt;beginline=5;endline=29;md5=yyyy \ | ||
3569 | file://licfile2.txt;endline=50;md5=zzzz \ | ||
3570 | ..." | ||
3571 | </pre><p> | ||
3572 | </p><div class="note" title="Notes" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Notes</h3><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
3573 | When using "beginline" and "endline", realize | ||
3574 | that line numbering begins with one and not | ||
3575 | zero. | ||
3576 | Also, the included lines are inclusive (i.e. | ||
3577 | lines five through and including 29 in the | ||
3578 | previous example for | ||
3579 | <code class="filename">licfile1.txt</code>). | ||
3580 | </p></li><li class="listitem"><p> | ||
3581 | When a license check fails, the selected license | ||
3582 | text is included as part of the QA message. | ||
3583 | Using this output, you can determine the exact | ||
3584 | start and finish for the needed license text. | ||
3585 | </p></li></ul></div></div><p> | ||
3586 | </p><p> | ||
3587 | The build system uses the | ||
3588 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-S" target="_top"><code class="filename">S</code></a> | ||
3589 | variable as the default directory when searching files | ||
3590 | listed in <code class="filename">LIC_FILES_CHKSUM</code>. | ||
3591 | The previous example employs the default directory. | ||
3592 | </p><p> | ||
3593 | Consider this next example: | ||
3594 | </p><pre class="literallayout"> | ||
3595 | LIC_FILES_CHKSUM = "file://src/ls.c;beginline=5;endline=16;\ | ||
3596 | md5=bb14ed3c4cda583abc85401304b5cd4e" | ||
3597 | LIC_FILES_CHKSUM = "file://${WORKDIR}/license.html;md5=5c94767cedb5d6987c902ac850ded2c6" | ||
3598 | </pre><p> | ||
3599 | </p><p> | ||
3600 | The first line locates a file in | ||
3601 | <code class="filename">${S}/src/ls.c</code> and isolates lines five | ||
3602 | through 16 as license text. | ||
3603 | The second line refers to a file in | ||
3604 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-WORKDIR" target="_top"><code class="filename">WORKDIR</code></a>. | ||
3605 | </p><p> | ||
3606 | Note that <code class="filename">LIC_FILES_CHKSUM</code> variable is | ||
3607 | mandatory for all recipes, unless the | ||
3608 | <code class="filename">LICENSE</code> variable is set to "CLOSED". | ||
3609 | </p></div><div class="section" title="3.7.1.2. Explanation of Syntax"><div class="titlepage"><div><div><h4 class="title" id="usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax">3.7.1.2. Explanation of Syntax<span class="permalink"><a alt="Permalink" title="Permalink" href="#usingpoky-LIC_FILES_CHKSUM-explanation-of-syntax">¶</a></span></h4></div></div></div><p> | ||
3610 | As mentioned in the previous section, the | ||
3611 | <code class="filename">LIC_FILES_CHKSUM</code> variable lists all | ||
3612 | the important files that contain the license text for the | ||
3613 | source code. | ||
3614 | It is possible to specify a checksum for an entire file, | ||
3615 | or a specific section of a file (specified by beginning and | ||
3616 | ending line numbers with the "beginline" and "endline" | ||
3617 | parameters, respectively). | ||
3618 | The latter is useful for source files with a license | ||
3619 | notice header, README documents, and so forth. | ||
3620 | If you do not use the "beginline" parameter, then it is | ||
3621 | assumed that the text begins on the first line of the file. | ||
3622 | Similarly, if you do not use the "endline" parameter, | ||
3623 | it is assumed that the license text ends with the last | ||
3624 | line of the file. | ||
3625 | </p><p> | ||
3626 | The "md5" parameter stores the md5 checksum of the license | ||
3627 | text. | ||
3628 | If the license text changes in any way as compared to | ||
3629 | this parameter then a mismatch occurs. | ||
3630 | This mismatch triggers a build failure and notifies | ||
3631 | the developer. | ||
3632 | Notification allows the developer to review and address | ||
3633 | the license text changes. | ||
3634 | Also note that if a mismatch occurs during the build, | ||
3635 | the correct md5 checksum is placed in the build log and | ||
3636 | can be easily copied to the recipe. | ||
3637 | </p><p> | ||
3638 | There is no limit to how many files you can specify using | ||
3639 | the <code class="filename">LIC_FILES_CHKSUM</code> variable. | ||
3640 | Generally, however, every project requires a few | ||
3641 | specifications for license tracking. | ||
3642 | Many projects have a "COPYING" file that stores the | ||
3643 | license information for all the source code files. | ||
3644 | This practice allows you to just track the "COPYING" | ||
3645 | file as long as it is kept up to date. | ||
3646 | </p><div class="note" title="Tips" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Tips</h3><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
3647 | If you specify an empty or invalid "md5" | ||
3648 | parameter, BitBake returns an md5 mis-match | ||
3649 | error and displays the correct "md5" parameter | ||
3650 | value during the build. | ||
3651 | The correct parameter is also captured in | ||
3652 | the build log. | ||
3653 | </p></li><li class="listitem"><p> | ||
3654 | If the whole file contains only license text, | ||
3655 | you do not need to use the "beginline" and | ||
3656 | "endline" parameters. | ||
3657 | </p></li></ul></div></div><p> | ||
3658 | </p></div></div><div class="section" title="3.7.2. Enabling Commercially Licensed Recipes"><div class="titlepage"><div><div><h3 class="title" id="enabling-commercially-licensed-recipes">3.7.2. Enabling Commercially Licensed Recipes<span class="permalink"><a alt="Permalink" title="Permalink" href="#enabling-commercially-licensed-recipes">¶</a></span></h3></div></div></div><p> | ||
3659 | By default, the OpenEmbedded build system disables | ||
3660 | components that have commercial or other special licensing | ||
3661 | requirements. | ||
3662 | Such requirements are defined on a | ||
3663 | recipe-by-recipe basis through the | ||
3664 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-LICENSE_FLAGS" target="_top"><code class="filename">LICENSE_FLAGS</code></a> | ||
3665 | variable definition in the affected recipe. | ||
3666 | For instance, the | ||
3667 | <code class="filename">poky/meta/recipes-multimedia/gstreamer/gst-plugins-ugly</code> | ||
3668 | recipe contains the following statement: | ||
3669 | </p><pre class="literallayout"> | ||
3670 | LICENSE_FLAGS = "commercial" | ||
3671 | </pre><p> | ||
3672 | Here is a slightly more complicated example that contains both | ||
3673 | an explicit recipe name and version (after variable expansion): | ||
3674 | </p><pre class="literallayout"> | ||
3675 | LICENSE_FLAGS = "license_${PN}_${PV}" | ||
3676 | </pre><p> | ||
3677 | In order for a component restricted by a | ||
3678 | <code class="filename">LICENSE_FLAGS</code> definition to be enabled and | ||
3679 | included in an image, it needs to have a matching entry in the | ||
3680 | global | ||
3681 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-LICENSE_FLAGS_WHITELIST" target="_top"><code class="filename">LICENSE_FLAGS_WHITELIST</code></a> | ||
3682 | variable, which is a variable typically defined in your | ||
3683 | <code class="filename">local.conf</code> file. | ||
3684 | For example, to enable the | ||
3685 | <code class="filename">poky/meta/recipes-multimedia/gstreamer/gst-plugins-ugly</code> | ||
3686 | package, you could add either the string | ||
3687 | "commercial_gst-plugins-ugly" or the more general string | ||
3688 | "commercial" to <code class="filename">LICENSE_FLAGS_WHITELIST</code>. | ||
3689 | See the | ||
3690 | "<a class="link" href="#license-flag-matching" title="3.7.2.1. License Flag Matching">License Flag Matching</a>" | ||
3691 | section for a full | ||
3692 | explanation of how <code class="filename">LICENSE_FLAGS</code> matching | ||
3693 | works. | ||
3694 | Here is the example: | ||
3695 | </p><pre class="literallayout"> | ||
3696 | LICENSE_FLAGS_WHITELIST = "commercial_gst-plugins-ugly" | ||
3697 | </pre><p> | ||
3698 | Likewise, to additionally enable the package built from the | ||
3699 | recipe containing | ||
3700 | <code class="filename">LICENSE_FLAGS = "license_${PN}_${PV}"</code>, | ||
3701 | and assuming that the actual recipe name was | ||
3702 | <code class="filename">emgd_1.10.bb</code>, the following string would | ||
3703 | enable that package as well as the original | ||
3704 | <code class="filename">gst-plugins-ugly</code> package: | ||
3705 | </p><pre class="literallayout"> | ||
3706 | LICENSE_FLAGS_WHITELIST = "commercial_gst-plugins-ugly license_emgd_1.10" | ||
3707 | </pre><p> | ||
3708 | As a convenience, you do not need to specify the complete | ||
3709 | license string in the whitelist for every package. | ||
3710 | You can use an abbreviated form, which consists | ||
3711 | of just the first portion or portions of the license | ||
3712 | string before the initial underscore character or characters. | ||
3713 | A partial string will match any license that contains the | ||
3714 | given string as the first portion of its license. | ||
3715 | For example, the following whitelist string will also match | ||
3716 | both of the packages previously mentioned as well as any other | ||
3717 | packages that have licenses starting with "commercial" or | ||
3718 | "license". | ||
3719 | </p><pre class="literallayout"> | ||
3720 | LICENSE_FLAGS_WHITELIST = "commercial license" | ||
3721 | </pre><p> | ||
3722 | </p><div class="section" title="3.7.2.1. License Flag Matching"><div class="titlepage"><div><div><h4 class="title" id="license-flag-matching">3.7.2.1. License Flag Matching<span class="permalink"><a alt="Permalink" title="Permalink" href="#license-flag-matching">¶</a></span></h4></div></div></div><p> | ||
3723 | License flag matching allows you to control what recipes | ||
3724 | the OpenEmbedded build system includes in the build. | ||
3725 | Fundamentally, the build system attempts to match | ||
3726 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-LICENSE_FLAGS" target="_top"><code class="filename">LICENSE_FLAGS</code></a> | ||
3727 | strings found in recipes against | ||
3728 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-LICENSE_FLAGS_WHITELIST" target="_top"><code class="filename">LICENSE_FLAGS_WHITELIST</code></a> | ||
3729 | strings found in the whitelist. | ||
3730 | A match causes the build system to include a recipe in the | ||
3731 | build, while failure to find a match causes the build | ||
3732 | system to exclude a recipe. | ||
3733 | </p><p> | ||
3734 | In general, license flag matching is simple. | ||
3735 | However, understanding some concepts will help you | ||
3736 | correctly and effectively use matching. | ||
3737 | </p><p> | ||
3738 | Before a flag | ||
3739 | defined by a particular recipe is tested against the | ||
3740 | contents of the whitelist, the expanded string | ||
3741 | <code class="filename">_${PN}</code> is appended to the flag. | ||
3742 | This expansion makes each | ||
3743 | <code class="filename">LICENSE_FLAGS</code> value recipe-specific. | ||
3744 | After expansion, the string is then matched against the | ||
3745 | whitelist. | ||
3746 | Thus, specifying | ||
3747 | <code class="filename">LICENSE_FLAGS = "commercial"</code> | ||
3748 | in recipe "foo", for example, results in the string | ||
3749 | <code class="filename">"commercial_foo"</code>. | ||
3750 | And, to create a match, that string must appear in the | ||
3751 | whitelist. | ||
3752 | </p><p> | ||
3753 | Judicious use of the <code class="filename">LICENSE_FLAGS</code> | ||
3754 | strings and the contents of the | ||
3755 | <code class="filename">LICENSE_FLAGS_WHITELIST</code> variable | ||
3756 | allows you a lot of flexibility for including or excluding | ||
3757 | recipes based on licensing. | ||
3758 | For example, you can broaden the matching capabilities by | ||
3759 | using license flags string subsets in the whitelist. | ||
3760 | </p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3> | ||
3761 | When using a string subset, be sure to use the part of | ||
3762 | the expanded string that precedes the appended | ||
3763 | underscore character (e.g. | ||
3764 | <code class="filename">usethispart_1.3</code>, | ||
3765 | <code class="filename">usethispart_1.4</code>, and so forth). | ||
3766 | </div><p> | ||
3767 | For example, simply specifying the string "commercial" in | ||
3768 | the whitelist matches any expanded | ||
3769 | <code class="filename">LICENSE_FLAGS</code> definition that starts | ||
3770 | with the string "commercial" such as "commercial_foo" and | ||
3771 | "commercial_bar", which are the strings the build system | ||
3772 | automatically generates for hypothetical recipes named | ||
3773 | "foo" and "bar" assuming those recipes simply specify the | ||
3774 | following: | ||
3775 | </p><pre class="literallayout"> | ||
3776 | LICENSE_FLAGS = "commercial" | ||
3777 | </pre><p> | ||
3778 | Thus, you can choose to exhaustively | ||
3779 | enumerate each license flag in the whitelist and | ||
3780 | allow only specific recipes into the image, or | ||
3781 | you can use a string subset that causes a broader range of | ||
3782 | matches to allow a range of recipes into the image. | ||
3783 | </p><p> | ||
3784 | This scheme works even if the | ||
3785 | <code class="filename">LICENSE_FLAGS</code> string already | ||
3786 | has <code class="filename">_${PN}</code> appended. | ||
3787 | For example, the build system turns the license flag | ||
3788 | "commercial_1.2_foo" into "commercial_1.2_foo_foo" and | ||
3789 | would match both the general "commercial" and the specific | ||
3790 | "commercial_1.2_foo" strings found in the whitelist, as | ||
3791 | expected. | ||
3792 | </p><p> | ||
3793 | Here are some other scenarios: | ||
3794 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
3795 | You can specify a versioned string in the recipe | ||
3796 | such as "commercial_foo_1.2" in a "foo" recipe. | ||
3797 | The build system expands this string to | ||
3798 | "commercial_foo_1.2_foo". | ||
3799 | Combine this license flag with a whitelist that has | ||
3800 | the string "commercial" and you match the flag | ||
3801 | along with any other flag that starts with the | ||
3802 | string "commercial". | ||
3803 | </p></li><li class="listitem"><p> | ||
3804 | Under the same circumstances, you can use | ||
3805 | "commercial_foo" in the whitelist and the build | ||
3806 | system not only matches "commercial_foo_1.2" but | ||
3807 | also matches any license flag with the string | ||
3808 | "commercial_foo", regardless of the version. | ||
3809 | </p></li><li class="listitem"><p> | ||
3810 | You can be very specific and use both the | ||
3811 | package and version parts in the whitelist (e.g. | ||
3812 | "commercial_foo_1.2") to specifically match a | ||
3813 | versioned recipe. | ||
3814 | </p></li></ul></div><p> | ||
3815 | </p></div><div class="section" title="3.7.2.2. Other Variables Related to Commercial Licenses"><div class="titlepage"><div><div><h4 class="title" id="other-variables-related-to-commercial-licenses">3.7.2.2. Other Variables Related to Commercial Licenses<span class="permalink"><a alt="Permalink" title="Permalink" href="#other-variables-related-to-commercial-licenses">¶</a></span></h4></div></div></div><p> | ||
3816 | Other helpful variables related to commercial | ||
3817 | license handling exist and are defined in the | ||
3818 | <code class="filename">poky/meta/conf/distro/include/default-distrovars.inc</code> file: | ||
3819 | </p><pre class="literallayout"> | ||
3820 | COMMERCIAL_AUDIO_PLUGINS ?= "" | ||
3821 | COMMERCIAL_VIDEO_PLUGINS ?= "" | ||
3822 | </pre><p> | ||
3823 | If you want to enable these components, you can do so by | ||
3824 | making sure you have statements similar to the following | ||
3825 | in your <code class="filename">local.conf</code> configuration file: | ||
3826 | </p><pre class="literallayout"> | ||
3827 | COMMERCIAL_AUDIO_PLUGINS = "gst-plugins-ugly-mad \ | ||
3828 | gst-plugins-ugly-mpegaudioparse" | ||
3829 | COMMERCIAL_VIDEO_PLUGINS = "gst-plugins-ugly-mpeg2dec \ | ||
3830 | gst-plugins-ugly-mpegstream gst-plugins-bad-mpegvideoparse" | ||
3831 | LICENSE_FLAGS_WHITELIST = "commercial_gst-plugins-ugly commercial_gst-plugins-bad commercial_qmmp" | ||
3832 | </pre><p> | ||
3833 | Of course, you could also create a matching whitelist | ||
3834 | for those components using the more general "commercial" | ||
3835 | in the whitelist, but that would also enable all the | ||
3836 | other packages with | ||
3837 | <a class="ulink" href="http://www.yoctoproject.org/docs/2.5/ref-manual/ref-manual.html#var-LICENSE_FLAGS" target="_top"><code class="filename">LICENSE_FLAGS</code></a> | ||
3838 | containing "commercial", which you may or may not want: | ||
3839 | </p><pre class="literallayout"> | ||
3840 | LICENSE_FLAGS_WHITELIST = "commercial" | ||
3841 | </pre><p> | ||
3842 | </p><p> | ||
3843 | Specifying audio and video plug-ins as part of the | ||
3844 | <code class="filename">COMMERCIAL_AUDIO_PLUGINS</code> and | ||
3845 | <code class="filename">COMMERCIAL_VIDEO_PLUGINS</code> statements | ||
3846 | (along with the enabling | ||
3847 | <code class="filename">LICENSE_FLAGS_WHITELIST</code>) includes the | ||
3848 | plug-ins or components into built images, thus adding | ||
3849 | support for media formats or components. | ||
3850 | </p></div></div></div><div class="section" title="3.8. x32 psABI"><div class="titlepage"><div><div><h2 class="title" style="clear: both" id="x32">3.8. x32 psABI<span class="permalink"><a alt="Permalink" title="Permalink" href="#x32">¶</a></span></h2></div></div></div><p> | ||
3851 | x32 processor-specific Application Binary Interface | ||
3852 | (<a class="ulink" href="https://software.intel.com/en-us/node/628948" target="_top">x32 psABI</a>) | ||
3853 | is a native 32-bit processor-specific ABI for | ||
3854 | <span class="trademark">Intel</span>® 64 (x86-64) | ||
3855 | architectures. | ||
3856 | An ABI defines the calling conventions between functions in a | ||
3857 | processing environment. | ||
3858 | The interface determines what registers are used and what the sizes are | ||
3859 | for various C data types. | ||
3860 | </p><p> | ||
3861 | Some processing environments prefer using 32-bit applications even | ||
3862 | when running on Intel 64-bit platforms. | ||
3863 | Consider the i386 psABI, which is a very old 32-bit ABI for Intel | ||
3864 | 64-bit platforms. | ||
3865 | The i386 psABI does not provide efficient use and access of the | ||
3866 | Intel 64-bit processor resources, leaving the system underutilized. | ||
3867 | Now consider the x86_64 psABI. | ||
3868 | This ABI is newer and uses 64-bits for data sizes and program | ||
3869 | pointers. | ||
3870 | The extra bits increase the footprint size of the programs, | ||
3871 | libraries, and also increases the memory and file system size | ||
3872 | requirements. | ||
3873 | Executing under the x32 psABI enables user programs to utilize CPU | ||
3874 | and system resources more efficiently while keeping the memory | ||
3875 | footprint of the applications low. | ||
3876 | Extra bits are used for registers but not for addressing mechanisms. | ||
3877 | </p><p> | ||
3878 | The Yocto Project supports the final specifications of x32 psABI | ||
3879 | as follows: | ||
3880 | </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p> | ||
3881 | You can create packages and images in x32 psABI format on | ||
3882 | x86_64 architecture targets. | ||
3883 | </p></li><li class="listitem"><p> | ||
3884 | You can successfully build recipes with the x32 toolchain. | ||
3885 | </p></li><li class="listitem"><p> | ||
3886 | You can create and boot | ||
3887 | <code class="filename">core-image-minimal</code> and | ||
3888 | <code class="filename">core-image-sato</code> images. | ||
3889 | </p></li><li class="listitem"><p> | ||
3890 | RPM Package Manager (RPM) support exists for x32 binaries. | ||
3891 | </p></li><li class="listitem"><p> | ||
3892 | Support for large images exists. | ||
3893 | </p></li></ul></div><p> | ||
3894 | </p><p> | ||
3895 | For steps on how to use x32 psABI, see the | ||
3896 | "<a class="ulink" href="http://www.yoctoproject.org/docs/2.5/dev-manual/dev-manual.html#using-x32-psabi" target="_top">Using x32 psABI</a>" | ||
3897 | section in the Yocto Project Development Tasks Manual. | ||
3898 | </p></div></div> | ||
3899 | |||
3900 | </div></body></html> \ No newline at end of file | ||
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2 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" | 2 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" |
3 | [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > | 3 | [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > |
4 | 4 | ||
5 | <book id='overview-manual' lang='en' | 5 | <book id='getting-started-manual' lang='en' |
6 | xmlns:xi="http://www.w3.org/2003/XInclude" | 6 | xmlns:xi="http://www.w3.org/2003/XInclude" |
7 | xmlns="http://docbook.org/ns/docbook" | 7 | xmlns="http://docbook.org/ns/docbook" |
8 | > | 8 | > |
@@ -10,14 +10,14 @@ | |||
10 | 10 | ||
11 | <mediaobject> | 11 | <mediaobject> |
12 | <imageobject> | 12 | <imageobject> |
13 | <imagedata fileref='figures/overview-title.png' | 13 | <imagedata fileref='figures/getting-started-title.png' |
14 | format='SVG' | 14 | format='SVG' |
15 | align='left' scalefit='1' width='100%'/> | 15 | align='left' scalefit='1' width='100%'/> |
16 | </imageobject> | 16 | </imageobject> |
17 | </mediaobject> | 17 | </mediaobject> |
18 | 18 | ||
19 | <title> | 19 | <title> |
20 | Yocto Project Overview Manual | 20 | Getting Started With Yocto Project |
21 | </title> | 21 | </title> |
22 | 22 | ||
23 | <authorgroup> | 23 | <authorgroup> |
@@ -82,11 +82,11 @@ | |||
82 | 82 | ||
83 | </bookinfo> | 83 | </bookinfo> |
84 | 84 | ||
85 | <xi:include href="overview-manual-intro.xml"/> | 85 | <xi:include href="getting-started-intro.xml"/> |
86 | 86 | ||
87 | <xi:include href="overview-development-environment.xml"/> | 87 | <xi:include href="getting-started-development-environment.xml"/> |
88 | 88 | ||
89 | <xi:include href="overview-concepts.xml"/> | 89 | <xi:include href="getting-started-concepts.xml"/> |
90 | 90 | ||
91 | </book> | 91 | </book> |
92 | <!-- | 92 | <!-- |
diff --git a/documentation/kernel-dev/kernel-dev-advanced.xml b/documentation/kernel-dev/kernel-dev-advanced.xml index 11ab37ffaf..8b4ce45d7d 100644 --- a/documentation/kernel-dev/kernel-dev-advanced.xml +++ b/documentation/kernel-dev/kernel-dev-advanced.xml | |||
@@ -21,7 +21,7 @@ | |||
21 | <para> | 21 | <para> |
22 | Kernel Metadata exists in many places. | 22 | Kernel Metadata exists in many places. |
23 | One area in the Yocto Project | 23 | One area in the Yocto Project |
24 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 24 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
25 | is the <filename>yocto-kernel-cache</filename> Git repository. | 25 | is the <filename>yocto-kernel-cache</filename> Git repository. |
26 | You can find this repository grouped under the "Yocto Linux Kernel" | 26 | You can find this repository grouped under the "Yocto Linux Kernel" |
27 | heading in the | 27 | heading in the |
diff --git a/documentation/kernel-dev/kernel-dev-common.xml b/documentation/kernel-dev/kernel-dev-common.xml index 5b392a144c..d4bed076aa 100644 --- a/documentation/kernel-dev/kernel-dev-common.xml +++ b/documentation/kernel-dev/kernel-dev-common.xml | |||
@@ -79,7 +79,7 @@ | |||
79 | </literallayout> | 79 | </literallayout> |
80 | <note> | 80 | <note> |
81 | The previous commands assume the | 81 | The previous commands assume the |
82 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 82 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
83 | (i.e. <filename>poky</filename>) have been cloned | 83 | (i.e. <filename>poky</filename>) have been cloned |
84 | using Git and the local repository is named | 84 | using Git and the local repository is named |
85 | "poky". | 85 | "poky". |
@@ -303,7 +303,7 @@ | |||
303 | </literallayout> | 303 | </literallayout> |
304 | <note> | 304 | <note> |
305 | The previous commands assume the | 305 | The previous commands assume the |
306 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 306 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
307 | (i.e. <filename>poky</filename>) have been cloned | 307 | (i.e. <filename>poky</filename>) have been cloned |
308 | using Git and the local repository is named | 308 | using Git and the local repository is named |
309 | "poky". | 309 | "poky". |
diff --git a/documentation/kernel-dev/kernel-dev-concepts-appx.xml b/documentation/kernel-dev/kernel-dev-concepts-appx.xml index 231ef9a43d..db692edfab 100644 --- a/documentation/kernel-dev/kernel-dev-concepts-appx.xml +++ b/documentation/kernel-dev/kernel-dev-concepts-appx.xml | |||
@@ -49,7 +49,7 @@ | |||
49 | 49 | ||
50 | <para> | 50 | <para> |
51 | You can find a web interface to the Yocto Linux kernels in the | 51 | You can find a web interface to the Yocto Linux kernels in the |
52 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 52 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
53 | at | 53 | at |
54 | <ulink url='&YOCTO_GIT_URL;'></ulink>. | 54 | <ulink url='&YOCTO_GIT_URL;'></ulink>. |
55 | If you look at the interface, you will see to the left a | 55 | If you look at the interface, you will see to the left a |
@@ -239,7 +239,7 @@ | |||
239 | <ulink url='http://git-scm.com/documentation'></ulink>. | 239 | <ulink url='http://git-scm.com/documentation'></ulink>. |
240 | You can also get an introduction to Git as it | 240 | You can also get an introduction to Git as it |
241 | applies to the Yocto Project in the | 241 | applies to the Yocto Project in the |
242 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink>" | 242 | "<ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink>" |
243 | section in the Yocto Project Overview Manual. | 243 | section in the Yocto Project Overview Manual. |
244 | The latter reference provides an overview of | 244 | The latter reference provides an overview of |
245 | Git and presents a minimal set of Git commands | 245 | Git and presents a minimal set of Git commands |
@@ -381,7 +381,7 @@ | |||
381 | generic kernel just for conceptual purposes. | 381 | generic kernel just for conceptual purposes. |
382 | Also keep in mind that this structure represents the Yocto | 382 | Also keep in mind that this structure represents the Yocto |
383 | Project | 383 | Project |
384 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 384 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
385 | that are either pulled from during the build or established | 385 | that are either pulled from during the build or established |
386 | on the host development system prior to the build by either | 386 | on the host development system prior to the build by either |
387 | cloning a particular kernel's Git repository or by | 387 | cloning a particular kernel's Git repository or by |
diff --git a/documentation/mega-manual/figures/getting-started-title.png b/documentation/mega-manual/figures/getting-started-title.png new file mode 100644 index 0000000000..f38b078ab7 --- /dev/null +++ b/documentation/mega-manual/figures/getting-started-title.png | |||
Binary files differ | |||
diff --git a/documentation/mega-manual/figures/overview-title.png b/documentation/mega-manual/figures/overview-title.png deleted file mode 100644 index c5ec87242e..0000000000 --- a/documentation/mega-manual/figures/overview-title.png +++ /dev/null | |||
Binary files differ | |||
diff --git a/documentation/mega-manual/mega-manual.xml b/documentation/mega-manual/mega-manual.xml index f44e8c4e65..0533530a1c 100644 --- a/documentation/mega-manual/mega-manual.xml +++ b/documentation/mega-manual/mega-manual.xml | |||
@@ -129,20 +129,20 @@ | |||
129 | <xi:include | 129 | <xi:include |
130 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../yocto-project-qs/qs.xml"/> | 130 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../yocto-project-qs/qs.xml"/> |
131 | 131 | ||
132 | <!-- Includes overview-manual title image and then overview-manual chapters --> | 132 | <!-- Includes getting-started title image and then getting-started chapters --> |
133 | 133 | ||
134 | <para> | 134 | <para> |
135 | <imagedata fileref="figures/overview-title.png" width="100%" align="left" scalefit="1" /> | 135 | <imagedata fileref="figures/getting-started-title.png" width="100%" align="left" scalefit="1" /> |
136 | </para> | 136 | </para> |
137 | 137 | ||
138 | <xi:include | 138 | <xi:include |
139 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../overview-manual/overview-manual-intro.xml"/> | 139 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../getting-started/getting-started-intro.xml"/> |
140 | 140 | ||
141 | <xi:include | 141 | <xi:include |
142 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../overview-manual/overview-development-environment.xml"/> | 142 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../getting-started/getting-started-development-environment.xml"/> |
143 | 143 | ||
144 | <xi:include | 144 | <xi:include |
145 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../overview-manual/overview-concepts.xml"/> | 145 | xmlns:xi="http://www.w3.org/2003/XInclude" href="../getting-started/getting-started-concepts.xml"/> |
146 | 146 | ||
147 | <!-- Includes dev-manual title image and then dev-manual chapters --> | 147 | <!-- Includes dev-manual title image and then dev-manual chapters --> |
148 | 148 | ||
diff --git a/documentation/overview-manual/figures/overview-title.png b/documentation/overview-manual/figures/overview-title.png deleted file mode 100644 index c5ec87242e..0000000000 --- a/documentation/overview-manual/figures/overview-title.png +++ /dev/null | |||
Binary files differ | |||
diff --git a/documentation/poky.ent b/documentation/poky.ent index eb2e05151d..490fb96dc0 100644 --- a/documentation/poky.ent +++ b/documentation/poky.ent | |||
@@ -60,6 +60,7 @@ | |||
60 | <!ENTITY YOCTO_DOCS_TOAST_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/toaster-manual/toaster-manual.html"> | 60 | <!ENTITY YOCTO_DOCS_TOAST_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/toaster-manual/toaster-manual.html"> |
61 | <!ENTITY YOCTO_DOCS_SDK_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/sdk-manual/sdk-manual.html"> | 61 | <!ENTITY YOCTO_DOCS_SDK_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/sdk-manual/sdk-manual.html"> |
62 | <!ENTITY YOCTO_DOCS_OVERVIEW_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/overview-manual/overview-manual.html"> | 62 | <!ENTITY YOCTO_DOCS_OVERVIEW_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/overview-manual/overview-manual.html"> |
63 | <!ENTITY YOCTO_DOCS_GS_URL "&YOCTO_DOCS_URL;/&YOCTO_DOC_VERSION;/getting-started/getting-started.html"> | ||
63 | <!ENTITY YOCTO_ADTPATH_DIR "/opt/poky/&DISTRO;"> | 64 | <!ENTITY YOCTO_ADTPATH_DIR "/opt/poky/&DISTRO;"> |
64 | <!ENTITY YOCTO_POKY_TARBALL "&YOCTO_POKY;.tar.bz2"> | 65 | <!ENTITY YOCTO_POKY_TARBALL "&YOCTO_POKY;.tar.bz2"> |
65 | <!ENTITY OE_INIT_PATH "&YOCTO_POKY;/oe-init-build-env"> | 66 | <!ENTITY OE_INIT_PATH "&YOCTO_POKY;/oe-init-build-env"> |
diff --git a/documentation/ref-manual/faq.xml b/documentation/ref-manual/faq.xml index ddb5078454..ecc866cdb3 100644 --- a/documentation/ref-manual/faq.xml +++ b/documentation/ref-manual/faq.xml | |||
@@ -417,7 +417,7 @@ | |||
417 | 417 | ||
418 | <para> | 418 | <para> |
419 | You can find more information on licensing in the | 419 | You can find more information on licensing in the |
420 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#licensing'>Licensing</ulink>" | 420 | "<ulink url='&YOCTO_DOCS_GS_URL;#licensing'>Licensing</ulink>" |
421 | section in the Yocto Project Overview Manual and also in the | 421 | section in the Yocto Project Overview Manual and also in the |
422 | "<ulink url='&YOCTO_DOCS_DEV_URL;#maintaining-open-source-license-compliance-during-your-products-lifecycle'>Maintaining Open Source License Compliance During Your Product's Lifecycle</ulink>" | 422 | "<ulink url='&YOCTO_DOCS_DEV_URL;#maintaining-open-source-license-compliance-during-your-products-lifecycle'>Maintaining Open Source License Compliance During Your Product's Lifecycle</ulink>" |
423 | section in the Yocto Project Development Tasks Manual. | 423 | section in the Yocto Project Development Tasks Manual. |
diff --git a/documentation/ref-manual/migration.xml b/documentation/ref-manual/migration.xml index 01c5a982e2..bccbeed3b9 100644 --- a/documentation/ref-manual/migration.xml +++ b/documentation/ref-manual/migration.xml | |||
@@ -293,7 +293,7 @@ | |||
293 | For the remainder, you can now find them in the | 293 | For the remainder, you can now find them in the |
294 | <filename>meta-extras</filename> repository, which is in the | 294 | <filename>meta-extras</filename> repository, which is in the |
295 | Yocto Project | 295 | Yocto Project |
296 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink>. | 296 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink>. |
297 | </para> | 297 | </para> |
298 | </section> | 298 | </section> |
299 | </section> | 299 | </section> |
@@ -1748,7 +1748,7 @@ | |||
1748 | 1748 | ||
1749 | <para> | 1749 | <para> |
1750 | The minimum | 1750 | The minimum |
1751 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink> version | 1751 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink> version |
1752 | required on the build host is now 1.7.8 because the | 1752 | required on the build host is now 1.7.8 because the |
1753 | <filename>--list</filename> option is now required by | 1753 | <filename>--list</filename> option is now required by |
1754 | BitBake's Git fetcher. | 1754 | BitBake's Git fetcher. |
@@ -4038,7 +4038,7 @@ $ runqemu qemux86-64 tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64. | |||
4038 | <para>For an example, see the | 4038 | <para>For an example, see the |
4039 | <filename>pixbufcache</filename> class in | 4039 | <filename>pixbufcache</filename> class in |
4040 | <filename>meta/classes/</filename> in the Yocto Project | 4040 | <filename>meta/classes/</filename> in the Yocto Project |
4041 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink>. | 4041 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink>. |
4042 | <note> | 4042 | <note> |
4043 | The <filename>SSTATEPOSTINSTFUNCS</filename> variable | 4043 | The <filename>SSTATEPOSTINSTFUNCS</filename> variable |
4044 | itself is now deprecated in favor of the | 4044 | itself is now deprecated in favor of the |
diff --git a/documentation/ref-manual/ref-bitbake.xml b/documentation/ref-manual/ref-bitbake.xml index 7d1dd48128..e848de81b3 100644 --- a/documentation/ref-manual/ref-bitbake.xml +++ b/documentation/ref-manual/ref-bitbake.xml | |||
@@ -350,7 +350,7 @@ | |||
350 | checksums. | 350 | checksums. |
351 | For information on this process, see the | 351 | For information on this process, see the |
352 | <filename>BB_HASHBASE_WHITELIST</filename> example in the | 352 | <filename>BB_HASHBASE_WHITELIST</filename> example in the |
353 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#overview-checksums'>Checksums (Signatures)</ulink>" | 353 | "<ulink url='&YOCTO_DOCS_GS_URL;#overview-checksums'>Checksums (Signatures)</ulink>" |
354 | section in the Yocto Project Overview Manual. | 354 | section in the Yocto Project Overview Manual. |
355 | </note> | 355 | </note> |
356 | </section> | 356 | </section> |
diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml index 3b7ac31e6a..39d740d7d4 100644 --- a/documentation/ref-manual/ref-classes.xml +++ b/documentation/ref-manual/ref-classes.xml | |||
@@ -568,7 +568,7 @@ | |||
568 | provides support for the recipes that build the Canadian | 568 | provides support for the recipes that build the Canadian |
569 | Cross-compilation tools for SDKs. | 569 | Cross-compilation tools for SDKs. |
570 | See the | 570 | See the |
571 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" | 571 | "<ulink url='&YOCTO_DOCS_GS_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" |
572 | section in the Yocto Project Overview Manual for more discussion on | 572 | section in the Yocto Project Overview Manual for more discussion on |
573 | these cross-compilation tools. | 573 | these cross-compilation tools. |
574 | </para> | 574 | </para> |
@@ -582,7 +582,7 @@ | |||
582 | provides support for the recipes that build the cross-compilation | 582 | provides support for the recipes that build the cross-compilation |
583 | tools used for building SDKs. | 583 | tools used for building SDKs. |
584 | See the | 584 | See the |
585 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" | 585 | "<ulink url='&YOCTO_DOCS_GS_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" |
586 | section in the Yocto Project Overview Manual for more discussion on | 586 | section in the Yocto Project Overview Manual for more discussion on |
587 | these cross-compilation tools. | 587 | these cross-compilation tools. |
588 | </para> | 588 | </para> |
@@ -1251,7 +1251,7 @@ | |||
1251 | "<ulink url='&YOCTO_DOCS_DEV_URL;#usingpoky-extend-customimage'>Customizing Images</ulink>" | 1251 | "<ulink url='&YOCTO_DOCS_DEV_URL;#usingpoky-extend-customimage'>Customizing Images</ulink>" |
1252 | section in the Yocto Project Development Tasks Manual. | 1252 | section in the Yocto Project Development Tasks Manual. |
1253 | For information on how images are created, see the | 1253 | For information on how images are created, see the |
1254 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#images-dev-environment'>Images</ulink>" | 1254 | "<ulink url='&YOCTO_DOCS_GS_URL;#images-dev-environment'>Images</ulink>" |
1255 | section in the Yocto Project Overview Manual. | 1255 | section in the Yocto Project Overview Manual. |
1256 | </para> | 1256 | </para> |
1257 | </section> | 1257 | </section> |
@@ -2722,7 +2722,7 @@ This check was removed for YP 2.3 release | |||
2722 | <para> | 2722 | <para> |
2723 | For more information on the cross-development toolchain | 2723 | For more information on the cross-development toolchain |
2724 | generation, see the | 2724 | generation, see the |
2725 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" | 2725 | "<ulink url='&YOCTO_DOCS_GS_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" |
2726 | section in the Yocto Project Overview Manual. | 2726 | section in the Yocto Project Overview Manual. |
2727 | For information on advantages gained when building a | 2727 | For information on advantages gained when building a |
2728 | cross-development toolchain using the | 2728 | cross-development toolchain using the |
@@ -3020,7 +3020,7 @@ This check was removed for YP 2.3 release | |||
3020 | 3020 | ||
3021 | <para> | 3021 | <para> |
3022 | For information on how root filesystem images are created, see the | 3022 | For information on how root filesystem images are created, see the |
3023 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#image-generation-dev-environment'>Image Generation</ulink>" | 3023 | "<ulink url='&YOCTO_DOCS_GS_URL;#image-generation-dev-environment'>Image Generation</ulink>" |
3024 | section in the Yocto Project Overview Manual. | 3024 | section in the Yocto Project Overview Manual. |
3025 | </para> | 3025 | </para> |
3026 | </section> | 3026 | </section> |
@@ -3182,7 +3182,7 @@ This check was removed for YP 2.3 release | |||
3182 | 3182 | ||
3183 | <para> | 3183 | <para> |
3184 | For more information on sstate, see the | 3184 | For more information on sstate, see the |
3185 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>Shared State Cache</ulink>" | 3185 | "<ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>Shared State Cache</ulink>" |
3186 | section in the Yocto Project Overview Manual. | 3186 | section in the Yocto Project Overview Manual. |
3187 | </para> | 3187 | </para> |
3188 | </section> | 3188 | </section> |
diff --git a/documentation/ref-manual/ref-images.xml b/documentation/ref-manual/ref-images.xml index fd6d5aabe9..58f33cda2a 100644 --- a/documentation/ref-manual/ref-images.xml +++ b/documentation/ref-manual/ref-images.xml | |||
@@ -151,7 +151,7 @@ | |||
151 | This image provides the Wayland protocol libraries and the | 151 | This image provides the Wayland protocol libraries and the |
152 | reference Weston compositor. | 152 | reference Weston compositor. |
153 | For more information, see the | 153 | For more information, see the |
154 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#wayland'>Wayland</ulink>" | 154 | "<ulink url='&YOCTO_DOCS_GS_URL;#wayland'>Wayland</ulink>" |
155 | section in the Yocto Project Overview Manual. | 155 | section in the Yocto Project Overview Manual. |
156 | </para></listitem> | 156 | </para></listitem> |
157 | <listitem><para><filename>core-image-x11</filename>: | 157 | <listitem><para><filename>core-image-x11</filename>: |
diff --git a/documentation/ref-manual/ref-release-process.xml b/documentation/ref-manual/ref-release-process.xml index 1b36932e21..d8ead1399b 100644 --- a/documentation/ref-manual/ref-release-process.xml +++ b/documentation/ref-manual/ref-release-process.xml | |||
@@ -61,7 +61,7 @@ | |||
61 | <para> | 61 | <para> |
62 | Each major release receives a codename that identifies the release in | 62 | Each major release receives a codename that identifies the release in |
63 | the | 63 | the |
64 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink>. | 64 | <ulink url='&YOCTO_DOCS_GS_URL;#yocto-project-repositories'>Yocto Project Source Repositories</ulink>. |
65 | The concept is that branches of | 65 | The concept is that branches of |
66 | <link linkend='metadata'>Metadata</link> | 66 | <link linkend='metadata'>Metadata</link> |
67 | with the same codename are likely to be compatible and thus | 67 | with the same codename are likely to be compatible and thus |
@@ -217,7 +217,7 @@ | |||
217 | in the <filename>poky</filename> repository. | 217 | in the <filename>poky</filename> repository. |
218 | <note> | 218 | <note> |
219 | You can find all these branches in the Yocto Project | 219 | You can find all these branches in the Yocto Project |
220 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink>. | 220 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink>. |
221 | </note> | 221 | </note> |
222 | Testing within these public branches ensures in a publicly visible way | 222 | Testing within these public branches ensures in a publicly visible way |
223 | that all of the main supposed architectures and recipes in OE-Core | 223 | that all of the main supposed architectures and recipes in OE-Core |
diff --git a/documentation/ref-manual/ref-structure.xml b/documentation/ref-manual/ref-structure.xml index 7a2371d8b3..1dff8f81f9 100644 --- a/documentation/ref-manual/ref-structure.xml +++ b/documentation/ref-manual/ref-structure.xml | |||
@@ -520,9 +520,9 @@ | |||
520 | variable points to this directory. | 520 | variable points to this directory. |
521 | For more detail on the contents of the <filename>deploy</filename> | 521 | For more detail on the contents of the <filename>deploy</filename> |
522 | directory, see the | 522 | directory, see the |
523 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#images-dev-environment'>Images</ulink>" | 523 | "<ulink url='&YOCTO_DOCS_GS_URL;#images-dev-environment'>Images</ulink>" |
524 | and | 524 | and |
525 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#sdk-dev-environment'>Application Development SDK</ulink>" | 525 | "<ulink url='&YOCTO_DOCS_GS_URL;#sdk-dev-environment'>Application Development SDK</ulink>" |
526 | sections in the Yocto Project Overview Manual. | 526 | sections in the Yocto Project Overview Manual. |
527 | </para> | 527 | </para> |
528 | </section> | 528 | </section> |
@@ -696,7 +696,7 @@ | |||
696 | <para> | 696 | <para> |
697 | For information on how BitBake uses stamp files to determine if | 697 | For information on how BitBake uses stamp files to determine if |
698 | a task should be rerun, see the | 698 | a task should be rerun, see the |
699 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</ulink>" | 699 | "<ulink url='&YOCTO_DOCS_GS_URL;#stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</ulink>" |
700 | section in the Yocto Project Overview Manual. | 700 | section in the Yocto Project Overview Manual. |
701 | </para> | 701 | </para> |
702 | </section> | 702 | </section> |
diff --git a/documentation/ref-manual/ref-system-requirements.xml b/documentation/ref-manual/ref-system-requirements.xml index baeb116a26..4e4e0de514 100644 --- a/documentation/ref-manual/ref-system-requirements.xml +++ b/documentation/ref-manual/ref-system-requirements.xml | |||
@@ -21,7 +21,7 @@ | |||
21 | <para> | 21 | <para> |
22 | For introductory information on the Yocto Project, see the | 22 | For introductory information on the Yocto Project, see the |
23 | <ulink url='&YOCTO_HOME_URL;'>Yocto Project Website</ulink> and the | 23 | <ulink url='&YOCTO_HOME_URL;'>Yocto Project Website</ulink> and the |
24 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#overview-development-environment'>Yocto Project Development Environment</ulink>" | 24 | "<ulink url='&YOCTO_DOCS_GS_URL;#overview-development-environment'>Yocto Project Development Environment</ulink>" |
25 | chapter in the Yocto Project Overview Manual. | 25 | chapter in the Yocto Project Overview Manual. |
26 | </para> | 26 | </para> |
27 | 27 | ||
diff --git a/documentation/ref-manual/ref-tasks.xml b/documentation/ref-manual/ref-tasks.xml index 4fa64c0d60..262dec8311 100644 --- a/documentation/ref-manual/ref-tasks.xml +++ b/documentation/ref-manual/ref-tasks.xml | |||
@@ -220,7 +220,7 @@ | |||
220 | 220 | ||
221 | <para> | 221 | <para> |
222 | For more information on image creation, see the | 222 | For more information on image creation, see the |
223 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#image-generation-dev-environment'>Image Generation</ulink>" | 223 | "<ulink url='&YOCTO_DOCS_GS_URL;#image-generation-dev-environment'>Image Generation</ulink>" |
224 | section in the Yocto Project Overview Manual. | 224 | section in the Yocto Project Overview Manual. |
225 | </para> | 225 | </para> |
226 | </section> | 226 | </section> |
@@ -246,7 +246,7 @@ | |||
246 | 246 | ||
247 | <para> | 247 | <para> |
248 | For more information on image creation, see the | 248 | For more information on image creation, see the |
249 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#image-generation-dev-environment'>Image Generation</ulink>" | 249 | "<ulink url='&YOCTO_DOCS_GS_URL;#image-generation-dev-environment'>Image Generation</ulink>" |
250 | section in the Yocto Project Overview Manual. | 250 | section in the Yocto Project Overview Manual. |
251 | </para> | 251 | </para> |
252 | </section> | 252 | </section> |
@@ -268,7 +268,7 @@ | |||
268 | and | 268 | and |
269 | <link linkend='ref-tasks-rootfs'><filename>do_rootfs</filename></link>), | 269 | <link linkend='ref-tasks-rootfs'><filename>do_rootfs</filename></link>), |
270 | run under | 270 | run under |
271 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#fakeroot-and-pseudo'>fakeroot</ulink>. | 271 | <ulink url='&YOCTO_DOCS_GS_URL;#fakeroot-and-pseudo'>fakeroot</ulink>. |
272 | <note> | 272 | <note> |
273 | <title>Caution</title> | 273 | <title>Caution</title> |
274 | 274 | ||
@@ -342,7 +342,7 @@ | |||
342 | For additional information, see the | 342 | For additional information, see the |
343 | <link linkend='var-PKGDESTWORK'><filename>PKGDESTWORK</filename></link> | 343 | <link linkend='var-PKGDESTWORK'><filename>PKGDESTWORK</filename></link> |
344 | variable and the | 344 | variable and the |
345 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 345 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
346 | section in the Yocto Project Overview Manual. | 346 | section in the Yocto Project Overview Manual. |
347 | </para> | 347 | </para> |
348 | </section> | 348 | </section> |
@@ -367,7 +367,7 @@ | |||
367 | <filename>${</filename><link linkend='var-DEPLOY_DIR_DEB'><filename>DEPLOY_DIR_DEB</filename></link><filename>}</filename> | 367 | <filename>${</filename><link linkend='var-DEPLOY_DIR_DEB'><filename>DEPLOY_DIR_DEB</filename></link><filename>}</filename> |
368 | directory in the package feeds area. | 368 | directory in the package feeds area. |
369 | For more information, see the | 369 | For more information, see the |
370 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 370 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
371 | section in the Yocto Project Overview Manual. | 371 | section in the Yocto Project Overview Manual. |
372 | </para> | 372 | </para> |
373 | </section> | 373 | </section> |
@@ -381,7 +381,7 @@ | |||
381 | <filename>${</filename><link linkend='var-DEPLOY_DIR_IPK'><filename>DEPLOY_DIR_IPK</filename></link><filename>}</filename> | 381 | <filename>${</filename><link linkend='var-DEPLOY_DIR_IPK'><filename>DEPLOY_DIR_IPK</filename></link><filename>}</filename> |
382 | directory in the package feeds area. | 382 | directory in the package feeds area. |
383 | For more information, see the | 383 | For more information, see the |
384 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 384 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
385 | section in the Yocto Project Overview Manual. | 385 | section in the Yocto Project Overview Manual. |
386 | </para> | 386 | </para> |
387 | </section> | 387 | </section> |
@@ -395,7 +395,7 @@ | |||
395 | <filename>${</filename><link linkend='var-DEPLOY_DIR_RPM'><filename>DEPLOY_DIR_RPM</filename></link><filename>}</filename> | 395 | <filename>${</filename><link linkend='var-DEPLOY_DIR_RPM'><filename>DEPLOY_DIR_RPM</filename></link><filename>}</filename> |
396 | directory in the package feeds area. | 396 | directory in the package feeds area. |
397 | For more information, see the | 397 | For more information, see the |
398 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 398 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
399 | section in the Yocto Project Overview Manual. | 399 | section in the Yocto Project Overview Manual. |
400 | </para> | 400 | </para> |
401 | </section> | 401 | </section> |
@@ -408,7 +408,7 @@ | |||
408 | <filename>${</filename><link linkend='var-DEPLOY_DIR_TAR'><filename>DEPLOY_DIR_TAR</filename></link><filename>}</filename> | 408 | <filename>${</filename><link linkend='var-DEPLOY_DIR_TAR'><filename>DEPLOY_DIR_TAR</filename></link><filename>}</filename> |
409 | directory in the package feeds area. | 409 | directory in the package feeds area. |
410 | For more information, see the | 410 | For more information, see the |
411 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 411 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
412 | section Yocto Project Overview Manual. | 412 | section Yocto Project Overview Manual. |
413 | </para> | 413 | </para> |
414 | </section> | 414 | </section> |
@@ -431,7 +431,7 @@ | |||
431 | <para> | 431 | <para> |
432 | Locates patch files and applies them to the source code. | 432 | Locates patch files and applies them to the source code. |
433 | See the | 433 | See the |
434 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#patching-dev-environment'>Patching</ulink>" | 434 | "<ulink url='&YOCTO_DOCS_GS_URL;#patching-dev-environment'>Patching</ulink>" |
435 | section in the Yocto Project Overview Manual for more information. | 435 | section in the Yocto Project Overview Manual for more information. |
436 | </para> | 436 | </para> |
437 | </section> | 437 | </section> |
@@ -451,7 +451,7 @@ | |||
451 | <para> | 451 | <para> |
452 | Creates the file and directory structure for an installable SDK. | 452 | Creates the file and directory structure for an installable SDK. |
453 | See the | 453 | See the |
454 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#sdk-generation-dev-environment'>SDK Generation</ulink>" | 454 | "<ulink url='&YOCTO_DOCS_GS_URL;#sdk-generation-dev-environment'>SDK Generation</ulink>" |
455 | section in the Yocto Project Overview Manual for more information. | 455 | section in the Yocto Project Overview Manual for more information. |
456 | </para> | 456 | </para> |
457 | </section> | 457 | </section> |
@@ -538,7 +538,7 @@ | |||
538 | <link linkend='var-S'><filename>S</filename></link> variable also | 538 | <link linkend='var-S'><filename>S</filename></link> variable also |
539 | plays a role in where unpacked source files ultimately reside. | 539 | plays a role in where unpacked source files ultimately reside. |
540 | For more information on how source files are unpacked, see the | 540 | For more information on how source files are unpacked, see the |
541 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-fetching-dev-environment'>Source Fetching</ulink>" | 541 | "<ulink url='&YOCTO_DOCS_GS_URL;#source-fetching-dev-environment'>Source Fetching</ulink>" |
542 | section in the Yocto Project Overview Manual and also see the | 542 | section in the Yocto Project Overview Manual and also see the |
543 | <filename>WORKDIR</filename> and | 543 | <filename>WORKDIR</filename> and |
544 | <filename>S</filename> variable descriptions. | 544 | <filename>S</filename> variable descriptions. |
@@ -628,7 +628,7 @@ | |||
628 | 628 | ||
629 | <para> | 629 | <para> |
630 | Running this task does not remove the | 630 | Running this task does not remove the |
631 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>sstate</ulink> | 631 | <ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>sstate</ulink> |
632 | cache files. | 632 | cache files. |
633 | Consequently, if no changes have been made and the recipe is | 633 | Consequently, if no changes have been made and the recipe is |
634 | rebuilt after cleaning, output files are simply restored from the | 634 | rebuilt after cleaning, output files are simply restored from the |
@@ -645,7 +645,7 @@ | |||
645 | 645 | ||
646 | <para> | 646 | <para> |
647 | Removes all output files, shared state | 647 | Removes all output files, shared state |
648 | (<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>sstate</ulink>) | 648 | (<ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>sstate</ulink>) |
649 | cache, and downloaded source files for a target (i.e. the contents | 649 | cache, and downloaded source files for a target (i.e. the contents |
650 | of | 650 | of |
651 | <link linkend='var-DL_DIR'><filename>DL_DIR</filename></link>). | 651 | <link linkend='var-DL_DIR'><filename>DL_DIR</filename></link>). |
@@ -676,13 +676,13 @@ | |||
676 | 676 | ||
677 | <para> | 677 | <para> |
678 | Removes all output files and shared state | 678 | Removes all output files and shared state |
679 | (<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>sstate</ulink>) | 679 | (<ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>sstate</ulink>) |
680 | cache for a target. | 680 | cache for a target. |
681 | Essentially, the <filename>do_cleansstate</filename> task is | 681 | Essentially, the <filename>do_cleansstate</filename> task is |
682 | identical to the | 682 | identical to the |
683 | <link linkend='ref-tasks-clean'><filename>do_clean</filename></link> | 683 | <link linkend='ref-tasks-clean'><filename>do_clean</filename></link> |
684 | task with the added removal of shared state | 684 | task with the added removal of shared state |
685 | (<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>sstate</ulink>) | 685 | (<ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>sstate</ulink>) |
686 | cache. | 686 | cache. |
687 | </para> | 687 | </para> |
688 | 688 | ||
@@ -760,7 +760,7 @@ | |||
760 | 760 | ||
761 | <para> | 761 | <para> |
762 | Creates or updates the index in the | 762 | Creates or updates the index in the |
763 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink> | 763 | <ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink> |
764 | area. | 764 | area. |
765 | <note> | 765 | <note> |
766 | This task is not triggered with the | 766 | This task is not triggered with the |
@@ -812,7 +812,7 @@ | |||
812 | Creates the root filesystem (file and directory structure) for an | 812 | Creates the root filesystem (file and directory structure) for an |
813 | image. | 813 | image. |
814 | See the | 814 | See the |
815 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#image-generation-dev-environment'>Image Generation</ulink>" | 815 | "<ulink url='&YOCTO_DOCS_GS_URL;#image-generation-dev-environment'>Image Generation</ulink>" |
816 | section in the Yocto Project Overview Manual for more information | 816 | section in the Yocto Project Overview Manual for more information |
817 | on how the root filesystem is created. | 817 | on how the root filesystem is created. |
818 | </para> | 818 | </para> |
diff --git a/documentation/ref-manual/ref-terms.xml b/documentation/ref-manual/ref-terms.xml index 237e765202..9e38e98693 100644 --- a/documentation/ref-manual/ref-terms.xml +++ b/documentation/ref-manual/ref-terms.xml | |||
@@ -181,7 +181,7 @@ | |||
181 | <para>Creation of these toolchains is simple and automated. | 181 | <para>Creation of these toolchains is simple and automated. |
182 | For information on toolchain concepts as they apply to the | 182 | For information on toolchain concepts as they apply to the |
183 | Yocto Project, see the | 183 | Yocto Project, see the |
184 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" | 184 | "<ulink url='&YOCTO_DOCS_GS_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" |
185 | section in the Yocto Project Overview Manual. | 185 | section in the Yocto Project Overview Manual. |
186 | You can also find more information on using the | 186 | You can also find more information on using the |
187 | relocatable toolchain in the | 187 | relocatable toolchain in the |
@@ -399,7 +399,7 @@ | |||
399 | 399 | ||
400 | <para>For more information on concepts related to Git | 400 | <para>For more information on concepts related to Git |
401 | repositories, branches, and tags, see the | 401 | repositories, branches, and tags, see the |
402 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#repositories-tags-and-branches'>Repositories, Tags, and Branches</ulink>" | 402 | "<ulink url='&YOCTO_DOCS_GS_URL;#repositories-tags-and-branches'>Repositories, Tags, and Branches</ulink>" |
403 | section in the Yocto Project Overview Manual. | 403 | section in the Yocto Project Overview Manual. |
404 | </para></listitem> | 404 | </para></listitem> |
405 | <listitem><para><emphasis>Task:</emphasis> | 405 | <listitem><para><emphasis>Task:</emphasis> |
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml index 334336880b..f09e0b6ae4 100644 --- a/documentation/ref-manual/ref-variables.xml +++ b/documentation/ref-manual/ref-variables.xml | |||
@@ -3017,7 +3017,7 @@ | |||
3017 | <note><title>Caution</title> | 3017 | <note><title>Caution</title> |
3018 | Tasks that read from or write to this directory should | 3018 | Tasks that read from or write to this directory should |
3019 | run under | 3019 | run under |
3020 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#fakeroot-and-pseudo'>fakeroot</ulink>. | 3020 | <ulink url='&YOCTO_DOCS_GS_URL;#fakeroot-and-pseudo'>fakeroot</ulink>. |
3021 | </note> | 3021 | </note> |
3022 | </para> | 3022 | </para> |
3023 | </glossdef> | 3023 | </glossdef> |
@@ -3264,7 +3264,7 @@ | |||
3264 | add any runtime dependencies between the | 3264 | add any runtime dependencies between the |
3265 | packages produced by the two recipes. | 3265 | packages produced by the two recipes. |
3266 | However, as explained in the | 3266 | However, as explained in the |
3267 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 3267 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
3268 | section in the Yocto Project Overview Manual, | 3268 | section in the Yocto Project Overview Manual, |
3269 | runtime dependencies will often be | 3269 | runtime dependencies will often be |
3270 | added automatically, meaning | 3270 | added automatically, meaning |
@@ -3329,11 +3329,11 @@ | |||
3329 | section. | 3329 | section. |
3330 | For more detail on the contents of the | 3330 | For more detail on the contents of the |
3331 | <filename>deploy</filename> directory, see the | 3331 | <filename>deploy</filename> directory, see the |
3332 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#images-dev-environment'>Images</ulink>" | 3332 | "<ulink url='&YOCTO_DOCS_GS_URL;#images-dev-environment'>Images</ulink>" |
3333 | section, the | 3333 | section, the |
3334 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 3334 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
3335 | section, and the | 3335 | section, and the |
3336 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#sdk-dev-environment'>Application Development SDK</ulink>" | 3336 | "<ulink url='&YOCTO_DOCS_GS_URL;#sdk-dev-environment'>Application Development SDK</ulink>" |
3337 | sections all in the Yocto Project Overview Manual. | 3337 | sections all in the Yocto Project Overview Manual. |
3338 | </para> | 3338 | </para> |
3339 | </glossdef> | 3339 | </glossdef> |
@@ -3373,7 +3373,7 @@ | |||
3373 | <link linkend='ref-tasks-package_write_deb'><filename>do_package_write_deb</filename></link> | 3373 | <link linkend='ref-tasks-package_write_deb'><filename>do_package_write_deb</filename></link> |
3374 | task writes Debian packages into the appropriate folder. | 3374 | task writes Debian packages into the appropriate folder. |
3375 | For more information on how packaging works, see the | 3375 | For more information on how packaging works, see the |
3376 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 3376 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
3377 | section in the Yocto Project Overview Manual. | 3377 | section in the Yocto Project Overview Manual. |
3378 | </para> | 3378 | </para> |
3379 | </glossdef> | 3379 | </glossdef> |
@@ -3403,9 +3403,9 @@ | |||
3403 | section. | 3403 | section. |
3404 | For more detail on the contents of the | 3404 | For more detail on the contents of the |
3405 | <filename>deploy</filename> directory, see the | 3405 | <filename>deploy</filename> directory, see the |
3406 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#images-dev-environment'>Images</ulink>" | 3406 | "<ulink url='&YOCTO_DOCS_GS_URL;#images-dev-environment'>Images</ulink>" |
3407 | and | 3407 | and |
3408 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#sdk-dev-environment'>Application Development SDK</ulink>" | 3408 | "<ulink url='&YOCTO_DOCS_GS_URL;#sdk-dev-environment'>Application Development SDK</ulink>" |
3409 | sections both in the Yocto Project Overview Manual. | 3409 | sections both in the Yocto Project Overview Manual. |
3410 | </para> | 3410 | </para> |
3411 | </glossdef> | 3411 | </glossdef> |
@@ -3444,7 +3444,7 @@ | |||
3444 | <link linkend='ref-tasks-package_write_ipk'><filename>do_package_write_ipk</filename></link> | 3444 | <link linkend='ref-tasks-package_write_ipk'><filename>do_package_write_ipk</filename></link> |
3445 | task writes IPK packages into the appropriate folder. | 3445 | task writes IPK packages into the appropriate folder. |
3446 | For more information on how packaging works, see the | 3446 | For more information on how packaging works, see the |
3447 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 3447 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
3448 | section in the Yocto Project Overview Manual. | 3448 | section in the Yocto Project Overview Manual. |
3449 | </para> | 3449 | </para> |
3450 | </glossdef> | 3450 | </glossdef> |
@@ -3483,7 +3483,7 @@ | |||
3483 | <link linkend='ref-tasks-package_write_rpm'><filename>do_package_write_rpm</filename></link> | 3483 | <link linkend='ref-tasks-package_write_rpm'><filename>do_package_write_rpm</filename></link> |
3484 | task writes RPM packages into the appropriate folder. | 3484 | task writes RPM packages into the appropriate folder. |
3485 | For more information on how packaging works, see the | 3485 | For more information on how packaging works, see the |
3486 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 3486 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
3487 | section. | 3487 | section. |
3488 | </para> | 3488 | </para> |
3489 | </glossdef> | 3489 | </glossdef> |
@@ -3522,7 +3522,7 @@ | |||
3522 | <link linkend='ref-tasks-package_write_tar'><filename>do_package_write_tar</filename></link> | 3522 | <link linkend='ref-tasks-package_write_tar'><filename>do_package_write_tar</filename></link> |
3523 | task writes TAR packages into the appropriate folder. | 3523 | task writes TAR packages into the appropriate folder. |
3524 | For more information on how packaging works, see the | 3524 | For more information on how packaging works, see the |
3525 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" | 3525 | "<ulink url='&YOCTO_DOCS_GS_URL;#package-feeds-dev-environment'>Package Feeds</ulink>" |
3526 | section in the Yocto Project Overview Manual. | 3526 | section in the Yocto Project Overview Manual. |
3527 | </para> | 3527 | </para> |
3528 | </glossdef> | 3528 | </glossdef> |
@@ -4864,7 +4864,7 @@ | |||
4864 | The previous statement appears in the | 4864 | The previous statement appears in the |
4865 | <filename>linux-yocto-dev.bbappend</filename> file, which | 4865 | <filename>linux-yocto-dev.bbappend</filename> file, which |
4866 | is found in the Yocto Project | 4866 | is found in the Yocto Project |
4867 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#source-repositories'>Source Repositories</ulink> | 4867 | <ulink url='&YOCTO_DOCS_GS_URL;#source-repositories'>Source Repositories</ulink> |
4868 | in | 4868 | in |
4869 | <filename>meta-intel/common/recipes-kernel/linux</filename>. | 4869 | <filename>meta-intel/common/recipes-kernel/linux</filename>. |
4870 | Here, the machine override is a special | 4870 | Here, the machine override is a special |
@@ -6084,7 +6084,7 @@ | |||
6084 | variables. | 6084 | variables. |
6085 | You can find information on how the image | 6085 | You can find information on how the image |
6086 | is created in the | 6086 | is created in the |
6087 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#image-generation-dev-environment'>Image Generation</ulink>" | 6087 | "<ulink url='&YOCTO_DOCS_GS_URL;#image-generation-dev-environment'>Image Generation</ulink>" |
6088 | section in the Yocto Project Overview Manual. | 6088 | section in the Yocto Project Overview Manual. |
6089 | </para> | 6089 | </para> |
6090 | </glossdef> | 6090 | </glossdef> |
@@ -7911,7 +7911,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
7911 | <link linkend='var-LICENSE'><filename>LICENSE</filename></link> | 7911 | <link linkend='var-LICENSE'><filename>LICENSE</filename></link> |
7912 | is set to "CLOSED").</para> | 7912 | is set to "CLOSED").</para> |
7913 | <para>For more information, see the | 7913 | <para>For more information, see the |
7914 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#usingpoky-configuring-LIC_FILES_CHKSUM'>Tracking License Changes</ulink>" | 7914 | "<ulink url='&YOCTO_DOCS_GS_URL;#usingpoky-configuring-LIC_FILES_CHKSUM'>Tracking License Changes</ulink>" |
7915 | section in the Yocto Project Overview Manual. | 7915 | section in the Yocto Project Overview Manual. |
7916 | </para> | 7916 | </para> |
7917 | </glossdef> | 7917 | </glossdef> |
@@ -8047,7 +8047,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
8047 | require additional licenses in order to be used in a | 8047 | require additional licenses in order to be used in a |
8048 | commercial product. | 8048 | commercial product. |
8049 | For more information, see the | 8049 | For more information, see the |
8050 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#enabling-commercially-licensed-recipes'>Enabling Commercially Licensed Recipes</ulink>" | 8050 | "<ulink url='&YOCTO_DOCS_GS_URL;#enabling-commercially-licensed-recipes'>Enabling Commercially Licensed Recipes</ulink>" |
8051 | section in the Yocto Project Overview Manual. | 8051 | section in the Yocto Project Overview Manual. |
8052 | </para> | 8052 | </para> |
8053 | </glossdef> | 8053 | </glossdef> |
@@ -8067,7 +8067,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
8067 | This practice is otherwise known as "whitelisting" | 8067 | This practice is otherwise known as "whitelisting" |
8068 | license flags. | 8068 | license flags. |
8069 | For more information, see the | 8069 | For more information, see the |
8070 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#enabling-commercially-licensed-recipes'>Enabling Commercially Licensed Recipes</ulink>" | 8070 | <ulink url='&YOCTO_DOCS_GS_URL;#enabling-commercially-licensed-recipes'>Enabling Commercially Licensed Recipes</ulink>" |
8071 | section in the Yocto Project Overview Manual. | 8071 | section in the Yocto Project Overview Manual. |
8072 | </para> | 8072 | </para> |
8073 | </glossdef> | 8073 | </glossdef> |
@@ -10412,7 +10412,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
10412 | ${STAGING_DIR_HOST}/pkgdata | 10412 | ${STAGING_DIR_HOST}/pkgdata |
10413 | </literallayout> | 10413 | </literallayout> |
10414 | For examples of how this data is used, see the | 10414 | For examples of how this data is used, see the |
10415 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 10415 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
10416 | section in the Yocto Project Overview Manual and the | 10416 | section in the Yocto Project Overview Manual and the |
10417 | "<ulink url='&YOCTO_DOCS_DEV_URL;#viewing-package-information-with-oe-pkgdata-util'>Viewing Package Information with <filename>oe-pkgdata-util</filename></ulink>" | 10417 | "<ulink url='&YOCTO_DOCS_DEV_URL;#viewing-package-information-with-oe-pkgdata-util'>Viewing Package Information with <filename>oe-pkgdata-util</filename></ulink>" |
10418 | section in the Yocto Project Development Tasks Manual. | 10418 | section in the Yocto Project Development Tasks Manual. |
@@ -10659,11 +10659,11 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
10659 | <filename>PR</filename> to know when to rebuild a | 10659 | <filename>PR</filename> to know when to rebuild a |
10660 | recipe. | 10660 | recipe. |
10661 | The build system uses the task | 10661 | The build system uses the task |
10662 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#overview-checksums'>input checksums</ulink> | 10662 | <ulink url='&YOCTO_DOCS_GS_URL;#overview-checksums'>input checksums</ulink> |
10663 | along with the | 10663 | along with the |
10664 | <link linkend='structure-build-tmp-stamps'>stamp</link> | 10664 | <link linkend='structure-build-tmp-stamps'>stamp</link> |
10665 | and | 10665 | and |
10666 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#shared-state-cache'>shared state cache</ulink> | 10666 | <ulink url='&YOCTO_DOCS_GS_URL;#shared-state-cache'>shared state cache</ulink> |
10667 | mechanisms. | 10667 | mechanisms. |
10668 | </note> | 10668 | </note> |
10669 | The <filename>PR</filename> variable primarily becomes | 10669 | The <filename>PR</filename> variable primarily becomes |
@@ -10715,7 +10715,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
10715 | PREFERRED_PROVIDER_virtual/libgl ?= "mesa" | 10715 | PREFERRED_PROVIDER_virtual/libgl ?= "mesa" |
10716 | </literallayout> | 10716 | </literallayout> |
10717 | For more information, see the | 10717 | For more information, see the |
10718 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#metadata-virtual-providers'>Metadata (Virtual Providers)</ulink>" | 10718 | "<ulink url='&YOCTO_DOCS_GS_URL;#metadata-virtual-providers'>Metadata (Virtual Providers)</ulink>" |
10719 | section in the Yocto Project Overview Manual. | 10719 | section in the Yocto Project Overview Manual. |
10720 | <note> | 10720 | <note> |
10721 | If you set <filename>PREFERRED_PROVIDER</filename> | 10721 | If you set <filename>PREFERRED_PROVIDER</filename> |
@@ -10919,7 +10919,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
10919 | 10919 | ||
10920 | <para> | 10920 | <para> |
10921 | For more information, see the | 10921 | For more information, see the |
10922 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 10922 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
10923 | section in the Yocto Project Overview Manual. | 10923 | section in the Yocto Project Overview Manual. |
10924 | </para> | 10924 | </para> |
10925 | </glossdef> | 10925 | </glossdef> |
@@ -11236,7 +11236,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
11236 | Therefore, most recipes do not need to set | 11236 | Therefore, most recipes do not need to set |
11237 | <filename>RDEPENDS</filename>. | 11237 | <filename>RDEPENDS</filename>. |
11238 | For more information, see the | 11238 | For more information, see the |
11239 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" | 11239 | "<ulink url='&YOCTO_DOCS_GS_URL;#automatically-added-runtime-dependencies'>Automatically Added Runtime Dependencies</ulink>" |
11240 | section in the Yocto Project Overview Manual. | 11240 | section in the Yocto Project Overview Manual. |
11241 | </para> | 11241 | </para> |
11242 | 11242 | ||
@@ -13695,7 +13695,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
13695 | <para> | 13695 | <para> |
13696 | For information on how BitBake uses stamp files to determine | 13696 | For information on how BitBake uses stamp files to determine |
13697 | if a task should be rerun, see the | 13697 | if a task should be rerun, see the |
13698 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</ulink>" | 13698 | "<ulink url='&YOCTO_DOCS_GS_URL;#stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</ulink>" |
13699 | section in the Yocto Project Overview Manual. | 13699 | section in the Yocto Project Overview Manual. |
13700 | </para> | 13700 | </para> |
13701 | 13701 | ||
@@ -15187,7 +15187,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
15187 | <para> | 15187 | <para> |
15188 | For background information on cross-development toolchains | 15188 | For background information on cross-development toolchains |
15189 | in the Yocto Project development environment, see the | 15189 | in the Yocto Project development environment, see the |
15190 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" | 15190 | "<ulink url='&YOCTO_DOCS_GS_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" |
15191 | section in the Yocto Project Overview Manual. | 15191 | section in the Yocto Project Overview Manual. |
15192 | For information on setting up a cross-development | 15192 | For information on setting up a cross-development |
15193 | environment, see the | 15193 | environment, see the |
@@ -15246,7 +15246,7 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3" | |||
15246 | <para> | 15246 | <para> |
15247 | For background information on cross-development toolchains | 15247 | For background information on cross-development toolchains |
15248 | in the Yocto Project development environment, see the | 15248 | in the Yocto Project development environment, see the |
15249 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" | 15249 | "<ulink url='&YOCTO_DOCS_GS_URL;#cross-development-toolchain-generation'>Cross-Development Toolchain Generation</ulink>" |
15250 | section in the Yocto Project Overview Manual. | 15250 | section in the Yocto Project Overview Manual. |
15251 | For information on setting up a cross-development | 15251 | For information on setting up a cross-development |
15252 | environment, see the | 15252 | environment, see the |
diff --git a/documentation/ref-manual/resources.xml b/documentation/ref-manual/resources.xml index 3076de2e5e..09feddd29f 100644 --- a/documentation/ref-manual/resources.xml +++ b/documentation/ref-manual/resources.xml | |||
@@ -167,7 +167,7 @@ | |||
167 | </para></listitem> | 167 | </para></listitem> |
168 | <listitem><para> | 168 | <listitem><para> |
169 | <emphasis> | 169 | <emphasis> |
170 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;'>Yocto Project Overview Manual</ulink>: | 170 | <ulink url='&YOCTO_DOCS_GS_URL;'>Yocto Project Overview Manual</ulink>: |
171 | </emphasis> | 171 | </emphasis> |
172 | This manual introduces the Yocto Project, provides development | 172 | This manual introduces the Yocto Project, provides development |
173 | environment basics, and explains Yocto Project concepts. | 173 | environment basics, and explains Yocto Project concepts. |
diff --git a/documentation/sdk-manual/sdk-appendix-obtain.xml b/documentation/sdk-manual/sdk-appendix-obtain.xml index d2da5924c2..d35cc0a3c9 100644 --- a/documentation/sdk-manual/sdk-appendix-obtain.xml +++ b/documentation/sdk-manual/sdk-appendix-obtain.xml | |||
@@ -327,7 +327,7 @@ | |||
327 | <para>Following is an example command that extracts the root | 327 | <para>Following is an example command that extracts the root |
328 | filesystem from a previously built root filesystem image that | 328 | filesystem from a previously built root filesystem image that |
329 | was downloaded from the | 329 | was downloaded from the |
330 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#index-downloads'>Index of Releases</ulink>. | 330 | <ulink url='&YOCTO_DOCS_GS_URL;#index-downloads'>Index of Releases</ulink>. |
331 | This command extracts the root filesystem into the | 331 | This command extracts the root filesystem into the |
332 | <filename>core2-64-sato</filename> directory: | 332 | <filename>core2-64-sato</filename> directory: |
333 | <literallayout class='monospaced'> | 333 | <literallayout class='monospaced'> |
diff --git a/documentation/sdk-manual/sdk-extensible.xml b/documentation/sdk-manual/sdk-extensible.xml index ac6fa367ba..6c4e5c2233 100644 --- a/documentation/sdk-manual/sdk-extensible.xml +++ b/documentation/sdk-manual/sdk-extensible.xml | |||
@@ -247,7 +247,7 @@ | |||
247 | <para> | 247 | <para> |
248 | The <filename>devtool</filename> command line is organized | 248 | The <filename>devtool</filename> command line is organized |
249 | similarly to | 249 | similarly to |
250 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink> in that it | 250 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink> in that it |
251 | has a number of sub-commands for each function. | 251 | has a number of sub-commands for each function. |
252 | You can run <filename>devtool --help</filename> to see all the | 252 | You can run <filename>devtool --help</filename> to see all the |
253 | commands. | 253 | commands. |
diff --git a/documentation/tools/mega-manual.sed b/documentation/tools/mega-manual.sed index 3f95569642..a34ff97d5e 100644 --- a/documentation/tools/mega-manual.sed +++ b/documentation/tools/mega-manual.sed | |||
@@ -16,7 +16,7 @@ s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/poky-ref-manual\/po | |||
16 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/sdk-manual\/sdk-manual.html#/\"link\" href=\"#/g | 16 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/sdk-manual\/sdk-manual.html#/\"link\" href=\"#/g |
17 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/bsp-guide\/bsp-guide.html#/\"link\" href=\"#/g | 17 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/bsp-guide\/bsp-guide.html#/\"link\" href=\"#/g |
18 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/dev-manual\/dev-manual.html#/\"link\" href=\"#/g | 18 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/dev-manual\/dev-manual.html#/\"link\" href=\"#/g |
19 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/overview-manual\/overview-manual.html#/\"link\" href=\"#/g | 19 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/getting-started\/getting-started.html#/\"link\" href=\"#/g |
20 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/kernel-dev\/kernel-dev.html#/\"link\" href=\"#/g | 20 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/kernel-dev\/kernel-dev.html#/\"link\" href=\"#/g |
21 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/profile-manual\/profile-manual.html#/\"link\" href=\"#/g | 21 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/profile-manual\/profile-manual.html#/\"link\" href=\"#/g |
22 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/ref-manual\/ref-manual.html#/\"link\" href=\"#/g | 22 | s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/ref-manual\/ref-manual.html#/\"link\" href=\"#/g |
@@ -25,7 +25,7 @@ s/\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/toaster-manual\/toa | |||
25 | # Process cases where just an external manual is referenced without an id anchor | 25 | # Process cases where just an external manual is referenced without an id anchor |
26 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/yocto-project-qs\/yocto-project-qs.html\" target=\"_top\">Yocto Project Quick Start<\/a>/Yocto Project Quick Start/g | 26 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/yocto-project-qs\/yocto-project-qs.html\" target=\"_top\">Yocto Project Quick Start<\/a>/Yocto Project Quick Start/g |
27 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/dev-manual\/dev-manual.html\" target=\"_top\">Yocto Project Development Tasks Manual<\/a>/Yocto Project Development Tasks Manual/g | 27 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/dev-manual\/dev-manual.html\" target=\"_top\">Yocto Project Development Tasks Manual<\/a>/Yocto Project Development Tasks Manual/g |
28 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/overview-manual\/overview-manual.html\" target=\"_top\">Yocto Project Overview Manual<\/a>/Yocto Project Overview Manual/g | 28 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/getting-started\/getting-started.html\" target=\"_top\">Yocto Project Overview Manual<\/a>/Yocto Project Overview Manual/g |
29 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/sdk-manual\/sdk-manual.html\" target=\"_top\">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)<\/a>/Yocto Project Application Development and the Extensible Software Development Kit (eSDK)/g | 29 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/sdk-manual\/sdk-manual.html\" target=\"_top\">Yocto Project Application Development and the Extensible Software Development Kit (eSDK)<\/a>/Yocto Project Application Development and the Extensible Software Development Kit (eSDK)/g |
30 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/bsp-guide\/bsp-guide.html\" target=\"_top\">Yocto Project Board Support Package (BSP) Developer's Guide<\/a>/Yocto Project Board Support Package (BSP) Developer's Guide/g | 30 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/bsp-guide\/bsp-guide.html\" target=\"_top\">Yocto Project Board Support Package (BSP) Developer's Guide<\/a>/Yocto Project Board Support Package (BSP) Developer's Guide/g |
31 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/profile-manual\/profile-manual.html\" target=\"_top\">Yocto Project Profiling and Tracing Manual<\/a>/Yocto Project Profiling and Tracing Manual/g | 31 | s/<a class=\"ulink\" href=\"http:\/\/www.yoctoproject.org\/docs\/2.5\/profile-manual\/profile-manual.html\" target=\"_top\">Yocto Project Profiling and Tracing Manual<\/a>/Yocto Project Profiling and Tracing Manual/g |
diff --git a/documentation/yocto-project-qs/qs.xml b/documentation/yocto-project-qs/qs.xml index 3989fa06ca..bd5941f03e 100644 --- a/documentation/yocto-project-qs/qs.xml +++ b/documentation/yocto-project-qs/qs.xml | |||
@@ -48,7 +48,7 @@ | |||
48 | <listitem><para> | 48 | <listitem><para> |
49 | For more introductory and conceptual information on the | 49 | For more introductory and conceptual information on the |
50 | Yocto Project, see the | 50 | Yocto Project, see the |
51 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;'>Yocto Project Overview Manual</ulink>. | 51 | <ulink url='&YOCTO_DOCS_GS_URL;'>Yocto Project Overview Manual</ulink>. |
52 | </para></listitem> | 52 | </para></listitem> |
53 | <listitem><para> | 53 | <listitem><para> |
54 | For guidance on where to look for information beyond | 54 | For guidance on where to look for information beyond |
@@ -308,7 +308,7 @@ | |||
308 | (CROPS), you need to get a copy of the Yocto Project. | 308 | (CROPS), you need to get a copy of the Yocto Project. |
309 | It is recommended that you get the latest Yocto Project release | 309 | It is recommended that you get the latest Yocto Project release |
310 | by setting up (cloning in | 310 | by setting up (cloning in |
311 | <ulink url='&YOCTO_DOCS_OVERVIEW_URL;#git'>Git</ulink> | 311 | <ulink url='&YOCTO_DOCS_GS_URL;#git'>Git</ulink> |
312 | terms) a local copy of the <filename>poky</filename> Git | 312 | terms) a local copy of the <filename>poky</filename> Git |
313 | repository on your build host and then checking out the | 313 | repository on your build host and then checking out the |
314 | latest release. | 314 | latest release. |
@@ -603,7 +603,7 @@ | |||
603 | </note> | 603 | </note> |
604 | For information on using the | 604 | For information on using the |
605 | <filename>bitbake</filename> command, see the | 605 | <filename>bitbake</filename> command, see the |
606 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#usingpoky-components-bitbake'>BitBake</ulink>" | 606 | "<ulink url='&YOCTO_DOCS_GS_URL;#usingpoky-components-bitbake'>BitBake</ulink>" |
607 | section in the Yocto Project Overview Manual, or | 607 | section in the Yocto Project Overview Manual, or |
608 | see the | 608 | see the |
609 | "<ulink url='&YOCTO_DOCS_BB_URL;#bitbake-user-manual-command'>BitBake Command</ulink>" | 609 | "<ulink url='&YOCTO_DOCS_BB_URL;#bitbake-user-manual-command'>BitBake Command</ulink>" |
@@ -1078,7 +1078,7 @@ | |||
1078 | used by the OpenEmbedded build system during the image | 1078 | used by the OpenEmbedded build system during the image |
1079 | generation process. | 1079 | generation process. |
1080 | For information on Fakeroot and Pseudo, see the | 1080 | For information on Fakeroot and Pseudo, see the |
1081 | "<ulink url='&YOCTO_DOCS_OVERVIEW_URL;#fakeroot-and-pseudo'>Fakeroot and Pseudo</ulink>" | 1081 | "<ulink url='&YOCTO_DOCS_GS_URL;#fakeroot-and-pseudo'>Fakeroot and Pseudo</ulink>" |
1082 | section in the Yocto Project Overview Manual. | 1082 | section in the Yocto Project Overview Manual. |
1083 | </para></listitem> | 1083 | </para></listitem> |
1084 | <listitem><para role='writernotes'> | 1084 | <listitem><para role='writernotes'> |