diff options
Diffstat (limited to 'documentation/kernel-dev')
-rw-r--r-- | documentation/kernel-dev/kernel-dev-common.xml | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/documentation/kernel-dev/kernel-dev-common.xml b/documentation/kernel-dev/kernel-dev-common.xml index a152f9fbbe..f73f981ce8 100644 --- a/documentation/kernel-dev/kernel-dev-common.xml +++ b/documentation/kernel-dev/kernel-dev-common.xml | |||
@@ -342,32 +342,25 @@ | |||
342 | <literallayout class='monospaced'> | 342 | <literallayout class='monospaced'> |
343 | $ bitbake linux-yocto -c kernel_configme -f | 343 | $ bitbake linux-yocto -c kernel_configme -f |
344 | </literallayout></para></listitem> | 344 | </literallayout></para></listitem> |
345 | <listitem><para>Copy and rename the resulting | ||
346 | <filename>.config</filename> file (e.g. | ||
347 | <filename>config.orig</filename>). | ||
348 | </para></listitem> | ||
349 | <listitem><para>Run the <filename>menuconfig</filename> | 345 | <listitem><para>Run the <filename>menuconfig</filename> |
350 | command: | 346 | command: |
351 | <literallayout class='monospaced'> | 347 | <literallayout class='monospaced'> |
352 | $ bitbake linux-yocto -c menuconfig | 348 | $ bitbake linux-yocto -c menuconfig |
353 | </literallayout></para></listitem> | 349 | </literallayout></para></listitem> |
354 | <listitem><para>Prepare a configuration fragment based on | 350 | <listitem><para>Run the <filename>diffconfig</filename> |
355 | the differences between the two files. | 351 | command to prepare a configuration fragment. |
356 | </para></listitem> | 352 | The resulting file <filename>fragment.cfg</filename> |
353 | will be placed in the | ||
354 | <filename>${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-WORKDIR'><filename>WORKDIR</filename></ulink><filename>}</filename> directory: | ||
355 | <literallayout class='monospaced'> | ||
356 | $ bitbake linux-yocto -c diffconfig | ||
357 | </literallayout></para></listitem> | ||
357 | </orderedlist> | 358 | </orderedlist> |
358 | </para> | 359 | </para> |
359 | 360 | ||
360 | <para> | 361 | <para> |
361 | Ultimately, the configuration fragment file needs to be a | 362 | The <filename>diffconfig</filename> command creates a file that is a |
362 | list of Linux kernel <filename>CONFIG_</filename> assignments. | 363 | list of Linux kernel <filename>CONFIG_</filename> assignments. |
363 | It cannot be in <filename>diff</filename> format. | ||
364 | Here is an example of a command that creates your | ||
365 | configuration fragment file. | ||
366 | Regardless of the exact command you use, plan on reviewing | ||
367 | the output as you can usually remove some of the defaults: | ||
368 | <literallayout class='monospaced'> | ||
369 | $ diff -Nurp config.orig .config | sed -n "s/^\+//p" > frag.cfg | ||
370 | </literallayout> | ||
371 | See the "<link linkend='changing-the-configuration'>Changing the Configuration</link>" | 364 | See the "<link linkend='changing-the-configuration'>Changing the Configuration</link>" |
372 | section for information on how to use the output as a | 365 | section for information on how to use the output as a |
373 | configuration fragment. | 366 | configuration fragment. |