diff options
-rw-r--r-- | documentation/ref-manual/usingpoky.xml | 66 |
1 files changed, 40 insertions, 26 deletions
diff --git a/documentation/ref-manual/usingpoky.xml b/documentation/ref-manual/usingpoky.xml index ecc2ea3653..15e1d47301 100644 --- a/documentation/ref-manual/usingpoky.xml +++ b/documentation/ref-manual/usingpoky.xml | |||
@@ -253,7 +253,8 @@ | |||
253 | <para> | 253 | <para> |
254 | Sometimes it can be hard to see why BitBake wants to build other | 254 | Sometimes it can be hard to see why BitBake wants to build other |
255 | recipes before the one you have specified. | 255 | recipes before the one you have specified. |
256 | Dependency information can help you understand recipe build order. | 256 | Dependency information can help you understand why a recipe is |
257 | built. | ||
257 | </para> | 258 | </para> |
258 | 259 | ||
259 | <para> | 260 | <para> |
@@ -293,32 +294,45 @@ | |||
293 | <para> | 294 | <para> |
294 | The graphs are in | 295 | The graphs are in |
295 | <ulink url='https://en.wikipedia.org/wiki/DOT_%28graph_description_language%29'>DOT</ulink> | 296 | <ulink url='https://en.wikipedia.org/wiki/DOT_%28graph_description_language%29'>DOT</ulink> |
296 | format and can be converted to images (e.g. using the "dot" tool | 297 | format and can be converted to images (e.g. using the |
297 | from | 298 | <filename>dot</filename> tool from |
298 | <ulink url='http://www.graphviz.org/'>Graphviz</ulink>. | 299 | <ulink url='http://www.graphviz.org/'>Graphviz</ulink>). |
299 | <note> | 300 | <note><title>Notes</title> |
300 | <para>DOT files use a plain text format. | 301 | <itemizedlist> |
301 | The graphs generated using the | 302 | <listitem><para> |
302 | <filename>bitbake -g</filename> command are often so large as | 303 | DOT files use a plain text format. |
303 | to be impossible to read without special pruning (e.g. with | 304 | The graphs generated using the |
304 | Bitbake's <filename>-I</filename> option) and processing. | 305 | <filename>bitbake -g</filename> command are often so |
305 | Despite the form and size of the files, the corresponding | 306 | large as to be difficult to read without special |
306 | <filename>.dot</filename> files can still be easy to read | 307 | pruning (e.g. with Bitbake's |
307 | and provide useful information.</para> | 308 | <filename>-I</filename> option) and processing. |
308 | 309 | Despite the form and size of the graphs, the | |
309 | <para>As an example, the | 310 | corresponding <filename>.dot</filename> files can still |
310 | <filename>task-depends.dot</filename> file contains lines such | 311 | be possible to read and provide useful information. |
311 | as the following: | 312 | </para> |
312 | <literallayout class='monospaced'> | 313 | |
314 | <para>As an example, the | ||
315 | <filename>task-depends.dot</filename> file contains | ||
316 | lines such as the following: | ||
317 | <literallayout class='monospaced'> | ||
313 | "libxslt.do_configure" -> "libxml2.do_populate_sysroot" | 318 | "libxslt.do_configure" -> "libxml2.do_populate_sysroot" |
314 | </literallayout> | 319 | </literallayout> |
315 | The above example line reveals that the | 320 | The above example line reveals that the |
316 | <link linkend='ref-tasks-configure'><filename>do_configure</filename></link> | 321 | <link linkend='ref-tasks-configure'><filename>do_configure</filename></link> |
317 | task in <filename>libxslt</filename> depends on the | 322 | task in <filename>libxslt</filename> depends on the |
318 | <link linkend='ref-tasks-populate_sysroot'><filename>do_populate_sysroot</filename></link> | 323 | <link linkend='ref-tasks-populate_sysroot'><filename>do_populate_sysroot</filename></link> |
319 | task in <filename>libxml2</filename>, which is a normal | 324 | task in <filename>libxml2</filename>, which is a normal |
320 | <link linkend='var-DEPENDS'><filename>DEPENDS</filename></link> | 325 | <link linkend='var-DEPENDS'><filename>DEPENDS</filename></link> |
321 | dependency between the two recipes.</para> | 326 | dependency between the two recipes. |
327 | </para></listitem> | ||
328 | <listitem><para> | ||
329 | For an example of how <filename>.dot</filename> files | ||
330 | can be processed, see the | ||
331 | <filename>scripts/contrib/graph-tool</filename> Python | ||
332 | script, which finds and displays paths between graph | ||
333 | nodes. | ||
334 | </para></listitem> | ||
335 | </itemizedlist> | ||
322 | </note> | 336 | </note> |
323 | </para> | 337 | </para> |
324 | 338 | ||