diff options
| author |   Scott Rifenbark <srifenbark@gmail.com> | 2016-07-12 14:08:32 -0700 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2016-07-21 07:47:53 +0100 |
| commit | a6cffcffc17eb86ee8870ecec2d836d786dc3231 (patch) | |
| tree | c43704084dc7274b90fddab1615257534776ab17 /bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml | |
| parent | 8c55a9cf882eb7edd1ebfbcdfc66a330b401926a (diff) | |
| download | openembedded-core-contrib-a6cffcffc17eb86ee8870ecec2d836d786dc3231.tar.gz | |
bitbake: bitbake-user-manual: Added clarifying note to BBCLASSEXTEND variable.
Fixes [YOCTO #9909]
Added a note that talks about how the BBCLASSEXTEND mechanism
adds recipe variants.
(Bitbake rev: 185c9c5fc205fe9c9daf5238f11b92bd0954f5c6)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml')
| -rw-r--r-- | bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml index 4d06ff950c..e26422a421 100644 --- a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml +++ b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml @@ -986,6 +986,27 @@ BBCLASSEXTEND =+ "native nativesdk" BBCLASSEXTEND =+ "multilib:<replaceable>multilib_name</replaceable>" </literallayout> + <note> + <para> + Internally, the <filename>BBCLASSEXTEND</filename> + mechanism generates recipe variants by rewriting + variable values and applying overrides such as + <filename>_class-native</filename>. + For example, to generate a native version of a recipe + named "foo", a + <link linkend='var-DEPENDS'><filename>DEPENDS</filename></link> + on "foo" is rewritten to a <filename>DEPENDS</filename> + on "foo-native". + </para> + + <para> + No reparsing, which adds some limitations, of the + recipe is done for each variant. + For example, it is not possible to "include" a + different file depending on the variant, since + "include's" are processed when the recipe is parsed. + </para> + </note> </para> </glossdef> </glossentry> |