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| author |   Scott Rifenbark <srifenbark@gmail.com> | 2016-08-08 09:38:00 -0700 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2016-08-17 10:22:59 +0100 |
| commit | cbf8516c083ebf7fc4b1a3018702b78989f64f1f (patch) | |
| tree | d1b2ee3af14e69d3c8be7ce4742a71a847b32ec6 /bitbake | |
| parent | 277a5a969fd7a35c8e5d112861ba6a815c0af0ec (diff) | |
| download | openembedded-core-contrib-cbf8516c083ebf7fc4b1a3018702b78989f64f1f.tar.gz | |
bitbake: bitbake-user-manual: Added setting variable for a single task
Fixes [YOCTO #10095]
I added a third case to the "Conditional Metadata" section to
describe setting a variable for a single task.
(Bitbake rev: 24d648ce62b35f7d2b23fde732703c060579a0d2)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake')
| -rw-r--r-- | bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml index 4fa51c446d..3d9234cba6 100644 --- a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml +++ b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml @@ -557,6 +557,34 @@ KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc cfg/paravirt_kvm.scc" </literallayout> </para></listitem> + <listitem><para><emphasis>Setting a Variable for a Single Task:</emphasis> + BitBake supports setting a variable just for the + duration of a single task. + Here is an example: + <literallayout class='monospaced'> + FOO_task-configure = "val 1" + FOO_task-compile = "val 2" + </literallayout> + In the previous example, <filename>FOO</filename> + has the value "val 1" while the + <filename>do_configure</filename> task is executed, + and the value "val 2" while the + <filename>do_compile</filename> task is executed. + </para> + + <para>Internally, this is implemented by prepending + the task (e.g. "task-compile:") to the value of + <link linkend='var-OVERRIDES'><filename>OVERRIDES</filename></link> + for the local datastore of the <filename>do_compile</filename> + task.</para> + + <para>You can also use this syntax with other combinations + (e.g. "<filename>_prepend</filename>") as shown in the + following example: + <literallayout class='monospaced'> + EXTRA_OEMAKE_prepend_task-compile = "${PARALLEL_MAKE} " + </literallayout> + </para></listitem> </itemizedlist> </para> </section> |