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ref-manual: Rewrite of the CLASSOVERRIDE variable in the glossary 

Fixes [YOCTO #10174]

I applied a more descriptive explanation of this varialbe.

(From yocto-docs rev: 7c6c2645b7e74e1c7de0d43b35307c8917648959)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark 2016-09-01 11:35:36 -07:00 committed by Richard Purdie
parent 43b9962cdd
commit 44b0b07a6f
1 changed files with 22 additions and 9 deletions
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31
documentation/ref-manual/ref-variables.xml
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@ -1992,22 +1992,35 @@
An internal variable specifying the special class override An internal variable specifying the special class override
that should currently apply (e.g. "class-target", that should currently apply (e.g. "class-target",
"class-native", and so forth). "class-native", and so forth).
The classes that use this variable set it to The classes that use this variable (e.g.
appropriate values. <link linkend='ref-classes-native'><filename>native</filename></link>,
<link linkend='ref-classes-nativesdk'><filename>nativesdk</filename></link>,
and so forth) set the variable to appropriate values.
<note>
<filename>CLASSOVERRIDE</filename> gets its default
"class-target" value from the
<filename>bitbake.conf</filename> file.
</note>
</para> </para>
<para> <para>
You do not normally directly interact with this variable. As an example, the following override allows you to install
The value for the <filename>CLASSOVERRIDE</filename> extra files, but only when building for the target:
variable goes into <literallayout class='monospaced'>
<link linkend='var-OVERRIDES'><filename>OVERRIDES</filename></link> do_install_append_class-target() {
and then can be used as an override. install my-extra-file ${D}${sysconfdir}
}
</literallayout>
Here is an example where "python-native" is added to Here is an example where "python-native" is added to
<link linkend='var-DEPENDS'><filename>DEPENDS</filename></link> <link linkend='var-DEPENDS'><filename>DEPENDS</filename></link>,
only when building for the <filename>-native</filename> case: but only when building for the build host:
<literallayout class='monospaced'> <literallayout class='monospaced'>
DEPENDS_append_class-native = " python-native" DEPENDS_append_class-native = " python-native"
</literallayout> </literallayout>
The underlying mechanism behind
<filename>CLASSOVERRIDE</filename> is simply that it is
included in the default value of
<link linkend='var-OVERRIDES'><filename>OVERRIDES</filename></link>.
</para> </para>
</glossdef> </glossdef>
</glossentry> </glossentry>