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ref-manual: Updated the PREFERRED_VERSION variable description. 

Fixes [YOCTO #8595]

Applied some wording changes as part of the review process from
Richard Purdie.

(From yocto-docs rev: 3c4fc3cbdecb7e3c8287a915b82bc5469288d5db)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark 2016-04-04 13:35:40 -07:00 committed by Richard Purdie
parent 53bade8948
commit d57fe7c98c
1 changed files with 14 additions and 6 deletions
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documentation/ref-manual/ref-variables.xml
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@ -9592,15 +9592,23 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
PREFERRED_VERSION_python = "2.7.3" PREFERRED_VERSION_python = "2.7.3"
PREFERRED_VERSION_linux-yocto = "3.19%" PREFERRED_VERSION_linux-yocto = "3.19%"
</literallayout> </literallayout>
If you want to force a particular version of a recipe, Sometimes the <filename>PREFERRED_VERSION</filename>
you can use "forcevariable" as follows: variable can be set by configuration files in a way that
<literallayout class='monospaced'> is hard to change.
PREFERRED_VERSION_linux-yocto_forcevariable = "3.4%" You can use
</literallayout> <link linkend='var-OVERRIDES'><filename>OVERRIDES</filename></link>
Another method is to use a machine override: to set a machine-specific override.
Here is an example:
<literallayout class='monospaced'> <literallayout class='monospaced'>
PREFERRED_VERSION_linux-yocto_qemux86 = "3.4%" PREFERRED_VERSION_linux-yocto_qemux86 = "3.4%"
</literallayout> </literallayout>
Although not recommended, worst case, you can also use the
"forcevariable" override, which is the strongest override
possible.
Here is an example:
<literallayout class='monospaced'>
PREFERRED_VERSION_linux-yocto_forcevariable = "3.4%"
</literallayout>
</para> </para>
</glossdef> </glossdef>
</glossentry> </glossentry>