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ref-manual: Added note to PROVIDES variable description. 

Fixes [YOCTO #10069]

Added a note at the end of the variable description to
explain how runtime virual dependencies work.

(From yocto-docs rev: de1d16017c27b6b2502735fc41acd22660f6e7b9)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark 2016-08-03 09:50:06 -07:00 committed by Richard Purdie
parent b88973f637
commit 836b80cca2
1 changed files with 17 additions and 0 deletions
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documentation/ref-manual/ref-variables.xml
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@ -10042,6 +10042,23 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
<link linkend='var-PREFERRED_PROVIDER'><filename>PREFERRED_PROVIDER</filename></link>
variable is used to select which particular recipe
provides a virtual target.
<note>
<para>A corresponding mechanism for virtual runtime
dependencies (packages) exists.
However, the mechanism does not depend on any special
functionality beyond ordinary variable assignments.
For example,
<filename>VIRTUAL-RUNTIME_dev_manager</filename>
refers to the package of the component that manages
the <filename>/dev</filename> directory.</para>
<para>Setting the "preferred provider" for runtime
dependencies is as simple as using the following
assignment in a configuration file:</para>
<literallayout class='monospaced'>
VIRTUAL-RUNTIME_dev_manager = "udev"
</literallayout>
</note>
</para>
</glossdef>
</glossentry>