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-rw-r--r--documentation/ref-manual/ref-variables.xml17
1 files changed, 17 insertions, 0 deletions
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 2507d4b520..8ff0d671d1 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -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>