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-rw-r--r--documentation/ref-manual/ref-variables.xml9
1 files changed, 9 insertions, 0 deletions
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index ad87a633126..45015a40960 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -9589,6 +9589,15 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
PREFERRED_VERSION_python = "2.7.3"
PREFERRED_VERSION_linux-yocto = "3.19%"
</literallayout>
+ If you want to force a particular version of a recipe,
+ you can use "forcevariable" as follows:
+ <literallayout class='monospaced'>
+ PREFERRED_VERSION_linux-yocto_forcevariable = "3.4%"
+ </literallayout>
+ Another method is to use a machine override:
+ <literallayout class='monospaced'>
+ PREFERRED_VERSION_linux-yocto_qemux86 = "3.4%"
+ </literallayout>
</para>
</glossdef>
</glossentry>