bitbake: Provide LAYERDIR_RE for layer.conf

This variable is a regex-escaped version of LAYERDIR, for safer use in
BBFILE_PATTERN, so as to avoid issues with regex special characters in the
layer path.

[YOCTO #8402]

(Bitbake rev: 72900522778b6ff08b135bf8bb97dff3f1a20bd9)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml
index ae7e4cee8c..4d06ff950c 100644
--- a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml
+++ b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml
@@ -1636,6 +1636,17 @@
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-LAYERDIR_RE'><glossterm>LAYERDIR_RE</glossterm>
+            <glossdef>
+                <para>When used inside the <filename>layer.conf</filename> configuration
+                    file, this variable provides the path of the current layer,
+                    escaped for use in a regular expression
+                    (<link linkend='var-BBFILE_PATTERN'><filename>BBFILE_PATTERN</filename></link>).
+                    This variable is not available outside of <filename>layer.conf</filename>
+                    and references are expanded immediately when parsing of the file completes.</para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-LAYERVERSION'><glossterm>LAYERVERSION</glossterm>
             <glossdef>
                 <para>Optionally specifies the version of a layer as a single number.