ref-manual: Added pixbufcache class and PIXBUF_PACKAGES variable.

(From yocto-docs rev: ed3ab4984b57608a7922e55c4d87401f9795352f)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 2e6a17f255..615adb96cb 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1369,6 +1369,30 @@
     </para>
 </section>
 
+<section id='ref-classes-pixbufcache'>
+    <title><filename>pixbufcache.bbclass</filename></title>
+
+    <para>
+        The <filename>pixbufcache</filename> class generates the proper
+        post-install and post-remove (postinst/postrm) scriptlets for packages
+        that install pixbuf loaders, which are used with
+        <filename>gdk-pixbuf</filename>.
+        These scriptlets call <filename>update_pixbuf_cache</filename>
+        to add the input method modules to the cache.
+        Since the cache files are architecture-specific,
+        <filename>update_pixbuf_cache</filename> is run using QEMU if the
+        postinst scriptlets need to be run on the build host during image
+        creation.
+    </para>
+
+    <para>
+        If the pixbuf loaders modules being installed are in packages other
+        than the main package, set
+        <link linkend='var-PIXBUF_PACKAGES'><filename>PIXBUF_PACKAGES</filename></link>
+        to include the packages containing the modules.
+    </para>
+</section>
+
 <section id='ref-classes-perl'>
     <title>Perl Modules - <filename>cpan.bbclass</filename></title>