[gnome-continuous-yocto/gnomeostree-3.28-rocko: 2436/8267] classes/gtk-doc: lazy assign GTKDOC_ENABLED

[Emmanuele Bassi <ebassi src gnome org>]

commit fc9ddc2459f59f24154a50a7a1aa8461466a6c90
Author: Ross Burton <ross burton intel com>
Date:   Mon Sep 12 12:46:26 2016 +0100

    classes/gtk-doc: lazy assign GTKDOC_ENABLED
    
    By letting a recipe assign GTKDOC_ENABLED trivially there is a simple and clear
    way to disable gtk-doc for specific build configurations.
    
    (From OE-Core rev: 201e069625e3623ff71864f969664c6d5d3b1801)
    
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/classes/gtk-doc.bbclass |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meta/classes/gtk-doc.bbclass b/meta/classes/gtk-doc.bbclass
index b2b6239..297eac6 100644
--- a/meta/classes/gtk-doc.bbclass
+++ b/meta/classes/gtk-doc.bbclass
@@ -7,7 +7,7 @@
 #
 # It should be used in recipes to determine whether gtk-doc based documentation should be built,
 # so that qemu use can be avoided when necessary.
-GTKDOC_ENABLED = "${@bb.utils.contains('DISTRO_FEATURES', 'api-documentation', \
+GTKDOC_ENABLED ?= "${@bb.utils.contains('DISTRO_FEATURES', 'api-documentation', \
                       bb.utils.contains('MACHINE_FEATURES', 'qemu-usermode', 'True', 'False', d), 'False', 
d)}"
 
 EXTRA_OECONF_prepend_class-target = "${@bb.utils.contains('GTKDOC_ENABLED', 'True', '--enable-gtk-doc 
--enable-gtk-doc-html --disable-gtk-doc-pdf', \