gtk+3: sort resources for reproducible binaries

The list of resources is gathered with $(wildcard) in Make, which isn't
sorted. If this order changes then the generated libraries will differ.

(From OE-Core rev: f3675be6be29426688187a135221431a0941d007)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-gnome/gtk+/gtk+3/sort-resources.patch

@@ -0,0 +1,19 @@
+If the resources file isn't sorted in some way then libgdk.so will differ
+depending on the inode order of the resource files.
+
+Upstream-Status: Pending
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+diff --git a/gdk/Makefile.am b/gdk/Makefile.am
+index e25b57ba50..26f2d57c6e 100644
+--- a/gdk/Makefile.am
++++ b/gdk/Makefile.am
+@@ -465,7 +465,7 @@ stamp-gc-h: $(top_builddir)/config.status
+ # Resources
+ #
+ 
+-glsl_sources := $(wildcard $(srcdir)/resources/glsl/*.glsl)
++glsl_sources := $(sort $(wildcard $(srcdir)/resources/glsl/*.glsl))
+ 
+ gdk.gresource.xml: Makefile.am
+ 	$(AM_V_GEN) echo "<?xml version='1.0' encoding='UTF-8'?>" > $@; \

meta/recipes-gnome/gtk+/gtk+3_3.24.13.bb

@@ -7,6 +7,7 @@ SRC_URI = "http://ftp.gnome.org/pub/gnome/sources/gtk+/${MAJ_VER}/gtk+-${PV}.tar
            file://0002-Do-not-try-to-initialize-GL-without-libGL.patch \
            file://0003-Add-disable-opengl-configure-option.patch \
            file://link_fribidi.patch \
+           file://sort-resources.patch \
           "
 SRC_URI[md5sum] = "f65515e7bfa2199bd2188e871d69c686"
 SRC_URI[sha256sum] = "4c775c38cf1e3c534ef0ca52ca6c7a890fe169981af66141c713e054e68930a9"