[PATCH 2/7] gtk+3: Fix cross builds with wayland-protocols

[Khem Raj <raj.khem@gmail.com>]

Fixes
| make[4]: Entering directory '/home/jenkins/oe/world/oe-build/build/tmpfs/work/armv5te-bec-linux-gnueabi/gtk+3/3.22.30-r0/build/gdk/wayland'
| make[4]: *** No rule to make target 'pointer-gestures-unstable-v1-client-protocol.h', needed by 'all'.  Stop.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 ...R-for-defining-WAYLAND_PROTOCOLS_DAT.patch | 31 +++++++++++++++++++
 meta/recipes-gnome/gtk+/gtk+3_3.22.30.bb      |  5 ++-
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-gnome/gtk+/gtk+3/0001-use-PKG_CHECK_VAR-for-defining-WAYLAND_PROTOCOLS_DAT.patch

diff --git a/meta/recipes-gnome/gtk+/gtk+3/0001-use-PKG_CHECK_VAR-for-defining-WAYLAND_PROTOCOLS_DAT.patch b/meta/recipes-gnome/gtk+/gtk+3/0001-use-PKG_CHECK_VAR-for-defining-WAYLAND_PROTOCOLS_DAT.patch
new file mode 100644
index 0000000000..3948bdd4e2
--- /dev/null
+++ b/meta/recipes-gnome/gtk+/gtk+3/0001-use-PKG_CHECK_VAR-for-defining-WAYLAND_PROTOCOLS_DAT.patch
@@ -0,0 +1,31 @@
+From 3bbc4ea83256df8a777e13533e8d2791a70c0ee9 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 20 Jul 2018 22:32:37 -0700
+Subject: [PATCH] use PKG_CHECK_VAR for defining WAYLAND_PROTOCOLS_DATADIR
+
+This allows to override the wayland-protocols pkgdatadir with the
+WAYLAND_PROTOCOLS_DATADIR from environment.
+
+pkgconfig would return an absolute path in /usr/share/wayland-protocols
+for the pkgdatadir value, which is not suitable for cross-compiling.
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ configure.ac | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index 7ca7b99..847fa4b 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -470,7 +470,8 @@ fi
+ if test "$enable_wayland_backend" = "yes"; then
+   # For the cairo image backend
+   cairo_backends="$cairo_backends cairo"
+-  AC_SUBST(WAYLAND_PROTOCOLS_DATADIR, `$PKG_CONFIG --variable=pkgdatadir wayland-protocols`)
++  PKG_CHECK_VAR([WAYLAND_PROTOCOLS_DATADIR], [wayland-protocols >= $WAYLAND_PROTOCOLS_REQUIRED], pkgdatadir)
++  AC_SUBST([WAYLAND_PROTOCOLS_DATADIR])
+   GDK_BACKENDS="$GDK_BACKENDS wayland"
+   GDK_WINDOWING="$GDK_WINDOWING
+ #define GDK_WINDOWING_WAYLAND"
diff --git a/meta/recipes-gnome/gtk+/gtk+3_3.22.30.bb b/meta/recipes-gnome/gtk+/gtk+3_3.22.30.bb
index 697b518544..d1625478ae 100644
--- a/meta/recipes-gnome/gtk+/gtk+3_3.22.30.bb
+++ b/meta/recipes-gnome/gtk+/gtk+3_3.22.30.bb
@@ -6,7 +6,8 @@ SRC_URI = "http://ftp.gnome.org/pub/gnome/sources/gtk+/${MAJ_VER}/gtk+-${PV}.tar
            file://0001-Hardcoded-libtool.patch \
            file://0002-Do-not-try-to-initialize-GL-without-libGL.patch \
            file://0003-Add-disable-opengl-configure-option.patch \
-          "
+           file://0001-use-PKG_CHECK_VAR-for-defining-WAYLAND_PROTOCOLS_DAT.patch \
+           "
 SRC_URI[md5sum] = "61e60dc073e0a6893c72043d20579dc0"
 SRC_URI[sha256sum] = "a1a4a5c12703d4e1ccda28333b87ff462741dc365131fbc94c218ae81d9a6567"
 
@@ -16,3 +17,5 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=5f30f0716dfdd0d91eb439ebec522ec2 \
                     file://gtk/gtk.h;endline=25;md5=1d8dc0fccdbfa26287a271dce88af737 \
                     file://gdk/gdk.h;endline=25;md5=c920ce39dc88c6f06d3e7c50e08086f2 \
                     file://tests/testgtk.c;endline=25;md5=cb732daee1d82af7a2bf953cf3cf26f1"
+
+EXTRA_OEMAKE += "WAYLAND_PROTOCOLS_DATADIR=${STAGING_DATADIR}/wayland-protocols"
-- 
2.18.0