gtk+3: Do not try to initialize GL without libgl

Gdk initialization ends up calling epoxy GLX api, which calls exit()
if libGL.so.1 is not present. In practice this prevents all GTK+
applications from starting if GLX is not present.

If opengl and x11 distro features are set, make gtk+3 RDEPEND on libgl.
If opengl and x11 distro features are not set, use #ifdef to prevent
the GL initialization.

Remove libgl dependency from gtk3-demo: it can now run without
libgl (although trying to run the glarea demo will exit in that case).

[YOCTO #8529]

(From OE-Core rev: f9540f50ea661e260ec2b82436238cfb989e23c5)

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

1 files changed, 3 insertions, 1 deletions

diff --git a/meta/recipes-gnome/gtk+/gtk+3.inc b/meta/recipes-gnome/gtk+/gtk+3.inc
index 54f84fcbd2..22a40d8f05 100644
--- a/meta/recipes-gnome/gtk+/gtk+3.inc
+++ b/meta/recipes-gnome/gtk+/gtk+3.inc
@@ -32,9 +32,11 @@ EXTRA_OECONF += " \
 "
 
 PACKAGECONFIG ??= "${@bb.utils.contains("DISTRO_FEATURES", "x11", "x11", "", d)} \
+                   ${@bb.utils.contains("DISTRO_FEATURES", "opengl x11", "glx", "", d)} \
                    ${@bb.utils.contains("DISTRO_FEATURES", "wayland", "wayland", "", d)}"
 
 PACKAGECONFIG[x11] = "--enable-x11-backend,--disable-x11-backend,at-spi2-atk fontconfig libx11 libxext libxcursor libxi libxdamage libxrandr libxrender libxcomposite libxfixes"
+PACKAGECONFIG[glx] = "--enable-glx,--disable-glx,,libgl"
 PACKAGECONFIG[wayland] = "--enable-wayland-backend,--disable-wayland-backend,wayland libxkbcommon virtual/mesa"
 
 do_install_append() {
@@ -57,7 +59,7 @@ FILES_${PN}-demo = "${bindir}/gtk3-demo \
 
 # The demo uses PNG files and mime type sniffing, so ensure that these
 # dependencies are present.
-RDEPENDS_${PN}-demo += "gdk-pixbuf-loader-png shared-mime-info libgl"
+RDEPENDS_${PN}-demo += "gdk-pixbuf-loader-png shared-mime-info"
 
 FILES_${PN} = "${bindir}/gtk-update-icon-cache-3.0 \
                ${bindir}/gtk-query-immodules-3.0 \