xserver-xorg: Depend on userland when vc4graphics is disabled

This helps in getting right headers, we have made a choice to let
userland provide KHR/khrplatform.h when using it instead of mesa-gl
which could have been another provider, xserver-xorg's glx
implementation depends on virtual/libgl which in case of rpi-without-vc4
driver is provided by mesa-gl, as a result, compilation fails since no
one is providing this header in this case.

Fixes errors like
usr/include/GL/glext.h:56:10: fatal error: KHR/khrplatform.h: No such file or directory
|    56 | #include <KHR/khrplatform.h>
|       |          ^~~~~~~~~~~~~~~~~~~

Fixes issue #391

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/recipes-graphics/xorg-xserver/xserver-xorg_%.bbappend b/recipes-graphics/xorg-xserver/xserver-xorg_%.bbappend
index fba1632..9574fa5 100644
--- a/recipes-graphics/xorg-xserver/xserver-xorg_%.bbappend
+++ b/recipes-graphics/xorg-xserver/xserver-xorg_%.bbappend
@@ -1 +1,5 @@
 OPENGL_PKGCONFIGS_rpi = "dri glx ${@bb.utils.contains('MACHINE_FEATURES', 'vc4graphics', 'dri3 xshmfence glamor', '', d)}"
+
+# when using userland graphic KHR/khrplatform.h is provided by userland but virtual/libgl is provided by mesa-gl where
+# we explicitly delete KHR/khrplatform.h since its already coming from userland package
+DEPENDS_append_rpi = " ${@bb.utils.contains('MACHINE_FEATURES', 'vc4graphics', '', 'userland', d)}"