build: fix for Wayland headers not in standard include dirs.

Fix build when Wayland headers don't live in plain system include dirs
like /usr/include but rather in /usr/include/wayland for instance.

Original patch written by Dominique Leuenberger <dimstar@opensuse.org>

https://bugzilla.gnome.org/show_bug.cgi?id=712282

diff --git a/gst/vaapi/Makefile.am b/gst/vaapi/Makefile.am
index cb98993..99c2fac 100644 (file)
--- a/gst/vaapi/Makefile.am
+++ b/gst/vaapi/Makefile.am
@@ -25,6 +25,10 @@ libgstvaapi_LIBS += \
 endif
 
 if USE_WAYLAND
+libgstvaapi_CFLAGS += \
+       $(WAYLAND_CFLAGS)       \
+       $(NULL)
+
 libgstvaapi_LIBS += \
        $(top_builddir)/gst-libs/gst/vaapi/libgstvaapi-wayland-$(GST_API_VERSION).la
 endif