--- clutter/cogl/cogl/Makefile.in.orig	2010-11-20 14:38:12.000000000 +0100
+++ clutter/cogl/cogl/Makefile.in	2010-11-20 14:47:42.000000000 +0100
@@ -582,6 +582,7 @@
 	-I$(srcdir)/winsys 			\
 	-I$(srcdir)/driver/$(COGL_DRIVER) 	\
 	-I$(top_builddir)/clutter/cogl          \
+	`pkg-config --cflags gl`		\
 	$(NULL)
 
 AM_CPPFLAGS = \