upstream: https://bugs.freedesktop.org/show_bug.cgi?id=22131

Index: xorg-server-1.5.1/hw/xfree86/os-support/linux/Makefile.am
===================================================================
--- xorg-server-1.5.1.orig/hw/xfree86/os-support/linux/Makefile.am	2008-09-23 19:24:59.000000000 +0100
+++ xorg-server-1.5.1/hw/xfree86/os-support/linux/Makefile.am	2008-10-27 13:27:40.000000000 +0000
@@ -40,7 +40,7 @@
 
 AM_CFLAGS = -DUSESTDRES -DHAVE_SYSV_IPC $(DIX_CFLAGS) $(XORG_CFLAGS) $(PLATFORM_DEFINES)
 
-INCLUDES = $(XORG_INCS) $(PLATFORM_INCLUDES) -I/usr/include/drm # FIXME this last part is crack
+INCLUDES = $(XORG_INCS) $(PLATFORM_INCLUDES) $(LIBDRM_CFLAGS)
 
 # FIXME: These need to be added to the build
 LNX_EXTRA_SRCS = \