--- configure.ac.orig	2013-08-04 05:26:18.000000000 -0400
+++ configure.ac	2013-08-14 16:10:57.781250000 -0400
@@ -397,7 +397,11 @@
 AC_SEARCH_LIBS(clock_gettime, rt, [CLOCK_GETTIME_LIBS=$LIBS])
 AC_SUBST(CLOCK_GETTIME_LIBS)
 
-sdkdir=`$PKG_CONFIG --variable=sdkdir xorg-server`
+AC_ARG_WITH(xorg-sdk-dir,
+       AC_HELP_STRING([--with-xorg-sdk-dir=DIR],
+       [Default xorg sdk include directory [[default is taken from pkgconfig]]]),
+       [sdkdir="$withval"],
+       [sdkdir=$(pkg-config --variable=sdkdir xorg-server)])
 
 DRI1=no
 if test "x$enable_dri" != "xno" -a "x$KMS_ONLY" != "xyes"; then