--- xf86-video-tdfx-1.3.0/configure.ac.orig	2007-06-10 21:01:54.000000000 +0200
+++ xf86-video-tdfx-1.3.0/configure.ac	2007-06-10 21:02:06.000000000 +0200
@@ -67,13 +67,20 @@
 # Checks for header files.
 AC_HEADER_STDC
 
-if test "$DRI" != no; then
+if test "x$DRI" != xno; then
+	if test "$cross_compiling" = "no" ; then
         AC_CHECK_FILE([${sdkdir}/dri.h],
                       [have_dri_h="yes"], [have_dri_h="no"])
         AC_CHECK_FILE([${sdkdir}/sarea.h],
                       [have_sarea_h="yes"], [have_sarea_h="no"])
         AC_CHECK_FILE([${sdkdir}/dristruct.h],
                       [have_dristruct_h="yes"], [have_dristruct_h="no"])
+		AC_CHECK_HEADER
+	else
+		have_dri_h="yes"
+		have_sarea_h="yes"
+		have_dristruct_h="yes"
+	fi
 fi
 
 AC_MSG_CHECKING([whether to include DRI support])