--- util-macros-1.2.1/xorg-macros.m4.in-orig	2009-06-08 13:49:09.000000000 +0200
+++ util-macros-1.2.1/xorg-macros.m4.in	2009-06-08 13:51:28.000000000 +0200
@@ -445,7 +445,7 @@
     CWARNFLAGS="-Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes \
 -Wmissing-declarations -Wnested-externs -fno-strict-aliasing \
 -Wbad-function-cast"
-    case `gcc -dumpversion` in
+    case `$CC -dumpversion 2>/dev/null` in
     3.4.* | 4.*)
 	CWARNFLAGS+=" -Wold-style-definition -Wdeclaration-after-statement"
 	;;