diff -u -r trunk/configure.ac.in.original trunk/configure.ac.in
--- trunk/configure.ac.in.original	2006-08-16 19:00:52.832331250 +0200
+++ trunk/configure.ac.in	2006-08-16 19:01:52.300047750 +0200
@@ -75,7 +75,7 @@
 dnl Render support
 dnl
 have_render="no"
-if $PKG_CONFIG --print-errors --exists xrender 2> /dev/null; then
+if $PKG_CONFIG --print-errors --exists xrender 2>&1; then
   PKG_CHECK_MODULES(RENDER, xrender)
   have_render="yes"
   AC_DEFINE([HAVE_RENDER], [1], [Define to enable render])
@@ -120,7 +120,7 @@
 
 if test x"$enable_compositor" = x"yes"; then
   if test x"$have_render" = x"yes"; then
-    if $PKG_CONFIG --print-errors --exists xcomposite xfixes xdamage xrender 2> /dev/null; then
+    if $PKG_CONFIG --print-errors --exists xcomposite xfixes xdamage xrender 2>&1; then
       PKG_CHECK_MODULES(COMPOSITOR, xcomposite >= 0.2 xfixes xdamage)
       AC_DEFINE([HAVE_COMPOSITOR], [1], [Define to enable compositor])
       ENABLE_COMPOSITOR="--enable-compositor"