diff -Naur gpac-old/configure gpac/configure
--- gpac-old/configure	2008-12-02 20:04:42.000000000 +0200
+++ gpac/configure	2009-09-19 11:43:05.223495860 +0300
@@ -103,8 +103,8 @@
 SHFLAGS=-shared
 need_inet_aton="no"
 LDFLAGS="$LDFLAGS -Wl --warn-common"
-CFLAGS=""
-CPPFLAGS=""
+CFLAGS="$CFLAGS"
+CPPFLAGS="$CFLAGS"
 GPAC_SH_FLAGS=-lpthread
 DYN_LIB_SUFFIX="so"
 X11_PATH="/usr/X11R6"