--- configure.in.orig	2011-02-04 17:29:28.000000000 +0100
+++ configure.in	2011-02-04 17:29:52.000000000 +0100
@@ -17,7 +17,7 @@
 AC_PROG_RANLIB
 
 dnl CFLAGS set-up
-CFLAGS="-DSEPARATOR=\"'/'\"" 
+CFLAGS=" $CFLAGS -DSEPARATOR=\"'/'\"" 
 dnl CFLAGS="-ansi -pedantic"
 dnl CXXFLAGS=""
 dnl CPPFLAGS=""