http://wald.intevation.org/tracker/index.php?func=detail&aid=1100&group_id=29&atid=220
--- configure.orig	2009-08-18 01:48:28.000000000 -0500
+++ configure	2009-08-24 05:17:33.000000000 -0500
@@ -148,7 +148,7 @@
 )
 fi
 
-XFLAGS="$CFLAGS"
+XFLAGS="$CPPFLAGS"
 CPPFLAGS=`$LIBOPENVASCONFIG --cflags`
 CPPFLAGS="$XFLAGS"