diff -Nru syslog-ng-1.3.17/configure.in syslog-ng-1.3.17.new/configure.in
--- syslog-ng-1.3.17/configure.in	Fri Feb 18 11:16:47 2000
+++ syslog-ng-1.3.17.new/configure.in	Mon Feb 28 14:53:21 2000
@@ -142,10 +142,10 @@
 AC_MSG_RESULT(ok)
 
 if test "$with_debug" = "yes" ; then
-	CFLAGS="-g -DYYDEBUG -Wall $LIBOL_CFLAGS -D_GNU_SOURCE"
+	CFLAGS="$CFLAGS -g -DYYDEBUG -Wall $LIBOL_CFLAGS -D_GNU_SOURCE"
 	YFLAGS="-v -d"
 else
-	CFLAGS="-O2 -Wall $LIBOL_CFLAGS -D_GNU_SOURCE"
+	CFLAGS="$CFLAGS -Wall $LIBOL_CFLAGS -D_GNU_SOURCE"
 	YFLAGS="-d"
 fi