--- mosmlyac/Makefile.orig	Tue Feb  3 21:13:27 2004
+++ mosmlyac/Makefile	Tue Feb  3 21:13:37 2004
@@ -1,6 +1,6 @@
 # Unix Makefile for the parser generator.
 
-CFLAGS=-O -DNDEBUG
+CFLAGS += -DNDEBUG
 
 include ../Makefile.inc