$NetBSD$

--- Makefile.orig	2011-02-18 14:27:22.000000000 +0000
+++ Makefile
@@ -9,8 +9,8 @@ SOCKETLIBS=
 #SOCKETLIBS = -lsocket -lnsl
 
 CC=gcc
-CFLAGS=-O3 -Wall `sdl-config --cflags` -DPREFIX=\"$(PREFIX)\"
-LDFLAGS=`sdl-config --libs` $(SOCKETLIBS)
+CFLAGS+=-Wall `sdl-config --cflags` -DPREFIX=\"$(PREFIX)\"
+LDFLAGS+=`sdl-config --libs` $(SOCKETLIBS)
 
 
 OBJS= \
