$OpenBSD: patch-Makefile,v 1.2 2011/11/09 12:18:19 dcoppa Exp $
--- Makefile.orig	Wed Nov  9 10:31:40 2011
+++ Makefile	Wed Nov  9 11:30:28 2011
@@ -1,7 +1,8 @@
 # vim:ts=8
 
 CC	= cc
-CFLAGS	= -O2 -Wall -Wunused -Wmissing-prototypes -Wstrict-prototypes
+CFLAGS	?= -O2 -Wall
+CFLAGS	+= -Wunused -Wmissing-prototypes -Wstrict-prototypes
 #CFLAGS += -g
 INCLUDES = -I/usr/X11R6/include
 
