--- Makefile.orig	Fri May 12 18:39:38 2006
+++ Makefile	Sat May 13 19:06:56 2006
@@ -1,5 +1,5 @@
 
-prefix = /usr/local
+prefix?= /usr/local
 gamesdir = ${prefix}/games
 datadir = ${prefix}/share
 pkgdatadir = $(datadir)/games/monsterz
@@ -22,7 +22,7 @@
 all: monsterz
 
 monsterz: monsterz.c
-	$(CC) -Wall monsterz.c -DDATADIR=\"$(pkgdatadir)\" -DSCOREFILE=\"$(scorefile)\" -o monsterz
+	$(CC) $(CFLAGS) -Wall monsterz.c -DDATADIR=\"$(pkgdatadir)\" -DSCOREFILE=\"$(scorefile)\" -o monsterz
 
 bitmap: $(BITMAP)