--- Makefile.orig	Fri Mar  9 20:55:41 2001
+++ Makefile	Fri Mar  9 20:55:58 2001
@@ -3,9 +3,10 @@
 CHAR_SIZE=16
 
 DEBUG=		-g
-CC=		gcc
+CC?=		gcc
 GCCFLAGS=	-Wall -ansi -pedantic
-CFLAGS=		$(GCCFLAGS) $(DEBUG) -O -DCHAR_SIZE=$(CHAR_SIZE)
+CFLAGS?=	-O
+CFLAGS+=	$(GCCFLAGS) $(DEBUG) -DCHAR_SIZE=$(CHAR_SIZE)
 LDFLAGS=	$(DEBUG)
 
 # You may well have to change this line.  Just "LIBS=" will probably work.