--- makefile.orig	Fri Jul 16 16:47:54 1999
+++ makefile	Wed Mar  1 02:11:09 2000
@@ -22,16 +22,15 @@
 # THIS SOFTWARE.
 # ****************************************************************/
 
-CFLAGS = -g
-CFLAGS = -O2
-CFLAGS =
+#CFLAGS = -g
+CFLAGS ?= -O2
+#CFLAGS =
 
-CC = gcc -Wall -g
-CC = /opt/pure/purify/purify cc
-CC = cc
+CC ?= gcc -Wall -g
+#CC = /opt/pure/purify/purify cc
+#CC = cc
 
 YACC = bison -y
-YACC = yacc
 YFLAGS = -d
 
 OFILES = b.o main.o parse.o proctab.o tran.o lib.o run.o lex.o