--- config.orig	Tue Jul  6 18:17:42 1999
+++ config	Tue Jul  6 18:18:03 1999
@@ -3,7 +3,7 @@
 # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================
 
 # you need an ANSI C compiler. gcc is a popular one.
-CC= gcc
+CC?= gcc
 WARN= -ansi -Wall
 
 # on SGI's, cc is ANSI.
@@ -51,4 +51,4 @@
 INCS= -I$(INC) $(EXTRA_INCS)
 DEFS= $(COMPAT) $(NUMBER) $(OLD_ANSI) $(EXTRA_DEFS)
 
-CFLAGS= -O2 $(WARN) $(INCS) $(DEFS)
+CFLAGS+= $(WARN) $(INCS) $(DEFS)