--- makefile.hdr.orig	Fri Mar  6 23:04:57 1992
+++ makefile.hdr	Fri Dec 27 23:15:13 2002
@@ -45,11 +45,11 @@
 #emit MachFLAGS
 MachFLAGS =
 
-CFLAGS = -O $(DFLAGS) $(DIRFLAGS) $(ExtraCFLAGS) $(IFLAGS) $(MachFLAGS) 
+CFLAGS += $(DFLAGS) $(DIRFLAGS) $(ExtraCFLAGS) $(IFLAGS) $(MachFLAGS) 
 IFLAGS = -I. -I$(RI)
 
 #ifdef GCC
-CC=gcc
+CC ?= gcc
 #endif