--- Makefile.orig	2010-08-07 13:06:42 UTC
+++ Makefile
@@ -44,14 +44,14 @@ SYSTEM = -DSYSV=1
 OPT = -O -Wall
 # For MWC 3.0 on the Atari ST, use:
 #CFLAGS = -VCOMPAC -VPEEP
-CFLAGS = $(OPT) $(SYSTEM)
+CFLAGS+=$(SYSTEM)
 
 # GNU's gcc is very nice, if you've got it. Otherwise just cc.
 #CC = cgcc -mshort -mbaserel
-CC = cc
+#CC = cc
 
 # tmclock is only needed on Unix systems...
-TMCLOCK = tmclock.o
+TMCLOCK = #tmclock.o
 
 # Integer-only stdio routines for Atari ST.
 #LIBS=-liio16