--- Makefile.orig	2004-11-06 06:25:45.000000000 -0500
+++ Makefile	2005-04-04 06:54:21.000000000 -0400
@@ -36,16 +36,16 @@
 # (See the Sysvarcstuf shar file)
 #SYSTEM = -DGEMDOS=1 -fstrength-reduce -fomit-frame-pointer -finline-functions -fdefer-pop -mpcrel
 #SYSTEM = -DBSD=1
-SYSTEM = -DSYSV=1
+SYSTEM = -DBSD=1
+OPT = -O2
 
-OPT = -O
 # For MWC 3.0 on the Atari ST, use:
 #CFLAGS = -VCOMPAC -VPEEP
 CFLAGS = $(OPT) $(SYSTEM)
 
 # GNU's gcc is very nice, if you've got it. Otherwise just cc.
 #CC = cgcc -mshort -mbaserel
-CC = cc
+CC = gcc
 
 # tmclock is only needed on Unix systems...
 TMCLOCK = tmclock.o
@@ -72,7 +72,7 @@
 	$(CC) $(OPT) -o marc$(PROG) $(MOBJ) $(TMCLOCK) $(LIBS)
 
 clean:
-	-rm *.o arc$(PROG) marc$(PROG)
+	-rm -f *.o arc$(PROG) marc$(PROG)
 
 arc.o:	$(SRCDIR)arc.c	$(HEADER)
 	$(CC) $(CFLAGS) -c $(SRCDIR)arc.c