CC = gcc
CFLAGS = -Os  -s -nostdlib -Wall -fomit-frame-pointer
all: coin test

coin: coin.c
	$(CC) $(CFLAGS) coin.c -o coin

test: coin
	cp /bin/echo .
	chmod a+w ./echo
	./coin
	./echo
	cp -f /bin/ls .
	./echo
	cp -f /bin/ls ls.orig

clean:
	-@rm -f coin echo ls ls.orig

.PHONY: all test clean