CFLAGS=-O
all: 	pack unpack
pack unpack: 	$$@.o packlib.a
	$(CC) -o $@ $@.o packlib.a -lm
packlib.a:	packlib.a(closefile.o)  
		 packlib.a(openfile.o)  
		 packlib.a(squeeze.o)  
		 packlib.a(unsqueeze.o)  
		 packlib.a(checksum.o)
packlib.a(closefile.o):	filehdr.h
packlib.a(openfile.o):	filehdr.h
packlib.a(squeeze.o):	filehdr.h
packlib.a(unsqueeze.o):	filehdr.h
packlib.a(checksum.o): 	checksum.h
pack.o unpack.o: 	filehdr.h checksum.h