# Since my name is Makefile-3 but not the default Makefile,
# to use me you have to specify: make -f Makefile-3

mainprog : mainprog.o bb.o rect.o
	gcc -g $^ -o $@

%.o : %.c
	gcc -g -c $<

clean :
	rm -f *.o mainprog .depend
.PHONY: clean

.depend: mainprog.c bb.c rect.c
	gcc -MM $^ > .depend
include .depend