targets = father son
all: $(targets)

father: father.o
	$(CC) -o $@ $^ $(CFLAGS)

son: son.o
	$(CC) -o $@ $^ $(CFLAGS)

%.o: %.c
	$(CC) -c $^ -o $@ $(CFLAGS)

clean:
	rm -f $(targets)
	rm -f *.o
	rm -f task_dump*
	rm -f task*