.PHONY: clean, mrproper CC = gcc CFLAGS = -g -Wall all: ex1 %.o: %.c $(CC) $(CFLAGS) -c -o $@ $< ex1: ex1.o $(CC) $(CFLAGS) -o $@ $+ clean: rm -f *.o core.* mrproper: clean rm -f ex1 run: ex1 ./$<