1CC = $(CROSS_COMPILE)gcc 2CFLAGS = -g -Wall 3SRCS=$(wildcard *.c) 4OBJS=$(SRCS:.c=.o) 5 6$(OBJS): $(SRCS) 7 $(CC) $(CFLAGS) -c $(SRCS) 8 9.PHONY: clean 10 11clean: 12 $(RM) $(OBJS) 13