编写Makefile 进行编译多个C文件

EXEC =hello
CC :=gcc

SRC = hello.c
SRC += cmd.c
SRC += test.c

CFLAGS += -I ./

OBJS = $(SRC:%.c=%.o)

$(EXEC): $(OBJS)

all :
$(CC) $(CFLAGS) $(SRC) -o hello

clean :
rm -rf *.o
rm -rf hello