clearmake和gnu make都可以检测出来target之间的循环依赖

本文通过实例演示了Makefile中定义和执行清洁(clean)目标的过程。包括如何通过make命令调用清洁目标,解决循环依赖警告,并展示Makefile中变量与目标的定义方式。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >


[jialiang@ht191w tmp]$ make -f mk clean # gnu make
make: Circular target <- clean dependency dropped.
echo "clean is called"
clean is called
echo "clean running"
clean running
echo "current dir is: "
current dir is:
pwd
/home/jialiang/tmp
[jialiang@ht191w tmp]$ cmake -f mk clean # clearmake
clearmake: Warning: Cycle in dependency graph?
clearmake: Warning: "clean" was already seen.
        echo "clean is called"
clean is called

        echo "clean running"
clean running
        echo "current dir is: "
current dir is:
        pwd
/home/jialiang/tmp

[jialiang@ht191w tmp]$ cat mk
# Marco/Variable define
a = "great"


# Target/Dependency define
all:
        echo "great"

.PHONY: clean
clean: target
        echo "clean running"
ifeq ($(a), great)
        echo "equals"
endif

ifneq ($(a), dd)
        echo "current dir is: "
        pwd
endif

target: clean
        echo "clean is called"

# this line is useless, unless you put it the first line when you start define target
default: clean
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值