Makefile中的正则表达式 [英] Regex in makefile

问题描述

我试图找到如何在makefile中使用正则表达式，例如:

I am trying to find how to use regular expressions in a makefile, for example:

foo:
ifeq ($(bar),^ver[0-9]+)
     do something
else ($(baz),word)
     do something else
endif

输入时，

foo bar = ver1.1.0 -必须做做某事"，

foo baz =单词-必须做其他事情".

foo baz = word - must do "do something else".

这不起作用.有人可以帮助我了解如何解决我的问题吗?

This doesn't work. Can someone help me to understand how to resolve my issue?

推荐答案

Make无法处理正则表达式，因此必须将其工作委托给Shell:

Make can't handle regular expressions, so it must delegate that work to the shell:

ZAP := $(shell [[ $(bar) =~ ver[0-9.]+$$ ]] && echo matched)

foo:
ifdef ZAP
    @echo BLUE
else
    @echo GREEN
endif

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