regexmakefile

Regex in makefile

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

When i type,

foo bar = ver1.1.0 - must do "do something",

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

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

Solution

  • 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