CODEWITHSUNDEEP
gnu-make
Kjeld Flarup
Kjeld Flarup

Reputation: 2531

Can a rule be declared in a define in gnu-make?

I thought that I could use the define directive in make to make multiple alike rules

define TESTPRG

${1}: 
        echo Build ${1}

endef

$(call TESTPRG,x)

But I get this output

$ make
make: *** No rule to make target 'echo', needed by '
x'.  Stop.

It looks like the newline in my define is lost

$ make -n -p | grep echo
make: *** No rule to make target 'echo', needed by '
x'.  Stop.
    echo Build ${1}
x: echo Build x
echo:

Am I just trying to do something that the define is not supposed to be used for.

Kjeld

Upvotes: 1

Views: 282

Answers (1)

raspy
raspy

Reputation: 4261

This is exactly what define is supposed to be used for. You just need to remember to $(eval) it as a part of Makefile:

$ cat Makefile
define TESTPRG

${1}:
        echo Build ${1}

endef

$(eval $(call TESTPRG,x))

$ make
echo Build x
Build x

Upvotes: 4

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