Re: [Mingw-users] makefile problem

[Michael G. <mg...@te...>]

> i'm a newbie and need your help figuring out the problem with the=20
> makefile below. i tried to search through the archive for this problem=20
> and couldn't find it. sorry if this turns out to be duplicate.
>=20
> makefile
> ----------------------------------------------------
> ABC =3D a b c
>         =20
> define show
> $(1):  =20
>     @echo $(1)
> endef
>=20
> $(foreach letter,$(ABC),$(eval $(call show,$(letter))))
> ----------------------------------------------------
>=20
> running mingw32-make on the above makefile produces the following output:
> a
>=20
> although i expected it to be:
> a
> b
> c
> ----------------------------------------------------
>=20
> thank you for your help and patience,

I think you misunderstand what $(foreach ...) and $(eval ...) are doing.

Your makefile is essentially the same as:
=2D---------------------------------------------------
ABC =3D a b c
        =20
a:
	@echo $@

b:
	@echo $@

c:
	@echo $@
=2D---------------------------------------------------

or even:
=2D---------------------------------------------------
ABC =3D a b c
        =20
$(ABC):
	@echo $@
=2D---------------------------------------------------

The make buildin function foreach in combination with eval does
not execute any commands. It _creates_ new targets (and rules)
dynamically.

HTH, best,
Michael
=2D-=20
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 Michael Gerdau       email: mg...@te...
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