Date: Sun, 16 Mar 2003 00:18:56 +0200 From: Ruslan Ermilov <ru@FreeBSD.ORG> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: arch@FreeBSD.ORG Subject: Re: Bug in our make or undocumented feature? Message-ID: <20030315221856.GB54789@sunbay.com> In-Reply-To: <20030315165221.27d3d424.Alexander@Leidinger.net> References: <20030315165221.27d3d424.Alexander@Leidinger.net>
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On Sat, Mar 15, 2003 at 04:52:21PM +0100, Alexander Leidinger wrote:
> Hi,
>=20
> this part of a makefile doesn't work for me:
> ---snip---
> WANTED_PORTS=3D shells/zsh lang/perl5
>=20
> mytarget:
> .for i in ${WANTED_PORTS}
> @echo "${i}"
> .if ${i} =3D=3D lang/perl5 =20
> @echo "Yep, perl5."
> .endif
> .endfor
> ---snip---
>=20
This is the nasty implementation of the .for operator.
It works by duplicating the lines for each argument,
substituting the value, so the above would be evaluate
like this, so that i isn't a real variable:
mytarget:
@echo "shells/zsh"
=2Eif shells/zsh =3D=3D lang/perl5 =20
@echo "Yep, perl5."
=2Eendif
@echo "lang/perl5"
=2Eif lang/perl5 =3D=3D lang/perl5 =20
@echo "Yep, perl5."
=2Eendif
After that, the (recently documented) rule requiring the
LHS of the test to be a variable should be applied.
P.S. -arch was a bad choice for mailing this.
Cheers,
--=20
Ruslan Ermilov Sysadmin and DBA,
ru@sunbay.com Sunbay Software AG,
ru@FreeBSD.org FreeBSD committer,
+380.652.512.251 Simferopol, Ukraine
http://www.FreeBSD.org The Power To Serve
http://www.oracle.com Enabling The Information Age
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