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From: naddy@mips.inka.de (Christian Weisgerber)
Date: Thu, 19 Jun 2003 23:15:08 +0000 (UTC)
Message-ID: <bctg5s$etk$1@kemoauc.mips.inka.de>
References: <200306190941.h5J9fIYL073911@repoman.freebsd.org>
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Originator: naddy@mips.inka.de (Christian Weisgerber)
To: freebsd-ports@freebsd.org
Subject: Re: config.guess (was: Re: cvs commit: ports/audio/libmikmod/files
	patch-config.sub)
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Kris Kennaway <kris@obsecurity.org> wrote:

> What is the benefit of a global config.guess?
> 
> My instinct is that a global config.guess would cause problems with
> some ports: I would expect that a lot of ports hack their configure
> scripts in unmentionable ways that make this difficult.  What was
> OpenBSD's experience in this regard?  Do the benefits outweigh the
> pain?

Then it will come as a surprise to you that OpenBSD's experience
has been uniformly positive.  I cannot remember a single instance
where overwriting the included config.guess with the system one
caused any problem.  config.guess only provides the cpu-vendor-os
triplet.  It does not interact with the rest of configure in other
ways.

OpenBSD introduced copying a central config.{guess,sub} template
into CONFIG_GUESS_DIRS when the copies included with most distfiles
failed to properly recognize the then new OpenBSD/powerpc platform.


(If anybody wants to look at this in the OpenBSD repository:
 * The templates are in ports/infrastructure/db/config.{guess,sub}.
 * The make glue is in ports/infrastructure/mk/gnu.port.mk.  The
   variable is actually called MODGNU_CONFIG_GUESS_DIRS.)

-- 
Christian "naddy" Weisgerber                          naddy@mips.inka.de