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Re: Host settings for GNU in configure*?

From: Samuel Thibault
Subject: Re: Host settings for GNU in configure*?
Date: Thu, 25 Aug 2011 10:48:01 +0200
User-agent: Mutt/1.5.21+34 (58baf7c9f32f) (2010-12-30)

Svante Signell, le Thu 25 Aug 2011 10:20:44 +0200, a écrit :
> $host_os:
> gnu when specified
> gnu0.3 from config.guess

Sure, if you force something, config.guess follows it.

> 1) Where to find the specification resulting in i486-pc-gnu?

I don't understand the question. Why would you want that ?

> 2) What are the roles of config.guess/config.sub from autotools-dev? 

Well, see the autotools doc: they detect the machine they're run on.

> 3) How to specify gnu uniquely in configure and configure.ac?
> Example: configure.ac
> *-linux*|*-k*bsd-gnu) action;; ->  *-linux*|*-k*bsd-gnu|"gnu here") action;;

I have added a section to the wiki, it's pending push.

> A common denominator of $host is
> c) *-gnu*

This one: don't care the actual architecture, don't care the actual
version of GNU.

> 5) Is it OK if placed last?

It does not matter to the "case" statement.

> DEB_HOST_ARCH_OS := $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
> DEB_HOST_GNU_TYPE=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
> DEB_BUILD_GNU_TYPE=$(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
> resulting in: hurd, i486-gnu, i486-gnu respectively.
> 6) Are these only local to the rules file?

I don't understand the question. They are dpkg-architecture output,
that's all.


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