From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-patches-return-70220-listarch-gdb-patches=sources.redhat.com@sourceware.org>
Received: (qmail 24124 invoked by alias); 16 Feb 2010 10:07:01 -0000
Received: (qmail 24105 invoked by uid 22791); 16 Feb 2010 10:07:00 -0000
X-SWARE-Spam-Status: No, hits=-6.8 required=5.0 	tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,SPF_PASS
X-Spam-Check-By: sourceware.org
Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28)     by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 16 Feb 2010 10:06:59 +0000
Received: from int-mx04.intmail.prod.int.phx2.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.17]) 	by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o1GA6iej002128 	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); 	Tue, 16 Feb 2010 05:06:45 -0500
Received: from [10.36.6.242] (vpn1-6-242.ams2.redhat.com [10.36.6.242]) 	by int-mx04.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o1GA6gHZ002930; 	Tue, 16 Feb 2010 05:06:43 -0500
Message-ID: <4B7A6E32.6070307@redhat.com>
Date: Tue, 16 Feb 2010 10:07:00 -0000
From: Nick Clifton <nickc@redhat.com>
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc12 Thunderbird/3.0.1
MIME-Version: 1.0
To: Andreas Schwab <schwab@linux-m68k.org>
CC: binutils@sourceware.org, gdb-patches@sourceware.org,         gcc-patches@gcc.gnu.org
Subject: Re: Remove config.cache files when reconfiguring at top level
References: <m3k4ue6a9i.fsf@redhat.com> <m3pr46u5ng.fsf@hase.home>	<4B796E1D.7000104@redhat.com> <m2k4ue2x62.fsf@igel.home>
In-Reply-To: <m2k4ue2x62.fsf@igel.home>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-patches.sourceware.org>
List-Subscribe: <mailto:gdb-patches-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-patches-owner@sourceware.org
X-SW-Source: 2010-02/txt/msg00379.txt.bz2

Hi Andreas,

>> Ah - I did not know that users would ever modify the cache files.
>
> That's the only way to override cross-compile defaults in target
> libraries.

Hmm, I feel that there ought to be a better way to do that, but OK.

I would like to make the command line option to preserve the 
config.cache files opt-in, (ie the files are deleted unless this option 
is enabled as the configure script is run).  The reason being that I 
think that most users would expect a:

   configure <new-flags>
   make distclean
   make

sequence to just work without needing any extra configure options.  So I 
would propose adding a:

   --preserve-caches

option.  Is that OK with you ?

Cheers
   Nick