From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1MlXsV-0004m1-OO
	for qemu-devel@nongnu.org; Wed, 09 Sep 2009 20:51:11 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1MlXsR-0004ks-7e
	for qemu-devel@nongnu.org; Wed, 09 Sep 2009 20:51:11 -0400
Received: from [199.232.76.173] (port=57128 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1MlXsR-0004kp-14
	for qemu-devel@nongnu.org; Wed, 09 Sep 2009 20:51:07 -0400
Received: from e1.ny.us.ibm.com ([32.97.182.141]:32993)
	by monty-python.gnu.org with esmtps
	(TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60)
	(envelope-from <aliguori@us.ibm.com>) id 1MlXsQ-0000EC-Jq
	for qemu-devel@nongnu.org; Wed, 09 Sep 2009 20:51:06 -0400
Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236])
	by e1.ny.us.ibm.com (8.14.3/8.13.1) with ESMTP id n8A0oP6Q002066
	for <qemu-devel@nongnu.org>; Wed, 9 Sep 2009 20:50:25 -0400
Received: from d01av03.pok.ibm.com (d01av03.pok.ibm.com [9.56.224.217])
	by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id
	n8A0p2BZ185876
	for <qemu-devel@nongnu.org>; Wed, 9 Sep 2009 20:51:02 -0400
Received: from d01av03.pok.ibm.com (loopback [127.0.0.1])
	by d01av03.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id
	n8A0p20P017531
	for <qemu-devel@nongnu.org>; Wed, 9 Sep 2009 20:51:02 -0400
Message-ID: <4AA84D74.4030905@us.ibm.com>
Date: Wed, 09 Sep 2009 19:51:00 -0500
From: Anthony Liguori <aliguori@us.ibm.com>
MIME-Version: 1.0
References: <200909092236.n89MaDVS020267@d01av01.pok.ibm.com>
	<Pine.LNX.4.64.0909100409430.2139@linmac.oyster.ru>
	<m3d45z63ry.fsf@neno.mitica>
	<Pine.LNX.4.64.0909100434590.4541@linmac.oyster.ru>
In-Reply-To: <Pine.LNX.4.64.0909100434590.4541@linmac.oyster.ru>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: [Qemu-devel] Re: [COMMIT 8a2e6ab] Remove CFLAGS parameter in
	cc-option
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: malc <av1474@comtv.ru>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Juan Quintela <quintela@redhat.com>

malc wrote:
> On Thu, 10 Sep 2009, Juan Quintela wrote:
>
>   
>> malc <av1474@comtv.ru> wrote:
>>     
>>> On Wed, 9 Sep 2009, Anthony Liguori wrote:
>>>
>>>       
>>>> From: Juan Quintela <quintela@redhat.com>
>>>>
>>>> With cc-option we are testing if gcc just accept a particular option, we 
>>>> don't need CFLAGS at all.  And this fixes the recursive problem with 
>>>> CFLAGS
>>>>         
>>> This is nonsense, previous options, those in CFLAGS, might conflict with
>>> the new ones.
>>>       
>> The only thing that we are testing is if gcc support that _option_
>>
>> What is the use case tat you have in mind?  A first grep on gcc man page
>> don't show options that conflict with each other.
>>     
>
> If you want artificial exmaples i can come up with plenty, and from the
> top of my head -m486 with -msse2 are quite incompatible with each other,
> furthermore, point is this - testing one option in isolation is broken.
>   

I think this is a pretty valid point.  I think it's worth while to try 
and better understand what the recursion problem was in the first place.

-- 
Regards,

Anthony Liguori