From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1Lx908-0003V1-2V
	for qemu-devel@nongnu.org; Thu, 23 Apr 2009 20:10:44 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1Lx903-0003QH-An
	for qemu-devel@nongnu.org; Thu, 23 Apr 2009 20:10:43 -0400
Received: from [199.232.76.173] (port=35295 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1Lx903-0003Q1-44
	for qemu-devel@nongnu.org; Thu, 23 Apr 2009 20:10:39 -0400
Received: from mail-gx0-f176.google.com ([209.85.217.176]:55809)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <anthony@codemonkey.ws>) id 1Lx902-0006Dv-J8
	for qemu-devel@nongnu.org; Thu, 23 Apr 2009 20:10:38 -0400
Received: by gxk24 with SMTP id 24so1694532gxk.10
	for <qemu-devel@nongnu.org>; Thu, 23 Apr 2009 17:10:37 -0700 (PDT)
Message-ID: <49F1037A.80703@codemonkey.ws>
Date: Thu, 23 Apr 2009 19:10:34 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
MIME-Version: 1.0
Subject: Re: [Qemu-devel] [7234] Use a more natural order
References: <E1Lx3gB-0002ko-Iq@cvs.savannah.gnu.org>
	<20090423185308.GH3795@csclub.uwaterloo.ca>
	<f43fc5580904231201k12ccd023l363e2633d90a30da@mail.gmail.com>
	<20090423191040.GI3795@csclub.uwaterloo.ca>
	<5d6222a80904231215p62c6594asc50230b252e892aa@mail.gmail.com>
	<49F0C826.4060503@codemonkey.ws>
	<20090423195902.GN3795@csclub.uwaterloo.ca>
	<49F0C9AA.1070703@codemonkey.ws>
	<20090423205431.GO3795@csclub.uwaterloo.ca>
	<49F0DA5A.8090400@codemonkey.ws>
	<20090423221334.GO13326@shareable.org>
In-Reply-To: <20090423221334.GO13326@shareable.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
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: Jamie Lokier <jamie@shareable.org>
Cc: Blue Swirl <blauwirbel@gmail.com>, Glauber Costa <glommer@gmail.com>, qemu-devel@nongnu.org, Lennart Sorensen <lsorense@csclub.uwaterloo.ca>

Jamie Lokier wrote:
> Anthony Liguori wrote:
>   
>>> It might take 30 minutes, but it saves large amounts of time for everyone
>>> else later.  Also I would hope make is smart enough to only recompile
>>> the bits that changed, so that shouldn't take as long.
>>>       
>> A great deal of our objects are target specific.  Almost everything 
>> depends on CONFIG_USER_ONLY too.  This means that full compilation takes 
>> a very long time.
>>     
>
> You might find ccache helps.  For this kind of testing, nearly every
> compile should be a cache hit, so the slow part is limited running
> configure, make and preprocessing, and the final link.
>   

If it wasn't for ccache, my current testing setup would probably take 
days to complete :-)

For each patch, I do an rm -rf $(builddir) to also catch any possible 
bugs in configure and avoid false positives from old config-* files.

Regards,

Anthony Liguori