From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754230Ab1JGUA1 (ORCPT ); Fri, 7 Oct 2011 16:00:27 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:51884 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753134Ab1JGUA0 (ORCPT ); Fri, 7 Oct 2011 16:00:26 -0400 X-Authority-Analysis: v=1.1 cv=agqPq5NoKwAPC9P66H7dbYUCjxvmT73as08i4x3aqAA= c=1 sm=0 a=5E__mjtSOyIA:10 a=5SG0PmZfjMsA:10 a=Q9fys5e9bTEA:10 a=17wjrS5wAhQaEczCPkpxpQ==:17 a=3Ogy38lQgbLud3jf1FQA:9 a=PUjeQqilurYA:10 a=17wjrS5wAhQaEczCPkpxpQ==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.83.30 Subject: Re: [PATCH] kbuild: let object files depend on recordmcount instead of its sources From: Steven Rostedt To: Uwe =?ISO-8859-1?Q?Kleine-K=F6nig?= Cc: Michal Marek , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org Date: Fri, 07 Oct 2011 16:00:25 -0400 In-Reply-To: <20111007194750.GX6949@pengutronix.de> References: <1317993561-16242-1-git-send-email-u.kleine-koenig@pengutronix.de> <20111007194750.GX6949@pengutronix.de> Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.0.3- Content-Transfer-Encoding: 8bit Message-ID: <1318017625.4729.80.camel@gandalf.stny.rr.com> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2011-10-07 at 21:47 +0200, Uwe Kleine-König wrote: > I could reproduce the build failure Steve is seeing now (enabling > CONFIG_FUNCTION_TRACER helps, stupid me). I think the problem is that > with my change empty.o depends on recordmcount and in a way that I don't > understand recordmcount depends on empty.o. I wonder if it's possible to > get rid of the latter dependency?! It may be possible but probably not worth it. When I stumbled on empty.o I talked with some of the kbuild folks, and IIRC, it is pretty core to the dependency structure. Changing it may break other things easily. -- Steve