From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=FROM_EXCESS_BASE64, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 293E9C606A7 for ; Mon, 8 Jul 2019 09:42:02 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F1E3C20659 for ; Mon, 8 Jul 2019 09:42:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F1E3C20659 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39862 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hkQ9p-0000lx-9f for qemu-devel@archiver.kernel.org; Mon, 08 Jul 2019 05:42:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50266) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hkQ9J-00007g-Gl for qemu-devel@nongnu.org; Mon, 08 Jul 2019 05:41:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hkQ9I-0003iN-9N for qemu-devel@nongnu.org; Mon, 08 Jul 2019 05:41:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42952) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hkQ9I-0003eM-3c for qemu-devel@nongnu.org; Mon, 08 Jul 2019 05:41:28 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AE48031628E7; Mon, 8 Jul 2019 09:41:10 +0000 (UTC) Received: from redhat.com (unknown [10.42.17.95]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CE3995C226; Mon, 8 Jul 2019 09:41:09 +0000 (UTC) Date: Mon, 8 Jul 2019 10:41:07 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Peter Maydell Message-ID: <20190708094107.GD3082@redhat.com> References: <3c8b83fe-120b-40e6-84d5-5a3b88e46ee3@ilande.co.uk> <914f608a-5128-87a5-1c08-e20db88ad216@ilande.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.0 (2019-05-25) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Mon, 08 Jul 2019 09:41:11 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] Parallel make build fails on fast machine X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: Mark Cave-Ayland , qemu-devel Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Sat, Jul 06, 2019 at 09:35:30PM +0100, Peter Maydell wrote: > On Sat, 6 Jul 2019 at 11:28, Mark Cave-Ayland > wrote: > > > > On 06/07/2019 11:16, Peter Maydell wrote: > > > If you just do 'make' rather than 'make install' does it fail the same way? > > > > Interesting. A quick test shows that "make V=1 -j2" works fine, it's just "make V=1 > > -j2 install" which is failing. > > Mmm. I suspect most people just do the plain make (with the make install > phase either never or as a second command afterwards), so missing-dependency > bugs between the install targets and the build targets are probably more > likely to lurk around. We should stil fix them, though, assuming we > can track them down... The main 'install' target depends on 'all': install: all $(if $(BUILD_DOCS),install-doc) install-datadir install-localstatedir \ but I think still allows 'install-doc', 'install-datadir' and 'install-localstatedir' to parallelize wrt 'all'. I guess the fix is to make each of those 'install-xxx' targets depend on 'all' instead. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|