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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 0C194C32751 for ; Wed, 7 Aug 2019 20:21:33 +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 CA88D2199C for ; Wed, 7 Aug 2019 20:21:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA88D2199C 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]:44946 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hvSR9-0007SK-VK for qemu-devel@archiver.kernel.org; Wed, 07 Aug 2019 16:21:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59787) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hvSQo-00073t-7W for qemu-devel@nongnu.org; Wed, 07 Aug 2019 16:21:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hvSQn-0003bX-4s for qemu-devel@nongnu.org; Wed, 07 Aug 2019 16:21:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52496) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hvSQn-0003Z1-03 for qemu-devel@nongnu.org; Wed, 07 Aug 2019 16:21:09 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2BEED30BCB96; Wed, 7 Aug 2019 20:21:08 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-117-142.ams2.redhat.com [10.36.117.142]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A642D60BE2; Wed, 7 Aug 2019 20:21:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 23607113864E; Wed, 7 Aug 2019 22:21:04 +0200 (CEST) From: Markus Armbruster To: Alex =?utf-8?Q?Benn=C3=A9e?= References: <20190806151435.10740-1-armbru@redhat.com> <87blx1hr78.fsf@linaro.org> Date: Wed, 07 Aug 2019 22:21:04 +0200 In-Reply-To: <87blx1hr78.fsf@linaro.org> ("Alex =?utf-8?Q?Benn=C3=A9e=22's?= message of "Wed, 07 Aug 2019 17:32:11 +0100") Message-ID: <871rxwrakv.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Wed, 07 Aug 2019 20:21:08 +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] [PATCH v2 00/29] Tame a few "touch this, recompile the world" headers 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: , Cc: "Daniel P . =?utf-8?Q?Berrang=C3=A9?=" , Eduardo Habkost , qemu-devel@nongnu.org, Stefan Hajnoczi , Paolo Bonzini , Igor Mammedov Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Alex Benn=C3=A9e writes: > Markus Armbruster writes: > >> We have quite a few "touch this, recompile the world" headers. My >> "build everything" tree has some 6600 objects (not counting tests and >> objects that don't depend on qemu/osdep.h). Touching any of 54 >> headers triggers a recompile of more than half of them. >> >> This series reduces them to 46. > > I think this series is going the right way but there seems to be quite a > lot of breakage introduced to the cross compiles: > > https://app.shippable.com/github/stsquad/qemu/runs/939/summary/console > > I guess there is more subtlety involved when host !=3D target. I'd > recommend setting up a shippable account: > > https://wiki.qemu.org/Testing/CI/Shippable > > You can of course just run: > > make docker-test-build J=3Dn > > And watch your machine slowly grind through all the options. Thanks for the tips.