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=-4.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 159CCC432BE for ; Mon, 23 Aug 2021 00:26:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EFDA06120A for ; Mon, 23 Aug 2021 00:26:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234406AbhHWA1P (ORCPT ); Sun, 22 Aug 2021 20:27:15 -0400 Received: from conssluserg-02.nifty.com ([210.131.2.81]:25271 "EHLO conssluserg-02.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230448AbhHWA1O (ORCPT ); Sun, 22 Aug 2021 20:27:14 -0400 Received: from mail-pg1-f177.google.com (mail-pg1-f177.google.com [209.85.215.177]) (authenticated) by conssluserg-02.nifty.com with ESMTP id 17N0QIfT014048; Mon, 23 Aug 2021 09:26:18 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conssluserg-02.nifty.com 17N0QIfT014048 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1629678378; bh=kD/hh9H5i475+vNQOw2q7d4U+ruJtXyu/WdPhffFiIQ=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=ERC7DH0c3u0T9rlC6EVa8JEEFPy7GgBAADuYG908j63d9ukiAZeEvDqKph3N7PvUx Yz8W46umRaiBfohrhvhHLiEgw8eTrvgqsOmwc/QGfphNyBNP1ZJzQ8S8aQx09u6ZTy cHY5asce0Ki+XWqFmvb8DExqZxtR6XEJF5RyHNG+fCGHqhBov3/dN2/4InP7vkzte8 y3d55ty7AFOsx9wpa5/tN1m7heG2vHNR5InJoknq0yECVq5ySCvoqNaqcf1CalFuXi +1zrWFGlBx/JhTMI3GdW8gceTxAdmauZdC+fKB0tUJ/szEVI1uDwpzn0JeDIGhv/hm LXRwNQAihrdfw== X-Nifty-SrcIP: [209.85.215.177] Received: by mail-pg1-f177.google.com with SMTP id x4so15047383pgh.1; Sun, 22 Aug 2021 17:26:18 -0700 (PDT) X-Gm-Message-State: AOAM530QgHH6e0dwHZXR5x7dkLZm7ZBdjuSWQKMJUvUXS5Ux6Okc8Lts gGl8Jr/T2lLzDIeyK52NUv72FSHUrVXQn716ia4= X-Google-Smtp-Source: ABdhPJz9fdEOOqgxK/uG/yR0iY62D3VpAQPiB0vaUeGb2ebMdEye9FmADojzm4kUBwC+k54pQLSZkyHuoz7BBa1e1O8= X-Received: by 2002:a63:dd51:: with SMTP id g17mr29573641pgj.47.1629678377713; Sun, 22 Aug 2021 17:26:17 -0700 (PDT) MIME-Version: 1.0 References: <20210820092816.2858fac8@canb.auug.org.au> In-Reply-To: <20210820092816.2858fac8@canb.auug.org.au> From: Masahiro Yamada Date: Mon, 23 Aug 2021 09:25:41 +0900 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: linux-next: build warning after merge of the kbuild tree To: Stephen Rothwell Cc: Linux Kernel Mailing List , Linux Next Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 20, 2021 at 8:28 AM Stephen Rothwell wrote: > > Hi all, > > After merging the kbuild tree, today's linux-next build (x86_64 > allmodconfig) produced this warning: > > arch/x86/entry/vdso/Makefile:135: FORCE prerequisite is missing > arch/x86/entry/vdso/Makefile:135: FORCE prerequisite is missing > arch/x86/entry/vdso/Makefile:135: FORCE prerequisite is missing > > Exposed by commit > > 0fc7db58e2a6 ("kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk") > > Not sure why we need 3 of these :-( This is a pattern rule, which generates vdso64.so, vdso32.so, and vdsox32.so The warning is produced as a side-effect of the recipe. That is why 3 warnings. Otherwise, I do not know how to implement it. BTW, a fix for x86 Makefile exists in the patchwork. https://lore.kernel.org/patchwork/patch/1478798/ -- Best Regards Masahiro Yamada