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=-7.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 C2E6BC10F27 for ; Tue, 10 Mar 2020 07:53:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 986A024673 for ; Tue, 10 Mar 2020 07:53:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FG/pPOCv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726268AbgCJHxc (ORCPT ); Tue, 10 Mar 2020 03:53:32 -0400 Received: from mail-ot1-f67.google.com ([209.85.210.67]:35335 "EHLO mail-ot1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726202AbgCJHxb (ORCPT ); Tue, 10 Mar 2020 03:53:31 -0400 Received: by mail-ot1-f67.google.com with SMTP id k26so5004818otr.2 for ; Tue, 10 Mar 2020 00:53:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=GgdUmVqrmUNl/36GqtzMjjhgnVBK/GAMaohqtRDmGJQ=; b=FG/pPOCvP74enPi9wSf34mmkt+rOQgL3BAj2YoWQpW5kFip7VgYwo0k3+Rwebid/wU nymeaInP9wYoCm2KjSJDdJXgMpsGXYdWAHEuRtxX2OFIiveBD29sMDPwwos8e1SdaBCg id52hI8VXyoburh5iVXj2zE5Pf3ID+7dmzQ4hk3lktydgEPHlHwuogpoLRiR8FbOiHeM P1AFajCtcxmmnYBeKDtOwdKHakUo7woKOqOLYllRnoGU08Yty613SkTeS3rfkC14EiXN JTTyF0OEWelksLQ5zNHSTrCwMA+aQPQmXY7wShml247XiG4EH9ICfztRGr3VZz6xJxZd GBIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=GgdUmVqrmUNl/36GqtzMjjhgnVBK/GAMaohqtRDmGJQ=; b=WSLZ2I+SwUEjE3eD07kGHrU5v++UCRr+fqAktkaNg3bhAWYq0LHLccfui9ICctLyYd 2+F18PGaxQYpuSeRmtA5BpJjecSRlmxSSir3Zr4HHuHQBiUhbUmedAElg1bcl+r5hzPg ew8s0zE/nVq5jwXVcUy0H/KUOj/bCKzXpV4u8R+0k9wApBmKtOHELpNezctNAjlcyTwE ulsQgVWBZsvSh93Cv+2Gph/abC1lTTMCiMSkAgxhoUYvPtc79BGJUMdYKhNsTJDxTt4v 7JgtAcI1RX4SOO7wbUSjqUGMtm9E63Ot3hxYPmzu/K8nUaYyHsdVZJgjmm3EL/+0ajk+ cnTA== X-Gm-Message-State: ANhLgQ3JGmp7GYTBcwcqouC/2rAKj58adhCQkJP0ThMLg8t+Hd4VcoB1 2/yipcYeibPqEFfbyUG7enNQkrEPbsw= X-Google-Smtp-Source: ADFU+vtaFdUp8HnME9x7aqVEkAdz2OoRT6o6Sme6m/HZ73EH5DroRU9iMKssnK32FQ5iukDMCn18uw== X-Received: by 2002:a9d:64d4:: with SMTP id n20mr14896160otl.193.1583826810989; Tue, 10 Mar 2020 00:53:30 -0700 (PDT) Received: from ubuntu-m2-xlarge-x86 ([2604:1380:4111:8b00::1]) by smtp.gmail.com with ESMTPSA id l15sm10976900otf.12.2020.03.10.00.53.29 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 10 Mar 2020 00:53:30 -0700 (PDT) Date: Tue, 10 Mar 2020 00:53:28 -0700 From: Nathan Chancellor To: Rob Herring , Frank Rowand Cc: devicetree@vger.kernel.org, clang-built-linux@googlegroups.com Subject: Error in dtc around -fno-common Message-ID: <20200310075328.GA17573@ubuntu-m2-xlarge-x86> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi all, GCC 10 is defaulting to -fno-common and Clang has decided to join it [1], which will completely turn our CI [2] red across the board when our compiler uprevs in the current tree's state: ld.lld: error: duplicate symbol: yylloc >>> defined at dtc-lexer.lex.c >>> scripts/dtc/dtc-lexer.lex.o:(yylloc) >>> defined at dtc-parser.tab.c >>> scripts/dtc/dtc-parser.tab.o:(.bss+0x10) clang-11: error: linker command failed with exit code 1 (use -v to see invocation) Is it possible to pick a single patch from dtc and get it fast tracked to mainline/stable so that this does not happen? It would be this one: https://git.kernel.org/pub/scm/utils/dtc/dtc.git/commit/?id=0e9225eb0dfec51def612b928d2f1836b092bc7e I have tested it and it works fine. If that is not possible, how would you recommend solving this issue? [1]: https://github.com/llvm/llvm-project/commit/3d9a0445cce368b55dc3a573bc91fe902bbb977f [2]: https://travis-ci.com/ClangBuiltLinux/continuous-integration/builds/152428887 Cheers, Nathan