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=-6.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 6F8AEC83004 for ; Thu, 30 Apr 2020 03:05:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D9F42073E for ; Thu, 30 Apr 2020 03:05:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="uENcP0JH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726526AbgD3DFx (ORCPT ); Wed, 29 Apr 2020 23:05:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38672 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726180AbgD3DFw (ORCPT ); Wed, 29 Apr 2020 23:05:52 -0400 Received: from mail-oi1-x242.google.com (mail-oi1-x242.google.com [IPv6:2607:f8b0:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D0AEC035494; Wed, 29 Apr 2020 20:05:52 -0700 (PDT) Received: by mail-oi1-x242.google.com with SMTP id k133so3935111oih.12; Wed, 29 Apr 2020 20:05:52 -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:references:mime-version :content-disposition:in-reply-to; bh=VUvIqhD5Rxtvk/jJNTE+TX+Ap06+KNlY2PxWsoF7YmE=; b=uENcP0JHZuNMkaSj1t7het/sY4CM7iUdPdQKE7KG3ndlBgIBTx12cuMhgPg/mEsJGk qGtosYFNSpPj3UoukqC/H9FaF1cLDqpT5PAonTiMiCYEe1nxZQwBTjwaWAJRSoAZbBfr h9mXNAwimPXirORJaJ/+A6D4MuppnM1nOuEayDk9mZUkxiQAQzdak3X5xHwwSsUKdLst A5s2g2suW3ZUGQYrwyyTKJZU5OiGJPJMrIuJqs0H4RD67EjGQEE29oXDnzbnzDn37jro B4EIruWgxFf34rHjHSYDPA1+fHP4+Vqdv1yS1XYDAz4OZJC/yCMd3SVZ+GUbSmv4DfzF 8juA== 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:references :mime-version:content-disposition:in-reply-to; bh=VUvIqhD5Rxtvk/jJNTE+TX+Ap06+KNlY2PxWsoF7YmE=; b=kBPAy8sVpRdHcAA2w+x5GVY0HFHo8ULJRkhNFYm5TBgNYH8U+HjU5zJ61etA8F721r tLx4RtoIecCrXSuz7kg+x3Tfp2tE4znaB7diV4Mp9fAoNQdkq/xfA+RVTqp1i/xiEvjP hnanP2wzYpkHDRuzMvm9SJ2cctTCUzlcDcyabeNU8LUBrZ1TWSRENBJJH0Lm49I/bkKA pzqI+KAlPfsRhc6XddIyOEmXQ/agoiGMcApjRvQTwN8xEFmXeGEBh0bFf2miOmVZPH39 D2kLmAj4QpG3aSpEhFW7R4w8oEyV8tiFO9GWsM2L5mpKH9wxwDlscJbi7uzJKwSeHzWq Drnw== X-Gm-Message-State: AGi0Pua1kjkzgEZ0u1n0KRknGaZt73bJOIYtpNkwxmu8k49wyWBSu1dw YDaJ3x+IYH12PLUm6PmKlsw= X-Google-Smtp-Source: APiQypJxYT67Wj4GYwNMziw54LqhetN94i+LuGa/7Fi/4X5Mj5VAWqVhBi1y04LKBxXwUaIAMUGIJg== X-Received: by 2002:aca:53cd:: with SMTP id h196mr311956oib.104.1588215950910; Wed, 29 Apr 2020 20:05:50 -0700 (PDT) Received: from ubuntu-s3-xlarge-x86 ([2604:1380:4111:8b00::1]) by smtp.gmail.com with ESMTPSA id h65sm916166oth.34.2020.04.29.20.05.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 20:05:50 -0700 (PDT) Date: Wed, 29 Apr 2020 20:05:48 -0700 From: Nathan Chancellor To: Sedat Dilek Cc: Thomas Bogendoerfer , Masahiro Yamada , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Clang-Built-Linux ML , linux-kbuild@vger.kernel.org, Nick Desaulniers , Fangrui Song , Sami Tolvanen , Dmitry Golovin Subject: Re: [PATCH v4 1/5] kbuild: add CONFIG_LD_IS_LLD Message-ID: <20200430030548.GA3546299@ubuntu-s3-xlarge-x86> References: <20200423171807.29713-1-natechancellor@gmail.com> <20200428221419.2530697-1-natechancellor@gmail.com> <20200428221419.2530697-2-natechancellor@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 29, 2020 at 09:13:40AM +0200, Sedat Dilek wrote: > On Wed, Apr 29, 2020 at 12:14 AM Nathan Chancellor > wrote: > > > > From: Sami Tolvanen > > > > Similarly to the CC_IS_CLANG config, add LD_IS_LLD to avoid GNU ld > > specific logic such as ld-version or ld-ifversion and gain the > > ability to select potential features that depend on the linker at > > configuration time such as LTO. > > > > Signed-off-by: Sami Tolvanen > > Acked-by: Masahiro Yamada > > [nc: Reword commit message] > > Signed-off-by: Nathan Chancellor > > Tested-by: Sedat Dilek > Reviewed-by: Sedat Dilek > > Testing on Debian/testing AMD64 (since Linux v5.3): > #1: LLVM/Clang/LLD version 9.0 and 10.0 > #2: Debian's GCC 9.3 with ld.lld-9 and ld.lld-10 > > I am linking my Linux-kernels with ld.lld despite there are issues - > then check with ld.bfd. What issues are these? Have they been reported? Cheers, Nathan > - Sedat - > > > --- > > > > v3 -> v4: > > > > * No changes. > > > > v2 -> v3: > > > > * Add Masahiro's ack. > > > > v1 -> v2: > > > > * No changes. > > > > Sami, please scream if you are unhappy with how I worded this commit. > > > > init/Kconfig | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/init/Kconfig b/init/Kconfig > > index 9e22ee8fbd75e..c15ee42b82726 100644 > > --- a/init/Kconfig > > +++ b/init/Kconfig > > @@ -23,6 +23,9 @@ config LD_VERSION > > config CC_IS_CLANG > > def_bool $(success,$(CC) --version | head -n 1 | grep -q clang) > > > > +config LD_IS_LLD > > + def_bool $(success,$(LD) -v | head -n 1 | grep -q LLD) > > + > > config CLANG_VERSION > > int > > default $(shell,$(srctree)/scripts/clang-version.sh $(CC)) > > > > base-commit: 96c9a7802af7d500a582d89a8b864584fe878c1b > > -- > > 2.26.2 > >