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=-7.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 3489DC433E6 for ; Fri, 5 Feb 2021 21:54:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E91AB64F91 for ; Fri, 5 Feb 2021 21:54:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231274AbhBEVyJ (ORCPT ); Fri, 5 Feb 2021 16:54:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232977AbhBEVxz (ORCPT ); Fri, 5 Feb 2021 16:53:55 -0500 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70B68C06174A for ; Fri, 5 Feb 2021 13:53:15 -0800 (PST) Received: by mail-io1-xd31.google.com with SMTP id f6so8739827ioz.5 for ; Fri, 05 Feb 2021 13:53:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=z1LEn6yxJuon6YlG2B6eLh3pMTBV9iCgiAzgEn6jtMA=; b=fwz9o8BDX+Y+8h2cJdzzmdscEDH0HGDbiCkY2n+mZPL7nFIKmEjcH0P88iTFxvGhf3 c0eQbHkAtdrMg8W/zEy+fFor9Nb2ZAJL5kkO4JqAy0zfdQXjVFkWFI5dxlBysJK737tB jMPNuTDv+JvTDJf9RK0H+gdeamej8bHpHo5nYKMoD90/qRwsKtnjzlCClJ0RuluACDDz AiFkggPSL+fPR8XmAKfHayssv8LhefP673UKf+qNDf/v0/bu1MmUEK3HbkIwA1CRlwTe Ztdmwvc8GlAGYuCkcsqu9+WsCn+P6gStpaP38BXJwRBZPS+roDWB7feV0zpD/TteZFL1 VH3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=z1LEn6yxJuon6YlG2B6eLh3pMTBV9iCgiAzgEn6jtMA=; b=Aa83AO+/vAJOL3Blts77xtN4JQSiVFcfu58rIrjmDxHZcS5MLS2HEF2r4A/93f/4cM 0Fyo/LJUFi1meZC9Uk6b4R+5rTnf/S4J4ttT9+b/O8beTyfDRwtx7Uqq4F1zE0kpe91f N86/PctfgK9dvIHj+tX02Y3WQLSEr5AMk7HHkqL0jnxM3FGNFRCzs1s/j2J2xgPpebDF 72qAAnSdc7qtL3AYrWvmrtz1J1NHi+IR5WCcR3rP8AFo1mltn+oQnMxDn9tZymQgIyeA mgOkLjmK2DlA9buh/QQYNr0ERTSwLVKDmqw6nLIpb1Jk6HZsr8pHnlNMnhYtrBAIl2uC WDTg== X-Gm-Message-State: AOAM532orKr3ex8v7PA/Z7OpCf8TsWDuXqkf6KrewQ827VIZR0ZgwCP5 YErVTWq0F/bV7BlMB3kyZhs15rc62xU+L4AHsGE= X-Google-Smtp-Source: ABdhPJwBhU2UfooCRZeh6/2OU/2Kw6DWhEKOBzMDYC6e8yDhlwWD7P2KVDARcmGVgKsrt5vvT3w39BM5fpmgCqZ/cs4= X-Received: by 2002:a05:6638:251:: with SMTP id w17mr6875651jaq.138.1612561994965; Fri, 05 Feb 2021 13:53:14 -0800 (PST) MIME-Version: 1.0 References: <20210205213651.GA16907@Ryzen-5-4500U.localdomain> In-Reply-To: Reply-To: sedat.dilek@gmail.com From: Sedat Dilek Date: Fri, 5 Feb 2021 22:53:03 +0100 Message-ID: Subject: Re: Using GNU AS from a selfmade binutils v2.35.2 To: Nick Desaulniers Cc: Nathan Chancellor , Masahiro Yamada , Clang-Built-Linux ML , Linux Kbuild mailing list Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org On Fri, Feb 5, 2021 at 10:44 PM Nick Desaulniers wrote: > > On Fri, Feb 5, 2021 at 1:37 PM Nathan Chancellor wrote: > > > > It is entirely possible that '--prefix=' should always be present though: > > > > diff --git a/Makefile b/Makefile > > index f5842126e89d..409822f45bfd 100644 > > --- a/Makefile > > +++ b/Makefile > > @@ -562,10 +562,10 @@ endif > > ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) > > ifneq ($(CROSS_COMPILE),) > > CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) > > +endif > > GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) > > CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) > > GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) > > -endif > > ifneq ($(GCC_TOOLCHAIN),) > > CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) > > endif > > I'm unsure. Consider the case where I'm building with `LLVM=1 > LLVM_IAS=1 CROSS_COMPILE=aarch64-linux-gnu`, ie. no GNU binutils and > am cross compiling. In that case, we should not be setting any > --prefix or --gcc-toolchain, and yet today we are. Perhaps that is > orthogonal though? > Nathan and Nick, Guys - you are really great. Big thank-you for your feedback. But I am out - the whole today I build Linux-kernels... "My head is empty." (Kofi Anan) Today, I remembered it is exactly one year we met in Zurich @ 1st ClangBuiltLinux meeting :-). - Sedat - P.S.: I asked Matthias Klose why binutils v2.35.2 is delayed - it's ready on Git.