Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp1008060pxb; Thu, 4 Feb 2021 02:46:06 -0800 (PST) X-Google-Smtp-Source: ABdhPJxMAueUSUhMPoHt8jXImNiaW2GmenJnMJX/U/MoePbt2i5yYWk8L8JnxHDEjkNc0DgVJpRd X-Received: by 2002:aa7:d888:: with SMTP id u8mr5524137edq.239.1612435566500; Thu, 04 Feb 2021 02:46:06 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1612435566; cv=none; d=google.com; s=arc-20160816; b=YTR7puePY1u/TZAsXNZ7KYBlTH1CHuJHibq8dtWskeHg4re+0tqBJHPTCbHsJSqpWP mzRSOXYgqV6uQgq+4FVaZKCG8V+WNGSxt8IlCM/RBduj/k7cawmHqWQNoBRfwozKqibe gAfm8KbQMy/+y1GE73MnztLqtmpQES31sUqJ1yW/R6wEPoUGum+wffyu+hU0lMcwtRnd HWQ3w/lGXwVuGnlH+6Y1+2GKfEsDVEXAClYtURhTBnPh+z4esx8lS47yS7joWympn10J yNOVuTWla89ZBrJbBOTlgOc6FUzzZefU9cwbPT/id1ivM0/NBuMxsuWBBy/6swFlh4s+ LSnA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=2bff/hv7HuWtQTLn+bX7ooxGli6jRZcOqV7n0yceHwg=; b=Kb5bsZ27hikKPjXpR5BvinzN40KFtrEUnAK/Rx4N7n4nJZrxZ4f+y/xmIvUAKqzS7B QxyZa3egYCxTB+r1smopJ+Vkqt958IyaQXcxfbkGGkNJgZNyVPBedIdNz576CSU59+mp MaejCmyJofjukBlfiZT5WuU6ANux0iysmBkAkiwClFCbvoEexfwDc1T2PuhiFBPHT5PW yZLsuBrmsuqOCserd59XM4fo10yJjbMGYKLeWZ67l8A5iUtwxI5Oo0DCA72blXzp4rZD bwtqAvJCV55rKZl4w2FxV/dmrZ+QeXSa5jNS4E0c6z1Jc+9YLikyfBWEUk29RB8vFVxR VtTQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id yz13si2947133ejb.117.2021.02.04.02.45.40; Thu, 04 Feb 2021 02:46:06 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235346AbhBDKli (ORCPT + 99 others); Thu, 4 Feb 2021 05:41:38 -0500 Received: from wildebeest.demon.nl ([212.238.236.112]:33972 "EHLO gnu.wildebeest.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234873AbhBDKlh (ORCPT ); Thu, 4 Feb 2021 05:41:37 -0500 Received: from librem (ip-213-127-54-204.ip.prioritytelecom.net [213.127.54.204]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gnu.wildebeest.org (Postfix) with ESMTPSA id 0B649300097B; Thu, 4 Feb 2021 11:40:54 +0100 (CET) Received: by librem (Postfix, from userid 1000) id 13BE3C14A7; Thu, 4 Feb 2021 11:39:46 +0100 (CET) Date: Thu, 4 Feb 2021 11:39:46 +0100 From: Mark Wielaard To: Nick Desaulniers Cc: Masahiro Yamada , Nathan Chancellor , Andrew Morton , Sedat Dilek , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, linux-kbuild@vger.kernel.org, linux-arch@vger.kernel.org, Jakub Jelinek , Fangrui Song , Caroline Tice , Nick Clifton , Yonghong Song , Jiri Olsa , Andrii Nakryiko , Arnaldo Carvalho de Melo , Arvind Sankar , Nathan Chancellor Subject: Re: [PATCH v7 1/2] Kbuild: make DWARF version a choice Message-ID: <20210204103946.GA14802@wildebeest.org> References: <20210130004401.2528717-1-ndesaulniers@google.com> <20210130004401.2528717-2-ndesaulniers@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210130004401.2528717-2-ndesaulniers@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Spam-Flag: NO X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on gnu.wildebeest.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Nick, On Fri, Jan 29, 2021 at 04:44:00PM -0800, Nick Desaulniers wrote: > Modifies CONFIG_DEBUG_INFO_DWARF4 to be a member of a choice which is > the default. Does so in a way that's forward compatible with existing > configs, and makes adding future versions more straightforward. > > GCC since ~4.8 has defaulted to this DWARF version implicitly. And since GCC 11 it defaults to DWARF version 5. It would be better to set the default to the DWARF version that the compiler generates. So if the user doesn't select any version then it should default to just -g (or -gdwarf). Thanks, Mark