From owner-freebsd-arm@freebsd.org Sat Jan 16 22:03:35 2021 Return-Path: Delivered-To: freebsd-arm@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 0604F4EC520; Sat, 16 Jan 2021 22:03:35 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [50.1.20.27]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "www.zefox.com", Issuer "www.zefox.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DJBrj5ysdz4sTJ; Sat, 16 Jan 2021 22:03:33 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.16.1/8.15.2) with ESMTPS id 10GM3ZDJ026921 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 16 Jan 2021 14:03:35 -0800 (PST) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.16.1/8.15.2/Submit) id 10GM3YGJ026920; Sat, 16 Jan 2021 14:03:34 -0800 (PST) (envelope-from fbsd) Date: Sat, 16 Jan 2021 14:03:34 -0800 From: bob prohaska To: Mark Millard Cc: Current FreeBSD , freebsd-arm@freebsd.org Subject: Re: Invoking -v for clang during buildworld Message-ID: <20210116220334.GA26756@www.zefox.net> References: <20210116043740.GA19523@www.zefox.net> <20210116155538.GA24259@www.zefox.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 4DJBrj5ysdz4sTJ X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of fbsd@www.zefox.net has no SPF policy when checking 50.1.20.27) smtp.mailfrom=fbsd@www.zefox.net X-Spamd-Result: default: False [-1.10 / 15.00]; RCVD_TLS_ALL(0.00)[]; ARC_NA(0.00)[]; WWW_DOT_DOMAIN(0.50)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[zefox.net]; RBL_DBL_DONT_QUERY_IPS(0.00)[50.1.20.27:from]; AUTH_NA(1.00)[]; SPAMHAUS_ZRD(0.00)[50.1.20.27:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_SPF_NA(0.00)[no SPF record]; FREEMAIL_TO(0.00)[yahoo.com]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:7065, ipnet:50.1.16.0/20, country:US]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-current,freebsd-arm]; MID_RHS_WWW(0.50)[] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Jan 2021 22:03:35 -0000 On Sat, Jan 16, 2021 at 11:17:52AM -0800, Mark Millard wrote: > > > On 2021-Jan-16, at 07:55, bob prohaska wrote: > > > On Fri, Jan 15, 2021 at 09:25:00PM -0800, Mark Millard wrote: > >> > >> On 2021-Jan-15, at 20:37, bob prohaska wrote: > >> > >>> While playing with -current on armv7 using a raspberry pi 2 v1.1 > >>> an error crops up with recent kernels while building world: > >>> > >>> ++: error: linker command failed with exit code 1 (use -v to see invocation) > >>> *** [clang.full] Error code 1 > >>> > >>> make[5]: stopped in /usr/freebsd-src/usr.bin/clang/clang > >>> > >>> How does one invoke -v in this situation? > >> > >> Going a different direction: Going to publish the build log > >> someplace? There is likely more there of interest to isolating > >> the issue(s). > >> > > I've put what I hope is a useful picture at > > http://www.zefox.net/~fbsd/rpi2/buildworld/ > > Looks to me like your -DNO_CLEAN based build is reusing one or > more files with inappropriate/incomplete contents that need to > be regenerated: there are a number of undefined symbols stopping > the linker during its attempt to build the "usr.bin/clang/clang > (all)" material. See below. > [examples snipped] > > FYI: > > I found this by noting the "all_subdir_usr.bin" below and > searching backwards for prior examples and seeing what was > after those examples. > > --- all_subdir_usr.bin --- > c++: error: linker command failed with exit code 1 (use -v to see invocation) > *** [clang.full] Error code 1 > > It never dawned that I wasn't looking at the first error message. > > The undefined symbols seem unlikely to be a voltage problem. > > The zeros are from the units for the integers not being volts > but micro volts. (Which is not the same as saying measurements > reach that scale of accuracy.) > So long as they're measured values they might be worth keeping track of. I thought maybe they were some sort of input or placeholder values. > >> I use META_MODE builds. One thing they do is record the > >> command used to try to produce each file. So in that kind > >> of context, identifying what it was trying to build allows > >> finding the related NAME.meta file and looking in it. > >> Not needed now, but worth remembering for the future. > > I see no specific evidence for a kernel problem being involved. > Agreed. The problem is the operator. Thanks for your patience! bob prohaska