From owner-freebsd-current@freebsd.org Thu May 31 22:14:20 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 13690F76951 for ; Thu, 31 May 2018 22:14:20 +0000 (UTC) (envelope-from FreeBSD@shaneware.biz) Received: from ipmail03.adl6.internode.on.net (ipmail03.adl6.internode.on.net [150.101.137.143]) by mx1.freebsd.org (Postfix) with ESMTP id 06B928347F; Thu, 31 May 2018 22:14:18 +0000 (UTC) (envelope-from FreeBSD@shaneware.biz) Received: from 124-169-238-31.dyn.iinet.net.au (HELO leader.local) ([124.169.238.31]) by ipmail03.adl6.internode.on.net with ESMTP; 01 Jun 2018 07:39:08 +0930 Subject: Re: ``make buildkernel'' fails when /usr/obj is empty To: Warner Losh , Dimitry Andric Cc: Benjamin Kaduk , Gary Jennejohn , FreeBSD Current References: <20180531095222.399e7a37@ernst.home> <20180531095850.5845fd7a@ernst.home> <20180531160406.GD27985@kduck.kaduk.org> <32C087A4-1B67-4694-B769-16A347D4804E@FreeBSD.org> From: Shane Ambler Message-ID: Date: Fri, 1 Jun 2018 07:39:06 +0930 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-AU Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 May 2018 22:14:20 -0000 On 01/06/2018 03:41, Warner Losh wrote: > On Thu, May 31, 2018 at 11:47 AM, Dimitry Andric wrote: > >> On 31 May 2018, at 18:04, Benjamin Kaduk wrote: >>> >>> On Thu, May 31, 2018 at 09:58:50AM +0200, Gary Jennejohn wrote: >>>> On Thu, 31 May 2018 09:52:22 +0200 >>>> Gary Jennejohn wrote: >>>> >>>>> There's something totally screwy about trying to build a kernel when >>>>> /usr/obj is not populated. >>>>> >>>>> I ran ``make clean'' in /usr/src and then ``make buildkernel''. This >>>>> fails with >>>>> make[2]: "/usr/src/sys/conf/kern.pre.mk" line 125: amd64 kernel >>>>> requires linker ifunc support >>>>> >>>>> This is total BS because >>>>> >>>>> /usr/bin/ld --version >>>>> LLD 6.0.0 (FreeBSD 326565-1200002) (compatible with GNU linkers) >>>>> >>>>> which is exactly what bsd.linker.mk is looking for to set ifunc. >>>>> >>>>> If I do this: >>>>> >>>>> mkdir -p /usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/bin >>>>> cp /usr/bin/ld /usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/bin >>>>> >>>>> the buildkernel then succeeds. >>>>> >>>>> Considering that (reformatted output from make) >>>>> >>>>> PATH=/usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/sbin: >>>>> /usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/bin: >>>>> /usr/obj/usr/src/amd64.amd64/tmp/legacy/bin: >>>>> /usr/obj/usr/src/amd64.amd64/tmp/usr/sbin: >>>>> /usr/obj/usr/src/amd64.amd64/tmp/usr/bin: >>>>> /sbin:/bin:/usr/sbin:/usr/bin >>>>> >>>>> it seems like /usr/bin/ld should be found by bsd.linker.mk and no >>>>> error should be reported. >>>>> >>>> >>>> OK, it seems that ``make clean'' does not remove the contents of >>>> /usr/obj/usr/src/amd64.amd64/tmp/legacy. If I delete everything >>>> under /usr/obj then ``make buildkernel'' works. >>>> >>>> Still, it seems pretty strange to me to make building a kernel >>>> depend on some random junk which is left laying around under >>>> /usr/obj. >>> >>> Whatever happened to the "run buildworld or kernel-toolchain before >>> buildkernel" requirement? >> >> That is still a requirement, yes. Otherwise, you might have outdated >> toolchain components are in your /usr/obj. >> > > Usually you can get away without doing that, and now that clang is the > toolchain that's rebuilt (and that's not fast) people try to get away with > it more and more... There is WITH_SYSTEM_COMPILER to not bootstrap if possible. -- FreeBSD - the place to B...Software Developing Shane Ambler