From owner-freebsd-ports@freebsd.org Thu Mar 30 20:54:21 2017 Return-Path: Delivered-To: freebsd-ports@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6DE59D26991 for ; Thu, 30 Mar 2017 20:54:21 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: from asp.reflexion.net (outbound-mail-210-15.reflexion.net [208.70.210.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1DFC212AD for ; Thu, 30 Mar 2017 20:54:20 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: (qmail 22390 invoked from network); 30 Mar 2017 20:57:03 -0000 Received: from unknown (HELO rtc-sm-01.app.dca.reflexion.local) (10.81.150.1) by 0 (rfx-qmail) with SMTP; 30 Mar 2017 20:57:03 -0000 Received: by rtc-sm-01.app.dca.reflexion.local (Reflexion email security v8.30.2) with SMTP; Thu, 30 Mar 2017 16:54:19 -0400 (EDT) Received: (qmail 23200 invoked from network); 30 Mar 2017 20:54:19 -0000 Received: from unknown (HELO iron2.pdx.net) (69.64.224.71) by 0 (rfx-qmail) with (AES256-SHA encrypted) SMTP; 30 Mar 2017 20:54:19 -0000 Received: from [192.168.1.119] (c-67-170-167-181.hsd1.or.comcast.net [67.170.167.181]) by iron2.pdx.net (Postfix) with ESMTPSA id 71EAFEC8675; Thu, 30 Mar 2017 13:54:18 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: FYI: what it takes for RAM+swap to build devel/llvm40 with 4 processors or cores and WITH__DEBUG= (powerpc64 example) From: Mark Millard In-Reply-To: <20170330175519.GA34411@spindle.one-eyed-alien.net> Date: Thu, 30 Mar 2017 13:54:17 -0700 Cc: Dimitry Andric , FreeBSD Current , FreeBSD Toolchain , FreeBSD Ports , Johannes M Dieterich , Matthew Rezny , FreeBSD PowerPC ML Content-Transfer-Encoding: 7bit Message-Id: References: <3EDEF0B7-59C5-4648-9737-6682E18645BC@dsl-only.net> <39C60316-F905-490D-B0AB-BC24D7F351A2@dsl-only.net> <7F94CE59-D2CC-4D6F-B1CD-FF3D1F8EDCE7@FreeBSD.org> <20170330170648.GA38004@FreeBSD.org> <20170330175519.GA34411@spindle.one-eyed-alien.net> To: Brooks Davis X-Mailer: Apple Mail (2.3273) X-BeenThere: freebsd-ports@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Porting software to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Mar 2017 20:54:21 -0000 On 2017-Mar-30, at 10:55 AM, Brooks Davis wrote: > P.S. Somewhat off topice, but related. FAIR WARNING: the days of > self-hosted 32-bit systems are numbered. Switching to lld from our > ancient BFD linker will probably buy us some time, but I'd be surprised > if you will be able to build LLVM+CLANG with a 2GB address space in 5 > years. The sooner people make their peace with this, the better. Yep. It fights with time preferences as well: when I tried building gcc6 "full bootstrap" via poudriere cross- builds on amd64 (4 cores/threads used) and native on a bpim3 (-mcpu=cortex-a7 with 4 cores supported by FreeBSD and 2GB if RAM) the native build was much faster as I remember. Of course once the cross build was using the gcc6 internal bootstrap compiler not much was running native cross-toolchain materials. (Building that internal bootstrap compiler did have a native-clang cross-compiler involved.) [I do not have access to server-class thread counts or RAM either. And the non-multithread stages contribute even in those contexts as well.] So I'm not looking forward to the issue from that point of view. === Mark Millard markmi at dsl-only.net