From owner-freebsd-current@FreeBSD.ORG Fri Dec 9 15:36:28 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from lo0.su (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by hub.freebsd.org (Postfix) with ESMTP id 8A2A9106566B; Fri, 9 Dec 2011 15:36:27 +0000 (UTC) (envelope-from ru@freebsd.org) Date: Fri, 9 Dec 2011 19:42:17 +0400 From: Ruslan Ermilov To: Erik Cederstrand Message-ID: <20111209154217.GD91429@lo0.su> References: <20111209133722.GC91429@lo0.su> <4EFFCC14-944D-48A5-BB5A-CC667159F8BD@cederstrand.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4EFFCC14-944D-48A5-BB5A-CC667159F8BD@cederstrand.dk> Cc: FreeBSD Current Subject: Re: Deterministic builds X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Fri, 09 Dec 2011 15:36:28 -0000 On Fri, Dec 09, 2011 at 03:25:40PM +0100, Erik Cederstrand wrote: > Den 09/12/2011 kl. 14.37 skrev Ruslan Ermilov: > > > On Fri, Dec 09, 2011 at 12:16:39PM +0100, Erik Cederstrand wrote: > >> I've been working on a project to make it possible to produce deterministic > >> builds with FreeBSD. By this I mean building a FreeBSD distribution twice > >> from the same code base and having all files in the two distributions match > >> by md5 sum. Currently, this is not the case. > > [...] > >> I'd be very grateful for any comments on the approach and the patch. > > > > The idea is not new. Setting CROSS_BUILD_TESTING during the buildworld > > addressed similar issues at a time I wrote it, to compare cross builds > > to native ones, with several exceptions. I haven't tested it for years, > > so things might have changed, but it's still a good idea to give it a > > try. > > I can't see that CROSS_BUILD_TESTING does anything in current other > than adding TARGET and TARGET_ARCH to OBJTREE in src/Makefile.inc1? Take a look at src/tools/build/Makefile. Last time I checked (July 19, 2005) there were only the following diffs when verifying cross-builds (verifying included doing a native build and binary comparing it with a cross-build made on i386/amd64): : *: : /usr/lib/libsupc++.a:vec.o symbols with generated names : /usr/lib/libobjc.a:NXConstStr.o : /usr/lib/libobjc.a:Object.o : /usr/lib/libobjc.a:Protocol.o : : i386 <- amd64 : /usr/sbin/isdn* timestamp (__TIME__) (i386 only) : : sparc64 <-> amd64 : /usr/share/misc/magic*.mgc mkmagic not endianness clean -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer