From owner-freebsd-security@FreeBSD.ORG  Mon Oct 24 10:46:17 2005
Return-Path: <owner-freebsd-security@FreeBSD.ORG>
X-Original-To: freebsd-security@FreeBSD.ORG
Delivered-To: freebsd-security@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 6ED2016A41F;
	Mon, 24 Oct 2005 10:46:17 +0000 (GMT)
	(envelope-from cracauer@schlepper.zs64.net)
Received: from schlepper.zs64.net (schlepper.zs64.net [212.12.50.230])
	by mx1.FreeBSD.org (Postfix) with ESMTP id CCBDB43D53;
	Mon, 24 Oct 2005 10:46:16 +0000 (GMT)
	(envelope-from cracauer@schlepper.zs64.net)
Received: from schlepper.zs64.net (schlepper [212.12.50.230])
	by schlepper.zs64.net (8.13.3/8.12.9) with ESMTP id j9OAk5IY044563;
	Mon, 24 Oct 2005 12:46:05 +0200 (CEST)
	(envelope-from cracauer@schlepper.zs64.net)
Received: (from cracauer@localhost)
	by schlepper.zs64.net (8.13.3/8.12.9/Submit) id j9OAk5Zk044562;
	Mon, 24 Oct 2005 06:46:05 -0400 (EDT) (envelope-from cracauer)
Date: Mon, 24 Oct 2005 06:46:05 -0400
From: Martin Cracauer <cracauer@cons.org>
To: Peter Jeremy <PeterJeremy@optushome.com.au>
Message-ID: <20051024064605.A44523@cons.org>
References: <20051023105230.GA55181@frontfree.net>
	<20051023232935.GC602@dragon.NUXI.org>
	<20051024080811.GF39882@cirb503493.alcatel.com.au>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
In-Reply-To: <20051024080811.GF39882@cirb503493.alcatel.com.au>;
	from PeterJeremy@optushome.com.au on Mon, Oct 24, 2005 at
	06:08:11PM +1000
X-Mailman-Approved-At: Mon, 24 Oct 2005 14:18:34 +0000
Cc: freebsd-security@FreeBSD.ORG, delphij@delphij.net, developers@FreeBSD.ORG,
	obrien@FreeBSD.ORG
Subject: Re: Is it feasible to cross-build compat5x binary?
X-BeenThere: freebsd-security@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "Security issues \[members-only posting\]"
	<freebsd-security.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>, 
	<mailto:freebsd-security-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-security>
List-Post: <mailto:freebsd-security@freebsd.org>
List-Help: <mailto:freebsd-security-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>, 
	<mailto:freebsd-security-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 24 Oct 2005 10:46:17 -0000

Peter Jeremy wrote on Mon, Oct 24, 2005 at 06:08:11PM +1000: 
> On Sun, 2005-Oct-23 16:29:35 -0700, David O'Brien wrote:
> >We should no trust cross built libraries for this purpose at this time.
> >We really don't know how identical the results will be to being natively
> >built.
> 
> At some stage, we need to validate our cross-build chain with cmp(1).

ELF object files are timestamped.  But there's some elf-cmp out there.

Martin
-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer@cons.org>   http://www.cons.org/cracauer/
FreeBSD - where you want to go, today.      http://www.freebsd.org/