From owner-freebsd-current@FreeBSD.ORG Tue Nov 9 00:37:19 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 43D4C16A4CE; Tue, 9 Nov 2004 00:37:19 +0000 (GMT) Received: from obsecurity.dyndns.org (CPE0050040655c8-CM00111ae02aac.cpe.net.cable.rogers.com [69.194.102.143]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1ADE143D1D; Tue, 9 Nov 2004 00:37:19 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id A167C51495; Mon, 8 Nov 2004 16:40:16 -0800 (PST) Date: Mon, 8 Nov 2004 16:40:16 -0800 From: Kris Kennaway To: Colin Percival Message-ID: <20041109004016.GA75212@xor.obsecurity.org> References: <41900FE6.1060602@wadham.ox.ac.uk> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="5vNYLRcllDrimb99" Content-Disposition: inline In-Reply-To: <41900FE6.1060602@wadham.ox.ac.uk> User-Agent: Mutt/1.4.2.1i cc: kan@freebsd.org cc: current@freebsd.org Subject: Re: RFC: Building libstdc++ with -frandom-seed=RepeatabilityConsideredGood X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Tue, 09 Nov 2004 00:37:19 -0000 --5vNYLRcllDrimb99 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Nov 09, 2004 at 12:31:34AM +0000, Colin Percival wrote: > I would like to add the following line to lib/libstdc++/Makefile: >=20 > CFLAGS+=3D -frandom-seed=3DRepeatabilityConsideredGood >=20 > This is a new option in gcc 3.4 which allows a string to be specified > (in this case, the string "RepeatabilityConsideredGood") which will be > used as a random number seed in place of the usual behaviour (obtaining > a seed from the clock). Why does libstdc++ think it needs randomness in its' build? i.e. what is the impact of making it not random? Kris --5vNYLRcllDrimb99 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBkBHwWry0BWjoQKURAlE7AKCzywb6z5rrBDtuWE3NbBVTJB/WJACg/ju2 xKzpZD05IxDcHV6jcgnvzco= =VsY1 -----END PGP SIGNATURE----- --5vNYLRcllDrimb99--