From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Neil Jerram Newsgroups: gmane.lisp.guile.devel Subject: Re: Using a linker version script Date: Fri, 14 Aug 2009 21:59:15 +0100 Message-ID: <87my621598.fsf@arudy.ossau.uklinux.net> References: <87my68r78r.fsf@gnu.org> <87zla35q8o.fsf@arudy.ossau.uklinux.net> <8763crz7gh.fsf@gnu.org> <871vne6287.fsf@arudy.ossau.uklinux.net> <871vnepjke.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1250283590 21397 80.91.229.12 (14 Aug 2009 20:59:50 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 14 Aug 2009 20:59:50 +0000 (UTC) Cc: guile-devel@gnu.org To: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Fri Aug 14 22:59:43 2009 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1Mc3sE-0003U8-Cw for guile-devel@m.gmane.org; Fri, 14 Aug 2009 22:59:43 +0200 Original-Received: from localhost ([127.0.0.1]:44528 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Mc3sD-0007Si-8s for guile-devel@m.gmane.org; Fri, 14 Aug 2009 16:59:41 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Mc3s3-0007Qd-NW for guile-devel@gnu.org; Fri, 14 Aug 2009 16:59:31 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Mc3rz-0007P0-OM for guile-devel@gnu.org; Fri, 14 Aug 2009 16:59:31 -0400 Original-Received: from [199.232.76.173] (port=53258 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Mc3rz-0007Ox-L8 for guile-devel@gnu.org; Fri, 14 Aug 2009 16:59:27 -0400 Original-Received: from mail3.uklinux.net ([80.84.72.33]:39962) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1Mc3rs-0007BF-HI; Fri, 14 Aug 2009 16:59:21 -0400 Original-Received: from arudy (host86-152-99-133.range86-152.btcentralplus.com [86.152.99.133]) by mail3.uklinux.net (Postfix) with ESMTP id 23E9F1F69DD; Fri, 14 Aug 2009 21:59:17 +0100 (BST) Original-Received: from arudy.ossau.uklinux.net (arudy [127.0.0.1]) by arudy (Postfix) with ESMTP id 4E77E38021; Fri, 14 Aug 2009 21:59:16 +0100 (BST) User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.4-2.6 X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:9114 Archived-At: ludo@gnu.org (Ludovic Court=E8s) writes: > It will give us more options on GNU (and possibly Solaris) but not on > the other platforms. So that won't affect our policy of not breaking > the ABI during a stable series. > > On GNU and Solaris, we may be able to reduce the number of applications > that have to be recompiled when a new major version comes out by: > > - having per-symbol binary compatibility info, as opposed to Libtool's > coarse-grain `-version-info'. > > - providing older versions of symbols that have changed. > > I see it essentially as an additional "safety net", and something that > GNU/* distribution maintainers will appreciate. OK, many thanks for explaining all that. I'm happy that this is useful now. > Section 3.3 of [0] contains a discussion of this. That paper is so verbose that I find it difficult to read! But thanks for the reference anyway; I know where to go now if I want to know every detail of dynamic linking. Regards, Neil