From owner-freebsd-current@FreeBSD.ORG Thu Apr 1 14:09:03 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 9195416A4CE; Thu, 1 Apr 2004 14:09:03 -0800 (PST) Received: from mail.pcnet.com (mail.pcnet.com [204.213.232.4]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4F93843D2D; Thu, 1 Apr 2004 14:09:03 -0800 (PST) (envelope-from eischen@vigrid.com) Received: from mail.pcnet.com (mail.pcnet.com [204.213.232.4]) by mail.pcnet.com (8.12.10/8.12.1) with ESMTP id i31M8ptf017761; Thu, 1 Apr 2004 17:08:51 -0500 (EST) Date: Thu, 1 Apr 2004 17:08:51 -0500 (EST) From: Daniel Eischen X-Sender: eischen@pcnet5.pcnet.com To: "Jacques A. Vidrine" In-Reply-To: <20040401215308.GA79924@madman.celabo.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-current@FreeBSD.org cc: Sean McNeil cc: Oliver Eikemeier Subject: Re: nss_ldap broken 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: Thu, 01 Apr 2004 22:09:03 -0000 On Thu, 1 Apr 2004, Jacques A. Vidrine wrote: > On Thu, Apr 01, 2004 at 11:42:59AM -0500, Daniel Eischen wrote: > > On Thu, 1 Apr 2004, Jacques A. Vidrine wrote: > > > > > On Thu, Apr 01, 2004 at 10:16:25AM -0500, Daniel Eischen wrote: > > > > I think the best way is to avoid having shared libraries needlessly linked to > > > > a threads library. > > > > > > If we can guarantee that -pthread would give that behavior ``forever'', > > > then great. I guess we've come full circle (``-pthread good'' > > > ``-pthread bad, don't use it'' ``-pthread good''). :-) > > > > > > Then how does one pick an alternate threading library? Say `libmap' and > > > > Override PTHREAD_LIBS to be -lthrlibofchoice for > > the port you are building. > > Then we're back where we started. The port will build its applications > *and* libraries with a DT_NEEDED libthrlibofchoice.so.N. If something > dlopens/dlcloses the library, again we're playing with fire. No, you build the _application_ with -lthrlibofchoice, not libraries. I'm thinking someone might want mozilla with libpthread and mplayer with libthr, but both perhaps use libGL or some other thread-safe library. Sure, there are ports that have both applications and libraries, and who really cares what the applications are linked to. But if you are overriding PTHREAD_LIBS, you don't do it for a port that installs a common library that other threaded applications want to use. -- Dan Eischen