From owner-svn-src-head@FreeBSD.ORG Sat Aug 21 14:33:39 2010 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 45AFB106564A; Sat, 21 Aug 2010 14:33:39 +0000 (UTC) (envelope-from rpaulo@freebsd.org) Received: from karen.lavabit.com (karen.lavabit.com [72.249.41.33]) by mx1.freebsd.org (Postfix) with ESMTP id 1B9BF8FC15; Sat, 21 Aug 2010 14:33:38 +0000 (UTC) Received: from d.earth.lavabit.com (d.earth.lavabit.com [192.168.111.13]) by karen.lavabit.com (Postfix) with ESMTP id 89EFF11B9AF; Sat, 21 Aug 2010 09:33:38 -0500 (CDT) Received: from 10.0.10.3 (54.81.54.77.rev.vodafone.pt [77.54.81.54]) by lavabit.com with ESMTP id CHQXDMRO3O74; Sat, 21 Aug 2010 09:33:38 -0500 Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: Rui Paulo In-Reply-To: <20100821142340.GU2396@deviant.kiev.zoral.com.ua> Date: Sat, 21 Aug 2010 15:33:35 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: References: <201008211348.o7LDm55c070981@svn.freebsd.org> <20100821135908.GT2396@deviant.kiev.zoral.com.ua> <64B55A11-14C3-4297-93F6-40BA74854F98@FreeBSD.org> <20100821142340.GU2396@deviant.kiev.zoral.com.ua> To: Kostik Belousov X-Mailer: Apple Mail (2.1081) Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r211561 - head/cddl/lib/drti X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Aug 2010 14:33:39 -0000 On 21 Aug 2010, at 15:23, Kostik Belousov wrote: > On Sat, Aug 21, 2010 at 03:16:49PM +0100, Rui Paulo wrote: >>=20 >> On 21 Aug 2010, at 14:59, Kostik Belousov wrote: >>=20 >>> On Sat, Aug 21, 2010 at 01:48:05PM +0000, Rui Paulo wrote: >>>> Author: rpaulo >>>> Date: Sat Aug 21 13:48:04 2010 >>>> New Revision: 211561 >>>> URL: http://svn.freebsd.org/changeset/base/211561 >>>>=20 >>>> Log: >>>> Link drti.o with a PIC version of libelf. This is needed because >>>> drti.o depends on libelf and this avoids linking every other drti.o >>>> program (namely programs with USDT probes) with libelf. >>> What is wrong with having libelf as dependency of the resulting >>> binary ? >>=20 >> The resulting binary can be a library. If I add drti.o to the libthr >> library, every other program will break because it can't find libelf >> symbols. The only way to fix it would be to rebuild every program = that >> depends on libthr and I don't want that to happen. >=20 > I do not understand this. If drti.o is added to a library, library = should > also record a dependency on libelf, i.e. be linked with it. Since you > already modifying link command to add drti.o, what is the problem to > add -lelf ? I wanted the same steps to be done in FreeBSD as in Solaris. I.e., in = Solaris you don't need to link with -lelf your program after you added = DTrace probes to it. I believe this is a good tradeoff. Regards, -- Rui Paulo