From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32587 invoked by alias); 12 Jul 2013 14:52:10 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 32469 invoked by uid 89); 12 Jul 2013 14:52:07 -0000 X-Spam-SWARE-Status: No, score=-3.8 required=5.0 tests=BAYES_00,KHOP_THREADED,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_NO,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.1 Received: from plane.gmane.org (HELO plane.gmane.org) (80.91.229.3) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Fri, 12 Jul 2013 14:52:06 +0000 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1UxehX-00009i-V0 for cygwin@cygwin.com; Fri, 12 Jul 2013 16:52:03 +0200 Received: from c-69-140-37-22.hsd1.md.comcast.net ([69.140.37.22]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 12 Jul 2013 16:52:03 +0200 Received: from schulman.andrew by c-69-140-37-22.hsd1.md.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 12 Jul 2013 16:52:03 +0200 To: cygwin@cygwin.com From: Andrew Schulman Subject: Re: libargp: argp_program_version does not work Date: Fri, 12 Jul 2013 15:36:00 -0000 Message-ID: References: <000001ce7e08$2b866830$82933890$%fedin@samsung.com> <4q4ut8had25hqmo8b0752i8asuv6ism2qh@4ax.com> <002901ce7f0a$9da99420$d8fcbc60$%fedin@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Archive: encrypt X-SW-Source: 2013-07/txt/msg00252.txt.bz2 > Hello! > > > int main (int argc, char **argv) > > { > > argp_program_version = version; > > argp_program_bug_address = bug_address; > > > > argp_parse (&argp, argc, argv, 0, 0, 0); } > > > > /*** End modified argp example #2 ***/ > > > > If you compile the above version, you'll see that the --version option > > and bug tracker text are available. > > > > I'm sure this problem is familiar to developers and users of shared > > libraries, but I had forgotten it. I'll add a note to the Cygwin > > README file, to help all of us remember it next time. > > Yes, i know this. But looks like nobody actually follows your way, because > under Linux simple redefinition perfectly works. > Of course we could fix every program, but i have an idea how to make the > original Linux code working: > 1. Inside DLL we should rename this variables somehow > 2. Inside libargp.a.dll we should have a constructor function (with > __attribute__((constructor))) which assigns variables inside DLL with > contents of argp_program_version and argp_program_bug_address. > 3. Also inside libargp.a.dll we should have default definitions of these > variables with NULL contents. > > This way code modification would not be required any more. > I'll try to implement this when have more time. Okay, well I agree that this sounds like a good solution. For now you have a workaround, and I'll be glad to consider a patch if you submit one. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple