From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: Subsystem initialization functions in normal binary Date: Mon, 12 Jan 2015 23:43:28 -0800 Organization: UCLA Computer Science Department Message-ID: <54B4CCA0.8030300@cs.ucla.edu> References: <54B3A91C.5060404@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1421135036 15474 80.91.229.3 (13 Jan 2015 07:43:56 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 13 Jan 2015 07:43:56 +0000 (UTC) To: Dmitry Antipov , Emacs development discussions Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jan 13 08:43:50 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YAw8i-0006NO-QO for ged-emacs-devel@m.gmane.org; Tue, 13 Jan 2015 08:43:48 +0100 Original-Received: from localhost ([::1]:37737 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YAw8h-0001Qk-Vj for ged-emacs-devel@m.gmane.org; Tue, 13 Jan 2015 02:43:47 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51056) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YAw8U-0001Qf-E3 for emacs-devel@gnu.org; Tue, 13 Jan 2015 02:43:35 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YAw8Q-0002fo-D5 for emacs-devel@gnu.org; Tue, 13 Jan 2015 02:43:34 -0500 Original-Received: from smtp.cs.ucla.edu ([131.179.128.62]:39593) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YAw8Q-0002fg-7l for emacs-devel@gnu.org; Tue, 13 Jan 2015 02:43:30 -0500 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id 11746A600D3; Mon, 12 Jan 2015 23:43:29 -0800 (PST) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Original-Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id o5h05mKqoOz2; Mon, 12 Jan 2015 23:43:28 -0800 (PST) Original-Received: from [192.168.1.9] (pool-173-55-11-52.lsanca.fios.verizon.net [173.55.11.52]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id C2640A60025; Mon, 12 Jan 2015 23:43:28 -0800 (PST) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 In-Reply-To: <54B3A91C.5060404@yandex.ru> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 131.179.128.62 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:181206 Archived-At: I'm of two minds about this. On the one hand, it simplifies the C source code and makes 'emacs' a tad smaller. On the other, it's a bit tricky and I worry about how portable it is. Suppose, for example, GCC supports __attribute__ ((section (".once"))) but 'strip' does not support -R? Is it possible for unexelf.c to do the strip, rather than to rely on an external 'strip -R' command? If we use the idea, it might be helpful to use '#define ATTRIBUTE_SECTION_ONCE __attribute__ ((section (".once")))' (or '#define ATTRIBUTE_SECTION_ONCE /* empty */' on hosts that don't support the attribute), and then use ATTRIBUTE_SECTION_ONCE elsewhere.