From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Stephen J. Turnbull" Newsgroups: gmane.emacs.devel Subject: Re: clang/emacs/ecb/semantic Date: Sun, 02 Dec 2012 18:04:50 +0900 Message-ID: <87y5hg3jv1.fsf@uwakimon.sk.tsukuba.ac.jp> References: <20940A983D814C6192ABFF2B7A269A88@gmail.com> <87wqx42nag.fsf@yandex.ru> <87ehjcrw70.fsf@engster.org> <87hao816w4.fsf@wanadoo.es> <87hao7ioos.fsf@kuiper.lan.informatimago.com> <87zk1yhib2.fsf@kuiper.lan.informatimago.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 X-Trace: ger.gmane.org 1354439113 8974 80.91.229.3 (2 Dec 2012 09:05:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 2 Dec 2012 09:05:13 +0000 (UTC) Cc: "Pascal J. Bourguignon" , emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Dec 02 10:05:25 2012 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 1Tf5UF-0008Q0-WA for ged-emacs-devel@m.gmane.org; Sun, 02 Dec 2012 10:05:20 +0100 Original-Received: from localhost ([::1]:54372 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tf5U4-00086k-3K for ged-emacs-devel@m.gmane.org; Sun, 02 Dec 2012 04:05:08 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:37873) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tf5U2-00085g-4U for emacs-devel@gnu.org; Sun, 02 Dec 2012 04:05:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Tf5U1-0006Xo-4R for emacs-devel@gnu.org; Sun, 02 Dec 2012 04:05:06 -0500 Original-Received: from mgmt2.sk.tsukuba.ac.jp ([130.158.97.224]:46585) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tf5U0-0006RG-QX for emacs-devel@gnu.org; Sun, 02 Dec 2012 04:05:05 -0500 Original-Received: from uwakimon.sk.tsukuba.ac.jp (uwakimon.sk.tsukuba.ac.jp [130.158.99.156]) by mgmt2.sk.tsukuba.ac.jp (Postfix) with ESMTP id 14D5B9708CE; Sun, 2 Dec 2012 18:04:51 +0900 (JST) Original-Received: by uwakimon.sk.tsukuba.ac.jp (Postfix, from userid 1000) id CEAC311F6EF; Sun, 2 Dec 2012 18:04:50 +0900 (JST) In-Reply-To: X-Mailer: VM undefined under 21.5 (beta32) "habanero" b0d40183ac79 XEmacs Lucid (x86_64-unknown-linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 130.158.97.224 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:155171 Archived-At: Richard Stallman writes: > Part of the reason why clang/llvm weakens our commnity, compared > with GCC, is that the clang front ends can feed their data to > nonfree tools. Is that true, though? GCC can produce not only GIMPLE trees but also various forms of annotated RTL and dump them to files. I believe that it also accepts some of these representations as input. Is it possible to stop people from writing nonfree tools that use those representations of programs? I don't see how, unless you write a Microsoft-style EULA that restricts use as well as distribution. Ie, people can write non-free assemblers that use the assembly output of GCC, people can write non-free compilers that target the gas assembly language, and so on, all in conformance with the letter of the GPL. What am I missing?