From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Git help please - checking out old commit doesn't find lib/gnulib.mk.in. Date: Sun, 12 Nov 2017 20:58:44 -0500 Message-ID: References: <20171112180959.GB20916@ACM> <83inefmjuh.fsf@gnu.org> <20171112200651.GC20916@ACM> <83d14nmebn.fsf@gnu.org> <20171112215547.GD20916@ACM> <87po8nt5rt.fsf@wanadoo.es> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1510538345 559 195.159.176.226 (13 Nov 2017 01:59:05 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 13 Nov 2017 01:59:05 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Nov 13 02:59:00 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eE41b-0008Av-MK for ged-emacs-devel@m.gmane.org; Mon, 13 Nov 2017 02:58:59 +0100 Original-Received: from localhost ([::1]:52087 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eE41h-0001ui-Fz for ged-emacs-devel@m.gmane.org; Sun, 12 Nov 2017 20:59:05 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54738) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eE41b-0001ud-G5 for emacs-devel@gnu.org; Sun, 12 Nov 2017 20:59:00 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eE41Y-000618-E0 for emacs-devel@gnu.org; Sun, 12 Nov 2017 20:58:59 -0500 Original-Received: from [195.159.176.226] (port=33057 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eE41Y-00060l-77 for emacs-devel@gnu.org; Sun, 12 Nov 2017 20:58:56 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1eE41K-0007U2-Oq for emacs-devel@gnu.org; Mon, 13 Nov 2017 02:58:42 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 13 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:Da0HmEmJO+l2r/rrDv7VeX4MWcg= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:220124 Archived-At: >> Why can Emacs not have a reliable way of cleaning up configuration and >> build products (and _only_ these) such that a clean build can then be >> done? > How the Emacs build system could know the products generated of the > future? Because this is the problem you faced. We don't need to solve this impossible problem. Instead we just need to make a rule in GNUmakefile (which is not autoconf-generated contrarily to Makefile) to remove all the auto-generated files of the present. Stefan