From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: revno 101399 fails to build Date: Mon, 13 Sep 2010 17:52:59 +0200 Message-ID: References: <83vd695096.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1284393251 7301 80.91.229.12 (13 Sep 2010 15:54:11 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 13 Sep 2010 15:54:11 +0000 (UTC) Cc: Andreas Schwab , joakim@verona.se, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Sep 13 17:54:08 2010 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OvBM8-0006au-Cw for ged-emacs-devel@m.gmane.org; Mon, 13 Sep 2010 17:54:08 +0200 Original-Received: from localhost ([127.0.0.1]:32984 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OvBM7-000621-L0 for ged-emacs-devel@m.gmane.org; Mon, 13 Sep 2010 11:54:07 -0400 Original-Received: from [140.186.70.92] (port=48142 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OvBLs-00061L-AC for emacs-devel@gnu.org; Mon, 13 Sep 2010 11:54:00 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OvBLO-00018c-2F for emacs-devel@gnu.org; Mon, 13 Sep 2010 11:53:52 -0400 Original-Received: from impaqm2.telefonica.net ([213.4.138.2]:56274) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OvBLN-00018T-S4 for emacs-devel@gnu.org; Mon, 13 Sep 2010 11:53:22 -0400 Original-Received: from IMPmailhost5.adm.correo ([10.20.102.126]) by IMPaqm2.telefonica.net with bizsmtp id 6Dtl1f00o2jdgqJ3MFtLBm; Mon, 13 Sep 2010 17:53:20 +0200 Original-Received: from ceviche.home ([88.12.131.221]) by IMPmailhost5.adm.correo with BIZ IMP id 6FtK1f00R4mlLJY1lFtLfn; Mon, 13 Sep 2010 17:53:20 +0200 X-Brightmail-Tracker: AAAAAA== X-TE-authinfo: authemail="monnier$movistar.es" |auth_email="monnier@movistar.es" X-TE-AcuTerraCos: auth_cuTerraCos="cosuitnetc01" Original-Received: by ceviche.home (Postfix, from userid 20848) id 9DBF56637B; Mon, 13 Sep 2010 17:52:59 +0200 (CEST) In-Reply-To: <83vd695096.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 13 Sep 2010 13:52:21 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:130060 Archived-At: >> > ... >> > In toplevel form: >> > calc/calc-help.el:30:1:Error: Required feature `calc-ext' was not provided >> >> Do you build with more that one job in parallel? In this case it can >> happen that one emacs process writes out the elc file while another one >> is reading the same (partial) file at the same time. To fix that the >> creation of the elc file need to be made atomic. > Or specify explicit dependencies in the Makefile. Or get Emacs to > generate such dependencies given the `require's. BTW, I did play with that a long time ago and the result was that it works to some extent but it's not enough: many dependencies come from autoloaded functions/macros, there are circular require-dependencies, many dependencies come from preloaded files without any `require' in sight. Maybe a more promising direction is to let the byte-compiler emit dependencies as it goes, just like gcc can do. Stefan