From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Speeding up the bootstrap build - a quick hack. Date: Wed, 19 Jan 2022 19:03:46 +0200 Message-ID: <835yqfsln1.fsf@gnu.org> References: <83pmopunzl.fsf@gnu.org> <83y23cu9bl.fsf@gnu.org> <835yqgt0bf.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9594"; mail-complaints-to="usenet@ciao.gmane.io" Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Jan 19 18:09:17 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nAESM-000280-Sc for ged-emacs-devel@m.gmane-mx.org; Wed, 19 Jan 2022 18:09:10 +0100 Original-Received: from localhost ([::1]:33384 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nAESL-0004C8-Jm for ged-emacs-devel@m.gmane-mx.org; Wed, 19 Jan 2022 12:09:09 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:39730) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nAENI-00067E-Ik for emacs-devel@gnu.org; Wed, 19 Jan 2022 12:03:56 -0500 Original-Received: from [2001:470:142:3::e] (port=43150 helo=fencepost.gnu.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nAENC-00029J-Dh; Wed, 19 Jan 2022 12:03:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=Q4A+JWLkZIfrQi7Le8SrbmyYvdNRtdwJhxPzw9v8O60=; b=ODnFznbaaUyF +cw8zKumma0a0bu35viMsyEVNjAtskEV5TaZ1xw6xFSQwy1mmFj2q30xnd7ft+fpvmFTMluO0NvXw FcCxFkVe8RzQsjqEiDm9jVcpK/MPVjfCBNpYIxp5Rp8e2DjF2EbpTVSsJw/6L+O8odNUBlb+BqKEK F/+FD3DjIsec8no7z1PAZwrZc3TPh2pYb6go09bFHcaEACGezw+MDoKH5hbhItoyfCq6HmaNiMXr3 1TBNDEXqV6xRkdckqpM/qy1i+OUauKFIdB3d0kRVFNkvM0waL7wCzh13EwhNsVjyrdysauUa9TZ+O zjwyFqx06IgulSWlrcJ/cg==; Original-Received: from [87.69.77.57] (port=4791 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nAENC-0002t6-8w; Wed, 19 Jan 2022 12:03:50 -0500 In-Reply-To: (message from Alan Mackenzie on Wed, 19 Jan 2022 16:50:11 +0000) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:284995 Archived-At: > Date: Wed, 19 Jan 2022 16:50:11 +0000 > Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org > From: Alan Mackenzie > > The idea is to leave lisp/Makefile.in unchanged, and make all the > alterations in src/Makefile.in. > > The segment of code you cite above builds all of compile-first in one > invocation, so there's no need to worry about mixtures of interpreted > source and .elc. > > So, we duplicate that bit of code, setting the Emacs variable > no-native-compile on the command line of the first occurrence. This > will cause the byte compilation of all of compile-first. > > After this bit of new code, we use 'touch' to set the date of these new > *.elc's back to the distant past. This will ensure that these *.el's > get built again in the next step. > > The second duplicate of the old bit of make code will build the .eln's, > using the ("very old") .elc's which are still available inside Emacs. > It should do this reasonably quickly, because it is using *.elc's. Yes, that's the idea. > Yes, I agree that this approach is more elegant and surely easier to > maintain than my original hack, if it can be made to work (which it > surely can). I will look at this this evening. Thanks for the > suggestion. Thank you.