From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: More reliable byte compilation, take 45
Date: Mon, 04 Oct 2021 22:51:14 +0300
Message-ID: <831r506025.fsf@gnu.org>
References: <87sfxhm5aw.fsf@gnus.org>
 <9bffb61b-c948-c431-4fb0-bbc74e91dfe2@gmail.com>
 <p91ee90d5a5.fsf@google.com> <837des6479.fsf@gnu.org>
 <jwvee90k3jm.fsf-monnier+emacs@gnu.org>
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="18608"; mail-complaints-to="usenet@ciao.gmane.io"
Cc: cpitclaudel@gmail.com, emacs-devel@gnu.org, raman@google.com
To: Stefan Monnier <monnier@iro.umontreal.ca>
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Oct 04 21:52:13 2021
Return-path: <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
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 <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1mXU0T-0004a3-5I
	for ged-emacs-devel@m.gmane-mx.org; Mon, 04 Oct 2021 21:52:13 +0200
Original-Received: from localhost ([::1]:43456 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1mXU0R-0000Ve-Kc
	for ged-emacs-devel@m.gmane-mx.org; Mon, 04 Oct 2021 15:52:11 -0400
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40284)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>) id 1mXTzj-0008GB-6I
 for emacs-devel@gnu.org; Mon, 04 Oct 2021 15:51:27 -0400
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:35022)
 by eggs.gnu.org with esmtp (Exim 4.90_1)
 (envelope-from <eliz@gnu.org>)
 id 1mXTzh-0002UI-Tb; Mon, 04 Oct 2021 15:51:25 -0400
Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:3822
 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>)
 id 1mXTzh-0007fY-GO; Mon, 04 Oct 2021 15:51:25 -0400
In-Reply-To: <jwvee90k3jm.fsf-monnier+emacs@gnu.org> (message from Stefan
 Monnier on Mon, 04 Oct 2021 15:18:30 -0400)
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: "Emacs development discussions." <emacs-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/emacs-devel>
List-Post: <mailto:emacs-devel@gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=subscribe>
Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org
Original-Sender: "Emacs-devel"
 <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
Xref: news.gmane.io gmane.emacs.devel:276261
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/276261>

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: "T.V Raman" <raman@google.com>,  cpitclaudel@gmail.com,
>   emacs-devel@gnu.org
> Date: Mon, 04 Oct 2021 15:18:30 -0400
> 
> > Why do you assume that starting from .elc will have fewer problems
> > than starting from .el?
> 
> Converting a `.elc` file to a `.eln` file can be done by a pure function
> with no need for any extra information.

I very much doubt that.

> In contrast, converting a `.el` to a `.elc` or `.eln` requires extra
> information (typically extra files that define macros and functions used
> during macro expansion, plus `load-path` settings to find those files, or
> commands to load those files, sometimes in a particular order).

I have no reason to believe that the problems we see with native
compilation are related to these aspects.  Do you have evidence of
that?