GNU bug report logs - #55109
Emacs build fails: Symbol’s function definition is void: byte-compile-set-symbol-position

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Message #20 received at 55109 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 55109 <at> debbugs.gnu.org, Vincent Lefevre <vincent <at> vinc17.net>
Subject: Re: bug#55109: Emacs build fails: Symbol’s
 function definition is void: byte-compile-set-symbol-position
Date: Mon, 25 Apr 2022 15:40:12 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> We don't really have any dependency tracking for Emacs Lisp files.  It
> would be a great addition, if someone develops that, I think, because
> such problems are quite frequent during active development.

It's a complicated problem, though -- basically if any file that defines
a macro/variable changes, then all .elc files that depend on it should
be recompiled.  Which means that if you make a trivial edit in files.el,
then that would trigger a compilation of absolutely all .elc files,
which would make development pretty much impossible.

We would have to arrange the Lisp sources in a very different way to
dependency tracking to be practical.

So instead people who pull Emacs have to say "make bootstrap" once in a
while.  It'd be nice if it were possible to have the makefile output
"Did you try 'make boostrap'?" if it fails, but that's apparently not
something make allows.

Anyway, closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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