GNU bug report logs - #74382
`compile-first` Make rule is no longer using `load-prefer-newer`

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
Cc: gerd.moellmann <at> gmail.com, acm <at> muc.de, 74382 <at> debbugs.gnu.org
Subject: bug#74382: `compile-first` Make rule is no longer using `load-prefer-newer`
Date: Sun, 17 Nov 2024 17:37:15 +0200

> Cc: Alan Mackenzie <acm <at> muc.de>, 74382 <at> debbugs.gnu.org
> From: Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
> Date: Sun, 17 Nov 2024 18:21:36 +0300
> 
> On Sun, 2024-11-17 at 08:25 +0100, Gerd Möllmann wrote:
> > Konstantin Kharlamov <Hi-Angel <at> yandex.ru> writes:
> > 
> > > Sure, I just reproduced it after removing all `.elc` files in the
> > > repo,
> > > here how:
> > > 
> > > 1. `git checkout f2f13fa630b` (a commit from April)
> > > 2. `make -j$(nproc)` to compile. Note: you don't need to wait for
> > > build
> > > to finish, I just waited for all files under `lisp/emacs-lisp`
> > > directory to finish compilation, and then ^C'ed it.
> > > 3. `git checkout 29098a291f5` (a November commit).
> > > 4. `make -j$(nproc)`
> > 
> > This would always work if lisp/Makefile would rm the .elc files from
> > COMPILE_FIRST, right? I suspect this isn't done to speed up the build
> > in
> > the usual case, and because it's a bit difficult to automatically
> > determine if it has to done or not.
> > 
> > Does a "make clean" after the checkout in (3) make it work?
> 
> I don't think so, because `make clean` for some reason doesn't remove
> `.elc` artifacts.

And it shouldn't, because *.elc files are part of a release tarball.

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