From: Eli Zaretskii <eliz@gnu.org>
To: Konstantin Kharlamov <Hi-Angel@yandex.ru>
Cc: acm@muc.de, 74382@debbugs.gnu.org
Subject: bug#74382: `compile-first` Make rule is no longer using `load-prefer-newer`
Date: Sun, 17 Nov 2024 08:44:26 +0200 [thread overview]
Message-ID: <86jzd2we9h.fsf@gnu.org> (raw)
In-Reply-To: <46a8bf630b89755bd6edc1521390352ecc176881.camel@yandex.ru> (message from Konstantin Kharlamov on Sun, 17 Nov 2024 01:54:48 +0300)
> From: Konstantin Kharlamov <Hi-Angel@yandex.ru>
> Cc: acm@muc.de, 74382@debbugs.gnu.org
> Date: Sun, 17 Nov 2024 01:54:48 +0300
>
> > It's impractical, because we have many files with macros. Tracking
> > all of those dependencies would mean that changes in any file will
> > trigger unnecessary recompilation of many other files. If you don't
> > mind spending that time waiting for the build, just "make bootstrap"
> > every time you update from Git, and you will have that.
>
> Unless I'm missing something, the problem seems to be with one exact
> file, macroexpand.elc, and not with others.
No, that's not true. I had similar problems with basically all the
files in COMPILE_FIRST.
More importantly, what you seem to be missing is that we deliberately
play with the time stamps of the *.elc files in COMPILE_FIRST (search
for "UTC" in the Makefile), so we must not use load-prefer-newer in
this case. That is the reason why it's removed from
BYTE_COMPILE_FLAGS.
> So the algorithm is simple: if `macroexpand.el` was modified, remove
> its elc file. You don't need to track any dependencies.
How will load-prefer-newer help if this is what you do? That's the
trigger for this bug report, no?
In any case, this is not the reason why load-prefer-newer is removed
while we COMPILE_FIRST; see above.
next prev parent reply other threads:[~2024-11-17 6:44 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-16 15:11 bug#74382: `compile-first` Make rule is no longer using `load-prefer-newer` Konstantin Kharlamov
2024-11-16 16:27 ` Eli Zaretskii
2024-12-11 11:19 ` Konstantin Kharlamov
2024-12-11 15:41 ` Eli Zaretskii
2024-12-11 11:21 ` Konstantin Kharlamov
2024-11-16 16:53 ` Alan Mackenzie
2024-11-16 17:45 ` Konstantin Kharlamov
2024-11-16 18:38 ` Eli Zaretskii
2024-11-16 18:43 ` Konstantin Kharlamov
2024-11-16 20:00 ` Eli Zaretskii
2024-11-16 22:54 ` Konstantin Kharlamov
2024-11-17 6:44 ` Eli Zaretskii [this message]
2024-11-17 15:31 ` Konstantin Kharlamov
2024-11-17 7:25 ` Gerd Möllmann
2024-11-17 15:21 ` Konstantin Kharlamov
2024-11-17 15:37 ` Eli Zaretskii
2024-11-17 15:43 ` Konstantin Kharlamov
2024-11-17 15:53 ` Eli Zaretskii
2024-11-17 16:04 ` Konstantin Kharlamov
2024-11-17 16:29 ` Eli Zaretskii
2024-11-17 16:46 ` Konstantin Kharlamov
2024-11-17 17:09 ` Eli Zaretskii
2024-11-17 17:24 ` Konstantin Kharlamov
2024-11-18 4:06 ` Gerd Möllmann
2024-11-18 6:19 ` Konstantin Kharlamov
2024-11-18 10:05 ` Konstantin Kharlamov
2024-11-18 12:59 ` Eli Zaretskii
2024-11-18 13:12 ` Konstantin Kharlamov
2024-11-18 13:38 ` Eli Zaretskii
2024-12-07 11:58 ` Eli Zaretskii
2024-11-17 15:43 ` Gerd Möllmann
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