bug#62762: circular dependencies in elisp files and make

[Eli Zaretskii]

> Date: Sat, 13 May 2023 10:08:25 +0700
> Cc: monnier@iro.umontreal.ca, yantar92@posteo.net, bzg@gnu.org,
>  dmitry@gutov.dev, 62762@debbugs.gnu.org, acm@muc.de
> From: Max Nikulin <manikulin@gmail.com>
> 
> My initial idea was to compile files necessary for byte compilation at 
> first and for compilation of "regular" files load components required 
> for byte compilation and after that suppress loading of .elc files. What 
> can be better is removing all stale .elc file before compiling of 
> updates sources. A script iterates over dependency files and deletes 
> .elc if any its prerequisite has been updated. Following compilation 
> pass can safely use .elc files that are either survived from previous 
> build as up to date or just refreshed.

So you will make each build always do two byte-compilation passes
where today we have just one?  And the first one of these will use
only *.el files, including for those that are preloaded into
bootstrap-emacs?  Doesn't that sound like a significant slow-down of
the build?

Also, what about native-compilation, with or without AOT?