Re: Org mode and Emacs (was: Convert README.org to plain text README while installing package)

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@gmail.com>
> Cc: rms@gnu.org,  theophilusx@gmail.com,  monnier@iro.umontreal.ca,
>   acm@muc.de,  emacs-devel@gnu.org
> Date: Tue, 14 Jun 2022 19:18:57 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > An optimized build of Emacs produces org.texi in about 30 to 40
> > seconds here, and that is also quite annoying for a production build.
> > Lars recently made significant changes in our build scripts and
> > support code because he didn't like much shorter delays.  We build
> > Emacs many times a week, so these delays add up.
> 
> Is there any practical reason to re-build Org manual every time you
> rebuild Emacs, even if the source did not change?

No, and it doesn't happen unless I bootstrap.

> I though that make would skip building unchanged sources.

Indeed, it does (except as part of "make bootstrap", which rebuilds
everything).  But even without a bootstrap, when org.org changes,
building several branches needs to process it once per branch.