bug#57015: 29.0.50; macOS: libgccjit was not found: Homebrew libgccjit 12.1.0

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Sun, 7 Aug 2022 04:57:57 -0500
> Cc: 57015@debbugs.gnu.org
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Is it really a problem to use only libgccjit 12.0 and older for the
> > release branch?
> 
> I'm afraid that it's a serious problem.
> 
> Homebrew has an eager upgrade policy akin to a rolling release
> distribution.  AFAIU, every macOS user running Homebrew will be unable
> to build Emacs after having run "brew upgrade", which many users do
> routinely.

I'm sorry, but either someone will have to come up with a _very_ safe
fix, or users of macOS will need to delay upgrading or live with Emacs
27 (or patch their sources manually on their own risk).