bug#58318: 28.2; Emacs installed from package won't work with MinGW

[Eli Zaretskii]

> From: Corwin Brust <corwin@bru.st>
> Date: Thu, 6 Oct 2022 08:09:16 -0500
> Cc: Bartosz Bubak <bartosz.bubak@gmail.com>, 58318@debbugs.gnu.org
> 
> If, per the configuration reported when generating this bug report,
> Emacs can see libgccjit is not available, then should Emacs still be
> trying to native compile org-entitles in this case?

No, it should disable that in startup.el:

    (when (featurep 'native-compile)
      (unless (native-comp-available-p)
        ;; Disable deferred async compilation and trampoline synthesis
        ;; in this session.  This is necessary if libgccjit is not
        ;; available on MS-Windows, but Emacs was built with
        ;; native-compilation support.
        (setq native-comp-deferred-compilation nil
              comp-enable-subr-trampolines nil))

But libgccjit DLL _is_ available in this case, so maybe the test
doesn't discover the problem.