Subject: bug#55455: [macOS] Fix build when using brew's libgccjit

From: John Buckley <[email-masked]>
Date: Mon, 16 May 2022 20:00:58 +0100

> Daniel Martin <[email-masked]>

> I think this is a duplicate of bug#55173, which should be fixed already.
> Could you try to build Emacs with native compilation from the
master branch?

Yes it is as confirmed by Robert.
All is ok now on `master`. I've been on emacs-28 for a while now, probably
time to move to master.

> Eli Zaretskii <[email-masked]>

> By "now" do you mean in some recent enough version?  That is, older
> versions will still use the .so extension?

Older versions of gcc used the wrong dynamic library extension for
libgccjit on macOS. Brew on X86_64 uses the latest version. However, brew on
ARM64 is still using the .so version because it depends on an older fork of
gcc. So both need to be supported.

> Shouldn't we try both extensions?

The fix in master does this correctly.

Thanks for the comments - all resolved now.

On Mon, 16 May 2022 at 17:23, Eli Zaretskii <[email-masked]> wrote:

> > From: John Buckley <[email-masked]>
> > Date: Mon, 16 May 2022 12:38:14 +0100
> >
> > libgccjit installed via Homebrew now uses the correct .dylib dynamic
> library
> > extension on macOS.
>
> By "now" do you mean in some recent enough version?  That is, older
> versions will still use the .so extension?
>
> > This causes configure to fail because it is still
> > using the .so extension.
> >
> > The attached patch fixes the libgccjit library extension in configure.ac
>
> Shouldn't we try both extensions?
>
> Thanks.
>