Re: Updated GnuTLS from MSYS2 and Emacs's `dynamic-library-alist'

[Alexander Shukaev <haroogan@gmail.com>]

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OK, I see the relevant bit here [1], thanks.

[1] https://github.com/emacs-mirror/emacs/commit/dc79845

On Thu, Apr 30, 2015 at 5:47 PM, Eli Zaretskii <eliz@gnu.org> wrote:

> > Date: Thu, 30 Apr 2015 17:06:51 +0200
> > From: Alexander Shukaev <haroogan@gmail.com>
> > Cc: Andy Moreton <andrewjmoreton@gmail.com>, emacs-devel <
> emacs-devel@gnu.org>
> >
> > ​As I understand it​
> >
> > (gnutls
> > "libgnutls-
> > ​30​
> > .dll" "libgnutls-28.dll" "libgnutls-26.dll")
> >
> > makes loading of GnuTLS 3.4 completely optional, i.e. people may still
> have
> > "libgnutls-28.dll" and use it instead. So why not backport this commit
> then?
>
> That's not what needs to be done.  Emacs compiled for GnuTLS versions
> before 3.4.0 is incompatible with the GnuTLS DLL versions 3.4.0.  The
> new ABI introduces a binary incompatibility, so you need to recompile
> Emacs with the newer GnuTLS headers to be able to load the 3.4.0 DLL.
> And if you recompile Emacs like that, it will be incompatible with the
> older DLLs.  Trying to load incompatible DLLs will likely cause a
> crash.
>
> So the change you need to do is more than just the one you show.
>
> Once again, I don't recommend that, if you are building a binary for
> more than just your own consumption.  But that's up to you.
>

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