Re: Guile 64-bit Windows support, redux

[Jonas Hahnfeld via "Developers list for Guile, the GNU extensibility library" <guile-devel@gnu.org>]

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On Wed, 2024-02-07 at 15:23 -0500, Thompson, David wrote:
> On Wed, Feb 7, 2024 at 3:19 PM Jonas Hahnfeld <hahnjo@hahnjo.de> wrote:
> > 
> > On Wed, 2024-02-07 at 09:19 -0500, Thompson, David wrote:
> > > On Thu, Jan 4, 2024 at 5:40 AM Jonas Hahnfeld via Developers list for
> > > Guile, the GNU extensibility library <guile-devel@gnu.org> wrote:
> > > > 
> > > > On Tue, 2023-11-28 at 22:04 +0100, Jonas Hahnfeld wrote:
> > > > > 
> > > > > Ping, any comments on this approach? I built binaries for LilyPond
> > > > > 2.25.10 using these patches applied on top of Guile 3.0.9 and the
> > > > > result seems to work fine on Windows.
> > > > 
> > > > Another ping; meanwhile we switched to building the official binaries
> > > > of LilyPond with Guile 3.0 starting from version 2.25.11, but it would
> > > > be really great to get rid of our downstream patches...
> > > 
> > > Just chiming in to say this is a very exciting development that I had
> > > missed when the patch set was first sent!
> > > 
> > > Does this allow a fully featured Guile build or are some things still
> > > disabled? Does JIT work?
> > 
> > It's functional enough to run LilyPond (which uses quite a bit of
> > Guile) and well enough so that there is only one complaint (that I know
> > of so far) about multiplication with negative numbers not working
> > right. If I remember correctly from quickly having a look, that's
> > related to scm_integer_mul_ii using long_magnitude which doesn't quite
> > work on Windows 64-bit. For LilyPond, we disable some features (JIT,
> > threading, networking; you can look at the full build recipe here:
> > https://gitlab.com/lilypond/lilypond/-/blob/master/release/binaries/lib/dependencies.py#L628
> > ) and I don't know which of these would work or how much it would take
> > to support them.
> 
> Ah, bummer. That's a lot of disabled features.  JIT and threads are
> must-haves for my use-cases.  I guess I'll continue waiting for
> someone to figure out how to build a fully featured Guile on Windows.
> Any takers? ;)

Isn't the common wisdom that you should learn to crawl and walk before
starting to run? 😉 first we need a booting and working base of Guile
before the rest can follow at some point. For LilyPond's binaries, we
disable networking and threads on all platforms so these may just work.
Regarding the JIT, I think I disabled it right away when I started
trying to understand what the issues were, so it's possible that the
state is not actually that dire...

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