Re: extremely slow build of guile3 sources

[Michael Käppler]

Hi Federico,


> I'm building Frescobaldi flatpak using a more recent Sdk (for Qt6) and
> I noticed that building guile3 from sources requires hours (!).
> It seems that this part of the build will never end, here's an excerpt:
You're not alone. I'm currently bisecting a bug that affects the
Lilypond Windows build,
every Guile build requires ~ 2 hours on my machine.
> [...]
>
> Do you know how to reduce the build time?
You may give Jonas' patch a try:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=69314

Unfortunately, after an initial response no more reaction from the Guile
maintainers ... as usual :(

> I've looked at the build options here:
> https://gitlab.com/lilypond/lilypond/-/blob/master/release/binaries/lib/dependencies.py?ref_type=heads#L760
>
>
> and I'll try them, but I'm not sure if they are going to help with
> reducing the build time.
Surely some of them will affect build time in a measurable way, but the
main problem is the awfully slow
bytecompilation process, which AFAICT won't be affected by the build
options.

Michael