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