re-building cgen-generated files in GNU binutils

Hello,

I was trying to double check a change of mine [1] by actually re-
generating the various output files, rather than manually applying the
opcodes/cgen-asm.in change to all respective files. However, using
guile 2.0.14 with cgen 1.1 sources fails on one of the first few lines
in cgen/guild.scm. Presumably the two versions don't fit together. I
wasn't able to find any newer cgen sources, though. May I ask for
hints / directions towards how to accomplish the goal of re-creating
those generated files under opcodes/ in the GNU binutils source tree?

Thanks in advance, Jan

[1] https://sourceware.org/pipermail/binutils/2024-July/136053.html