[Bug c++/119383] [15 Regression] Boost 1.85 lib build fail after commit r15-8011

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119383

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
I couldn't reproduce with the script as Boost failed to build (`ERROR: rule
"version.boost-build" unknown in module "build-system".`). I've dealt with b2
(the Boost build system before) and I'm not a fan :(