Bug report

Bug description:

I initially encountered this build issue on Gentoo.

Currently the regex in Tools/jit/_llvm.py only allows strings of the form version MAJOR.MINOR.PATCH

_LLVM_VERSION_PATTERN = re.compile(rf"version\s+{_LLVM_VERSION}\.\d+\.\d+\s+")

However if LLVM was built with e.g. -DLLVM_VERSION_SUFFIX=+libcxx (as is the case on Gentoo) clang --version would return clang version 18.1.7+libcxx which is a valid version but doesn't match.

My proposed fix would be to simply allow a non-whitespace string of arbitrary length after the version, i.e.:

_LLVM_VERSION_PATTERN = re.compile(rf"version\s+{_LLVM_VERSION}\.\d+\.\d+\S*\s+")

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Linked PRs

• gh-120602: Support LLVM_VERSION_SUFFIX #120604
• [3.13] GH-120602: Support LLVM_VERSION_SUFFIX for JIT builds (GH-120604) #120768