Help test C++ polymorphic allocator support

[apjanke]

Make a formula to help the core Octave folks test out the C++ "polymorphic allocator" --enable-std-pmr-polymorphic-allocator option on macOS.

(This was requested a couple months ago; not sure how relevant it is now as of 2024-05-05.)

Progress summary

Work is on the "WIP/polly-olly" branch in the homebrew-octave-app repo.

New formula is octave-polyalloc@9.1.0. To use it, do:

brew tap octave-app/octave-app
brew install octave-polyalloc@9.1.0

This should work with a standard Homebrew installation; no other config changes needed. I think.

Currently, the octave-polyalloc@9.1.0 formula just adds the --enable-std-pmr-polymorphic-allocator option to the ./configure args. I'm not sure if other stuff is needed, since I haven't read through all the threads on the Discourse, and I'm not that familiar with C++ in the first place.

References

• Octave Discourse discussions
  • https://octave.discourse.group/t/enable-polymorphic-allocator-by-default-if-available/5132/20
  • https://octave.discourse.group/t/polymorphic-allocators-in-llvm-16/3411
  • https://octave.discourse.group/t/execution-error-on-macos-runners-with-apple-clang-15/5258/2
  • https://octave.discourse.group/t/announcing-octave-7-1-release-candidate-1-availability/2080/58
• Think this was the actual request:
  • https://octave.discourse.group/t/execution-error-on-macos-runners-with-apple-clang-15/5258/2?u=apjanke