Investigate Interprocedural Optimization / Link Time Code Generation for Python binaries

[thewtex]

Description

Investigate enabling Interprocedural Optimization / Link Time Code Generation for the Python binaries / C-extensions.

There is a CMake CheckIPOSupported module to help with this.

See the discussion here:

https://gitlab.kitware.com/cmake/cmake/issues/17720

CC: @N-Dekker

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[thewtex]

xref #531