Packaging a python wheel based on a C++ library compiled against or-tools

[npfp]

Hello,

I'm working on a C++ library that I want to expose as a python module to be run on both macOS and ubuntu and am facing some issues to build the ubuntu wheel.

What is working so far

• Using pybind11, I can generate a .so importable and runnable in python.
• Using scikit-build-core and delocate-wheel locally on my Mac I can generate and repair locally a self-contained wheel so it's importable and runnable in python.
• The CI build correctly the project and generate a wheel.

What doesn't work

Unfortunately, I can't make cibuildwheel repair the build on the ubuntu-latest nor ubuntu-22.04 CI.

When using cibuildwheel, I didn't find a way to properly install or-tools on the image with the

[tool.cibuildwheel.linux]
before-all = [
...
]

The other solution would be to rely on the cmale Fetch_Content and the installation of or-tools from source, but then I didn't find a way to make the auditwheell tool find the built libraries.

I suppose I should try something like this: pypa/auditwheel#531 (comment)

Any idea or any pointer to or-tools own cmake/ci would be much-appreciated!