Help to create first example with skbuild and cmake

[dagnic]

Hi all,

I've be using pybind11 since few year, but I was not the developer that set-up all the machinery at the time. Today, I would like to dig into the build system, thus I created my own minimal working example based on what I found here and here using skbuild and cmake. I am also a newbie in cmake.

My project is here.

It compiles, but I cannot manage to use the bindings within python.

I have some questions based on my observations:

• when I run pip install -v ., I can see the message below. What is the impact of this?

scikit_build_core - WARNING - Can't find a Python library, got libdir=/local/home/dagnic/miniconda3/envs/p310/lib, ldlibrary=libpython3.10.a, multiarch=x86_64-linux-gnu, masd=None

• In the pyproject.toml, what is the build-backend? Sometime I found scikit_build_core.build and sometime setuptools.build_meta.
• When pip install . terminates, I can find the files _core.cpython-310-x86_64-linux-gnu.so and libcpp_library.so in /local/home/dagnic/miniconda3/envs/p310/lib/python3.10/site-packages/scikit_build_example but the __init__.py is missing.
• If I ldd on _core.cpython-310-x86_64-linux-gnu.so, it says libcpp_library.so is not found.

You help would be very appreciated, especially if you can help me to understand this and help me to make this example working.

Thanks!