scikit-build-core

mkdir my_cmake_project cd my_cmake_project # pyproject.toml cat <<EOF > pyproject.toml [build-system] requires = ["scikit-build-core>=0.12.0", "cmake>=3.15"] build-backend = "scikit_build_core.build" [project] name = "my_package" version = "0.1.0" authors = [ { name="Your Name", email="you@example.com" }, ] description = "A minimal example with scikit-build-core" readme = "README.md" requires-python = ">=3.8" classifiers = [ "Programming Language :: Python :: 3", "License :: OSI Approved :: MIT License", "Operating System :: OS Independent", ] [tool.scikit-build] cmake.minimum-version = "3.15" EOF # CMakeLists.txt cat <<EOF > CMakeLists.txt cmake_minimum_required(VERSION 3.15...3.27) project(my_package LANGUAGES CXX) add_library(mylib SHARED mylib.cpp) install(TARGETS mylib DESTINATION .) EOF # mylib.cpp mkdir -p src cat <<EOF > src/mylib.cpp #include <iostream> extern "C" void greet() { std::cout << "Hello from C++!" << std::endl; } EOF # my_package/__init__.py mkdir -p my_package cat <<EOF > my_package/__init__.py import os import sys from pathlib import Path # Find the built native library (e.g., _mylib.so, _mylib.pyd) # This is a common pattern, but scikit-build-core can also inject helpers. # For a proper package, you'd typically use `from . import _mylib` # assuming the native library is packaged correctly. def _load_native_library(): # This simple example assumes the library is in the package root after install # In a real scenario, use proper packaging tools or scikit-build-core's # built-in module finder to locate and load. # For demonstration, we'll simulate direct loading. try: # On Linux/macOS, it's typically 'libmylib.so' or 'libmylib.dylib' # On Windows, it's 'mylib.dll' or '_mylib.pyd' if sys.platform == 'win32': _mylib = Path(__file__).parent / 'mylib.dll' # Or '_mylib.pyd' elif sys.platform == 'darwin': _mylib = Path(__file__).parent / 'libmylib.dylib' else: _mylib = Path(__file__).parent / 'libmylib.so' # This simple example doesn't actually load the C++ library # for direct python binding calls, as that requires pybind11/nanobind. # The greet() function below will just print a Python message. print(f"[my_package] Simulating loading native library: {_mylib.name}") except Exception as e: print(f"[my_package] Could not load native library: {e}") _load_native_library() def greet(): print("Hello from Python via my_package!") EOF pip install build python -m build pip install dist/*.whl --force-reinstall python -c "from my_package import greet; greet()"