setup.py

import os
import re
import subprocess
import sys
from pathlib import Path

from setuptools import Extension, setup
from setuptools.command.build_ext import build_ext

# A CMakeExtension needs a sourcedir instead of a file list.
# The name must be the _single_ output extension from the CMake build.
# If you need multiple extensions, see scikit-build.
class CMakeExtension(Extension):
    def __init__(self, name: str, sourcedir: str = "") -> None:
        super().__init__(name, sources=[])
        self.sourcedir = os.fspath(Path(sourcedir).resolve())


class CMakeBuild(build_ext):
    def build_extension(self, ext: CMakeExtension) -> None:
        # Must be in this form due to bug in .resolve() only fixed in Python 3.10+
        ext_fullpath = Path.cwd() / self.get_ext_fullpath(ext.name)
        extdir = ext_fullpath.parent.resolve()

        # CMake lets you override the generator - we need to check this.
        # Can be set with Conda-Build, for example.
        cmake_generator = os.environ.get("CMAKE_GENERATOR", "")

        # Set Python_EXECUTABLE instead if you use PYBIND11_FINDPYTHON
        # EXAMPLE_VERSION_INFO shows you how to pass a value into the C++ code
        # from Python.
        cmake_args = [
            f"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={extdir}{os.sep}",
            f"-DPYTHON_EXECUTABLE={sys.executable}",
            "-DCMAKE_BUILD_TYPE=Release",
            "-DTURBOQ_PYTHON=ON",
            "-DTURBOQ_SANITIZER=OFF",
        ]
        build_args = []

        # Using Ninja-build since it a) is available as a wheel and b)
        # multithreads automatically. MSVC would require all variables be
        # exported for Ninja to pick it up, which is a little tricky to do.
        # Users can override the generator with CMAKE_GENERATOR in CMake
        # 3.15+.
        if not cmake_generator or cmake_generator == "Ninja":
            try:
                import ninja

                ninja_executable_path = Path(ninja.BIN_DIR) / "ninja"
                cmake_args += [
                    "-GNinja",
                    f"-DCMAKE_MAKE_PROGRAM:FILEPATH={ninja_executable_path}",
                ]
            except ImportError:
                pass

        # Set CMAKE_BUILD_PARALLEL_LEVEL to control the parallel build level
        # across all generators.
        if "CMAKE_BUILD_PARALLEL_LEVEL" not in os.environ:
            # self.parallel is a Python 3 only way to set parallel jobs by hand
            # using -j in the build_ext call, not supported by pip or PyPA-build.
            if hasattr(self, "parallel") and self.parallel:
                # CMake 3.12+ only.
                build_args += [f"-j{self.parallel}"]

        build_temp = Path(self.build_temp) / ext.name
        if not build_temp.exists():
            build_temp.mkdir(parents=True)

        subprocess.run(
            ["cmake", ext.sourcedir, *cmake_args], cwd=build_temp, check=True
        )
        subprocess.run(
            ["cmake", "--build", ".", *build_args], cwd=build_temp, check=True
        )


# The information here can also be placed in setup.cfg - better separation of
# logic and declaration, and simpler if you include description/version in a file.
setup(
    name="pyturboq",
    version="0.0.1",
    author="Sergey Kovalevich",
    author_email="inndie@gmail.com",
    description="TurboQ for Python",
    long_description="",
    ext_modules=[CMakeExtension("pyturboq")],
    cmdclass={"build_ext": CMakeBuild},
    zip_safe=False,
    python_requires=">=3.8",
)