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

# Convert distutils Windows platform specifiers to CMake -A arguments
PLAT_TO_CMAKE = {
    'win32': 'Win32',
    'win-amd64': 'x64',
    'win-arm32': 'ARM',
    'win-arm64': 'ARM64',
}


# 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)  # type: ignore[no-untyped-call]
        extdir = ext_fullpath.parent.resolve()

        # Using this requires trailing slash for auto-detection & inclusion of
        # auxiliary 'native' libs

        debug = int(os.environ.get('DEBUG', 0)) if self.debug is None else self.debug
        cfg = 'Debug' if debug else 'Release'

        # 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}',
            f'-DCMAKE_BUILD_TYPE={cfg}',  # not used on MSVC, but no harm
        ]
        build_args = []
        # Adding CMake arguments set as environment variable
        # (needed e.g. to build for ARM OSx on conda-forge)
        if 'CMAKE_ARGS' in os.environ:
            cmake_args += [item for item in os.environ['CMAKE_ARGS'].split(' ') if item]

        # In this example, we pass in the version to C++. You might not need to.
        cmake_args += [f'-DEXAMPLE_VERSION_INFO={self.distribution.get_version()}']  # type: ignore[attr-defined]

        if self.compiler.compiler_type != 'msvc':
            # 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  # noqa: F401

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

        else:

            # Single config generators are handled 'normally'
            single_config = any(x in cmake_generator for x in {'NMake', 'Ninja'})

            # CMake allows an arch-in-generator style for backward compatibility
            contains_arch = any(x in cmake_generator for x in {'ARM', 'Win64'})

            # Specify the arch if using MSVC generator, but only if it doesn't
            # contain a backward-compatibility arch spec already in the
            # generator name.
            if not single_config and not contains_arch:
                cmake_args += ['-A', PLAT_TO_CMAKE[self.plat_name]]

            # Multi-config generators have a different way to specify configs
            if not single_config:
                cmake_args += [
                    f'-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{cfg.upper()}={extdir}'
                ]
                build_args += ['--config', cfg]

        if sys.platform.startswith('darwin'):
            # Cross-compile support for macOS - respect ARCHFLAGS if set
            archs = re.findall(r'-arch (\S+)', os.environ.get('ARCHFLAGS', ''))
            if archs:
                cmake_args += ['-DCMAKE_OSX_ARCHITECTURES={}'.format(';'.join(archs))]

        # 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='py_hunyuan_dit',
    version='0.0.1',
    author='triplemu',
    author_email='gpu@g163.com',
    description='C++ and Python bindings',
    long_description='C++ and Python bindings',
    ext_modules=[CMakeExtension('py_hunyuan_dit')],
    cmdclass={'build_ext': CMakeBuild},
    zip_safe=False,
    extras_require=None,
    python_requires='>=3.6',
)