setup.py

import os
import re
import subprocess
import sys

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, sourcedir=""):
 Extension.__init__(self, name, sources=[])
 self.sourcedir = os.path.abspath(sourcedir)


class CMakeBuild(build_ext):
 def build_extension(self, ext):
 extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))

 # required for auto-detection & inclusion of auxiliary "native" libs
 if not extdir.endswith(os.path.sep):
 extdir += os.path.sep

 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}",
 f"-DPYTHON_EXECUTABLE={sys.executable}",
 f"-DCMAKE_BUILD_TYPE={cfg}", # not used on MSVC, but no harm
 "-DCMAKE_POLICY_VERSION_MINIMUM=3.5",
 ]
 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]

 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:
 try:
 import ninja # noqa: F401

 cmake_args += ["-GNinja"]
 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}"]

 if not os.path.exists(self.build_temp):
 os.makedirs(self.build_temp)

 subprocess.check_call(
 ["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp
 )
 subprocess.check_call(
 ["cmake", "--build", "."] + build_args, cwd=self.build_temp
 )

desc_file = "README.md"

with open(desc_file, "r", encoding="utf-8") as fh:
 long_description = fh.read()

# 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="pycasbin",
 version="0.0.0",
 description="An authorization library that supports access control models like ACL, RBAC, ABAC in Python",
 long_description=long_description,
 long_description_content_type="text/markdown",
 url="https://github.com/casbin/casbin-cpp",
 keywords=[
 "casbin",
 "acl",
 "rbac",
 "abac",
 "auth",
 "authz",
 "authorization",
 "access control",
 "permission",
 ],
 ext_modules=[CMakeExtension("")],
 cmdclass={"build_ext": CMakeBuild},
 zip_safe=False,
 python_requires=">=3.7",
 license="Apache 2.0",
 classifiers=[
 "Programming Language :: Python :: 3.7",
 "Programming Language :: Python :: 3.8",
 "License :: OSI Approved :: Apache Software License",
 "Operating System :: OS Independent",
 ],
 data_files=[desc_file],
)