setup.py

from __future__ import print_function
import os
import re
import sys
import pkg_resources
import platform
from distutils.sysconfig import get_config_var
from distutils.version import LooseVersion
from glob import glob
from setuptools import setup, Extension

sources = (glob("src/*.cpp") + ["libmc/_client.pyx"])
include_dirs = ["include"]

COMPILER_FLAGS = [
    "-fno-strict-aliasing",
    "-fno-exceptions",
    "-fno-rtti",
    "-Wall",
    "-DMC_USE_SMALL_VECTOR",
    "-O3",
    "-DNDEBUG",
    "-std=c++17",
]


def is_installed(requirement):
    try:
        pkg_resources.require(requirement)
    except pkg_resources.ResolutionError:
        return False
    else:
        return True


# For mac, ensure extensions are built for macos 10.9 when compiling on a
# 10.9 system or above, overriding distuitls behaviour which is to target
# the version that python was built for. This may be overridden by setting
# MACOSX_DEPLOYMENT_TARGET before calling setup.py
# https://github.com/pandas-dev/pandas/issues/23424#issuecomment-446393981
if sys.platform == 'darwin' and 'MACOSX_DEPLOYMENT_TARGET' not in os.environ:
    current_system = LooseVersion(platform.mac_ver()[0])
    python_target = LooseVersion(get_config_var('MACOSX_DEPLOYMENT_TARGET'))
    if python_target < LooseVersion('10.9') and current_system >= LooseVersion('10.9'):
        os.environ['MACOSX_DEPLOYMENT_TARGET'] = '10.9'

# Resolving Cython dependency via 'setup_requires' requires setuptools >= 18.0:
# https://github.com/pypa/setuptools/commit/a811c089a4362c0dc6c4a84b708953dde9ebdbf8
setuptools_req = "setuptools >= 18.0"
if not is_installed(setuptools_req):
    import textwrap
    print(
        textwrap.dedent(
            """
        setuptools >= 18.0 is required, and the dependency cannot be
        automatically resolved with the version of setuptools that is
        currently installed (%s).

        you can upgrade setuptools:
        $ pip install -U setuptools
        """ % pkg_resources.get_distribution("setuptools").version),
        file=sys.stderr)
    exit(1)


def find_version(*file_paths):
    with open(os.path.join(*file_paths)) as fhandler:
        version_file = fhandler.read()
        version_match = re.search(r"^__VERSION__ = ['\"]([^'\"]*)['\"]", version_file, re.M)
    if version_match:
        return version_match.group(1)
    raise RuntimeError("Unable to find version string.")


setup(
    name="libmc",
    packages=["libmc"],
    version=find_version("libmc", "__init__.py"),
    license="BSD License",
    description="Fast and light-weight memcached client for C++/Python",
    author="PAN, Myautsai",
    author_email="myautsai@gmail.com",
    url="https://github.com/douban/libmc",
    keywords=["memcached", "memcache", "client"],
    long_description=open("README.rst").read(),
    classifiers=[
        "Programming Language :: C++",
        "Programming Language :: Python",
        "Programming Language :: Python :: 2.7",
        "Programming Language :: Python :: 3",
        "Programming Language :: Python :: 3.6",
        "Programming Language :: Python :: 3.7",
        "Programming Language :: Python :: 3.8",
        "Programming Language :: Python :: 3.9",
        "Programming Language :: Python :: Implementation :: CPython",
        "Development Status :: 5 - Production/Stable",
        "Operating System :: POSIX :: Linux",
        "Intended Audience :: Developers",
        "License :: OSI Approved :: BSD License",
        "Topic :: Software Development :: Libraries",
    ],
    # Support for the basestring type is new in Cython 0.20.
    setup_requires=["Cython >= 0.20"],
    ext_modules=[
        Extension(
            "libmc._client",
            sources,
            include_dirs=include_dirs,
            language="c++",
            extra_compile_args=COMPILER_FLAGS,
        )
    ],
    tests_require=[
        "pytest",
        "future",
        "numpy",
    ])