将 numpy 的包含目录从 Setuptools 传递给 Cmake

Pass numpy's include dir to Cmake from Setuptools

我有一个 C++ 库,我已经使用 Pybind11 成功地暴露给 python。

CmakeLists.txt 文件中,我添加了这样的 numpy include:

include_directories("C:\Python37\Lib\site-packages\numpy\core\include")

这可行,但不受欢迎。我想从我的 setup.py 文件中传递 numpy 包含目录。

我的 setup.py 文件看起来很像 this one:

import os
import re
import sys
import sysconfig
import platform
import subprocess

from distutils.version import LooseVersion
from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext


class CMakeExtension(Extension):
    def __init__(self, name, sourcedir=''):
        Extension.__init__(self, name, sources=[])
        self.sourcedir = os.path.abspath(sourcedir)


class CMakeBuild(build_ext):
    def run(self):
        try:
            out = subprocess.check_output(['cmake', '--version'])
        except OSError:
            raise RuntimeError(
                "CMake must be installed to build the following extensions: " +
                ", ".join(e.name for e in self.extensions))

        if platform.system() == "Windows":
            cmake_version = LooseVersion(re.search(r'version\s*([\d.]+)',
                                         out.decode()).group(1))
            if cmake_version < '3.1.0':
                raise RuntimeError("CMake >= 3.1.0 is required on Windows")

        for ext in self.extensions:
            self.build_extension(ext)

    def build_extension(self, ext):
        extdir = os.path.abspath(
            os.path.dirname(self.get_ext_fullpath(ext.name)))
        cmake_args = ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=' + extdir,
                      '-DPYTHON_EXECUTABLE=' + sys.executable]

        cfg = 'Debug' if self.debug else 'Release'
        build_args = ['--config', cfg]

        if platform.system() == "Windows":
            cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(
                cfg.upper(),
                extdir)]
            if sys.maxsize > 2**32:
                cmake_args += ['-A', 'x64']
            build_args += ['--', '/m']
        else:
            cmake_args += ['-DCMAKE_BUILD_TYPE=' + cfg]
            build_args += ['--', '-j2']

        env = os.environ.copy()
        env['CXXFLAGS'] = '{} -DVERSION_INFO=\"{}\"'.format(
            env.get('CXXFLAGS', ''),
            self.distribution.get_version())
        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, env=env)
        subprocess.check_call(['cmake', '--build', '.'] + build_args,
                              cwd=self.build_temp)
        print()  # Add an empty line for cleaner output

setup(
    name='python_cpp_example',
    version='0.1',
    author='Benjamin Jack',
    author_email='benjamin.r.jack@gmail.com',
    description='A hybrid Python/C++ test project',
    long_description='',
    # add extension module
    ext_modules=[CMakeExtension('python_cpp_example')],
    # add custom build_ext command
    cmdclass=dict(build_ext=CMakeBuild),
    zip_safe=False,
)

在查看了一些诸如 的 SO 问题后,我知道您可以使用 numpy.get_include().

获取 numpy 包含目录

但是,用ext.include_dirs.append(numpy.get_include())这一行将include目录添加到函数build_extension里面的路径好像没有效果。

我想知道如何正确传递包含目录。

您的 cmake 构建是否使用了错误的 numpy 路径或根本没有找到 numpy?如果这是错误的路径,您可以尝试在前面而不是附加 numpy.get_include():

ext.include_dirs.insert(0,numpy.get_include())