我一直在研究Python包,它包着一些需要从源构建的C++库。我用CMake构建了这些,我希望整个过程最终都是可以‘pip安装’的。我马上就到了,但是我在让CMake构建的库最终进入Python最终安装目录时遇到了问题。在
奇怪的是,我设法让它们进入最后的“轮子”,但它们不在我的site_packages目录中。在
我的设置.py文件如下所示:
import os
import re
import sys
import sysconfig
import site
import platform
import subprocess
import pathlib
from distutils.version import LooseVersion
from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext as build_ext_orig
class CMakeExtension(Extension):
def __init__(self, name, sourcedir=''):
Extension.__init__(self, name, sources=[])
self.sourcedir = os.path.abspath(sourcedir)
class CMakeBuild(build_ext_orig):
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":
raise RuntimeError("Sorry, pyScannerBit doesn't work on Windows platforms. Please use Linux or OSX.")
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,
'-DCMAKE_VERBOSE_MAKEFILE:BOOL=OFF',
'-Wno-dev',
'-DCMAKE_RUNTIME_OUTPUT_DIRECTORY=' + extdir,
'-DSCANNERBIT_STANDALONE=True',
'-DCMAKE_INSTALL_RPATH=$ORIGIN',
'-DCMAKE_BUILD_WITH_INSTALL_RPATH:BOOL=ON',
'-DCMAKE_INSTALL_RPATH_USE_LINK_PATH:BOOL=ON',
'-DCMAKE_INSTALL_PREFIX:PATH=' + extdir,
]
cfg = 'Debug' if self.debug else 'Release'
build_args = ['--config', cfg]
if platform.system() == "Windows":
cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
if sys.maxsize > 2**32:
cmake_args += ['-A', 'x64']
build_args += ['--', '/m']
else:
cmake_args += ['-DCMAKE_BUILD_TYPE=' + cfg]
build_args += ['--', '-j2']
env = os.environ.copy()
env['CXXFLAGS'] = '{} -DVERSION_INFO=\\"{}\\"'.format(env.get('CXXFLAGS', ''),
self.distribution.get_version())
if not os.path.exists(self.build_temp):
os.makedirs(self.build_temp)
# untar ScannerBit tarball
subprocess.check_call(['tar','-C','pyscannerbit/scannerbit/untar/ScannerBit','-xf','pyscannerbit/scannerbit/ScannerBit_stripped.tar','--strip-components=1'], cwd=ext.sourcedir, env=env)
# First cmake
subprocess.check_call(['cmake', ext.sourcedir] + cmake_args, cwd=self.build_temp, env=env)
# Build all the scanners
subprocess.check_call(['cmake', '--build', '.', '--target', 'multinest'] + build_args, cwd=self.build_temp)
# Re-run cmake to detect built scanner plugins
subprocess.check_call(['cmake', ext.sourcedir], cwd=self.build_temp)
# Main build
subprocess.check_call(['cmake', '--build', '.'] + build_args, cwd=self.build_temp)
# Install
#subprocess.check_call(['cmake', '--build', '.', '--target', 'install'], cwd=self.build_temp)
setup(
name='pyscannerbit',
version='0.0.8',
author='Ben Farmer',
# Add yourself if you contribute to this package
author_email='ben.farmer@gmail.com',
description='A python interface to the GAMBIT scanning module, ScannerBit',
long_description='',
ext_modules=[CMakeExtension('_interface')],
cmdclass=dict(build_ext=CMakeBuild),
zip_safe=False,
packages=['pyscannerbit'],
)
如您所见,我告诉CMake在'extdir'中构建库,结果是这样
^{pr2}$我以为这些文件只会从这里复制(或者其他临时目录?)最终的安装路径中,但可能不是这样工作的(尽管我前面说过,这些构建的文件do最终在生成的轮子中结束)。这些生成的文件需要添加到吗清单.in或者是一些“数据包”之类的东西?目前它们并没有被列在任何地方,因为据我所知,它们是用来在构建前移动文件,而不是在构建后。目前我只使用清单.in确保我的sdist tarball正确填充。在
为了完整起见,我使用pip构建包,如下所示:
python setup.py sdist
pip install -v dist/pyscannerbit-0.0.8.tar.gz
这只是为了让我知道tarball的构建可以工作,以便以后与PyPI一起使用。在
如果您想尝试,源代码在github上:https://github.com/bjfar/pyscannerbit
好吧,看来我只是走错了路。我以前将
CMAKE_LIBRARY_OUTPUT_DIRECTORY
设置为但我需要指出的是
^{pr2}$其中pyscannerbit是包的名称。否则,文件将在生成发生的父目录中结束,而不是在项目目录中。这样它们就不会被复制到安装路径。在
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