#! /usr/bin/env python3

import os

import re

import sys

import sysconfig

import platform

import subprocess

from distutils.version import LooseVersion

from setuptools import setup, Extension, find_packages

from setuptools.command.build_ext import build_ext

from setuptools.command.test import test as TestCommand

from shutil import copyfile, copymode

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)

# Copy *_test file to tests directory

test_bin = os.path.join(self.build_temp, 'python_cpp_example_test')

self.copy_test_file(test_bin)

print() # Add an empty line for cleaner output

def copy_test_file(self, src_file):

'''

Copy ``src_file`` to ``dest_file`` ensuring parent directory exists.

By default, message like `creating directory /path/to/package` and

`copying directory /src/path/to/package -> path/to/package` are displayed on standard output. Adapted from scikit-build.

'''

# Create directory if needed

dest_dir = os.path.join(os.path.dirname(

os.path.abspath(__file__)), 'tests', 'bin')

if dest_dir != "" and not os.path.exists(dest_dir):

print("creating directory {}".format(dest_dir))

os.makedirs(dest_dir)

# Copy file

dest_file = os.path.join(dest_dir, os.path.basename(src_file))

print("copying {} -> {}".format(src_file, dest_file))

copyfile(src_file, dest_file)

copymode(src_file, dest_file)

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='',

packages=find_packages('src'),

package_dir={'':'src'},

ext_modules=[CMakeExtension('python_cpp_example/python_cpp_example')],

cmdclass=dict(build_ext=CMakeBuild),

test_suite='tests',

zip_safe=False,

)