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############################################################################

# Copyright (c) 2016, Johan Mabille and Sylvain Corlay #

# #

# Distributed under the terms of the BSD 3-Clause License. #

# #

# The full license is in the file LICENSE, distributed with this software. #

############################################################################

from setuptools import setup, Extension

from setuptools.command.build_ext import build_ext

import sys

import os

import setuptools

__version__ = '0.0.1'

class get_pybind_include(object):

"""Helper class to determine the pybind11 include path

The purpose of this class is to postpone importing pybind11

until it is actually installed, so that the ``get_include()``

method can be invoked. """

def __init__(self, user=False):

self.user = user

def __str__(self):

import pybind11

return pybind11.get_include(self.user)

class get_numpy_include(object):

"""Helper class to determine the numpy include path

The purpose of this class is to postpone importing numpy

until it is actually installed, so that the ``get_include()``

method can be invoked. """

def __str__(self):

import numpy

return numpy.get_include()

ext_modules = [

Extension(

'xtensor_python_test',

['main.cpp'],

include_dirs=[

# Path to pybind11 headers

get_pybind_include(),

get_pybind_include(user=True),

# Path to numpy headers

get_numpy_include(),

os.path.join(sys.prefix, 'include'),

os.path.join(sys.prefix, 'Library', 'include')

],

language='c++'

),

]

def has_flag(compiler, flagname):

"""Return a boolean indicating whether a flag name is supported on

the specified compiler.

"""

import tempfile

with tempfile.NamedTemporaryFile('w', suffix='.cpp') as f:

f.write('int main (int argc, char **argv) { return 0; }')

try:

compiler.compile([f.name], extra_postargs=[flagname])

except setuptools.distutils.errors.CompileError:

return False

return True

def cpp_flag(compiler):

"""Return the -std=c++14 compiler flag and errors when the flag is

no available.

"""

if has_flag(compiler, '-std=c++14'):

return '-std=c++14'

else:

raise RuntimeError('C++14 support is required by xtensor!')

class BuildExt(build_ext):

"""A custom build extension for adding compiler-specific options."""

c_opts = {

'msvc': ['/EHsc'],

'unix': [],

}

if sys.platform == 'darwin':

c_opts['unix'] += ['-stdlib=libc++', '-mmacosx-version-min=10.7']

def build_extensions(self):

ct = self.compiler.compiler_type

opts = self.c_opts.get(ct, [])

if ct == 'unix':

opts.append('-DVERSION_INFO="%s"' % self.distribution.get_version())

opts.append(cpp_flag(self.compiler))

if has_flag(self.compiler, '-fvisibility=hidden'):

opts.append('-fvisibility=hidden')

elif ct == 'msvc':

opts.append('/DVERSION_INFO=\\"%s\\"' % self.distribution.get_version())

for ext in self.extensions:

ext.extra_compile_args = opts

build_ext.build_extensions(self)

setup(

name='xtensor_python_test',

version=__version__,

author='Sylvain Corlay',

author_email='sylvain.corlay@gmail.com',

url='https://github.com/pybind/python_example',

description='An example project using xtensor-python',

long_description='',

ext_modules=ext_modules,

install_requires=['pybind11>=2.0.1'],

cmdclass={'build_ext': BuildExt},

zip_safe=False,

)