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# swiglpk - Swig Python bindings for the GNU Linear Programming Kit (GLPK)
# Copyright (C) 2015 The Novo Nordisk Foundation Center for Biosustainability
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# http://stackoverflow.com/questions/12491328/python-distutils-not-include-the-swig-generated-module
import os
import warnings
from setuptools import setup, Extension
from distutils.command.build import build
import versioneer
ENV_GLPK_HEADER_PATH = 'GLPK_HEADER_PATH'
GLPK_HEADER_NAME = 'glpk.h'
GLPSOL_BINARY_NAME = 'glpsol'
INCLUDE_DIRS = (
'/usr/local/include',
'/usr/include',
'/include',
)
class CustomBuild(build):
sub_commands = [
('build_ext', build.has_ext_modules),
('build_py', build.has_pure_modules),
('build_clib', build.has_c_libraries),
('build_scripts', build.has_scripts),
]
def find_glpk_header():
# If a path is provded by the environment, expect the GLPK header there.
given_path = os.environ.get(ENV_GLPK_HEADER_PATH, None)
if given_path:
if os.path.isfile(given_path):
if os.path.basename(given_path) == GLPK_HEADER_NAME:
return os.path.abspath(os.path.dirname(given_path))
else:
warnings.warn(
'The environment variable {}="{}" points to a file not '
'named {}.'.format(ENV_GLPK_HEADER_PATH, given_path,
GLPK_HEADER_NAME), stacklevel=2
)
elif os.path.isdir(given_path):
header = os.path.join(given_path, GLPK_HEADER_NAME)
if os.path.isfile(header):
return os.path.abspath(given_path)
else:
warnings.warn(
'The environment variable {}="{}" is set to a directory '
'that does not contain {}.'.format(ENV_GLPK_HEADER_PATH,
given_path, GLPK_HEADER_NAME), stacklevel=2
)
else:
warnings.warn(
'The environment variable {}="{}" does not point to a '
'directory or file.'.format(ENV_GLPK_HEADER_PATH, given_path),
stacklevel=2
)
# Look for a drop-in header file next.
if os.path.isfile(GLPK_HEADER_NAME):
return os.getcwd()
include_dirs = list(INCLUDE_DIRS)
# If glpsol is found, look for an include directory in its vicinity.
try:
from shutil import which
except ImportError: # Python < 3.3.
pass
else:
glpsol = which(GLPSOL_BINARY_NAME)
if glpsol:
glpsol_path = os.path.dirname(glpsol)
glpsol_root = os.path.dirname(glpsol_path)
glpsol_include_path = os.path.join(glpsol_root, "include")
include_dirs.insert(0, glpsol_include_path)
# Look at common places.
for path in include_dirs:
if os.path.isdir(path):
header = os.path.join(path, GLPK_HEADER_NAME)
if os.path.isfile(header):
return os.path.abspath(path)
raise FileNotFoundError('Failed to locate {}.'.format(GLPK_HEADER_NAME))
# Warn users installing via pip that this is a source build.
print(
'='*30,
'BUILDING SWIGLPK FROM SOURCE.',
'If you are installing SWIGLPK via pip, this means that no wheels are'
' offered for your platform or Python version yet.',
'This can be the case if you adopt a new Python version early.',
'A source build requires GLPK, SWIG, and GMP (Linux/Mac) to be installed!',
'='*30,
sep='\n'
)
# Find the GLPK header.
try:
print('Looking for {}...'.format(GLPK_HEADER_NAME))
glpk_header_dirname = find_glpk_header()
except FileNotFoundError as error:
raise RuntimeError(
'A source build of SWIGLPK requires GLPK to be installed but we could'
' not find {0}. You may put {0} inside the current directory or link'
' to its parent folder via {1}.'
.format(GLPK_HEADER_NAME, ENV_GLPK_HEADER_PATH)
) from error
else:
print('Found {} in {}.'.format(GLPK_HEADER_NAME, glpk_header_dirname))
# Make sure SWIG is available.
try:
from shutil import which
except ImportError:
pass # This check is not critical given the warning above.
else:
print('Making sure SWIG is available...')
if which('swig'):
print('Found the swig executable.')
else:
raise RuntimeError(
'A source build of SWIGLPK requires SWIG to be installed but we '
'could not find the swig executable.')
# Assemble custom_cmd_class.
custom_cmd_class = versioneer.get_cmdclass()
custom_cmd_class['build'] = CustomBuild
try:
from wheel.bdist_wheel import bdist_wheel
class CustomBdistWheel(bdist_wheel):
def run(self):
self.run_command('build_ext')
bdist_wheel.run(self)
custom_cmd_class['bdist_wheel'] = CustomBdistWheel
except ImportError:
pass # Custom command not needed if wheel is not installed.
# Read long description from README.rst.
try:
with open('README.rst', 'r') as f:
long_description = f.read()
except Exception:
long_description = ''
# Run setup.
setup(
name='swiglpk',
version=versioneer.get_version(),
cmdclass=custom_cmd_class,
packages=['swiglpk'],
package_dir={'swiglpk': 'swiglpk'},
author='Nikolaus Sonnenschein',
author_email='niko.sonnenschein@gmail.com',
description='swiglpk - Simple swig bindings for the GNU Linear Programming Kit',
license='GPL v3',
keywords='optimization swig glpk',
url='https://github.com/biosustain/swiglpk',
long_description=long_description,
classifiers=[
'Development Status :: 5 - Production/Stable',
'Topic :: Scientific/Engineering',
'Topic :: Software Development',
'Intended Audience :: Science/Research',
'Programming Language :: Python :: 2.7',
'Programming Language :: Python :: 3.4',
'License :: OSI Approved :: GNU General Public License v3 (GPLv3)'
],
ext_modules=[
Extension(
"swiglpk._swiglpk",
sources=["swiglpk/glpk.i"],
include_dirs=[glpk_header_dirname],
swig_opts=["-I"+glpk_header_dirname],
libraries=['glpk'])
],
include_package_data=True
)
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