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#!/usr/bin/env python
"""mpi4py-fft -- Parallel Fast Fourier Transforms (FFTs) using MPI for Python"""
import os
import sys
import re
import platform
import sysconfig
from distutils import ccompiler
from distutils.errors import DistutilsPlatformError
from setuptools import setup
from setuptools.dist import Distribution
from setuptools.extension import Extension
import numpy
cwd = os.path.abspath(os.path.dirname(__file__))
fftwdir = os.path.join(cwd, 'mpi4py_fft', 'fftw')
prec_map = {'float': 'f', 'double': '', 'long double': 'l'}
triplet = sysconfig.get_config_var('MULTIARCH') or ''
bits = platform.architecture()[0][:-3]
def append(dirlist, *args):
entry = os.path.join(*args)
entry = os.path.normpath(entry)
if os.path.isdir(entry):
if entry not in dirlist:
dirlist.append(entry)
def get_prefix_dirs():
dirs = []
for envvar in ('FFTW_ROOT', 'FFTW_DIR'):
if envvar in os.environ:
prefix = os.environ[envvar]
append(dirs, prefix)
append(dirs, sys.prefix)
if 'CONDA_BUILD' not in os.environ:
append(dirs, '/usr')
append(dirs, '/usr/local')
append(dirs, '/opt/homebrew')
return dirs
def get_include_dirs():
dirs = []
if 'FFTW_INCLUDE_DIR' in os.environ:
entry = os.environ['FFTW_INCLUDE_DIR']
append(dirs, entry)
for prefix in get_prefix_dirs():
append(dirs, prefix, 'include', triplet)
append(dirs, prefix, 'include')
dirs.append(numpy.get_include())
return dirs
def get_library_dirs():
dirs = []
if 'FFTW_LIBRARY_DIR' in os.environ:
entry = os.environ['FFTW_LIBRARY_DIR']
append(dirs, entry)
for prefix in get_prefix_dirs():
append(dirs, prefix, 'lib' + bits)
append(dirs, prefix, 'lib', triplet)
append(dirs, prefix, 'lib')
return dirs
def get_fftw_libs():
"""Return FFTW libraries"""
compiler = ccompiler.new_compiler()
library_dirs = get_library_dirs()
libs = {}
for d in ('float', 'double', 'long double'):
lib = 'fftw3'+prec_map[d]
tlib = lib+'_threads'
if compiler.find_library_file(library_dirs, lib):
libs[d] = [lib]
if compiler.find_library_file(library_dirs, tlib):
libs[d].append(tlib)
if os.name == 'posix':
libs[d].append('m')
if not libs:
message = "No FFTW libraries found in {}".format(library_dirs)
raise DistutilsPlatformError(message)
return libs
def generate_extensions(fftwlibs, force=True):
"""Generate files with float and long double"""
try:
from setuptools.modified import newer_group
except ImportError:
try:
from setuptools.dep_util import newer_group
except ImportError:
from distutils.dep_util import newer_group
for d in fftwlibs:
if d == 'double':
continue
p = 'fftw'+prec_map[d]+'_'
for fname in (
'fftw_planxfftn.h',
'fftw_planxfftn.c',
'fftw_xfftn.pyx',
'fftw_xfftn.pxd',
):
src = os.path.join(fftwdir, fname)
dst = os.path.join(fftwdir, fname.replace('fftw_', p))
if force or newer_group([src], dst, 'newer'):
with open(src, 'r') as fin:
code = fin.read()
code = re.sub('fftw_', p, code)
code = re.sub('double', d, code)
with open(dst, 'w') as fout:
fout.write(code)
def remove_extensions(fftwlibs):
"""Remove generated files"""
for fname in (
'utilities.c',
'fftw_xfftn.c',
'fftwf_xfftn.c',
'fftwl_xfftn.c',
):
dst = os.path.join(fftwdir, fname)
try:
os.remove(dst)
except OSError:
pass
for d in fftwlibs:
if d == 'double':
continue
p = 'fftw'+prec_map[d]+'_'
for fname in (
'fftw_planxfftn.h',
'fftw_planxfftn.c',
'fftw_xfftn.pyx',
'fftw_xfftn.pxd',
):
dst = os.path.join(fftwdir, fname.replace('fftw_', p))
try:
os.remove(dst)
except OSError:
pass
def get_extensions():
"""Return list of extension modules"""
include_dirs = get_include_dirs()
library_dirs = get_library_dirs()
ext = [
Extension(
"mpi4py_fft.fftw.utilities",
sources=[os.path.join(fftwdir, "utilities.pyx")],
define_macros=[('NPY_NO_DEPRECATED_API', 'NPY_1_7_API_VERSION')],
include_dirs=include_dirs,
),
]
sdist = 'sdist' in sys.argv
egg_info = 'egg_info' in sys.argv
fftwlibs = (
get_fftw_libs() if not (sdist or egg_info) else
{d: [] for d in ('float', 'double', 'long double')}
)
for d, libs in fftwlibs.items():
p = 'fftw' + prec_map[d] + '_'
ext.append(
Extension(
"mpi4py_fft.fftw.{}xfftn".format(p),
sources=[
os.path.join(fftwdir, "{}xfftn.pyx".format(p)),
os.path.join(fftwdir, "{}planxfftn.c".format(p)),
],
define_macros=[('NPY_NO_DEPRECATED_API', 'NPY_1_7_API_VERSION')],
libraries=libs,
include_dirs=include_dirs,
library_dirs=library_dirs,
)
)
return ext
class Dist(Distribution):
def get_command_class(self, command):
get_command_class = Distribution.get_command_class
if 'build_ext' not in self.cmdclass:
_build_ext = get_command_class(self, 'build_ext')
class build_ext(_build_ext):
def run(self):
fftw_libs = get_fftw_libs()
generate_extensions(fftw_libs, self.force)
_build_ext.run(self)
self.cmdclass['build_ext'] = build_ext
if 'clean' not in self.cmdclass:
_clean = get_command_class(self, 'clean')
class clean(_clean):
def run(self):
fftw_libs = get_fftw_libs()
remove_extensions(fftw_libs)
_clean.run(self)
self.cmdclass['clean'] = clean
return get_command_class(self, command)
def version():
srcdir = os.path.join(cwd, 'mpi4py_fft')
with open(os.path.join(srcdir, '__init__.py')) as f:
m = re.search(r"__version__\s*=\s*'(.*)'", f.read())
return m.groups()[0]
with open("README.rst", "r") as fh:
long_description = fh.read()
if __name__ == '__main__':
setup(name="mpi4py-fft",
version=version(),
description=__doc__.strip(),
long_description=long_description,
long_description_content_type='text/x-rst',
author="Lisandro Dalcin and Mikael Mortensen",
url="https://github.com/mpi4py/mpi4py-fft",
packages=[
"mpi4py_fft",
"mpi4py_fft.fftw",
"mpi4py_fft.io",
],
package_dir={
"mpi4py_fft": "mpi4py_fft",
},
classifiers=[
'Development Status :: 4 - Beta',
'Environment :: Console',
'Intended Audience :: Developers',
'Intended Audience :: Science/Research',
'Programming Language :: Python',
'Programming Language :: Python :: 2',
'Programming Language :: Python :: 3',
'License :: OSI Approved :: BSD License',
'Topic :: Scientific/Engineering :: Mathematics',
'Topic :: Software Development :: Libraries :: Python Modules',
],
keywords=['Python', 'FFTW', 'FFT', 'DCT', 'DST', 'MPI'],
distclass=Dist,
ext_modules=get_extensions(),
install_requires=["mpi4py", "numpy"],
)
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