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#!/usr/bin/env python
import os
import sys
import glob
from distutils.core import setup
from Cython.Build import cythonize
from Cython.Utils import find_root_package_dir, is_package_dir
from Cython.Compiler import Options
try:
import multiprocessing
parallel_compiles = int(multiprocessing.cpu_count() * 1.5)
except ImportError:
multiprocessing = None
parallel_compiles = 0
class _FakePool(object):
def map_async(self, func, args):
from itertools import imap
for _ in imap(func, args):
pass
def close(self): pass
def terminate(self): pass
def join(self): pass
def parse_directives(option, name, value, parser):
dest = option.dest
old_directives = dict(getattr(parser.values, dest,
Options.directive_defaults))
directives = Options.parse_directive_list(
value, relaxed_bool=True, current_settings=old_directives)
setattr(parser.values, dest, directives)
def parse_options(option, name, value, parser):
dest = option.dest
options = dict(getattr(parser.values, dest, {}))
for opt in value.split(','):
if '=' in opt:
n, v = opt.split('=', 1)
v = v.lower() not in ('false', 'f', '0', 'no')
else:
n, v = opt, True
options[n] = v
setattr(parser.values, dest, options)
def find_package_base(path):
base_dir, package_path = os.path.split(path)
while os.path.isfile(os.path.join(base_dir, '__init__.py')):
base_dir, parent = os.path.split(base_dir)
package_path = '%s/%s' % (parent, package_path)
return base_dir, package_path
def cython_compile(path_pattern, options):
pool = None
try:
for path in glob.iglob(path_pattern):
path = os.path.abspath(path)
if options.build_inplace:
if is_package_dir(path):
base_dir = find_root_package_dir(path)
else:
base_dir = path
else:
base_dir = None
if os.path.isdir(path):
# recursively compiling a package
paths = [os.path.join(path, '**', '*.%s' % ext)
for ext in ('py', 'pyx')]
else:
# assume it's a file(-like thing)
paths = [path]
cwd = os.getcwd()
try:
if base_dir:
os.chdir(base_dir)
ext_modules = cythonize(
paths,
nthreads=options.parallel,
exclude_failures=options.keep_going,
exclude=options.excludes,
compiler_directives=options.directives,
**options.options)
finally:
if base_dir:
os.chdir(cwd)
if options.build:
if len(ext_modules) > 1 and options.parallel:
if pool is None:
try:
pool = multiprocessing.Pool(options.parallel)
except OSError:
pool = _FakePool()
pool.map_async(run_distutils, [
(base_dir, [ext]) for ext in ext_modules])
else:
run_distutils((base_dir, ext_modules))
except:
if pool is not None:
pool.terminate()
raise
else:
if pool is not None:
pool.close()
finally:
if pool is not None:
pool.join()
def run_distutils(args):
base_dir, ext_modules = args
sys.argv[1:] = ['build_ext', '-i']
cwd = os.getcwd()
try:
if base_dir:
os.chdir(base_dir)
setup(ext_modules=ext_modules)
finally:
if base_dir:
os.chdir(cwd)
def parse_args(args):
from optparse import OptionParser
parser = OptionParser(usage='%prog [options] [sources and packages]+')
parser.add_option('-X', '--directive', metavar='NAME=VALUE,...', dest='directives',
action='callback', callback=parse_directives, default={},
help='set a compiler directive')
parser.add_option('-s', '--option', metavar='NAME=VALUE', dest='options',
action='callback', callback=parse_options, default={},
help='set a cythonize option')
parser.add_option('-x', '--exclude', metavar='PATTERN', dest='excludes',
action='append', default=[],
help='exclude certain file patterns from the compilation')
parser.add_option('-b', '--build', dest='build', action='store_true',
help='build extension modules using distutils')
parser.add_option('-i', '--inplace', dest='build_inplace', action='store_true',
help='build extension modules in place using distutils (implies -b)')
parser.add_option('-j', '--parallel', dest='parallel', metavar='N',
type=int, default=parallel_compiles,
help=('run builds in N parallel jobs (default: %d)' %
parallel_compiles or 1))
parser.add_option('--lenient', dest='lenient', action='store_true',
help='increase Python compatibility by ignoring some compile time errors')
parser.add_option('-k', '--keep-going', dest='keep_going', action='store_true',
help='compile as much as possible, ignore compilation failures')
options, args = parser.parse_args(args)
if not args:
parser.error("no source files provided")
if options.build_inplace:
options.build = True
if multiprocessing is None:
options.parallel = 0
return options, args
def main(args=None):
options, paths = parse_args(args)
if options.lenient:
# increase Python compatibility by ignoring compile time errors
Options.error_on_unknown_names = False
Options.error_on_uninitialized = False
for path in paths:
cython_compile(path, options)
if __name__ == '__main__':
main()
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