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from distutils.core import Extension as _Extension
from setuptools.dist import _get_unpatched
_Extension = _get_unpatched(_Extension)
# Prefer Cython to Pyrex
pyrex_impls = 'Cython.Distutils.build_ext', 'Pyrex.Distutils.build_ext'
for pyrex_impl in pyrex_impls:
try:
# from (pyrex_impl) import build_ext
build_ext = __import__(pyrex_impl, fromlist=['build_ext']).build_ext
break
except:
pass
have_pyrex = 'build_ext' in globals()
class Extension(_Extension):
"""Extension that uses '.c' files in place of '.pyx' files"""
if not have_pyrex:
# convert .pyx extensions to .c
def __init__(self,*args,**kw):
_Extension.__init__(self,*args,**kw)
sources = []
for s in self.sources:
if s.endswith('.pyx'):
sources.append(s[:-3]+'c')
else:
sources.append(s)
self.sources = sources
class Library(Extension):
"""Just like a regular Extension, but built as a library instead"""
import sys, distutils.core, distutils.extension
distutils.core.Extension = Extension
distutils.extension.Extension = Extension
if 'distutils.command.build_ext' in sys.modules:
sys.modules['distutils.command.build_ext'].Extension = Extension
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