58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
import re
|
|
import functools
|
|
import distutils.core
|
|
import distutils.errors
|
|
import distutils.extension
|
|
|
|
from setuptools.extern.six.moves import map
|
|
|
|
from .monkey import get_unpatched
|
|
|
|
|
|
def _have_cython():
|
|
"""
|
|
Return True if Cython can be imported.
|
|
"""
|
|
cython_impl = 'Cython.Distutils.build_ext'
|
|
try:
|
|
# from (cython_impl) import build_ext
|
|
__import__(cython_impl, fromlist=['build_ext']).build_ext
|
|
return True
|
|
except Exception:
|
|
pass
|
|
return False
|
|
|
|
|
|
# for compatibility
|
|
have_pyrex = _have_cython
|
|
|
|
_Extension = get_unpatched(distutils.core.Extension)
|
|
|
|
|
|
class Extension(_Extension):
|
|
"""Extension that uses '.c' files in place of '.pyx' files"""
|
|
|
|
def __init__(self, name, sources, *args, **kw):
|
|
# The *args is needed for compatibility as calls may use positional
|
|
# arguments. py_limited_api may be set only via keyword.
|
|
self.py_limited_api = kw.pop("py_limited_api", False)
|
|
_Extension.__init__(self, name, sources, *args, **kw)
|
|
|
|
def _convert_pyx_sources_to_lang(self):
|
|
"""
|
|
Replace sources with .pyx extensions to sources with the target
|
|
language extension. This mechanism allows language authors to supply
|
|
pre-converted sources but to prefer the .pyx sources.
|
|
"""
|
|
if _have_cython():
|
|
# the build has Cython, so allow it to compile the .pyx files
|
|
return
|
|
lang = self.language or ''
|
|
target_ext = '.cpp' if lang.lower() == 'c++' else '.c'
|
|
sub = functools.partial(re.sub, '.pyx$', target_ext)
|
|
self.sources = list(map(sub, self.sources))
|
|
|
|
|
|
class Library(Extension):
|
|
"""Just like a regular Extension, but built as a library instead"""
|