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from distutils.command.build_ext import build_ext as _du_build_ext
try:
# Attempt to use Pyrex for building extensions, if available
from Pyrex.Distutils.build_ext import build_ext as _build_ext
except ImportError:
_build_ext = _du_build_ext
import os, sys
from distutils.file_util import copy_file
class build_ext(_build_ext):
def run(self):
"""Build extensions in build directory, then copy if --inplace"""
old_inplace, self.inplace = self.inplace, 0
_build_ext.run(self)
self.inplace = old_inplace
if old_inplace:
self.copy_extensions_to_source()
def copy_extensions_to_source(self):
build_py = self.get_finalized_command('build_py')
for ext in self.extensions or ():
fullname = ext.name
modpath = fullname.split('.')
package = '.'.join(modpath[:-1])
base = modpath[-1]
package_dir = build_py.get_package_dir(package)
dest_filename = os.path.join(package_dir,
self.get_ext_filename(base))
src_filename = os.path.join(self.build_lib,
self.get_ext_filename(fullname))
# Always copy, even if source is older than destination, to ensure
# that the right extensions for the current Python/platform are
# used.
copy_file(
src_filename, dest_filename, verbose=self.verbose,
dry_run=self.dry_run
)
if _build_ext is not _du_build_ext:
# Workaround for problems using some Pyrex versions w/SWIG and/or 2.4
def swig_sources(self, sources, *otherargs):
# first do any Pyrex processing
sources = _build_ext.swig_sources(self, sources) or sources
# Then do any actual SWIG stuff on the remainder
return _du_build_ext.swig_sources(self, sources, *otherargs)
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