297     def _configure_ext(self, ext, dct, append=False):  argument
298         extdict = ext.__dict__
618     def _copy_ext(self, ext):  argument
619         extclass = ext.__class__
620         fullname = self.get_ext_fullname(ext.name)
624         sources = list(ext.sources)
626         newext.__dict__.update(copy.deepcopy(ext.__dict__))
630     def _build_ext_arch(self, ext, pkgpath, arch):  argument
636             _build_ext.build_extension(self, ext)
644     def build_extension(self, ext):  argument
645         if not isinstance(ext, Extension):
646             return _build_ext.build_extension(self, ext)
656             ext.language = config.language
658             pkgpath, newext = self._copy_ext(ext)
753         for ext in self.extensions:
754             inp_file, reg_file = self._get_inplace_equivalent(build_py, ext)
757             if isinstance(ext, Extension) and self.petsc_arch:
769                 if os.path.exists(reg_file) or not ext.optional:
777         for ext in self.extensions:
778             fullname = self.get_ext_fullname(ext.name)
780             if isinstance(ext, Extension) and self.petsc_arch: