356         for i, ext in enumerate(extensions):
357             if isinstance(ext, Extension):
361             if not isinstance(ext, tuple) or len(ext) != 2:
366             ext_name, build_info = ext
385             ext = Extension(ext_name, build_info['sources'])
394                     setattr(ext, key, val)
397             ext.runtime_library_dirs = build_info.get('rpath')
406                 ext.define_macros = []
407                 ext.undef_macros = []
414                         ext.undef_macros.append(macro[0])
416                         ext.define_macros.append(macro)
418             extensions[i] = ext
425         for ext in self.extensions:
426             filenames.extend(ext.sources)
439         for ext in self.extensions:
440             outputs.append(self.get_ext_fullpath(ext.name))
465             futures = [executor.submit(self.build_extension, ext)
466                        for ext in self.extensions]
467             for ext, fut in zip(self.extensions, futures):
468                 with self._filter_build_errors(ext):
472         for ext in self.extensions:
473             with self._filter_build_errors(ext):
474                 self.build_extension(ext)
477     def _filter_build_errors(self, ext):  argument
481             if not ext.optional:
484                       (ext.name, e))
486     def build_extension(self, ext):  argument
487         sources = ext.sources
492                   "a list of source filenames" % ext.name)
495         ext_path = self.get_ext_fullpath(ext.name)
496         depends = sources + ext.depends
498             log.debug("skipping '%s' extension (up-to-date)", ext.name)
501             log.info("building '%s' extension", ext.name)
506         sources = self.swig_sources(sources, ext)
522         extra_args = ext.extra_compile_args or []
524         macros = ext.define_macros[:]
525         for undef in ext.undef_macros:
531                                          include_dirs=ext.include_dirs,
534                                          depends=ext.depends)
543         if ext.extra_objects:
544             objects.extend(ext.extra_objects)
545         extra_args = ext.extra_link_args or []
548         language = ext.language or self.compiler.detect_language(sources)
552             libraries=self.get_libraries(ext),
553             library_dirs=ext.library_dirs,
554             runtime_library_dirs=ext.runtime_library_dirs,
556             export_symbols=self.get_export_symbols(ext),
586             (base, ext) = os.path.splitext(source)
587             if ext == ".i":             # SWIG interface file
685     def get_export_symbols(self, ext):  argument
691         initfunc_name = "PyInit_" + ext.name.split('.')[-1]
692         if initfunc_name not in ext.export_symbols:
693             ext.export_symbols.append(initfunc_name)
694         return ext.export_symbols
696     def get_libraries(self, ext):  argument
716                 return ext.libraries + [pythonlib]
718                 return ext.libraries
721             return ext.libraries
724             return ext.libraries
731                 return ext.libraries + [pythonlib]
733                 return ext.libraries