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)
496         ext_path = self.get_ext_fullpath(ext.name)
497         depends = sources + ext.depends
499             log.debug("skipping '%s' extension (up-to-date)", ext.name)
502             log.info("building '%s' extension", ext.name)
507         sources = self.swig_sources(sources, ext)
523         extra_args = ext.extra_compile_args or []
525         macros = ext.define_macros[:]
526         for undef in ext.undef_macros:
532                                          include_dirs=ext.include_dirs,
535                                          depends=ext.depends)
544         if ext.extra_objects:
545             objects.extend(ext.extra_objects)
546         extra_args = ext.extra_link_args or []
549         language = ext.language or self.compiler.detect_language(sources)
553             libraries=self.get_libraries(ext),
554             library_dirs=ext.library_dirs,
555             runtime_library_dirs=ext.runtime_library_dirs,
557             export_symbols=self.get_export_symbols(ext),
587             (base, ext) = os.path.splitext(source)
588             if ext == ".i":             # SWIG interface file
686     def get_export_symbols(self, ext):  argument
692         suffix = '_' + ext.name.split('.')[-1]
701         if initfunc_name not in ext.export_symbols:
702             ext.export_symbols.append(initfunc_name)
703         return ext.export_symbols
705     def get_libraries(self, ext):  argument
725                 return ext.libraries + [pythonlib]
752                 return ext.libraries + ['python' + ldversion]
754         return ext.libraries