From c3fee694644cdf24bfb974dcd924fbdf524350ee Mon Sep 17 00:00:00 2001 From: Guido van Rossum Date: Thu, 17 Jul 2008 16:23:53 +0000 Subject: [PATCH] Fix bug 3375 - _multiprocessing.so build problems on OS X. The solution is to clear sys.path_importer_cache. --- setup.py | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/setup.py b/setup.py index 90fe68f4475..f0fed72b8cb 100644 --- a/setup.py +++ b/setup.py @@ -263,6 +263,12 @@ class PyBuildExt(build_ext): ext_filename = os.path.join( self.build_lib, self.get_ext_filename(self.get_ext_fullname(ext.name))) + + # If the build directory didn't exist when setup.py was + # started, sys.path_importer_cache has a negative result + # cached. Clear that cache before trying to import. + sys.path_importer_cache.clear() + try: imp.load_dynamic(ext.name, ext_filename) except ImportError as why: