Message 165212 - Python tracker
I've succeeded in building an extension for Python 3.3 (at least, on Windows XP, 32-bit; haven't tried any 64-bit), by the hack of copying libmsvcr100.a from a recent MinGW release (20120426) into an older MinGW release (20101030). I haven't looked at MinGW releases to see if I can find one that supports both the -mno-cygwin option and msvcr100. I guess the best solution for this is to resolve issue #12641 for Python 3.3.