The problem also still exists on Python 3.4 (and probably 3.3 and 3.5 as well), even though these should have the patch from issue18235 applied:

 * http://buildbot.python.org/all/builders/PPC64%20AIX%203.4/builds/707
 * http://buildbot.python.org/all/builders/PPC64%20AIX%203.4/builds/707/steps/test/logs/stdio

Traceback:

Traceback (most recent call last):
  File "/home/shager/cpython-buildarea/3.4.edelsohn-aix-ppc64/build/Lib/distutils/tests/test_build_ext.py", line 58, in test_build_ext
    cmd.run()
  File "/home/shager/cpython-buildarea/3.4.edelsohn-aix-ppc64/build/Lib/distutils/command/build_ext.py", line 339, in run
    self.build_extensions()
  File "/home/shager/cpython-buildarea/3.4.edelsohn-aix-ppc64/build/Lib/distutils/command/build_ext.py", line 448, in build_extensions
    self.build_extension(ext)
  File "/home/shager/cpython-buildarea/3.4.edelsohn-aix-ppc64/build/Lib/distutils/command/build_ext.py", line 535, in build_extension
    target_lang=language)
  File "/home/shager/cpython-buildarea/3.4.edelsohn-aix-ppc64/build/Lib/distutils/ccompiler.py", line 717, in link_shared_object
    extra_preargs, extra_postargs, build_temp, target_lang)
  File "/home/shager/cpython-buildarea/3.4.edelsohn-aix-ppc64/build/Lib/distutils/unixccompiler.py", line 196, in link
    raise LinkError(msg)
distutils.errors.LinkError: command './Modules/ld_so_aix' failed with exit status 1