Issue 17869: distutils - TypeError in command/build_ext.py

Traceback (most recent call last):
  File "setup.py", line 221, in <module>
    ...  and much more ;)"""
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/dist.py", line 917, in run_commands
    self.run_command(cmd)
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/dist.py", line 936, in run_command
    cmd_obj.run()
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/command/build.py", line 126, in run
    self.run_command(cmd_name)
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/dist.py", line 936, in run_command
    cmd_obj.run()
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/command/build_ext.py", line 349, in run
    self.build_extensions()
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/command/build_ext.py", line 458, in build_extensions
    self.build_extension(ext)
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/command/build_ext.py", line 474, in build_extension
    ext_path = self.get_ext_fullpath(ext.name)
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/command/build_ext.py", line 633, in get_ext_fullpath
    filename = self.get_ext_filename(modpath[-1])
  File "/home/giampaolo/svn/python/3.4/Lib/distutils/command/build_ext.py", line 672, in get_ext_filename
    return os.path.join(*ext_path) + ext_suffix
TypeError: Can't convert 'NoneType' object to str implicitly


I'm getting this while building PyOpenSSL on Linux with laterst cset of Python 3.4.
Everything's fine on Python 3.3.
Possibly related with issue #16754?

Your Python seems to be built incorrectly. Maybe you forgot to re-run './configure ...; make' after updating working copy. Could you try in a new working copy?

(I cannot reproduce this bug.)

I'm sorry, you're right.

:)