This issue happens under two conditions
1. Unicode language environment in Windows
2. A python calls 'BaseTools/toolsetup.bat'
(In EDKII, edksetup.bat directly in Windows command shell)
- 'BuildLoader.py' calls 'BaseTools/toolsetup.bat' in a subprocess
- 'BaseTools/toolsetup.bat' calls 'nmake cleanall'
- 'cleanall' target runs 'python NmakeSubdirs.py' directly
- 'NmakeSubdirs.py' creates multi-threads
- The threads create another subprocesses
But, one of multi-threads is on deadlock when python handles stdout and
stderr in a subprocess pipe only if the output includes unicode chars.
Therefore, only stderr will be handled in the pipe same as a single
thread call.
Signed-off-by: Aiden Park <aiden.park@intel.com>
6295c4ec8f