This patch fixes the assumed invalid command to start recent versions of cx_freeze on Windows, which are python and not Windows executables. To launch them correctly, the '$(PYTHON_HOME)\python' prefix has been added, so that Python can interpret the tool. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Marvin Haeuser <Marvin.Haeuser@outlook.com> Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>