Can't build demos on Windows 8.1

[Alexander Scherbatiy]

  Hello,

  I installed Windows 8.1 and built JDK 9.
  When I call
     > make demos
  the whole JDK is rebuilt and demos are not created.

  The same is for
    > make java.desktop

  I do not see this problem on my Windows 7.

  Should I send any additional info or log files? I do not have idea 
what can be helpful in this case.

Thanks,
Alexandr.