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.