mingw32-make: *** No targets specified and no makefile found. Stop.

[s455016457]

When I build ViewerJS.
The last step show error :mingw32-make: *** No targets specified and no makefile found. Stop.
I don't know what went wrong.
My Operating System is Win8.
The tool version is:
GNU Make 3.82.90
Built for i686-pc-mingw32