http://bugs.winehq.org/show_bug.cgi?id=58751
--- Comment #8 from Shmerl shtetldik@gmail.com --- I see that ntsync.h is also found in linux-libc-dev and you have that installed, but not sure if it's the same one or not. I built stuff locally using linux-headers-amd64 and my build works with ntsync.