~/WireGuard-0.0.20181218/src/noise.c: In function ‘tai64n_now’:
~/WireGuard-0.0.20181218/src/noise.c:453:2: error: implicit declaration of function ‘getnstimeofday64’; did you mean ‘getnstimeofday’? [-Werror=implicit-function-declaration]
  getnstimeofday64(&now);
  ^~~~~~~~~~~~~~~~
  getnstimeofday
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:277: ~/WireGuard-0.0.20181218/src/noise.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [Makefile:1553: _module_~/WireGuard-0.0.20181218/src] Error 2
make: *** [Makefile:36: module] Error 2