=> Bootstrap dependency digest>=20010302: found digest-20160304
===> Building for libuv-1.9.1
  CC       src/libuv_la-fs-poll.lo
In file included from src/fs-poll.c:22:
In file included from ./include/uv.h:62:
./include/uv-unix.h:40:10: fatal error: 'pthread.h' file not found
#include <pthread.h>
         ^
1 error generated.
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/work/devel/libuv/work/libuv-1.9.1
*** Error code 1

Stop.
bmake[1]: stopped in /usr/pkgsrc/devel/libuv
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/devel/libuv