_POSIX_SOURCE      88 native_client_sdk/src/libraries/third_party/pthreads-win32/pthread.h #if defined(_POSIX_SOURCE)
_POSIX_SOURCE      44 native_client_sdk/src/libraries/third_party/pthreads-win32/sched.h #if defined(_POSIX_SOURCE)
_POSIX_SOURCE      44 native_client_sdk/src/libraries/third_party/pthreads-win32/semaphore.h #if defined(_POSIX_SOURCE)