_POSIX_THREADS     49 native_client_sdk/src/libraries/third_party/newlib-extras/sys/signal.h #if defined(_POSIX_THREADS)
_POSIX_THREADS    137 native_client_sdk/src/libraries/third_party/newlib-extras/sys/signal.h #if defined(_POSIX_THREADS)
_POSIX_THREADS    164 native_client_sdk/src/libraries/third_party/newlib-extras/sys/signal.h #if defined(_POSIX_THREADS) && !defined(__native_client__)