conftst.c: In function `blah':
conftst.c:2: warning: implicit declaration of function `pthread_mutexattr_setprotocol'
conftst.c:2: error: `PTHREAD_PRIO_INHERIT' undeclared (first use in this function)
conftst.c:2: error: (Each undeclared identifier is reported only once
conftst.c:2: error: for each function it appears in.)