main.c:2994: Undefined symbol `_sched_get_priority_max' referenced from text segment main.c:2995: Undefined symbol `_sched_setscheduler' referenced from text segment collect2: ld returned 1 exit status I don't find them in libc_r. libpthread is deprecated, afaict. All my grepping and stringsing has come to no avail. Awash, Evan