Hay anyone else come across this? The only thing I think is different was switching to Mavericks, but I get this warning. include/seqan/system/system_sema.h:110:24: warning: 'sem_destroy' is deprecated [-Wdeprecated-declarations] bool res = sem_destroy(hSemaphore); ^ /usr/include/sys/semaphore.h:53:5: note: 'sem_destroy' has been explicitly marked deprecated here int sem_destroy(sem_t *) __deprecated; Jordan