I have an embedded box running 2.6.18 linux with rt patch. I am developing an userspace application which need timer_create() . I have a big desktop machine with a 4 GB ram, running only linux 2.6.18 ( not rt linux ) . I would like to compile and test it on this Desktop PC . I compiled my program and linked with librt.a on my Desktop PC. But when i run my program , it says undefined symbol: pthread_once what could be the problem, ??? -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html