I am gnew to gnu and am trying to write a very simple program using threads. I am getting what we microsofties would call an 'unresolved external' flagging pthread_create() and pthread_join(), the only 2 thread functions I am calling ( I found the iostream stuff fine ). Obviously, I am missing a library, but have not gotten a truly unambiguous pointer to (1) exactly which files do I need; (2) are they preinstalled with red hat 5 if I select all C and C++ dev tools upon OS installation; (3) which cmd line syntax must I use to get the libs included ( I have used various combinations of -l and -L for hours). I have used objdump on various suspicious-looking libraries (libg++.so.2.7.2, libg++.so.*, plus some libc5 stuff too) without finding any pthread*() functions. So, campers - where are those functions, and how can I link them in? Please be explicit, as I am new to this environment. Thanks gobs Eric -- The opinions expressed in this message are my own personal views and do not reflect the official views of the Microsoft Corporation. -- PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES! http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject.