Hi John, This is definitely a problem with GCC 4.7. I haven't tracked down the portion of code that is causing the error but I believe I will need to update our program since this is no longer solved with the -fno-whole-file flag. I'll keep you posted. Michael James Unidata Ticket Details =================== Ticket ID: UUL-150899 Department: Support GEMPAK Priority: Normal Status: Open