Hi David, I'm not sure what the problem is, but it looks like the pgf77 compiler can't find some pgf90 runtime support library functions when trying to build nf_test, such as pgf90_alloc. Are you sure the PGI compilers are properly installed? Have you successfully linked any other simple Fortran progrsm using pgf77? --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: DXE-206516 Department: Support netCDF Priority: Normal Status: Closed