Hi, To start over, invoke "make distclean". Then set the environment variable FC to the Fortran compiler you want to use, if it can handle both Fortran 77 and Fortran 90. If you want to different compilers for Fortran 77 and Fortran 90, set the environment variables FC and F90 to the compilers you want to use. Then invoke the "configure" script again, followed by "make check install". More detailed instructions are here: http://www.unidata.ucar.edu/netcdf/docs/netcdf-install/Environment.html Please let us know if there are still problems. --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: SSR-639172 Department: Support netCDF Priority: Normal Status: Closed