Hi, The config.log you sent was output from a configure script for the CDO package, not for netCDF. I think you will have to ask the CDO package developers or maintainers what caused the error. I notice you can send bug reports for CDO to address@hidden Sorry we could not be of help ... --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: QLW-566018 Department: Support netCDF Priority: Normal Status: Closed