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Howdy! The fortran build is complaining because it can't figure out how to map C functions into fortran. On the xlf compilers I test on, this works, but those are AIX-based, I don't have a mac XLF compiler. If you don't need the fortran API, the easiest things to do would be to set FC='' and try again, and it will skip the fortran build. If you do need fortran, then try setting CPPFLAGS to -Df2cFortran and trying again. If that doesn't work, try setting it to -DpgiFortran. In all cases do a "make distclean" before rerunning configure to make sure you are starting clean each time. Let me know if this works for you. Thanks! Ed Ticket Details =================== Ticket ID: QGU-910017 Department: Support netCDF Priority: Normal Status: Open