Unfortunately, we do not have that configuration here. I was able to make it work using gcc on AIX 5.1, but we do not appear to have xlc. I guess we will have to fix this the hard way. If you can send me the make output, I will try to add in the necessary fixes. This may take some time, though. =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: NIM-980391 Department: Support netCDF Priority: Normal Status: Open