netcdf @4.7.0_1 configure failure

[eugloor]

Here is what I tried to do but did not succeed - many thanks for any suggestions what I should do differently.

sudo port install nco

....

--->  Computing dependencies for netcdf
--->  Fetching archive for netcdf
Warning: Your DNS servers incorrectly claim to know the address of nonexistent hosts. This may cause checksum mismatches for some ports. See this page for more information: <https://trac.macports.org/wiki/MisbehavingServers>
--->  Attempting to fetch netcdf-4.7.0_1+cdf5+dap+netcdf4.darwin_19.x86_64.tbz2 from https://packages.macports.org/netcdf
--->  Attempting to fetch netcdf-4.7.0_1+cdf5+dap+netcdf4.darwin_19.x86_64.tbz2 from http://lil.fr.packages.macports.org/netcdf
--->  Attempting to fetch netcdf-4.7.0_1+cdf5+dap+netcdf4.darwin_19.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/netcdf
--->  Fetching distfiles for netcdf
--->  Attempting to fetch netcdf-c-4.7.0.tar.gz from http://lil.fr.distfiles.macports.org/netcdf
--->  Verifying checksums for netcdf                                                 
--->  Extracting netcdf
--->  Applying patches to netcdf
--->  Configuring netcdf
Error: Failed to configure netcdf: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_netcdf/netcdf/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port netcdf failed

[jmroot (Joshua Root)]

Please attach the log.