--->  Configuring netcdf
Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_science_netcdf/work/netcdf-4.0" && ./configure --prefix=/opt/local --enable-shared --enable-netcdf-4 --with-hdf5=/opt/local --with-szlib=/opt/local " returned error 77
Command output: checking whether a location for the HDF5 library was specified... /opt/local
checking whether a location for the ZLIB library was specified...
c
hecking whether a location for the SZLIB library was specified... /opt/local
checking whether netCDF-4 logging is enabled...
checking whether netCDF extra tests should be run (developers only)... no
checking whether documentation is to be installed... no
checking whether Fortran compiler(s) should be tested during configure... yes
checking whether configure should try to set compiler flags... yes
checking whether FFIO will be used... no
checking whether to skip C++, F77, or F90 APIs if compiler is broken
... yes
checking whether only the C library is desired... no
checking whether examples should be built... yes
checking whether F77 API is desired... yes
checking whether F90 API is desired... yes
checking whether fortran type sizes should be checked... yes
checking whether C API is desired... yes
checking where to get netCDF C-only library for separate fortran libraries...
checking whether CXX API is desired... yes
checking whether v2 netCDF API should be built... yes
checking whether the ncgen/ncdump sh
ould be built... yes
checking whether large file (> 2GB) tests should be run... no
checking whether benchmaks should be run (experimental)... no
checking whether extreme numbers should be used in tests... yes
checking where to put large temp files if large file tests are run... .
checking whether a win32 DLL is desired... no
checking whether separate fortran libs are desired... yes
configure: finding C compiler
checking for C compiler default output file name...
configure: error: C compiler cannot create
 executables
See `config.log' for more details.
Error: Unable to upgrade port: 1