1.7 Compiling and Linking with the NetCDF Library
Details of how to compile and link a program that uses the netCDF C or
FORTRAN interfaces differ, depending on the operating system, the
available compilers, and where the netCDF library and include files
are installed. Nevertheless, we provide here examples of how to
compile and link a program that uses the netCDF library on a Unix
platform, so that you can adjust these examples to fit your
installation.
Every Fortran 90 procedure or module which references netCDF constants
or procedures must have access to the module information created when
the netCDF module was compiled. The suffix for this file depends on
the compiler, but is often .MOD. Most Fortran 90 compilers do not
allow you to specify an alternative location for this file as you
might the location of external libraries. The simplest solution,
therefore, is to create a symbolic link from the directory in which
your code resides to the location of the pre-compiled netCDF
module. For example:
ln -s /usr/local/netcdf/src/f90/netcdf.mod .
You may then compile source files which reference netCDF constants or
procedures.
f90 -c mymodule.f90
Unless the netCDF library is installed in a standard directory where
the linker always looks, you must use the -L and -l options to link an
object file that uses the netCDF library. For example:
f90 -o myprogram myprogram.o -L/usr/local/netcdf/lib -lnetcdf
