Shared Library

Channge grib2/makefile from

   MAKE_SHARED_LIB=0

to

   MAKE_SHARED_LIB=1

Then compile the library by (bash version)

   $ export CC=(your C compiler)
   $ export FC=(your fortran compiler .. if used)
   $ export COMP_SYS=(whatever)    this is usually optional
   $ make lib