How do I configure the makefile to support the ncep local defined rotated lat-lon grid
edit grib2/makefile
   USE_IPOLATES=1
   USE_SPECTRAL=0

How do I configure the makefile to support the WMO defined rotated lat-lon grid
edit grib2/makefile  (default)
   USE_IPOLATES=3
   USE_SPECTRAL=1

How do I configure the makefile to support netcdf4?
edit grib2/makefile
   USE_NETCDF3=0
   USE_NETCDF4=1
Note: you will be prompted to download the netcdf4 and hdf5 libraries
in order to complete the make.


How do I compile on NCEP's WCOSS2 system

export CC=icc
export FC=ifort
export COMP_SYS=intel_linux
make 
(fails)
cp lib64/*.a lib/
make

comment: WCOSS2 has altered how libraries are compiled using configure.
Normally libraries are built in lib/; however, a local routine puts the
libraries in lib64/.  Since this behavor has only been observed in
WCOSS2, no fixes to the makefile ar planned.


How do I compile on NCEP's workstations

edit grib2/makefile
cd (whatever)/grib2
vi makefile
change 
USE_AEC=1
to
USE_AEC=0
change
USE_JASPER=0
to
USE_JASPER=1
change
USE_OPENJPEG=1
to
USE_OPENJPEG=0

(from bash)
export CC=gcc
export FC=gfortran
make