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Source code versions:

GRIBEX library have been tested for different machine architectures that exist in ECMWF:

• Decalpha - Compaq Fortran 90, C++ compilers
  
• Hppa - HP Fortran and C compilers
  
• Linux - The Portland Group compilers pgf90 and pgcc, Gnu project gcc, g77, gfortran compilers
  
• Rs6000 - XL Fortran for AIX- C for AIX Compiler, Version 5
  
• Sgimips - MIPSpro F77 compiler- MIPS C compiler
  
• Sun4 - Forte Developer 7 Fortran 95 compiler- SunOS/BSD Compatibility Package C compiler

It is possible to use other options for the compilation of source code versions than those which are offered. For example: modifying the configuration files; changing the level of optimisation; etc. The make utility can be used repeatedly. It will only cause the re-compilation of routines which have been modified since the previous make.

You can install GRIBEX library on Windows only if you have Cygwin linux-like environment for Windows and Gnu compilers.

From 000300 is possible to compile with gcc and g77 on x86 64-bits machines with Linux.

The number of bits in the representation of real numbers can be chosen between 32bits and 64bits for every of compilers apart from the Gnu compilers.

The library is static and its name follows the normal UNIX convention (it starts with lib and ends in .a), so the library can be specified in the compile/link command using the
standard ld convention, for example:

f77 -o program program.f -lgribex

Package contains examples for the GRIB decoding.

From GRIBEX version 000080 onwards, the environment variable GRIBEX_DEBUG
can be set to ON or OFF to switch the debug output from GRIBEX on or off.

From GRIBEX version 000100 onwards, the environment variable GRIBEX_CHECK
can be set to ON or OFF to switch the checking of headers in GRIBEX on or off.

IF build_library SCRIPT IS USED TO BUILD THE LIBRARY AND install SCRIPT TO INSTALL LIBRARY AND TABLES, IT IS NOT NECESSARY TO SET ENVIRONMENTAL VARIABLES BELOW THAT POINT TO THE TABLES!

The location of GRIB tables and template files that contain ECMWF Local definitions could be specified by putting the specification of the environment variables in your startup files(.profile, ...) to ensure you have access to the GRIB tables upon future logins. Thus:

Bourne or Korn shell

ECMWF_LOCAL_TABLE_PATH = "chosen directory"/gribtables/
export ECMWF_LOCAL_TABLE_PATH

LOCAL_DEFINITION_TEMPLATES ="chosen directory"/gribtemplates/
export LOCAL_DEFINITION_TEMPLATES

C-shell

setenv ECMWF_LOCAL_TABLE_PATH "chosen directory"/gribtables/

setenv LOCAL_DEFINITION_TEMPLATES "chosen directory"/gribtemplates/

Please note:

All software items above are available in the format "* .tar.gz" ie gzipped and tarred source for use with Unix or Linux based systems.