#!/bin/bash
#
#  $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/build_options/linux_amd64_gfortran,v 1.3 2007/08/20 20:31:00 ce107 Exp $
#  $Name:  $
#

#  Tested with gcc-gfortran v4.0.x as shipped with Fedora Core 4.
#  It fixes the ' \' versus ' &' terminator problem but some 
#  namelist problems remain.  The biggest seems to be the inability
#  of current gfortran versions to support namelist syntax such as:
#
#     fields(1,1) = 'UVELSLT ','VVELSLT ','WVELSLT ',
#
#  which results in run-time errors.


FC=gfortran
F90C=gfortran
CC=gcc
DEFINES='-DWORDLENGTH=4 -DNML_TERMINATOR'
CPP='cpp  -traditional -P'
NOOPTFLAGS='-O0'

if test "x$DEVEL" != x ; then
    FFLAGS='-g -Wall -W -ffpe-trap=invalid,zero,overflow -fbounds-check'
else
    FFLAGS=''
fi

# Requires gfortran from 2006 onwards for -fconvert=big-endian
FFLAGS="$FFLAGS -fconvert=big-endian -fimplicit-none"

if test "x$IEEE" = x ; then
    #  No need for IEEE-754
    FOPTIM='-O3 -funroll-loops'
else
    #  Try to follow IEEE-754
    FOPTIM='-O0'
fi
F90FLAGS=$FFLAGS
F90OPTIM=$FOPTIM
CFLAGS=$FOPTIM

if [ "x$NETCDF_ROOT" != x ] ; then
    INCLUDEDIR="${NETCDF_ROOT}/include"
    INCLUDES="-I${NETCDF_ROOT}/include"
    LIBDIR="${NETCDF_ROOT}/lib"
    LIBS="-L${NETCDF_ROOT}/lib"
elif [ "x$NETCDF_HOME" != x ]; then
    INCLUDEDIR="${NETCDF_HOME}/include"
    INCLUDES="-I${NETCDF_HOME}/include"
    LIBDIR="${NETCDF_HOME}/lib"
    LIBS="-L${NETCDF_HOME}/lib"
elif [ "x$NETCDF_INC" != x -a "x$NETCDF_LIB" != x ]; then
    NETCDF_INC=`echo $NETCDF_INC | sed 's/-I//g'`
    NETCDF_LIB=`echo $NETCDF_LIB | sed 's/-L//g'`
    INCLUDEDIR="${NETCDF_INC}"
    INCLUDES="-I${NETCDF_INC}"
    LIBDIR="${NETCDF_LIB}"
    LIBS="-L${NETCDF_LIB}"
elif [ "x$NETCDF_INCDIR" != x -a "x$NETCDF_LIBDIR" != x ]; then
    INCLUDEDIR="${NETCDF_INCDIR}"
    INCLUDES="-I${NETCDF_INCDIR}"
    LIBDIR="${NETCDF_LIBDIR}"
    LIBS="-L${NETCDF_LIBDIR}"
elif test -d /usr/include/netcdf-3 ; then
    INCLUDES='-I/usr/include/netcdf-3'
    LIBS='-L/usr/lib/netcdf-3 -L/usr/lib64/netcdf-3'
elif test -d /usr/include/netcdf ; then
    INCLUDES='-I/usr/include/netcdf'
elif test -d /usr/local/netcdf ; then
    INCLUDES='-I/usr/local/netcdf/include'
    LIBS='-L/usr/local/netcdf/lib'
elif test -d /usr/local/include/netcdf.inc ; then
    INCLUDES='-I/usr/local/include'
    LIBS='-L/usr/local/lib64'
fi