#!/bin/bash
#
#  $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/build_options/linux_ia32_g77,v 1.30 2013/07/22 18:40:45 jmc Exp $
#  $Name:  $
#
#  tested on  faulks with gcc-g77 v3.4.6 (with FC 6)
#  tested with MPI on (old) aces cluster (gcc-g77 3.3.3, FC 2), using:
#       module add mpich/gnu
#       export MPI_INC_DIR=/usr/local/pkg/mpich/mpich-gcc/include

if test "x$MPI" = xtrue ; then
  CC='mpicc'
  FC='mpif77'
  LINK=$FC
else
  CC='gcc'
  FC='g77'
  LINK=$FC
fi

DEFINES='-D_BYTESWAPIO -DWORDLENGTH=4 -DNML_EXTENDED_F77'
CPP='cpp  -traditional -P'
EXTENDED_SRC_FLAG='-ffixed-line-length-132'
GET_FC_VERSION="--version"

NOOPTFLAGS='-O0'
NOOPTFILES=''

has_sse2=f
grep flags /proc/cpuinfo | grep sse2 > /dev/null 2>&1  &&  has_sse2=t

FFLAGS="$FFLAGS -Wimplicit -Wunused"

if test "x$IEEE" = x ; then     #- with optimisation:
   #- note(jmc): on aces, sse & sse2 are faster; -O3 is not always faster than -O2
    if test "x$has_sse2" = xt ; then
        FFLAGS="$FFLAGS -mfpmath=sse -msse -msse2"
    fi
   #FOPTIM='-O3 -malign-double -funroll-loops'
   # Problems with "-funroll-loops" for some set-up, e.g. tutorial_held_suarez_cs
    FOPTIM='-O3 -malign-double'
else                            #- no optimisation + IEEE :
    if test "x$has_sse2" = xt ; then
        FFLAGS="$FFLAGS -mfpmath=sse -msse -msse2"
    else
        FFLAGS="$FFLAGS -ffloat-store"
    fi
    FOPTIM='-O0 -malign-double'
fi

CFLAGS="-O0"
GSLINC=''
GSLLIB='-lgsl -lgslcblas'
PAPIINC='-I/usr/local/pkg/papi/papi-3.0.8.1/p4/include'
PAPILIB='-L/usr/local/pkg/papi/papi-3.0.8.1/p4/lib -lpapi'

INCLUDEDIRS=''
INCLUDES=''
LIBS=''

if test -d /usr/include/netcdf-3 ; then
    INCLUDES='-I/usr/include/netcdf-3'
    if test -d /usr/lib/netcdf-3 ; then
        if test -f /usr/lib/netcdf-3/libnetcdf_g77.a ; then
            LIBS='-L/usr/lib/netcdf-3 -lnetcdf_g77'
        else
            LIBS='-L/usr/lib/netcdf-3'
        fi
    fi
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'
fi

if [ -n "$MPI_INC_DIR" -a "x$MPI" = xtrue ] ; then
    INCLUDES="$INCLUDES -I$MPI_INC_DIR"
    INCLUDEDIRS="$INCLUDEDIRS $MPI_INC_DIR"
    #- used for parallel (MPI) DIVA
    MPIINCLUDEDIR="$MPI_INC_DIR"
   #MPI_HEADER_FILES='mpif.h mpiof.h'
fi