#!/bin/bash

# $Header: /u/gcmpack/MITgcm/tools/build_options/linux_ia32_ifort,v 1.18 2013/07/22 18:40:45 jmc Exp $
# $Name:  $

# Build options for the intel fortran compiler - version 9.0 (and earlier) -
#            on Linux IA32 platform

#  tested on faulks (FC.6), with OpenMP, using:
#      (sh, bash):  source /usr/local/pkg/intel/intel_fc_90/bin/ifortvars.sh
#      (csh,tcsh):  source /usr/local/pkg/intel/intel_fc_90/bin/ifortvars.csh
#   [was also tested on hugo (FC.4, FC.9), eddy (FC.5)]
#  and on aces-grid cluster, with OpenMP, using:
#       module add ifc/9.0.021 icc/9.0.021 intel/9.0
#       module add netcdf/3.6.1/icc

# MPI : Tested on aces-grid cluster, using:
#  a) default intel (v8.1) and default mpich/intel:
#       module add mpich/intel
#       module add netcdf/3.6.1/icc
#   e.g.(sh,bash):
#       export MPI_INC_DIR='/usr/local/pkg/mpich/mpich-intel/include'
#   (and run using: mpirun -machinefile my_list_of_nodes)
#
#  b) intel v9.0 and mpich2-intel (+ OpenMPI or not) using, in this order:
#       module add ifc/9.0.021 icc/9.0.021 intel/9.0
#       module add mpich2/1.0.3/intel
#       module add netcdf/3.6.1/icc
#       module add mpiexec             (<-- to run with mpiexec)
#   e.g.(sh,bash):
#       export MPI_INC_DIR='/usr/local/pkg/mpich2/mpich2-1.0.3/intel/include'
#   (and run using mpiexec)

# OpenMP : not working well with version earlier than v.9
#-------
# run with OpenMP: needs to set environment var. OMP_NUM_THREADS
#    and generally, needs to increase the stack-size:
#   -  sh,bash:
#     > export OMP_NUM_THREADS=2
#     > export KMP_STACKSIZE=400m
#   - csh,tcsh:
#     > setenv OMP_NUM_THREADS 2
#     > setenv KMP_STACKSIZE 400m
#-------

if test "x$MPI" = xtrue ; then
  CC='mpicc'
  FC='mpif77'
  F90C=$FC
 #F90C='mpif90'
  LINK=$FC
else
  CC='icc'
  FC='ifort'
  F90C=$FC
  LINK="$FC -i-static"
fi

DEFINES='-DWORDLENGTH=4'
CPP='cpp  -traditional -P'
F90FIXEDFORMAT='-fixed -Tf'
EXTENDED_SRC_FLAG='-132'
GET_FC_VERSION="--version"
OMPFLAG='-openmp'

NOOPTFLAGS='-O0'
NOOPTFILES=''

FFLAGS="$FFLAGS -w95 -W0 -WB -convert big_endian -assume byterecl"
#- might want to use '-r8' for fizhi pkg:
#FFLAGS="$FFLAGS -r8"

if test "x$IEEE" = x ; then     #- with optimisation:
    F90OPTIM='-O3'
    FOPTIM='-O3 -align'
#P3 FOPTIM=$FOPTIM' -tpp6 -xWKM'
#P4 FOPTIM=$FOPTIM' -tpp7 -xWKM'
else
    F90OPTIM='-O0'
  if test "x$DEVEL" = x ; then  #- no optimisation + IEEE :
   #  "-mp" is for ieee "maintain precision"
    FOPTIM='-O0 -noalign'
   #FFLAGS="$FFLAGS -mp"
  else                          #- development/check options:
   #FOPTIM='-O0 -noalign -CB -CU -CV'
    FOPTIM='-O0 -noalign -check all'
    FFLAGS="$FFLAGS -xN -pc64"
    NOOPTFILES='mds_byteswapr8.F mds_byteswapr4.F mds_byteswapi4.F'
    NOOPTFILES=$NOOPTFILES' mitcplr_char2real.F mitcplr_real2char.F'
    NOOPTFILES=$NOOPTFILES' mitcplr_char2int.F mitcplr_int2char.F mds_byteswap.F'
  fi
fi

F90FLAGS=$FFLAGS
#F90OPTIM=$FOPTIM

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

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

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