#!/bin/bash
#
# $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/build_options/linux_amd64_ifort,v 1.7 2010/03/22 19:47:52 jmc Exp $
# $Name: checkpoint63a $
#

# Composed and tested by ce107 on ross/weddell (Opteron system)
# Should work fine on EM64T and other AMD64 compatible Intel systems
# a) Processor specific flags:
#    1) for more speed on Core2 processors replace -xW with -xT
#    2) for more speed on Pentium4 based EM64T processors replaces -xW with -xP
# b) For more speed, provided your data size doesn't exceed 2GB you can
# remove -fPIC which carries a performance penalty of 2-6%.
# c) Provided that the libraries you link to are compiled with -fPIC this
# optfile should work.
# d) You can replace -fPIC with -mcmodel=medium which may perform faster
# than -fPIC and still support data sizes over 2GB per process but all
# the libraries you link to must be compiled with -fPIC or -mcmodel=medium
# e) Changed from -O3 to -O2 to avoid buggy Intel v.10 compilers. Speed
# impact appears to be minimal.

#-------
# 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
#-------

FC=ifort
F90C=ifort
CC=icc
LINK='ifort -i-dynamic -no-ipo'

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

NOOPTFLAGS='-O0 -g -m64 -fPIC'
NOOPTFILES=''

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

if test "x$DEVEL" != x ; then
    FFLAGS="$FFLAGS -w95 -W0 -WB -convert big_endian -assume byterecl -fPIC -O0 -g -noalign -fpstkchk -check all -fpe0 -traceback -ftrapuv -fpmodel except -warn all"
else
    FFLAGS="$FFLAGS -w95 -W0 -WB -convert big_endian -assume byterecl -fPIC"
fi
#- might want to use '-r8' for fizhi pkg:
#FFLAGS="$FFLAGS -r8"

#  Note that the -mp switch is for ieee "maintain precision" and is
#  roughly equivalent to -ieee
if test "x$IEEE" = x ; then
    #  No need for IEEE-754
    FOPTIM='-O2 -align -xW -ip'
else
    #  Try to follow IEEE-754
    FOPTIM='-O2 -align -xW -ip -mp'
fi
F90FLAGS=$FFLAGS
F90OPTIM=$FOPTIM
CFLAGS='-O2 -ip -fPIC'

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