#!/bin/bash
#
#  $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/build_options/Attic/linux_amd64_ifort+mpi_beagle,v 1.4 2009/09/23 18:38:33 jmc Exp $
#  $Name:  $
#
#  These are the build options used with the Intel 10.x compiler for
#  testing on Beagle.
#
#  Use after
#
#    module add darwin
#    module add mitgcm
#
#  (tested with darwin/20090605 mitgcm/20090605, i.e.,
#  intel/10.0.025 mx/1.0 netcdf/3.6.2/intel-10.0.025 mpich-mx/1.2.7..7/intel-10.0.025)
#
#  These modules set FFLAGS, CFLAGS and CPPFLAGS for mpich and netcdf.
#
#  The SGE -V option for exporting environment variables may also be
#  helpful if you encounter missing-library problems.  Or,
#  alternatively, one may choose to link with one of the intel
#  "-static" or "-i-static" flags.

FC='mpif77'
CC='mpicc'
F90C='mpif90 -fixed -c '
LINK='mpif77'
INCLUDES="$CPPFLAGS"
LIBS="$LDFLAGS"

# -DIFORT turns on ifort-specific declarations in darwin (RAND is not an intrinsic)
DEFINES='-DALLOW_USE_MPI -DALWAYS_USE_MPI -DWORDLENGTH=4 -DIFORT'
CPP='cpp  -traditional -P'
EXTENDED_SRC_FLAG='-132'
#OMPFLAG='-openmp'

NOOPTFILES='mds_byteswapr8.F mds_byteswapr4.F mds_byteswapi4.F mom_calc_ke.F mon_ke.F'

if test "x$IEEE" = x ; then
    #  No need for IEEE-754
    NOOPTFLAGS='-O2'
    FOPTIM='-O3 -align'
    # ifort options:
    # -132        fixed-form line length is 132 characters
    # -r8         REAL is REAL*8
    # -i4         INTEGER is INTEGER*4
    # -w95        don't warn about use of Fortran 95 extensions
    # -W0         disable all warning messages
    # -WB         turns a compile-time bounds check error into a warning
    # -xT         optimize for Intel Core2 and Xeon 51xx
    # -fno-alias  don't assume aliasing (assume that different variables DON'T refer to the same memory location) 
    # -assume byterecl     record length in OPEN statements is in bytes
    # -convert big_endian  binary files contain big-endian data
    # -shared-intel        avoids static library mismatch (?)
    FFLAGS="$FFLAGS -r8 -i4 -w95 -W0 -WB -xT -fno-alias -assume byterecl -convert big_endian -shared-intel" 
else
    #  Try to follow IEEE-754
    NOOPTFLAGS='-O0'
    # -CB         check bounds
    # FOPTIM='-O0 -noalign -CA -CB -CU -CV -CS'
    FOPTIM='-O0 -noalign'
    # -pc64       round floating point values to 64 bits
    # one could also try
    # -mp         maintain precision
    FFLAGS="$FFLAGS -pc64 -r8 -i4 -w95 -W0 -WB -xT -fno-alias -assume byterecl -convert big_endian -shared-intel" 
fi
F90FLAGS=$FFLAGS
F90OPTIM=$FOPTIM

NOOPTFILES=$NOOPTFILES' mds_byteswap.F'