#! /usr/bin/env bash
#
#  $Header: /u/gcmpack/MITgcm/tools/build_options/linux_amd64_pathf90+mpi,v 1.2 2011/08/18 22:04:49 jmc Exp $
#  $Name:  $
#
# Build options for PathScale (EKOPATH) Compiler on Linux x86-64
# tested with PathScale version 4.0.10 on acesgrid (Linux 2.6.38.8-35.fc15.x86_64),
#   using:
#          module load ekopath
#   and with mpich1:
#          module load mvapich1
#   or  with mpich2:
#          module load mvapich2
#   or  with openmpi
#          module load openmpi

#-------
# run with OpenMP: needs to set environment var. OMP_NUM_THREADS
#    and generally, needs to increase the thread stack-size:
#   -  sh,bash:
#     > export OMP_NUM_THREADS=2
#     > export PSC_OMP_STACK_SIZE=400m
#   - csh,tcsh:
#     > setenv OMP_NUM_THREADS 2
#     > setenv PSC_OMP_STACK_SIZE 400m
#-------

CC=mpicc
FC=mpif90
LINK=mpif90

DEFINES='-DWORDLENGTH=4'
CPP='cpp -traditional -P'
EXTENDED_SRC_FLAG='-extend-source'
GET_FC_VERSION="--version"
OMPFLAG='-openmp'
#OMPFLAG='-openmp -OPT:early_mp=ON'

NOOPTFLAGS='-O0 -g'
NOOPTFILES=''

FFLAGS="$FFLAGS -m64 -fPIC -convert big_endian"
#- might want to use '-r8' for fizhi pkg:
#FFLAGS="$FFLAGS -r8"

if test "x$IEEE" = x ; then     #- with optimisation:
   #- full optimisation, trips over MITgcm code because of compiler problems:
   #FOPTIM='-Ofast -LNO:fusion=2 -funsafe-math-optimizations'
   #- high optimisation (-O3), might find Pb with few S/R; fully safe: switch to -O2:
    FOPTIM='-O3 -LNO:fusion=2 -funsafe-math-optimizations'
else
  if test "x$DEVEL" = x ; then  #- no optimisation + IEEE :
    FOPTIM='-O0 -OPT:roundoff=0:IEEE_arithmetic=1 -fmath-errno -fno-fast-math'
  else                          #- development/check options:
    FFLAGS="$FFLAGS -ffortran-bounds-check -trapuv -g"
    FOPTIM='-O0 -OPT:roundoff=0:IEEE_arithmetic=1 -fmath-errno -fno-fast-math'
  fi
fi

F90FLAGS=$FFLAGS
F90OPTIM=$FOPTIM
CFLAGS='-O0 -m64 -fPIC'
GSLLIB='-lgsl -lgslcblas'

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 "$MPI_INC_DIR" ]; then
    INCLUDES="$INCLUDES -I$MPI_INC_DIR"
    INCLUDEDIRS="$INCLUDEDIRS $MPI_INC_DIR"
    MPIINCLUDEDIR="$MPI_INC_DIR"
    MPI_HEADER_FILES='mpif.h mpiof.h'
    MPI_HEADER_FILES_INC='./mpi_headers/mpif.h ./mpi_headers/mpiof.h'
fi