#!/bin/bash
#
#  Build options for ifort with impi on Linux AMD64 platform
#
#  Tested on engaging (Centos 6, Centos 7), with or without OpenMP,
#                     with ifort 14.0.2 (20140120) and impi 4.1.3.048
#
#-------

if test "x$MPI" = xtrue ; then
  CC=${MPICC:=mpiicc}
  FC=${MPIFC:=mpiifort}
  F90C=${MPIF90C:=mpiifort}
  LINK="$F90C -shared-intel -no-ipo"
else
  CC=icc
  FC=ifort
  F90C=ifort
  LINK="$F90C -shared-intel"
fi

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

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

#- for setting specific options, check compiler version:
fcVers=`$FC $GET_FC_VERSION | head -n 1 | awk '{print $NF}'`
if ! [[ $fcVers =~ ^[0-9]+$ ]] ; then
  echo "    un-recognized Compiler-release '$fcVers' ; ignored (-> set to 0)" ; fcVers=0 ;
else echo "    get Compiler-release: '$fcVers'" ; fi
if [ $fcVers -ge 20160301 ] ; then
    OMPFLAG='-qopenmp'
fi

if test "x$GENERIC" != x ; then
    PROCF=-axSSE4.2,SSE4.1,SSSE3,SSE3,SSE2
else
    PROCF=-xHost
fi

CFLAGS="-O0 -ip -m64 $PROCF"
FFLAGS="$FFLAGS -m64 -convert big_endian -assume byterecl"
#- for big setups, compile & link with "-fPIC" or set memory-model to "medium":
#CFLAGS="$CFLAGS -fPIC"
#FFLAGS="$FFLAGS -fPIC"
#-  with FC 19, need to use this without -fPIC (which cancels -mcmodel option):
 CFLAGS="$CFLAGS -mcmodel=medium"
 FFLAGS="$FFLAGS -mcmodel=medium"
#- might want to use '-r8' for fizhi pkg:
#FFLAGS="$FFLAGS -r8"

if test "x$IEEE" = x ; then     #- with optimisation:
    FOPTIM="-O2 -align -ip -fp-model source $PROCF"
else
  if test "x$DEVEL" = x ; then  #- no optimisation + IEEE :
    FOPTIM="-O0 -fp-model source -noalign $PROCF"
  else                          #- development/check options:
   #FFLAGS="$FFLAGS -debug all -debug-parameters all -fp-model strict"
    FOPTIM="-O0 -noalign -g -traceback $PROCF"
    NOOPTFLAGS=$FOPTIM
    NOOPTFILES='adread_adwrite.F'
    FOPTIM="$FOPTIM -warn all -warn nounused"
    FOPTIM="$FOPTIM -fpe0 -ftz -fp-stack-check -check all -ftrapuv"
  fi
fi

F90FLAGS=$FFLAGS
F90OPTIM=$FOPTIM

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

if [ "x$NETCDF_ROOT" != x ] ; then
    INCLUDEDIRS="${NETCDF_ROOT}/include"
    INCLUDES="-I${NETCDF_ROOT}/include"
    LIBS="-L${NETCDF_ROOT}/lib64 -L${NETCDF_ROOT}/lib"
elif [ "x$NETCDF_HOME" != x ]; then
    INCLUDEDIRS="${NETCDF_HOME}/include"
    INCLUDES="-I${NETCDF_HOME}/include"
    LIBS="-L${NETCDF_ROOT}/lib64 -L${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/lib64/netcdf-3 -L/usr/lib/netcdf-3'
elif test -d /usr/local/pkg/netcdf ; then
    INCLUDEDIRS='/usr/local/pkg/netcdf/include'
    INCLUDES='-I/usr/local/pkg/netcdf/include'
    LIBS='-L/usr/local/pkg-x86_64/netcdf/lib64 -L/usr/local/pkg-x86_64/netcdf/lib -L/usr/local/pkg/netcdf/lib64 -L/usr/local/pkg/netcdf/lib'
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/lib64 -L/usr/local/netcdf/lib'
elif test -f /usr/local/include/netcdf.inc ; then
    INCLUDEDIRS='/usr/local/include'
    INCLUDES='-I/usr/local/include'
    LIBS='-L/usr/local/lib64 -L/usr/local/lib'
fi

if [ -n "$I_MPI_ROOT" -a -z "$MPI_INC_DIR" ]; then
    MPI_INC_DIR="$I_MPI_ROOT/intel64/include"
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
