#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2017 OpenCFD Ltd.
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM.
#
#     OpenFOAM is free software: you can redistribute it and/or modify it
#     under the terms of the GNU General Public License as published by
#     the Free Software Foundation, either version 3 of the License, or
#     (at your option) any later version.
#
#     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
#     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
#     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
#     for more details.
#
#     You should have received a copy of the GNU General Public License
#     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
#
# Script
#     makeMGridGen
#
# Description
#     Build script for MGridGen (serial)
#
# ----------------------------------------------
# NO USER-CONFIGURABLE SETTINGS WITHIN THIS FILE
#------------------------------------------------------------------------------
# Run from ThirdParty directory only
wmakeCheckPwd "$WM_THIRD_PARTY_DIR" || {
    echo "Error: Current directory is not \$WM_THIRD_PARTY_DIR"
    echo "    The environment variables are inconsistent with the installation."
    echo "    Check the OpenFOAM entries in your dot-files and source them."
    exit 1
}
. etc/tools/ThirdPartyFunctions
#------------------------------------------------------------------------------

# mgridgen version from OpenFOAM etc/config.sh file:
_foamEtc config.sh/mgridgen

mgridgenPACKAGE=${MGRIDGEN_VERSION:-mgridgen-none}

#------------------------------------------------------------------------------
usage() {
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

usage: ${0##*/} [OPTION] [mgridgen-VERSION]
options:
  -gcc              Force gcc/g++ instead of the values from \$WM_CC, \$WM_CXX
  -help

* Build MGridGen
      $mgridgenPACKAGE

USAGE
    exit 1
}

#------------------------------------------------------------------------------
# Compiler settings for CMake/configure
[ -n "$WM_CC" ]  && export CC="$WM_CC"
[ -n "$WM_CXX" ] && export CXX="$WM_CXX"

# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help)
        usage
        ;;
    -gcc)
        useGcc  # Use gcc/g++
        ;;
    mgridgen-[1-9]* | MGridGen-[1-9]* | parmgridgen-[1-9]* | ParMGridGen-[1-9]*)
        mgridgenPACKAGE="${1%%/}"
        ;;
    *)
        die "unknown option/argument: '$1'"
        ;;
    esac
    shift
done

[ -n "$mgridgenPACKAGE" ] || die "The mgridgen-VERSION was not specified"

# nothing to build
if _foamIsNone "$mgridgenPACKAGE"
then
    echo "Using mgridgen-none (skip ThirdParty build of MGridGen)"
    exit 0
elif _foamIsSystem "$mgridgenPACKAGE"
then
    echo "Using mgridgen-system"
    exit 0
fi

#------------------------------------------------------------------------------
#
# Build MGridGen

#   MGRIDGEN_SOURCE_DIR : location of the original sources
#   MGRIDGEN_ARCH_PATH  : installation directory

MGRIDGEN_SOURCE_DIR=$WM_THIRD_PARTY_DIR/$mgridgenPACKAGE
MGRIDGEN_ARCH_PATH=$installBASE$WM_PRECISION_OPTION$WM_LABEL_OPTION/$mgridgenPACKAGE

: ${FOAM_MPI:=dummy}

echo
echo ========================================
echo "Build mgridgen library $mgridgenPACKAGE"
echo

#
# Manual installation
#
install()
{
   echo "Install into $MGRIDGEN_ARCH_PATH"

   local bindir=$MGRIDGEN_ARCH_PATH/bin
   local incdir=$MGRIDGEN_ARCH_PATH/include
   local libdir=$MGRIDGEN_ARCH_PATH/lib$WM_COMPILER_LIB_ARCH

   for dir in $MGRIDGEN_ARCH_PATH $bindir $incdir $libdir
   do
       mkdir -m 0755 -p $dir
   done

   cp -vf mgridgen.h   $incdir
   cp -vf libmgrid.a   $libdir
   cp -vf mgridgen     $bindir

   chmod -R 0644 $incdir/* $libdir/*
   chmod -R 0755 $bindir/*
}


# Needs future adjustment
# - for shared library
# - for mpi-specific library locations
if [ -f $MGRIDGEN_ARCH_PATH/include/mgridgen.h \
  -a -r $MGRIDGEN_ARCH_PATH/lib$WM_COMPILER_LIB_ARCH/libmgrid.a ]
then
    echo "    MGridGen header in $MGRIDGEN_ARCH_PATH/include"
    echo "    MGridGen libs   in $MGRIDGEN_ARCH_PATH/lib$WM_COMPILER_LIB_ARCH" # static
    echo
else
(
    cd $MGRIDGEN_SOURCE_DIR || exit 1
    [ -e Makefile ] && make realclean 2>/dev/null

    # Remove any existing build folder and recreate
    rm -rf $MGRIDGEN_ARCH_PATH

    serial="${CC:-$WM_CC}"   # CC (serial compiler)   default=cc
    # parallel=$(whichMpicc)   # PARCC (parallel compiler) default=mpicc
    # PARCC=$parallel
    # PARLD=$parallel
    # PARLIBS="-L../.. -lparmgrid -lmgrid -lm"

    make \
        COPTIONS="-fPIC"  \
        LDOPTIONS="-fPIC" \
        CC=$serial \
        LD=$serial \
        LIBDIR="-L../.." \
        LIBS="-L../.. -lmgrid -lm" \
        make=make \
        serial \
    && install \
    && echo "Built: $mgridgenPACKAGE"
) || {
    echo "Error building: $mgridgenPACKAGE"
}
fi

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