#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2017-2020 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# Script
#     makeMGridGen
#
# Description
#     Build script for MGridGen (serial)
#
# ----------------------------------------------
# NO USER-CONFIGURABLE SETTINGS WITHIN THIS FILE
#------------------------------------------------------------------------------
# Run from ThirdParty directory only
cd "${0%/*}" || exit
wmakeCheckPwd "$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:
_foamConfig 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:
  -force        Force compilation, even if include/library already exists
  -gcc          Force use of gcc/g++
  -help

* Build MGridGen
      $mgridgenPACKAGE

USAGE
    # showDownloadHint GRIDGEN
    exit 1
}
#------------------------------------------------------------------------------
exportCompiler          # Compiler info for CMake/configure

unset optForce

# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    '') ;;      # Ignore empty
    -h | -help) usage   ;;
    -gcc)       useGcc  ;;
    -force)     optForce=true ;;

    mgridgen-[0-9]* | MGridGen-[0-9]* | parmgridgen-[0-9]* | ParMGridGen-[0-9]*)
        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_SIZE_OPTIONS/$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 [ -z "$optForce" ] \
&& [ -f "$MGRIDGEN_ARCH_PATH/include/mgridgen.h" ] \
&& {
     [ -r "$MGRIDGEN_ARCH_PATH/lib/libmgrid.a" ] \
  || [ -r "$MGRIDGEN_ARCH_PATH/lib$WM_COMPILER_LIB_ARCH/libmgrid.a" ]
}
then
    echo "    MGridGen already built : $MGRIDGEN_ARCH_PATH"
else
(
    cd "$MGRIDGEN_SOURCE_DIR" || exit
    [ -e Makefile ] && make realclean 2>/dev/null

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

    serial="$(whichCC)"             # CC (serial compiler) default=gcc
    # parallel=$(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"
    exit 1
}
fi

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