#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2017-2021 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
#------------------------------------------------------------------------------
if :    # Run from third-party directory
then
    cd "${0%/*}" || exit
    wmakeCheckPwd "$WM_THIRD_PARTY_DIR" 2>/dev/null || {
        echo "Error (${0##*/}) : not located in \$WM_THIRD_PARTY_DIR"
        echo "    Check your OpenFOAM environment and installation"
        exit 1
    }
fi
. "${WM_THIRD_PARTY_DIR:?}"/etc/tools/ThirdPartyFunctions
#------------------------------------------------------------------------------
# Obtain version from OpenFOAM etc/config.sh file:
_foamConfig mgridgen

PACKAGE="${MGRIDGEN_VERSION:-none}"

#------------------------------------------------------------------------------
printVersions() { listPackageVersions mgridgen parmgridgen; exit 0; }
printHelp() {
    cat<<USAGE

Usage: ${0##*/} [OPTION] [mgridgen-VERSION]
options:
  -force        Force compilation, even if include/library already exists
  -gcc          Force use of gcc/g++
  -list         List available unpacked source versions
  -help         Display usage help

* Build MGridGen with
      ${PACKAGE:-[unspecified]}

USAGE
    # showDownloadHint gridgen
    exit 0   # Clean exit
}
#------------------------------------------------------------------------------
exportCompiler          # Compiler info for CMake/configure

unset optForce

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

    mgridgen/* | sources/*gridgen* | sources/*GridGen* | \
    mgridgen-[0-9]* | MGridGen-[0-9]* | \
    parmgridgen-[0-9]* | ParMGridGen-[0-9]*)
        PACKAGE="${1%%/}"
        ;;
    *)
        die "unknown option/argument: '$1'"
        ;;
    esac
    shift
done

if [ -z "$PACKAGE" ]
then
    die "The MGRIDGEN package/version not specified"
elif _foamIsNone "$PACKAGE" || _foamIsSystem "$PACKAGE"
then
    echo "Using none/system (skip ThirdParty build of MGRIDGEN)"
    exit 0
fi

#------------------------------------------------------------------------------
#
# Build MGridGen
#   *PACKAGE : name-version of the package
#   *SOURCE  : location of original sources
#   *PREFIX  : installation directory

PKG_SOURCE="$(findSourceDir "$PACKAGE")"
PACKAGE="$(basename "$PACKAGE")"
PKG_PREFIX="$installBASE$WM_SIZE_OPTIONS/$PACKAGE"
export GIT_DIR="$PKG_SOURCE/.git"

: "${FOAM_MPI:=dummy}"

echo
echo ========================================
echo "Build mgridgen library $PACKAGE"
echo

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

    local bindir="$PKG_PREFIX"/bin
    local incdir="$PKG_PREFIX"/include
    local libdir="$PKG_PREFIX/lib$WM_COMPILER_LIB_ARCH"

    for dir in "$PKG_PREFIX" "$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 "$optForce" ] \
&& [ -f "$PKG_PREFIX/include/mgridgen.h" ] \
&& {
     [ -r "$PKG_PREFIX/lib/libmgrid.a" ] \
  || [ -r "$PKG_PREFIX/lib$WM_COMPILER_LIB_ARCH/libmgrid.a" ]
}
then
    echo "    MGridGen already built : $PKG_PREFIX"
else
(
    cd "$PKG_SOURCE" || exit
    [ -e Makefile ] && make realclean 2>/dev/null

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

    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: $PACKAGE"
) || {
    echo "Error building: $PACKAGE"
    exit 1
}
fi

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