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#----------------------------------*-sh-*--------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
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#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2018-2020 OpenCFD Ltd.
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#------------------------------------------------------------------------------
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# Script
#     have_ccmio
#
# Description
#     Detection/setup of CCMIO
#
# Requires
#     config.sh/ccmio
#
# Functions provided
#     have_ccmio, no_ccmio, echo_ccmio, query_ccmio
#
# Variables set on success
#     HAVE_CCMIO
#     CCMIO_ARCH_PATH
#     CCMIO_INC_DIR
#     CCMIO_LIB_DIR
#
#------------------------------------------------------------------------------
. ${WM_PROJECT_DIR:?}/wmake/scripts/sysFunctions    # General system functions

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

# Reset variables
no_ccmio()
{
    unset HAVE_CCMIO CCMIO_INC_DIR CCMIO_LIB_DIR
    return 0
}

# Report
echo_ccmio()
{
    echo "ccmio=${HAVE_CCMIO:-false}"
    echo "root=$CCMIO_ARCH_PATH"
    echo "include=$CCMIO_INC_DIR"
    echo "library=$CCMIO_LIB_DIR"
}


# Query settings
query_ccmio()
{
    local config="config.sh/ccmio"
    local settings

    if settings="$("$WM_PROJECT_DIR"/bin/foamEtcFile -mode=o "$config")"
    then
        . "$settings"
        _process_query ccmio "$CCMIO_ARCH_PATH"
    else
        echo "(no $config settings)" 1>&2
        echo "ccmio=unknown"
    fi
}


# On success, return 0 and export variables
# -> HAVE_CCMIO, CCMIO_INC_DIR, CCMIO_LIB_DIR
have_ccmio()
{
    local config="config.sh/ccmio"
    local prefix header library incName libName settings warn
    warn="==> skip ccmio"

    if settings="$("$WM_PROJECT_DIR"/bin/foamEtcFile "$config")"
        . "$settings"
    else
        [ -n "$warn" ] && echo "$warn (no $config settings)"
        return 2
    # Expected location, include/library names
    # Link with static libccmio only (fewer issues)
    prefix="$CCMIO_ARCH_PATH"
    incName="libccmio/ccmio.h"
    libName="libccmio.a"
    # ----------------------------------
    if isNone "$prefix"
    then
        [ -n "$warn" ] && echo "$warn (disabled)"
        return 1
    elif hasAbsdir "$prefix"
        header=$(findFirstFile "$prefix/include/$incName")
        library="$(findExtLib $libName)"
    # ----------------------------------
    [ -n "$header" ] || {
        [ -n "$warn" ] && echo "$warn (no header)"
        return 2
    }

    # Library
    [ -n "$library" ] || library=$(findLibrary \
        "$prefix/lib/$libName" \
        "$prefix/lib$WM_COMPILER_LIB_ARCH/$libName" \
    ) || {
        [ -n "$warn" ] && echo "$warn (no library)"
    # ----------------------------------

    # The libccmio uses int32_t.
    # The OpenFOAM adapter thus requires additional work for 64-bit labels.
    # The OpenFOAM adapter was originally only designed for 'double'

    if [ "$WM_LABEL_SIZE" = 32 ]
    then
        if [ "$WM_PRECISION_OPTION" = DP ]
        then
            good=true
        else
            [ -n "$warn" ] && echo "$warn (double precision only)"
            no_ccmio
            return 1
        fi
    else
        [ -n "$warn" ] && echo "$warn (32-bit labels only)"
        no_ccmio
        return 1
    fi


    header="${header%/*}"   # Strip one-level (include/libccmio/...)

    # OK
    export HAVE_CCMIO=true
    export CCMIO_ARCH_PATH="$prefix"
    export CCMIO_INC_DIR="${header%/*}"     # Basename
    export CCMIO_LIB_DIR="${library%/*}"    # Basename
}


# Force reset of old variables
no_ccmio

# Test/query
case "$1" in
-test)
    have_ccmio
    echo_ccmio
    ;;
-query)
    query_ccmio
    ;;
esac

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