#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
#    \\/     M anipulation  | Copyright (C) 2016-2017 OpenCFD Ltd.
#------------------------------------------------------------------------------
# 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
#     makeParaView
#
# Description
#     Make and install ParaView 4 or 5.
#     The ParaView sources should be located under one of these locations:
#       - $WM_THIRD_PARTY_DIR/ParaView-VERSION
#       - $WM_THIRD_PARTY_DIR/ParaView-vVERSION
#
#     Note the capitalization of ParaView in the directory names.
#
#------------------------------------------------------------------------------
# Get ParaView_VERSION location from OpenFOAM config file
. $WM_PROJECT_DIR/etc/config.sh/functions
unset -f _foamAddPath _foamAddLib               # get settings only
unset ParaView_VERSION                          # purge current values

_foamSource $($WM_PROJECT_DIR/bin/foamEtcFile config.sh/paraview)

: ${ParaView_VERSION##*-}

#------------------------------------------------------------------------------
# Run from third-party directory only
cd ${0%/*} || exit 1
wmakeCheckPwd "$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
. etc/tools/ParaViewFunctions
#------------------------------------------------------------------------------
#
# USER DEFAULTS:
# ~~~~~~~~~~~~~~

# MESA graphics support:
withMESA=false
MESA_INCLUDE="/usr/include/GL"
MESA_LIBRARY="/usr/lib$WM_COMPILER_LIB_ARCH/libOSMesa.so"

# Python support:
# - The script will try to determine the appropriate python library.
#   If that fails, specify the path using the PYTHON_LIBRARY variable below.
withPYTHON=false
PYTHON_LIBRARY=""
# PYTHON_LIBRARY="/usr/lib$WM_COMPILER_LIB_ARCH/libpython2.6.so.1.0"

# New rendering backend (starting with paraview 5.0).
# Default to auto-config based on paraview version
withGL2=auto

#
# NO FURTHER EDITING BELOW THIS LINE
#
#-----------------------------------------------------------------------------
Script=${0##*/}
usage() {
    : ${ParaView_VERSION:=none} # some dummy value for usage information
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

usage: $Script [OPTION] [paraview-VERSION] [CMAKE-OPTION]
options:
  -gcc              force gcc/g++ instead of the values from \$WM_CC, \$WM_CXX
  -rebuild          for repeated builds (-make -install) *use with caution*
  -gl2              with new rendering backend (if not already enabled)
  -mesa             with mesa (if not already enabled)
  -mesa-prefix DIR  location of mesa installation (sets -mesa-include, -mesa-lib)
  -mesa-include DIR location of mesa headers (current value: ${MESA_INCLUDE:-none})
  -mesa-lib PATH    path to mesa library     (current value: ${MESA_LIBRARY:-none})
  -mpi              with mpi (if not already enabled)
  -mpi=N            with max 'N' mpi processes. N=0 for no upper-limit.
  -python           with python (if not already enabled)
  -python-lib PATH  path to python library   (current value: ${PYTHON_LIBRARY:-none})
  -cmake PATH       with cmake from the path given
  -qmake PATH       with the Qt version corresponding to the qmake path given
  -qt               with extra Qt gui support (if not already enabled)
  -qt-VER           with Qt version corresponding to
                        \$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/qt-VER/bin/qmake
  -verbose          verbose output in Makefiles
  -version VER      specify an alternative version (current value: $ParaView_VERSION)
  -major   VER      specify an alternative major version for special builds
  -buildType NAME   specify the build type (default: Release)
  -help

The -no-FEATURE option can be used to forcibly disable these features:
  -no-gl2 | -no-mesa | -no-mpi | -no-python | -no-qt

CMake options start with a capital letter and contain an '='.
For example,
    $Script BUILD_TESTING=ON
to add tests

For finer control, the build stages can be selected or deselected individually:
  -patch     -no-patch
  -config    -no-config
  -make      -no-make
  -install   -no-install


* Make and install paraview-$ParaView_VERSION located under
      \$WM_THIRD_PARTY_DIR/ParaView-$ParaView_VERSION
  ->  \$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/paraview-$ParaView_VERSION

To make a different paraview version, simply specify on the command-line.
For example,

    ./makeParaview 5.0.1

Or change the \$WM_PROJECT_DIR/etc/config.sh/paraview settings.

USAGE
    exit 1
}
#------------------------------------------------------------------------------
# Ensure CMake gets the correct C/C++ compiler
[ -n "$WM_CC" ]  && export CC="$WM_CC"
[ -n "$WM_CXX" ] && export CXX="$WM_CXX"

# Set initial ParaView_MAJOR based on current value of ParaView_VERSION
setParaViewVersion ${ParaView_VERSION:-none}

#
# Various building stages
#
unset runPATCH runCONFIG runMAKE runINSTALL
runDEFAULT=true

# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help)
        usage
        ;;
    [0-9]* | paraview-[0-9]* | ParaView-[0-9]*) # paraview version
        setParaViewVersion "${1%%/}"
        ;;
    [A-Z]*=*)            # cmake variables
        addCMakeVariable "$1"
        ;;
    -gcc)
        export CC=gcc    # use gcc/g++
        export CXX=g++
        ;;
    -patch)              # stage 0: patch sources
        runPATCH=true
        unset runDEFAULT
        ;;
    -no-patch)
        runPATCH=false
        ;;
    -config)             # stage 1: config only
        runCONFIG=true
        unset runDEFAULT
        ;;
    -no-config)
        runCONFIG=false
        ;;
    -make)               # stage 2: make only
        runMAKE=true
        unset runDEFAULT
        ;;
    -no-make)
        runMAKE=false
        ;;
    -install)            # stage 3: install only
        runINSTALL=true
        unset runDEFAULT
        ;;
    -no-install)
        runINSTALL=false
        ;;
    -rebuild)            # shortcut for rebuilding
        runMAKE=true
        runINSTALL=true
        unset runDEFAULT
        ;;
    -gl2)
        withGL2=true
        ;;
    -no-gl2)
        withGL2=false
        ;;
    -mesa)
        withMESA=true
        ;;
    -osmesa)
        echo
        echo "The -osmesa option is currently ignored"
        echo
        # withMESA=true
        # withOSMESA=true
        ;;
    -no-mesa)
        withMESA=false
        withOSMESA=false
        ;;
    -mesa-prefix)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        withMESA=true
        MESA_INCLUDE="${2%%/}/include"
        MESA_LIBRARY="${2%%/}/lib$WM_COMPILER_LIB_ARCH/libOSMesa.so"
        shift
        ;;
    -mesa-include)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        withMESA=true
        MESA_INCLUDE="${2%%/}"
        shift
        ;;
    -mesa-lib)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        withMESA=true
        MESA_LIBRARY="${2%%/}"
        shift
        ;;
    -mpi)
        withMPI=true
        ;;
    -mpi=[0-9]*) # mpi and max mpi processes
        withMPI=true
        MPI_MAX_PROCS="${1##*=}"
        ;;
    -no-mpi)
        withMPI=false
        ;;
    -python)
        withPYTHON=true
        ;;
    -no-python)
        withPYTHON=false
        ;;
    -python-lib)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        PYTHON_LIBRARY="${2%%/}"
        shift
        ;;
    -cmake)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        CMAKE_PATH="${2%%/}"
        shift
        ;;
    -qmake)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        QMAKE_PATH="${2%%/}"
        shift
        ;;
    -qt)
        withQT=true
        ;;
    -no-qt)
        withQT=false
        ;;
    -qt-[1-9]*)
        QMAKE_PATH="$installBASE/${1##-}"
        ;;
    -verbose)
        withVERBOSE=true
        ;;
    -version)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        setParaViewVersion "${2%%/}"
        shift
        ;;
    -major)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        export ParaView_MAJOR="$2"
        shift
        ;;
    -buildType)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        BUILD_TYPE="$2"
        shift
        ;;
    *)
        die "unknown option/argument: '$1'"
        ;;
    esac
    shift
done

[ -n "$ParaView_VERSION" ] || die "The paraview-VERSION was not specified"

# nothing to build
if _foamIsNone "$ParaView_VERSION"
then
    echo "Using paraview-none (skip ThirdParty build of ParaView)"
    exit 0
fi

# Version-specific adjustments
if [ "$withGL2" = auto ]
then
    if [ "${ParaView_VERSION%%.*}" = 4 ]
    then
        withGL2=false
    else
        withGL2=true
    fi
fi

if [ "$runDEFAULT" = true ]
then
    : ${runPATCH:=true}
    : ${runCONFIG:=true}
    : ${runMAKE:=true}
    : ${runINSTALL:=true}
fi

if [ "$withMESA" = true ]
then
    : ${withQT:=false}  # No QT unless explicitly requested
    addCMakeVariable "VTK_USE_X=OFF"
    # addCMakeVariable "OPENGL_INCLUDE_DIR=IGNORE"
    # addCMakeVariable "OPENGL_gl_LIBRARY=IGNORE"
    # addCMakeVariable "OPENGL_xmesa_INCLUDE_DIR=IGNORE"
    ## seems to be unnecessary => addCMakeVariable "VTK_USE_OFFSCREEN=OFF"
fi


# Set configure options
#~~~~~~~~~~~~~~~~~~~~~~
addVerbosity        # verbose makefiles
addMpiSupport       # set MPI-specific options
addPythonSupport    # set Python-specific options
addMesaSupport      # set MESA-specific options
addGL2Support       # new rendering backend
addQtSupport        # add extra Qt support

setParaViewDirs     # where things are or should be put


# Build and install
# ~~~~~~~~~~~~~~~~~
cat<<SUMMARY

Build stages selected
---------------------
    -patch    ${runPATCH:-false}
    -config   ${runCONFIG:-false}
    -make     ${runMAKE:-false}
    -install  ${runINSTALL:-false}
---------------------
Features selected
    mesa      ${withMESA:-false}
    mpi       ${withMPI:-false}
    python    ${withPYTHON:-false}
    qt        ${withQT:-false}
---------------------
Version information
    qt        ${QT_VERSION:-none}
    version   ${ParaView_VERSION:-unknown} $(checkVersion)
    major     ${ParaView_MAJOR:-unknown}
    build     ${BUILD_TYPE:-unknown}
---------------------
SUMMARY

[ "$runPATCH"   = true ] && patchParaView
[ "$runCONFIG"  = true ] && configParaView
[ "$runMAKE"    = true ] && makeParaView
[ "$runINSTALL" = true ] && installParaView

echo
echo Done

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