# Copyright (C) 2015-2016  CEA/DEN, EDF R&D
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
#
# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#

CMAKE_MINIMUM_REQUIRED(VERSION 2.8.2 FATAL_ERROR)
#INCLUDE(CMakeDependentOption)
PROJECT(MEDCoupling C CXX)

# Ensure a proper linker behavior:
CMAKE_POLICY(SET CMP0003 NEW)

# Versioning
# ===========
# Project name, upper case
STRING(TOUPPER ${PROJECT_NAME} PROJECT_NAME_UC)

SET(${PROJECT_NAME_UC}_MAJOR_VERSION 8)
SET(${PROJECT_NAME_UC}_MINOR_VERSION 0)
SET(${PROJECT_NAME_UC}_PATCH_VERSION 0)
SET(${PROJECT_NAME_UC}_VERSION
  ${${PROJECT_NAME_UC}_MAJOR_VERSION}.${${PROJECT_NAME_UC}_MINOR_VERSION}.${${PROJECT_NAME_UC}_PATCH_VERSION})

# Our own set of macros:
LIST(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake_files")
INCLUDE(SalomeMacros)

# Platform setup
# ==============
INCLUDE(SalomeSetupPlatform)

#
# User options
# ============
INCLUDE(CMakeDependentOption)
OPTION(MEDCOUPLING_MICROMED "Build MED without MED file dependancy." OFF)
OPTION(MEDCOUPLING_ENABLE_PYTHON "Build PYTHON bindings." ON)
OPTION(MEDCOUPLING_ENABLE_PARTITIONER "Build MEDPartitioner." ON)
OPTION(MEDCOUPLING_ENABLE_RENUMBER "Build Renumber." ON)
OPTION(MEDCOUPLING_WITH_FILE_EXAMPLES "Install examples of files containing meshes and fields of different formats." ON)
OPTION(MEDCOUPLING_USE_MPI "(Use MPI containers) - For MED this triggers the build of ParaMEDMEM." OFF)
OPTION(MEDCOUPLING_BUILD_TESTS "Build MED tests." ON)
OPTION(MEDCOUPLING_BUILD_DOC "Build MED doc." ON)
CMAKE_DEPENDENT_OPTION(MEDCOUPLING_PARTITIONER_METIS "Enable metis graph library in MEDPartitioner." ON "MEDCOUPLING_ENABLE_PARTITIONER" OFF)
CMAKE_DEPENDENT_OPTION(MEDCOUPLING_PARTITIONER_SCOTCH "Enable scotch graph library in MEDPartitioner." ON "MEDCOUPLING_ENABLE_PARTITIONER;NOT MEDCOUPLING_USE_MPI" OFF)
CMAKE_DEPENDENT_OPTION(MEDCOUPLING_PARTITIONER_PARMETIS "Enable parmetis graph library in MEDPartitioner." ON "MEDCOUPLING_ENABLE_PARTITIONER;MEDCOUPLING_USE_MPI" OFF)
IF(WIN32)
  CMAKE_DEPENDENT_OPTION(MEDCOUPLING_MEDLOADER_USE_XDR "Enable use of XDR for SauvReader." ON "NOT MEDCOUPLING_MICROMED" OFF)
ENDIF(WIN32)

#
# Set list of prerequisites
# =========================

IF(NOT MEDCOUPLING_MICROMED)
  FIND_PACKAGE(SalomeHDF5 REQUIRED)
  FIND_PACKAGE(SalomeMEDFile REQUIRED)
  # XDR stuff
  IF(NOT WIN32)
    FIND_PACKAGE(SalomeXDR REQUIRED)
  ELSE(NOT WIN32)
    IF(MEDCOUPLING_MEDLOADER_USE_XDR)
      FIND_PACKAGE(SalomeXDR REQUIRED)
    ENDIF(MEDCOUPLING_MEDLOADER_USE_XDR)
  ENDIF(NOT WIN32)
  # End of XDR Stuff
  IF(MEDCOUPLING_ENABLE_PARTITIONER)
    FIND_PACKAGE(SalomeLibXml2)
    SALOME_LOG_OPTIONAL_PACKAGE(LibXml2 MEDCOUPLING_ENABLE_PARTITIONER)
    IF(MEDCOUPLING_PARTITIONER_METIS)
      FIND_PACKAGE(SalomeMetis)
      SALOME_LOG_OPTIONAL_PACKAGE(Metis MEDCOUPLING_PARTITIONER_METIS)
      ADD_DEFINITIONS("-DMED_ENABLE_METIS")
    ENDIF(MEDCOUPLING_PARTITIONER_METIS)
    IF(MEDCOUPLING_PARTITIONER_SCOTCH)
      FIND_PACKAGE(SalomeScotch)
      SALOME_LOG_OPTIONAL_PACKAGE(Scotch MEDCOUPLING_PARTITIONER_SCOTCH)
      ADD_DEFINITIONS("-DMED_ENABLE_SCOTCH")
    ENDIF(MEDCOUPLING_PARTITIONER_SCOTCH)
  ENDIF(MEDCOUPLING_ENABLE_PARTITIONER)
ENDIF(NOT MEDCOUPLING_MICROMED)

ENABLE_TESTING() # let it outsite because even if MEDCOUPLING_BUILD_TESTS is OFF, python tests that not need additional compilation can be run.

IF(MEDCOUPLING_BUILD_TESTS)
  FIND_PACKAGE(SalomeCppUnit)
  SALOME_LOG_OPTIONAL_PACKAGE(CppUnit SALOME_BUILD_TESTS)
ENDIF(MEDCOUPLING_BUILD_TESTS)

IF(MEDCOUPLING_USE_MPI)
  FIND_PACKAGE(SalomeMPI REQUIRED)
  ADD_DEFINITIONS("-DHAVE_MPI")
  IF(MEDCOUPLING_PARTITIONER_PARMETIS)
    FIND_PACKAGE(SalomeParMetis)
    SALOME_LOG_OPTIONAL_PACKAGE(ParMetis MEDCOUPLING_PARTITIONER_PARMETIS)
    ADD_DEFINITIONS("-DMED_ENABLE_PARMETIS")
  ENDIF(MEDCOUPLING_PARTITIONER_PARMETIS)
ENDIF(MEDCOUPLING_USE_MPI)

IF(MEDCOUPLING_ENABLE_RENUMBER)
  FIND_PACKAGE(SalomeBoost)
  SALOME_LOG_OPTIONAL_PACKAGE(Boost MEDCOUPLING_ENABLE_RENUMBER)
ENDIF(MEDCOUPLING_ENABLE_RENUMBER)

IF(MEDCOUPLING_ENABLE_PYTHON)
  FIND_PACKAGE(SalomePythonInterp)
  FIND_PACKAGE(SalomePythonLibs)
  FIND_PACKAGE(SalomeNumPySciPy)
  FIND_PACKAGE(SalomeSWIG)
  SALOME_LOG_OPTIONAL_PACKAGE(PythonInterp MEDCOUPLING_ENABLE_PYTHON)
  SALOME_LOG_OPTIONAL_PACKAGE(PythonLibs MEDCOUPLING_ENABLE_PYTHON)
  SALOME_LOG_OPTIONAL_PACKAGE(SWIG   MEDCOUPLING_ENABLE_PYTHON)
ENDIF(MEDCOUPLING_ENABLE_PYTHON)

IF(MEDCOUPLING_BUILD_DOC)
  FIND_PACKAGE(SalomeDoxygen)
  FIND_PACKAGE(SalomeGraphviz)
  FIND_PACKAGE(SalomeSphinx)
  SALOME_LOG_OPTIONAL_PACKAGE(Doxygen MEDCOUPLING_BUILD_DOC)
  SALOME_LOG_OPTIONAL_PACKAGE(Graphviz MEDCOUPLING_BUILD_DOC)
  SALOME_LOG_OPTIONAL_PACKAGE(Sphinx MEDCOUPLING_BUILD_DOC)
ENDIF(MEDCOUPLING_BUILD_DOC)

# Detection report
SALOME_PACKAGE_REPORT_AND_CHECK()

# Directories
#
# Directories have to be given after prerequisites (to be able to use
# Python version string for example).
# ===========
SET(MEDCOUPLING_INSTALL_BINS bin CACHE PATH "Install path: MEDCoupling binaries")
SET(MEDCOUPLING_INSTALL_LIBS lib CACHE PATH "Install path: MEDCoupling libs")
SET(MEDCOUPLING_INSTALL_HEADERS include CACHE PATH "Install path: MEDCoupling headers")
SET(MEDCOUPLING_INSTALL_SCRIPT_SCRIPTS ${MEDCOUPLING_INSTALL_BINS} CACHE PATH "Install path: MEDCoupling scripts")
SET(MEDCOUPLING_INSTALL_TESTS tests CACHE PATH "Install path: MEDCoupling tests")
# SET(MEDCOUPLING_INSTALL_SCRIPT_DATA ${MEDCOUPLING_INSTALL_BINS} CACHE PATH "Install path: MEDCoupling script data")
SET(MEDCOUPLING_INSTALL_SCRIPT_PYTHON ${MEDCOUPLING_INSTALL_BINS} CACHE PATH "Install path: MEDCoupling Python scripts")
SET(MEDCOUPLING_INSTALL_CMAKE_LOCAL cmake_files CACHE PATH "Install path: local MEDCoupling CMake files")

IF(MEDCOUPLING_ENABLE_PYTHON)
  SET(_pydir lib/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages)
  SET(MEDCOUPLING_INSTALL_PYTHON ${_pydir} CACHE PATH "Install path: MEDCoupling Python stuff")
  SET(MEDCOUPLING_INSTALL_PYTHON_SHARED ${MEDCOUPLING_INSTALL_PYTHON}/shared_modules CACHE PATH
    "Install path: MEDCoupling Python shared modules")
ENDIF(MEDCOUPLING_ENABLE_PYTHON)

SET(MEDCOUPLING_INSTALL_RES share/resources CACHE PATH "Install path: MEDCoupling resources")
SET(MEDCOUPLING_INSTALL_DOC share/doc CACHE PATH "Install path: MEDCoupling documentation")

# Med specific:

SET(MEDCOUPLING_INSTALL_RES_DATA "${MEDCOUPLING_INSTALL_RES}/med" CACHE PATH "Install path: MEDCoupling specific data")
#SET(MEDCOUPLING_INSTALL_RES_SCRIPTS "${MEDCOUPLING_INSTALL_RES}/med" CACHE PATH "Install path: MEDCouplng specific scripts")

MARK_AS_ADVANCED(MEDCOUPLING_INSTALL_BINS MEDCOUPLING_INSTALL_LIBS MEDCOUPLING_INSTALL_IDLS MEDCOUPLING_INSTALL_HEADERS)
MARK_AS_ADVANCED(MEDCOUPLING_INSTALL_SCRIPT_SCRIPTS MEDCOUPLING_INSTALL_SCRIPT_DATA MEDCOUPLING_INSTALL_SCRIPT_PYTHON)
MARK_AS_ADVANCED(MEDCOUPLING_INSTALL_APPLISKEL_SCRIPTS  MEDCOUPLING_INSTALL_APPLISKEL_PYTHON MEDCOUPLING_INSTALL_CMAKE MEDCOUPLING_INSTALL_CMAKE_LOCAL MEDCOUPLING_INSTALL_RES)
MARK_AS_ADVANCED(MEDCOUPLING_INSTALL_PYTHON MEDCOUPLING_INSTALL_PYTHON_SHARED MEDCOUPLING_INSTALL_RES_DATA MEDCOUPLING_INSTALL_DOC)

# Header configuration
# ====================
SALOME_XVERSION(${PROJECT_NAME})
SALOME_CONFIGURE_FILE(MEDCoupling_version.h.in MEDCoupling_version.h INSTALL ${MEDCOUPLING_INSTALL_HEADERS})

# Accumulate environment variables for MED module
#SALOME_ACCUMULATE_ENVIRONMENT(PYTHONPATH NOCHECK ${CMAKE_INSTALL_PREFIX}/${MEDCOUPLING_INSTALL_BINS}
#                                                 ${CMAKE_INSTALL_PREFIX}/${MEDCOUPLING_INSTALL_PYTHON})
#SALOME_ACCUMULATE_ENVIRONMENT(LD_LIBRARY_PATH NOCHECK ${CMAKE_INSTALL_PREFIX}/${MEDCOUPLING_INSTALL_LIBS})


# Sources
# ========
IF(WIN32)
  ADD_DEFINITIONS("-D_USE_MATH_DEFINES")
ENDIF(WIN32)

ADD_SUBDIRECTORY(src)
ADD_SUBDIRECTORY(cmake_files)

IF(MEDCOUPLING_BUILD_DOC)
  ADD_SUBDIRECTORY(doc)
ENDIF(MEDCOUPLING_BUILD_DOC)

ADD_SUBDIRECTORY(resources)
ADD_SUBDIRECTORY(v8_work)

# Configuration export
# ====================
INCLUDE(CMakePackageConfigHelpers)

# List of targets in this project we want to make visible to the rest of the world.
# They all have to be INSTALL'd with the option "EXPORT ${PROJECT_NAME}TargetGroup"
SET(_${PROJECT_NAME}_exposed_targets
   interpkernel medcoupling medcouplingremapper)

IF(NOT MEDCOUPLING_MICROMED)
  LIST(APPEND _${PROJECT_NAME}_exposed_targets medloader)
  IF(MEDCOUPLING_ENABLE_RENUMBER)
    LIST(APPEND _${PROJECT_NAME}_exposed_targets renumbercpp)
  ENDIF()
  IF(MEDCOUPLING_ENABLE_PARTITIONER)
    LIST(APPEND _${PROJECT_NAME}_exposed_targets medpartitionercpp)
    IF(MEDCOUPLING_BUILD_TESTS)
      LIST(APPEND _${PROJECT_NAME}_exposed_targets MEDPARTITIONERTest)
    ENDIF()
  ENDIF()
  IF(MEDCOUPLING_BUILD_TESTS)
    LIST(APPEND _${PROJECT_NAME}_exposed_targets InterpKernelTest InterpKernelTestUtils)
  ENDIF()
ENDIF()

IF(MEDCOUPLING_USE_MPI)
  LIST(APPEND _${PROJECT_NAME}_exposed_targets paramedmem)
  IF(NOT MEDCOUPLING_MICROMED)
    LIST(APPEND _${PROJECT_NAME}_exposed_targets paramedloader)
  ENDIF()
  IF(MEDCOUPLING_BUILD_TESTS)
    IF(NOT MEDCOUPLING_MICROMED)
      LIST(APPEND _${PROJECT_NAME}_exposed_targets ParaMEDMEMTest)
    ENDIF()
  ENDIF()
ENDIF()

# Add all targets to the build-tree export set

EXPORT(TARGETS ${_${PROJECT_NAME}_exposed_targets}
  FILE ${PROJECT_BINARY_DIR}/${PROJECT_NAME}Targets.cmake)

# Create the configuration files:

#      Ensure the variables are always defined for the configure (even if empty):
SET(MEDFILE_ROOT_DIR "${MEDFILE_ROOT_DIR}")
SET(MPI_ROOT_DIR "${MPI_ROOT_DIR}")
SET(BOOST_ROOT_DIR "${BOOST_ROOT_DIR}")
SET(SWIG_ROOT_DIR "${SWIG_ROOT_DIR}")
SET(PYTHON_ROOT_DIR "${PYTHON_ROOT_DIR}")
SET(CPPUNIT_ROOT_DIR "${CPPUNIT_ROOT_DIR}")
SET(GRAPHVIZ_ROOT_DIR "${GRAPHVIZ_ROOT_DIR}")
SET(DOXYGEN_ROOT_DIR "${DOXYGEN_ROOT_DIR}")
SET(SPHINX_ROOT_DIR "${SPHINX_ROOT_DIR}")

SET(METIS_ROOT_DIR "${METIS_ROOT_DIR}")
SET(PARMETIS_ROOT_DIR "${PARMETIS_ROOT_DIR}")
SET(SCOTCH_ROOT_DIR "${SCOTCH_ROOT_DIR}")
SET(XDR_ROOT_DIR "${XDR_ROOT_DIR}")

SET(CONF_INCLUDE_DIRS "${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}")

# Build variables that will be expanded when configuring Salome<MODULE>Config.cmake:
SALOME_CONFIGURE_PREPARE(MEDFile MPI Boost Swig Python CppUnit Graphviz Doxygen Sphinx   
                         Metis ParMetis Scotch XDR)

CONFIGURE_PACKAGE_CONFIG_FILE(${PROJECT_NAME}Config.cmake.in 
    ${PROJECT_BINARY_DIR}/to_install/${PROJECT_NAME}Config.cmake
    INSTALL_DESTINATION "${MEDCOUPLING_INSTALL_CMAKE_LOCAL}"
    PATH_VARS CONF_INCLUDE_DIRS MEDCOUPLING_INSTALL_CMAKE_LOCAL CMAKE_INSTALL_PREFIX 
       MEDFILE_ROOT_DIR MPI_ROOT_DIR
       BOOST_ROOT_DIR SWIG_ROOT_DIR PYTHON_ROOT_DIR CPPUNIT_ROOT_DIR GRAPHVIZ_ROOT_DIR DOXYGEN_ROOT_DIR
       SPHINX_ROOT_DIR 
       METIS_ROOT_DIR PARMETIS_ROOT_DIR SCOTCH_ROOT_DIR XDR_ROOT_DIR)

WRITE_BASIC_PACKAGE_VERSION_FILE(${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
    VERSION ${${PROJECT_NAME_UC}_VERSION}
    COMPATIBILITY AnyNewerVersion)
  
# Install the CMake configuration files:
INSTALL(FILES
  "${PROJECT_BINARY_DIR}/to_install/${PROJECT_NAME}Config.cmake"
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
  DESTINATION "${MEDCOUPLING_INSTALL_CMAKE_LOCAL}")

# Install the export set for use with the install-tree
INSTALL(EXPORT ${PROJECT_NAME}TargetGroup DESTINATION "${MEDCOUPLING_INSTALL_CMAKE_LOCAL}" 
        FILE ${PROJECT_NAME}Targets.cmake)