cmake_minimum_required(VERSION 2.6)
project(GUDHIPointsGenerator)

if(CGAL_FOUND)
  if (NOT CGAL_VERSION VERSION_LESS 4.6.0)
    message(STATUS "CGAL version: ${CGAL_VERSION}.")

    include( ${CGAL_USE_FILE} )
    # In CMakeLists.txt, when include(${CGAL_USE_FILE}), CXX_FLAGS are overwritten.
    # cf. http://doc.cgal.org/latest/Manual/installation.html#title40
    # A workaround is to add "-std=c++11" again.
    # A fix would be to use https://cmake.org/cmake/help/v3.1/prop_gbl/CMAKE_CXX_KNOWN_FEATURES.html 
    # or even better https://cmake.org/cmake/help/v3.1/variable/CMAKE_CXX_STANDARD.html
    # but it implies to use cmake version 3.1 at least.
    if(NOT MSVC)
      include(CheckCXXCompilerFlag)
      CHECK_CXX_COMPILER_FLAG(-std=c++11 COMPILER_SUPPORTS_CXX11)
      if(COMPILER_SUPPORTS_CXX11)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
      endif()
    endif()
    # - End of workaround

    find_package(Eigen3 3.1.0)
    if (EIGEN3_FOUND)
      include( ${EIGEN3_USE_FILE} )
      include_directories (BEFORE "../../include")

      add_executable ( hypergenerator hypergenerator.cpp )
      add_test(hypergenerator_on_sphere_3000_10_5.0 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator on sphere onSphere.off 3000 10 5.0)
      add_test(hypergenerator_on_sphere_10000_3 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator on sphere onSphere.off 10000 3)
      add_test(hypergenerator_in_sphere_7000_12_10.8 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in sphere inSphere.off 7000 12 10.8)
      add_test(hypergenerator_in_sphere_50000_2 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in sphere inSphere.off 50000 2)
      # on cube is not available in CGAL
      add_test(hypergenerator_in_cube_7000_12_10.8 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in cube inCube.off 7000 12 10.8)
      add_test(hypergenerator_in_cube_50000_2 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in cube inCube.off 50000 3)
      endif()
  else()
    message(WARNING "CGAL version: ${CGAL_VERSION} is too old to compile hypergenerator. Version 4.6.0 is required.")
  endif ()
endif()