#
# UseCGAL.cmake can be included in a project to set the needed compiler and linker
# settings to use CGAL in a program.
#
# The variables used here are defined in the CGALConfig.cmake generated when CGAL was installed.
#
#
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)

include(${CGAL_MODULES_DIR}/CGAL_Macros.cmake)

cgal_setup_module_path()

if(NOT USE_CGAL_FILE_INCLUDED) 
  set(USE_CGAL_FILE_INCLUDED 1)

  include(CGAL_Common)
  include(CGAL_SetupFlags)
  include(CGAL_GeneratorSpecificSettings)
  
  set( CGAL_LIBRARIES )

  foreach ( CGAL_COMPONENT ${CGAL_REQUESTED_COMPONENTS} )
    message (STATUS "CGAL requested component: ${CGAL_COMPONENT}")

    if(WITH_CGAL_${CGAL_COMPONENT})
      if(TARGET CGAL_${CGAL_COMPONENT})
        add_to_list( CGAL_LIBRARIES CGAL_${CGAL_COMPONENT} )
      else()
        add_to_list( CGAL_LIBRARIES ${CGAL_${CGAL_COMPONENT}_LIBRARY} )
      endif()
      add_to_list( CGAL_3RD_PARTY_LIBRARIES  ${CGAL_${CGAL_COMPONENT}_3RD_PARTY_LIBRARIES}  )
      
      add_to_list( CGAL_3RD_PARTY_INCLUDE_DIRS   ${CGAL_${CGAL_COMPONENT}_3RD_PARTY_INCLUDE_DIRS}   )
      add_to_list( CGAL_3RD_PARTY_DEFINITIONS    ${CGAL_${CGAL_COMPONENT}_3RD_PARTY_DEFINITIONS}    )
      add_to_list( CGAL_3RD_PARTY_LIBRARIES_DIRS ${CGAL_${CGAL_COMPONENT}_3RD_PARTY_LIBRARIES_DIRS} )

      # TODO EBEB: What about GMP, MPFR, zlib used in other libCGALxyz
      if (${CGAL_COMPONENT} STREQUAL "Qt3") 
        find_package( Qt3-patched )
      endif()

      if (${CGAL_COMPONENT} STREQUAL "Qt4") 
        find_package( Qt4 )
      endif()

    else(WITH_CGAL_${CGAL_COMPONENT})

      # now we are talking about 3rd party libs

      if ( ${CGAL_COMPONENT} STREQUAL "ALL_PRECONFIGURED_LIBS" )

        if (CGAL_ALLOW_ALL_PRECONFIGURED_LIBS_COMPONENT) 
          message( STATUS "External libraries are all used")
          foreach ( CGAL_3RD_PARTY_LIB ${CGAL_SUPPORTING_3RD_PARTY_LIRARIES})
            if (${CGAL_3RD_PARTY_LIB}_FOUND) 
              use_lib( ${CGAL_3RD_PARTY_LIB} "###${${CGAL_3RD_PARTY_LIB}_USE_FILE}")
            endif()
          endforeach()
        else()
          message( SEND_ERROR "Component ALL_PRECONFIGURED_LIBS only allow with CGAL_ALLOW_ALL_PRECONFIGURED_LIBS_COMPONENT=ON") 
        endif()  
  
      else() 

        set( vlib "${CGAL_EXT_LIB_${CGAL_COMPONENT}_PREFIX}" )

        if ( ${vlib}_FOUND) 

          message( STATUS "External library ${CGAL_COMPONENT} has been preconfigured")
          use_lib( ${CGAL_COMPONENT} "###${${vlib}_USE_FILE}")

        else()

          message( STATUS "External library ${CGAL_COMPONENT} has not been preconfigured")
          find_package( ${CGAL_COMPONENT} )
          message( STATUS "External library ${vlib} after find")
          if (${vlib}_FOUND) 
            use_lib( ${CGAL_COMPONENT} "###${${vlib}_USE_FILE}")
          endif()
     
        endif()

      endif()

    endif(WITH_CGAL_${CGAL_COMPONENT})

  endforeach()
    
  include_directories( "${CMAKE_CURRENT_BINARY_DIR}" ) 

  # need to get variable from cache while compiling CGAL, while in a demo it is set in CGALConfig.cmake
  if ( NOT CGAL_LIBRARY ) 
    cache_get(CGAL_LIBRARY)
  endif()
  add_to_list( CGAL_LIBRARIES ${CGAL_LIBRARY} )

  #message (STATUS "LIB: ${CGAL_LIBRARY}")
  #message (STATUS "LIBS: ${CGAL_LIBRARIES}")
  
  include_directories ( ${CGAL_INCLUDE_DIRS} ${CGAL_3RD_PARTY_INCLUDE_DIRS} )     
  add_definitions     ( ${CGAL_3RD_PARTY_DEFINITIONS}  ${CGAL_DEFINITIONS}  )
  
  link_directories    ( ${CGAL_LIBRARIES_DIR} ${CGAL_3RD_PARTY_LIBRARIES_DIRS} )
  link_libraries      ( ${CGAL_LIBRARIES}     ${CGAL_3RD_PARTY_LIBRARIES}      )

  
endif()