# - Find CGAL
# Find the CGAL autolinking headers.
#
#  CGAL_INCLUDE_DIR -  where to find CGAL.h, etc.
#  CGAL_FOUND        - True if CGAL found.

IF (CGAL_INCLUDE_DIR)
  # Already in cache, be silent
  SET(CGAL_FIND_QUIETLY TRUE)
ENDIF (CGAL_INCLUDE_DIR)

GET_FILENAME_COMPONENT(module_file_path ${CMAKE_CURRENT_LIST_FILE} PATH )

# Look for the header file.
FIND_PATH(CGAL_INCLUDE_DIR NAMES CGAL/auto_link/auto_link.h
                           PATHS ../../External/include
                                 "C:/Program Files/CGAL-3.4/include"
                                 "C:/Programme/CGAL-3.4/include"
                                 "C:/libs/CGAL-3.4/include"
                                 ${module_file_path}/../../../External/include)
MARK_AS_ADVANCED(CGAL_INCLUDE_DIR)


# Copy the results to the output variables.
IF(CGAL_INCLUDE_DIR )
  SET(CGAL_FOUND 1)
  SET(CGAL_INCLUDE_DIR ${CGAL_INCLUDE_DIR})
  # Look for the taucs dir.
  FIND_PATH(CGAL_TAUCS_DIR NAMES include/taucs.h
                           PATHS ${CGAL_INCLUDE_DIR}/../auxiliary/taucs)
  add_definitions (-DCGAL_AUTOLINK)
ELSE(CGAL_INCLUDE_DIR )
  SET(CGAL_FOUND 0)
  SET(CGAL_INCLUDE_DIR)
ENDIF(CGAL_INCLUDE_DIR )

# Report the results.
IF(NOT CGAL_FOUND)
  SET(CGAL_DIR_MESSAGE
    "CGAL was not found. Make sure CGAL_INCLUDE_DIR is set to the directories containing the include files for CGAL. .")
  IF(CGAL_FIND_REQUIRED)
      MESSAGE(FATAL_ERROR "${CGAL_DIR_MESSAGE}")
  ELSEIF(NOT CGAL_FIND_QUIETLY)
    MESSAGE(STATUS "${CGAL_DIR_MESSAGE}")
  ELSE(NOT CGAL_FIND_QUIETLY)
  ENDIF(CGAL_FIND_REQUIRED)
ELSE (NOT CGAL_FOUND)
  IF(NOT CGAL_FIND_QUIETLY)
    MESSAGE(STATUS "Looking for CGAL - found")
  ENDIF(NOT CGAL_FIND_QUIETLY)
ENDIF(NOT CGAL_FOUND)