if(METIS_FOUND AND NOT TARGET CGAL::METIS_support) add_library(CGAL::METIS_support INTERFACE IMPORTED) set_target_properties(CGAL::METIS_support PROPERTIES INTERFACE_COMPILE_DEFINITIONS "CGAL_METIS_ENABLED" INTERFACE_INCLUDE_DIRECTORIES "${METIS_INCLUDE_DIRS}" INTERFACE_LINK_LIBRARIES "${METIS_LIBRARIES}") endif()