if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.25") add_subdirectory(${PROJECT_SOURCE_DIR}/vendor/unordered_dense SYSTEM) else() add_subdirectory(${PROJECT_SOURCE_DIR}/vendor/unordered_dense) endif() set_target_properties( unordered_dense PROPERTIES INTERFACE_MAPBOX_NAME "unordered_dense" INTERFACE_MAPBOX_URL "https://github.com/martinus/unordered_dense" INTERFACE_MAPBOX_AUTHOR "Martin Leitner-Ankerl" INTERFACE_MAPBOX_LICENSE ${PROJECT_SOURCE_DIR}/vendor/unordered_dense/LICENSE )