-if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/rostests/)
+if(ENABLE_ROSTESTS)
add_subdirectory(rostests)
endif()
-if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/rosapps/)
+if(ENABLE_ROSAPPS)
add_subdirectory(rosapps)
endif()
-if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/wallpapers/)
+if(ENABLE_WALLPAPERS)
add_subdirectory(wallpapers)
endif()