target_sources(EM2 PRIVATE
					   ${CMAKE_CURRENT_LIST_DIR}/grid_queue.cpp
					   ${CMAKE_CURRENT_LIST_DIR}/grid_queue2.cpp
					   ${CMAKE_CURRENT_LIST_DIR}/volume_data.cpp
					   ${CMAKE_CURRENT_LIST_DIR}/volume.cpp
					   ${CMAKE_CURRENT_LIST_DIR}/skeletonizer.cpp
			   )