-vpath % ../lpc:../product:../drivers:../core:../util:../kalman:../aes:..
-vpath make-altitude ../util
-vpath make-kalman ../util
-vpath kalman.5c ../kalman
-vpath kalman_filter.5c ../kalman
-vpath load_csv.5c ../kalman
-vpath matrix.5c ../kalman
-vpath ao-make-product.5c ../util
-