>
> There's a forthcoming enhancement to roswtf to warn on the presence of
> these flags: https://code.ros.org/trac/ros/ticket/3221.


roswtf should already warn in this case, something like:


WARNING The following packages have msg/srv-related cflags exports
that are no longer necessary
	<export>
		<cpp cflags="..."
	</export>:
 * visualization_msgs: -I${prefix}/msg/cpp


Josh