[quote="jcadam, post:1, topic:4065, full:true"] - It is supposed that 'ament' performs like 'catkin' with which dependencies could be resolved by declaring in 'package.xml'. However, it seems that 'ament' cannot do this job. [/quote] just responding to the above bit: Catkin does not resolve dependencies using the package manifest. That would be `rosdep`'s job. This is also the reason why you have to declare dependencies *twice*: once in your manifest, and once in the `find_package(catkin .. COMPONENTS ..)` call in your build script. --- [Visit Topic](https://discourse.ros.org/t/questions-on-ament-ament-py-ament-cmake-and-dependency-resolvers/4065/2) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: