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As far as I know, catkin_makedoes not support nested ros packages. But you can put multiple ros-packages in a single directory (i.e. side-by-side.) That top-level directory does not need a CMakeLists.txt file, as catkin_make should discover the ros-packages on its own.

If you change your catkin_ws/src/ the directory structure, make sure you do a clean build by deleting catkin_ws/build/ and catkin_ws/devel/ directories.

As far as I know, catkin_make does not support nested ros packages. But you can put multiple ros-packages in a single directory (i.e. side-by-side.) That top-level directory does not need a CMakeLists.txt file, as catkin_make should discover the ros-packages on its own.

If you change your catkin_ws/src/ the directory structure, make sure you do a clean build by deleting catkin_ws/build/ and catkin_ws/devel/ directories.

As far as I know, catkin_make does not support nested ros packages. But you can put multiple ros-packages in a single directory (i.e. side-by-side.) side-by-side, like your ros_actions/.) That top-level directory does not need a CMakeLists.txt file, as catkin_make should discover the ros-packages on its own.

If you change your catkin_ws/src/ directory structure, make sure you do a clean build by deleting catkin_ws/build/ and catkin_ws/devel/ directories.