Workspace correct build?

Hello I am new to ROS. I have read and tried various tutorials on wiki.ros.org. My current try is to install a ROS with the urmoderndrivers on my Raspberry Pi 3B. First i tried to install it on a RPi 3b+, but due to the problem, that a suitable OS cannot be installed yet on the RPI 3B+ i downgraded to the RPi 3B. I tried it with Raspbian Jessie and Stretch, and it worked almost perfect, but the ur drives made several different problems. Then i tried it with Ubuntu Mate Xenial 16.04 as suggested in the wiki. But now I stuck again with the urmoderndrivers. When i want to install it with catkin_make, i get following error:

The specified base path "path/ur_modern_driver" contains a package but "catkin_make" must be invoked in the root of workspace

I googeled the problem and yeah i can read the problem. I tried to build it in

user@pi:/opt/ros/kinetic/etc/catkin - folder woth only profile.d

user@pi:/catkin_ws/ - i created the workspace and cloned the repository

user@pi:/opt/ros/kinetic/etc/catkin_ws - i created the workspace and cloned the repository

I was not able to locate catkin_ws, and in my catkin folder there is no devel nor build nor src. I am aware of that: Wiki Answers and followed that possible fix.

Now to my question: Is my workspace built correctly? If not, how can i do that? Or do you know how i can fix "catkin_make" must be invoked in the root of workspace problem? And yeah i tried to (re)install the whole system, and nothing changed.

Thanks in advance

Asked by roboticRaspi on 2018-06-01 05:33:06 UTC

Comments

Just a note: the fact that you're trying to build ur_modern_driver has no influence on your current problem at all.

Asked by gvdhoorn on 2018-06-01 05:59:53 UTC

Answers

Make sure you are cloning the repository inside the src folder of your workspace. For instance, if your workspace is called catkin_ws and that folder resides in your home directory, then the place to clone your repository is ~/catkin_ws/src. Then you have to invoke catkin_make from inside catkin_ws and not catkin_ws/src.

I suggest that you use catkin build instead. I find it nicer and you can invoke it from within any subfolder of your workspace. I like to think that it works somewhat like git in that particular respect: works from any subfolder.

Asked by McMurdo on 2021-07-26 05:04:29 UTC