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Hello,
I installed ROS and then cloned the package into catkin_ws.
In the building of the package procedure through cd ~/catkin_ws, I got the ERROR message (ERROR 2) "Package name is illegal and cannot be used in the message generation".
Why? What can I do?
Thanks. Regards.
Dashes are indeed not legal in package names.
I suggest you use underscores (_) instead. Using underscores to separate words in package names is best practice.
See also REP-144: ROS Package Naming.
Edit: actually, I just remembered since ros-infrastructure/catkin_pkg#199 dashes are actually allowed. wiki/Names has not been updated to reflect this I believe.
catkin_tools (package providing the catkin tool) also seems to be enforcing the old rules.
However, having written this, I would strongly recommend to not use dashes (-) in package names. It goes against 10+ years of convention in ROS, and I doubt every tool has been updated to process them correctly.
In your case, I'd use the name visual_crop_row_navigation.
I used as per your advice the underscores.
Error is solved but system now says that given package 'visual_crop_row_navigation' is not in the workspace.
I assume because in the clonig phase into catkin_ws, I used:
cd ~/catkin_ws/src git clone https://github.com/PRBonn/visual-crop...
Do I need to change something in the previous phase of cloning?
Thanks
Error is solved but system now says that given package 'visual_crop_row_navigation' is not in the workspace.
the name of a package is not determined by the name of the directory in which it resides.
To fix this you'd indeed have to change the name of the package (in the package.xml). Note however that there may be multiple references to the "old" name.
You may want to post an issue on the issue tracker of the author/maintainer to discuss this situation first.
Asked: 2020-02-08 04:12:53 -0500
Seen: 576 times
Last updated: Feb 08 '20
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You've very skillfully avoided mentioning the name of the package.
I would start with telling us what the name is.
which package is "the package"?
Merely
cd-ing to the root of your workspace does not build it. That would be with eithercatkin_makeorcatkin build.Finally, take a look at wiki/Names: Package Resource Names. Names for packages follow almost identical rules.
Hello
You are right. The name of the package is visual-crop-row-navigation
Here what I had inserted into the terminal:
cd ~/catkin_ws catkin build visual-crop-row-navigation