Build Error: Cannot locate message [Errors] in package [franka_core_msgs]

[raayraay96]

If you're experiencing the following error when building the franka_ros_interface package:

CMake Error at .../franka_core_msgs-genmsg.cmake:3 (message):
Could not find messages which ... depends on.
Cannot locate message [Errors] in package [franka_core_msgs]

Even though the Errors.msg file exists in the franka_core_msgs/msg directory, here's a potential solution:

Possible Cause:

The build system might be getting confused about where to find the Errors.msg file due to an outdated or incorrect dependency configuration.

Solution:

Verify Repository and Branch:
    Ensure you're using the correct repository:

    https://github.com/justagist/franka_ros_interface

    Make sure you're on the appropriate branch (e.g., noetic-devel for ROS Noetic).

Clean and Rebuild:

    Thoroughly clean your workspace:
    Bash

    cd <your_workspace>
    catkin clean -y 

    Use code [with caution.](https://github.com/faq#coding)

Rebuild the entire workspace from scratch:
Bash

catkin_make_isolated --install

Use code with caution.

Check for Missing Dependencies:
Bash

rosdep install --from-paths src --ignore-src -r -y

Use code with caution.

Manually Trigger Message Generation:

If the error persists, try forcing message generation specifically for franka_core_msgs:

Bash

catkin_make_isolated --install --pkg franka_core_msgs --catkin-make-args run_tests

Use code with caution.

Re-clone the Repository (If Necessary):

If all else fails, remove the franka_ros_interface folder and re-clone it, making sure to initialize and update the submodules:

Bash

cd <your_workspace/src>
rm -rf franka_ros_interface
git clone https://github.com/justagist/franka_ros_interface.git
cd franka_ros_interface
git submodule update --init --recursive

Use code with caution.

Explanation:

These steps resolve common issues related to:

Outdated/Incorrect Configuration: Cleaning and rebuilding refreshes the configuration files.
Missing Dependencies: The rosdep command ensures all required packages are installed.
Stale Build Artifacts: Cleaning the workspace eliminates old files that might cause conflicts.
Repository Problems: Re-cloning the repository can fix issues with missing or corrupted files.

Additional Notes:

Make sure to source your workspace after rebuilding (source devel_isolated/setup.bash).
If you're still having trouble, provide the following information in your GitHub issue:
    The full output of the catkin_make_isolated --install command
    The contents of franka_core_msgs/CMakeLists.txt and franka_core_msgs/package.xml

[github-actions]

Hi @raayraay96, thank you for using this repository. Unfortunately, I am unable to maintain this package any more, sorry!
If you are interested in contributing to this repository or are willing to maintain it, please contact me at mail@saifsidhik.page.
-- Saif