CMakeLists.txt in visp_tracker and visp_auto_tracker uses invalid rosbag URLs (404) and ROS1-style rosbag assumptions

[foreignlands]

---

Environment

• OS: Ubuntu 22.04
• ROS 2: Humble
• Build tool: colcon build --symlink-install
• ViSP: built from source

---

In both visp_tracker and visp_auto_tracker, the current CMakeLists.txt contains incorrect rosbag handling logic.

Problems

1. Invalid download URLs (404)
   The CMake code tries to download tutorial bags from GitHub release URLs that return HTTP 404, causing build failures.

2. Incorrect rosbag assumptions in ROS 2
   The CMake logic treats tutorial bags as ROS1-style single .bag files, while in ROS 2 a rosbag (*.bag) is a directory containing:

   metadata.yaml
   *.db3
   

   This leads to invalid install() paths and failures with colcon build --symlink-install.

---

Example problematic CMake code

(from visp_tracker/CMakeLists.txt)

ExternalProject_Add(
  external_bag
  URL https://github.com/lagadic/vision_visp/releases/download/vision_visp-0.5.0/tutorial-static-box-ros2.bag
)

install(
  DIRECTORY externals/src/tutorial-static-box-ros2.bag
  DESTINATION share/bag
)

This assumes:

• the URL exists (it returns 404),
• the bag is a single file,
• and the directory always exists at install time.

All of these assumptions are invalid in ROS 2.

---

Impact

With the default ROS 2 Humble workflow (--symlink-install), both packages can fail to build unless users manually patch the CMakeLists.

---

[fspindle]

Should be fixed since #150 was merged.
Can you try again using humble branch.

[rolalaro]

I haven't done the change for the visp_auto_tracker yet, I'm gonna create a PR today.

[rolalaro]

Solved in the MR #152 and #153

[Cioloic]

I think this fix deleted the original .bag file (and create a .tar.gz instead), so other branch like rolling which used this one can't compile because it doesn't found the rosbag.

I can see it here : https://github.com/lagadic/vision_visp/releases

There is only tutorial-static-box-ros2.tar.gz and tutorial-static-box-ros2.bag disappear.

Here there is still the .bag file : https://github.com/lagadic/vision_visp/blob/rolling/visp_tracker/CMakeLists.txt#L132

[rolalaro]

Yes it's true, I only fixed the problem in the humble branch because I only have humble installed on my laptop.
I think that the fix should be applied to rolling.
I don't see newer versions of ROS2 so that should be it I guess.

[rolalaro]

I just discovered that the format of the rosbags in ROS2 differ depending on the version of ROS2.
In Humble, the qos is expected to be a string
In Jazzy, it is expected to be a complex structure.