symbol lookup error

[talhassj28]

• Operating System:
  • Ubuntu 20.04 (Docker image: ros:foxy-ros1-bridge-focal)
• Installation type:
  • from source (git clone -b foxy \<url>)

I am trying to convert a ROS1 bagfile into a ROS2 bagfile. The bagfile contains topics with non-standard message types (adma, ouster and sbg_driver). I have built every message type I need for ROS1 and ROS2 in separate workspaces and the ros1_bridge in another.

Workspaces:

.
├─ ros1_msgs_ws
│  └─ src
│     └─ \<Pkgs for ROS1 messages\>
├─ ros2_msgs_ws
│  └─ src
│     └─ \<Pkgs for ROS2 messages including mapping rules\>
└─ bridge_ws
   └─ src
      └─ ros1_bridge

I can succesfully print all pairs with ros2 run ros1_bridge dynamic_bridge --print-pairs | grep -E 'adma|ouster|sbg':

When I try to use the bridge for converting the messages, I get an symbol lookup error in connection with one of my custom message types (adma_ros_driver_msgs). Here is my procedure:

Terminal 1:

• Source ROS1 Noetic
• Start roscore

  Terminal 2:

• Source ROS1 Noetic
• Play ROS1 bagfile

  Terminal 3:

• Source ROS1 Noetic
• Source ROS2 Foxy
• Source Overlay of bridge_ws (source \<path to bridge_ws>install/setup.bash)
• Run ros2 run ros1_bridge dynamic_bridge --bridge-all-1to2-topics

  Terminal 4:

• Source ROS2 Foxy
• Record new ROS2 bagfile

Expected behavior

• Bridge converting all topics with known pairs

Actual behavior

• Symbol Lookup Error in Terminal 3:

Additional information

• For Terminal 3, I also tried to source the overlays of the message-workspaces, first ros1_msgs_ws and then ros2_msgs_ws before sourcing the bridge_ws, but the result remained the same.

[talhassj28]

I figured out what the problem was. It's actually not a rosbridge issue. Apparently I forgot to add the dependencies of custom ROS2 messages in the CMake file.

rosidl_generate_interfaces(${PROJECT_NAME}
  ${msg_files}
  DEPENDENCIES <dependencies i.e. std_msgs>
)

solved the issue.