using the proto file as the message to publish

[Amazingmum]

Starting >>> rosidl_adapter_proto
Starting >>> rosidl_typesupport_protobuf
Starting >>> conti_radar
Finished <<< rosidl_adapter_proto [0.39s]
Finished <<< rosidl_typesupport_protobuf [0.39s]
Starting >>> rosidl_typesupport_protobuf_c
Starting >>> rosidl_typesupport_protobuf_cpp
--- stderr: conti_radar
libconti_radar_rviz_canbus_node_lib.so：对‘rosidl_message_type_support_t const* rosidl_typesupport_cpp::get_message_type_support_handle<conti_radar::drivers::ContiRadar>()’未定义的引用
collect2: error: ld returned 1 exit status
make[2]: *** [rviz_node_test] Error 1
make[1]: *** [CMakeFiles/rviz_node_test.dir/all] Error 2
make: *** [all] Error 2

Failed <<< conti_radar [0.51s, exited with code 2]
Aborted <<< rosidl_typesupport_protobuf_cpp [0.11s]
Aborted <<< rosidl_typesupport_protobuf_c [0.14s]

Summary: 2 packages finished [1.13s]
1 package failed: conti_radar
2 packages aborted: rosidl_typesupport_protobuf_c rosidl_typesupport_protobuf_cpp
1 package had stderr output: conti_radar

[FlorianReimold]

Hi Amazingmum,

What your log tells you is that a package conti_radar has build issues:

1 package failed: conti_radar
[...]
1 package had stderr output: conti_radar

Regards
Florian

[Amazingmum]

Tks for your attention.
Its just the warming,i use the glog in my code but i don't initialize some parameters.
I wanna use .proto file as msg but it seems not work

[FlorianReimold]

I cannot read what you posted in Chinese there, so you have to interpret that yourself. But at least it says that it Failed. So I assume it's more than just a warning? I think you should let colcon run in verbose mode to see what went wrong.

Btw, even if you end up with a working build, you may run into this runtime issue. if you are using a recent ROS version. We are still looking for help to solve it