I’m following this guide: ROS 2 User Guide (PX4-ROS 2 Bridge) | PX4 User Guide
When I do this command: source build_ros2_workspace.bash bash exits with error code 1.
If I debug the bash script using bashdb, the script’s output is:
--- stderr: px4_msgs
Traceback (most recent call last):
File "/opt/ros/humble/lib/rosidl_typesupport_fastrtps_cpp/rosidl_typesupport_fastrtps_cpp", line 23, in <module>
sys.exit(main())
File "/opt/ros/humble/lib/rosidl_typesupport_fastrtps_cpp/rosidl_typesupport_fastrtps_cpp", line 19, in main
generate_cpp(args.generator_arguments_file)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_typesupport_fastrtps_cpp/__init__.py", line 24, in generate_cpp
return generate_files(generator_arguments_file, mapping)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_cmake/__init__.py", line 55, in generate_files
args = read_generator_arguments(generator_arguments_file)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_cmake/__init__.py", line 39, in read_generator_arguments
return json.load(h)
File "/usr/lib/python3.10/json/__init__.py", line 293, in load
return loads(fp.read(),
File "/usr/lib/python3.10/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.10/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.10/json/decoder.py", line 353, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Invalid control character at: line 177 column 3 (char 23075)
Traceback (most recent call last):
File "/opt/ros/humble/lib/rosidl_typesupport_cpp/rosidl_typesupport_cpp", line 28, in <module>
sys.exit(main())
File "/opt/ros/humble/lib/rosidl_typesupport_cpp/rosidl_typesupport_cpp", line 24, in main
generate_cpp(args.generator_arguments_file, args.typesupports)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_typesupport_cpp/__init__.py", line 28, in generate_cpp
return generate_files(
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_cmake/__init__.py", line 55, in generate_files
args = read_generator_arguments(generator_arguments_file)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_cmake/__init__.py", line 39, in read_generator_arguments
return json.load(h)
File "/usr/lib/python3.10/json/__init__.py", line 293, in load
return loads(fp.read(),
File "/usr/lib/python3.10/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.10/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.10/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 201 column 1 (char 26255)
Traceback (most recent call last):
File "/opt/ros/humble/lib/rosidl_typesupport_introspection_cpp/rosidl_typesupport_introspection_cpp", line 31, in <module>
sys.exit(main())
File "/opt/ros/humble/lib/rosidl_typesupport_introspection_cpp/rosidl_typesupport_introspection_cpp", line 27, in main
generate_cpp(args.generator_arguments_file)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_typesupport_introspection_cpp/__init__.py", line 31, in generate_cpp
return generate_files(generator_arguments_file, mapping)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_cmake/__init__.py", line 55, in generate_files
args = read_generator_arguments(generator_arguments_file)
File "/opt/ros/humble/local/lib/python3.10/dist-packages/rosidl_cmake/__init__.py", line 39, in read_generator_arguments
return json.load(h)
File "/usr/lib/python3.10/json/__init__.py", line 293, in load
return loads(fp.read(),
File "/usr/lib/python3.10/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.10/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.10/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 250 column 1 (char 32198)
gmake[2]: *** [CMakeFiles/px4_msgs__rosidl_typesupport_fastrtps_cpp.dir/build.make:314: rosidl_typesupport_fastrtps_cpp/px4_msgs/msg/detail/dds_fastrtps/action_request__type_support.cpp] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:290: CMakeFiles/px4_msgs__rosidl_typesupport_fastrtps_cpp.dir/all] Error 2
gmake[1]: *** Waiting for unfinished jobs....
gmake[2]: *** [CMakeFiles/px4_msgs__rosidl_typesupport_cpp.dir/build.make:312: rosidl_typesupport_cpp/px4_msgs/msg/action_request__type_support.cpp] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:394: CMakeFiles/px4_msgs__rosidl_typesupport_cpp.dir/all] Error 2
gmake[2]: *** [CMakeFiles/px4_msgs__rosidl_typesupport_introspection_cpp.dir/build.make:314: rosidl_typesupport_introspection_cpp/px4_msgs/msg/detail/action_request__rosidl_typesupport_introspection_cpp.hpp] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:368: CMakeFiles/px4_msgs__rosidl_typesupport_introspection_cpp.dir/all] Error 2
gmake: *** [Makefile:146: all] Error 2
---
Failed <<< px4_msgs [38.8s, exited with code 2]
[Processing: px4_msgs]
Summary: 0 packages finished [38.9s]
1 package failed: px4_msgs
1 package had stderr output: px4_msgs
1 package not processed
I installed Fast DDS using sudo apt install fastddsgen.
I got px4_msgs using git clone https://github.com/PX4/px4_msgs.git