Build error when following README

[chcorbato]

There seem to be a problem with the nav2_msgs package installed because of the first instruction to install some required packages:
$ sudo apt install ros-foxy-slam-toolbox ros-foxy-gazebo-ros-pkgs python3-vcstool

Isn't that colliding with the sources for navigation2 in the ws?

$ sudo apt install ros-foxy-slam-toolbox ros-foxy-gazebo-ros-pkgs python3-vcstool
$ cd [ros2_ws]/src
$ wget https://raw.githubusercontent.com/MROS-RobMoSys-ITP/MROS-Hands-On/main/mros-hands-on.repos
$ vcs import < mros-hands-on.repos
$ cd ..
$ rosdep install -y -r -q --from-paths src --ignore-src --rosdistro foxy --skip-keys="turtlebot2_drivers map_server $ astra_camera amcl"
$ colcon build --symlink-install
[...]
--- stderr: nav2_map_server                  
In file included from /opt/ros/foxy/include/nav2_msgs/srv/load_map.hpp:9,
                 from /home/parallels/handson_ws/src/navigation2/nav2_map_server/include/nav2_map_server/map_server.hpp:26,
                 from /home/parallels/handson_ws/src/navigation2/nav2_map_server/test/unit/test_map_io.cpp:45:
/opt/ros/foxy/include/nav2_msgs/srv/detail/load_map__traits.hpp:23:25: error: expected initializer before ‘<’ token
   23 | inline const char * name<nav2_msgs::srv::LoadMap_Request>()
      |                         ^
/opt/ros/foxy/include/nav2_msgs/srv/detail/load_map__traits.hpp:56:25: error: expected initializer before ‘<’ token
   56 | inline const char * name<nav2_msgs::srv::LoadMap_Response>()
      |                         ^
/opt/ros/foxy/include/nav2_msgs/srv/detail/load_map__traits.hpp:85:25: error: expected initializer before ‘<’ token
   85 | inline const char * name<nav2_msgs::srv::LoadMap>()
      |                         ^
make[2]: *** [test/unit/CMakeFiles/test_map_io.dir/build.make:63: test/unit/CMakeFiles/test_map_io.dir/test_map_io.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:364: test/unit/CMakeFiles/test_map_io.dir/all] Error 2
make: *** [Makefile:141: all] Error 2
---
Failed   <<< nav2_map_server [39.5s, exited with code 2]
Aborted  <<< nav2_behavior_tree [3min 20s]                                           

Summary: 13 packages finished [6min 25s]
  1 package failed: nav2_map_server
  1 package aborted: nav2_behavior_tree
  3 packages had stderr output: dynamixel_sdk hls_lfcd_lds_driver nav2_map_server
  44 packages not processed

[jginesclavero]

Hi @chcorbato ! I have just installed everything, following the README in an empty lxc ubuntu20:04/foxy container and works well.
Did you do a source /opt/ros/foxy/setup.bash before build the ws?

[chcorbato]

Not sure what I missed to do, but after trying again following the README it worked.

[chcorbato]

I am trying to install again the Hands-in demo from scratch in a new workspace, and I'm stuck again in this error.
If someone who managed to install and run the demo successfully can shed some light, it is very much welcome.
@estherag @marioney @jginesclavero @fmrico

[estherag]

I'm not sure if it is required but I had the same issues until I installed these packages by hand required for turtlebot3:

sudo apt install ros-foxy-cartographer
sudo apt install ros-foxy-cartographer-ros
sudo apt install ros-foxy-navigation2
sudo apt install ros-foxy-nav2-bringup

[jginesclavero]

@chcorbato Could we meeting tomorrow to reproduce the issue? How did you fix it last time?

[chcorbato]

I'm not sure if it is required but I had the same issues until I installed these packages by hand required for turtlebot3:

sudo apt install ros-foxy-cartographer
sudo apt install ros-foxy-cartographer-ros
sudo apt install ros-foxy-navigation2
sudo apt install ros-foxy-nav2-bringup

This did not solve it for me. This is the error I keep getting:

--- stderr: nav2_map_server                                               
In file included from /opt/ros/foxy/include/nav2_msgs/srv/save_map.hpp:9,
                 from /home/parallels/test_mros_ws/src/navigation2/nav2_map_server/include/nav2_map_server/map_saver.hpp:24,
                 from /home/parallels/test_mros_ws/src/navigation2/nav2_map_server/test/component/test_map_saver_node.cpp:23:
/opt/ros/foxy/include/nav2_msgs/srv/detail/save_map__traits.hpp:23:25: error: expected initializer before ‘<’ token
   23 | inline const char * name<nav2_msgs::srv::SaveMap_Request>()
      |                         ^
/opt/ros/foxy/include/nav2_msgs/srv/detail/save_map__traits.hpp:52:25: error: expected initializer before ‘<’ token
   52 | inline const char * name<nav2_msgs::srv::SaveMap_Response>()
      |                         ^
/opt/ros/foxy/include/nav2_msgs/srv/detail/save_map__traits.hpp:81:25: error: expected initializer before ‘<’ token
   81 | inline const char * name<nav2_msgs::srv::SaveMap>()
      |                         ^
In file included from /opt/ros/foxy/include/nav2_msgs/srv/load_map.hpp:9,
                 from /home/parallels/test_mros_ws/src/navigation2/nav2_map_server/include/nav2_map_server/map_server.hpp:26,
                 from /home/parallels/test_mros_ws/src/navigation2/nav2_map_server/test/unit/test_map_io.cpp:45:
/opt/ros/foxy/include/nav2_msgs/srv/detail/load_map__traits.hpp:23:25: error: expected initializer before ‘<’ token
   23 | inline const char * name<nav2_msgs::srv::LoadMap_Request>()
      |                         ^
/opt/ros/foxy/include/nav2_msgs/srv/detail/load_map__traits.hpp:56:25: error: expected initializer before ‘<’ token
   56 | inline const char * name<nav2_msgs::srv::LoadMap_Response>()
      |                         ^
/opt/ros/foxy/include/nav2_msgs/srv/detail/load_map__traits.hpp:85:25: error: expected initializer before ‘<’ token
   85 | inline const char * name<nav2_msgs::srv::LoadMap>()
      |                         ^
make[2]: *** [test/unit/CMakeFiles/test_map_io.dir/build.make:63: test/unit/CMakeFiles/test_map_io.dir/test_map_io.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:364: test/unit/CMakeFiles/test_map_io.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make[2]: *** [test/component/CMakeFiles/test_map_saver_node.dir/build.make:63: test/component/CMakeFiles/test_map_saver_node.dir/test_map_saver_node.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:475: test/component/CMakeFiles/test_map_saver_node.dir/all] Error 2
make: *** [Makefile:141: all] Error 2
---
Failed   <<< nav2_map_server [4.75s, exited with code 2]
Aborted  <<< nav2_waypoint_follower [0.41s]                                  

Summary: 11 packages finished [8.99s]
  1 package failed: nav2_map_server
  1 package aborted: nav2_waypoint_follower
  1 package had stderr output: nav2_map_server
  49 packages not processed

[chcorbato]

@chcorbato Could we meeting tomorrow to reproduce the issue? How did you fix it last time?

Thanks @jginesclavero , I am available before 10am and after 13pm, except 15.00-16.00