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I solved the problem throughout the week. The problem of the Pi 4 not compiling for ros2 was actually two problems:

-. Rviz is broken on the pi 4 and will probably not compile due to missing atomic functions. You will have to delete it from the src in order to compile ROS2

-. The ros2/mimick library that mimick_vendor vendor was missing the ability to detect arm7l, the architecture the pi uses on the 32bit setting, and using a workaround on the snaipe issue's page, I added arm7l detection to the cmake file of ROS2 mimick and now it works. Until the pull request is accepted, replace the mimick_vendor CMakeLists.txt file with mine at https://github.com/rydb/Mimick/blob/ros2/CMakeLists.txt

I solved the problem throughout the week. The problem of the Pi 4 not compiling for ros2 was actually two problems:

-. Rviz is broken on the pi 4 and will probably not compile due to missing atomic functions. You will have to delete it from the src in order to compile ROS2ROS2. What ever Rviz functionality you need will need to be run on a different computer that can run it.

-. The ros2/mimick library that mimick_vendor vendor was missing the ability to detect arm7l, the architecture the pi uses on the 32bit setting, and using a workaround on the snaipe issue's page, I added arm7l detection to the cmake file of ROS2 mimick and now it works. Until the pull request is accepted, replace the mimick_vendor CMakeLists.txt file with mine at https://github.com/rydb/Mimick/blob/ros2/CMakeLists.txt

I solved the problem throughout the week. The problem of the Pi 4 not compiling for ros2 was actually two problems:

-. Rviz is broken on the pi 4 and will probably not compile due to missing atomic functions. You will have to delete it from the src in order to compile ROS2. What ever Rviz functionality you need will need to be run on a different computer that can run it.

-. The ros2/mimick library that mimick_vendor vendor was missing the ability to detect arm7l, the architecture the pi uses on the 32bit setting, and using a workaround on the snaipe issue's page, I added arm7l detection to the cmake file of ROS2 mimick and now it works. Until the pull request is accepted, replace the mimick_vendor CMakeLists.txt file with mine at https://github.com/rydb/Mimick/blob/ros2/CMakeLists.txt

I solved the problem throughout the week. The problem of the Pi 4 not compiling for ros2 was actually two problems:

-. Rviz is broken on the pi 4 and will probably not compile due to missing atomic functions. You will have to delete it from the src in order to compile ROS2. What ever Rviz functionality you need will need to be run on a different computer that can run it.

-. The ros2/mimick library that mimick_vendor vendor was missing the ability to detect arm7l, the architecture the pi uses on the 32bit setting, and using a workaround on the snaipe issue's page, I added arm7l detection to the cmake file of ROS2 mimick and now it works. Until the pull request is accepted, replace the mimick_vendor CMakeLists.txt file with mine at https://github.com/rydb/Mimick/blob/ros2/CMakeLists.txt

Edit: I built ros2 wit with the following command: colcon build --symlink-install --cmake-args "-DCMAKE_SHARED_LINKER_FLAGS='-latomic'" "-DCMAKE_EXE_LINKER_FLAGS='-latomic'"^C