补充：解决Ubuntu20.04.4安装KRS时无法下载github代码问题

官方代码下载自github（gitlab），如何访问外网的问题这里可以合法合规解决，就是先把github的代码导入gitee，再采取同步的方式解决：

原代码段如下：仔细看代码内容，链接路径全为github。

cat << 'EOF' > krs_rolling.repos
repositories:
  ros2/ament_lint:
    type: git
    url: https://github.com/ament/ament_lint
    version: master
  ros2/launch:
    type: git
    url: https://github.com/ros2/launch
    version: master
  ros2/gazebo_ros_pkgs:
    type: git
    url: https://github.com/ros-simulation/gazebo_ros_pkgs
    version: da14a69e79502cd08064ccd261366ff023a9162a
 
  perception/image_common:
    type: git
    url: https://github.com/ros-perception/image_common
    version: 9729de81f7dff6156f644d6152b200f687360f1f
  perception/image_pipeline:
    type: git
    url: https://github.com/ros-acceleration/image_pipeline
    version: beta
  perception/vision_opencv:
    type: git
    url: https://github.com/ros-perception/vision_opencv
    version: 7bbc5ecc232e8faf36b45efaa2b6bc979b04157f

  tracing/ros2_tracing:
    type: git
    url: https://gitlab.com/ros-tracing/ros2_tracing.git
    version: master
  tracing/tracetools_acceleration:
    type: git
    url: https://github.com/ros-acceleration/tracetools_acceleration
    version: main

  acceleration/acceleration_firmware:
    type: git
    url: https://github.com/ros-acceleration/acceleration_firmware
    version: main
  acceleration/acceleration_firmware_kv260:
    type: zip
    url: https://github.com/ros-acceleration/acceleration_firmware_kv260/releases/download/v0.9.0/acceleration_firmware_kv260.zip
  acceleration/adaptive_component:
    type: git
    url: https://github.com/ros-acceleration/adaptive_component
    version: main
  acceleration/ament_acceleration:
    type: git
    url: https://github.com/ros-acceleration/ament_acceleration
    version: main
  acceleration/ament_vitis:
    type: git
    url: https://github.com/ros-acceleration/ament_vitis
    version: beta
  acceleration/colcon-acceleration:
    type: git
    url: https://github.com/ros-acceleration/colcon-acceleration
    version: main
  acceleration/ros2_kria:
    type: git
    url: https://github.com/ros-acceleration/ros2_kria
    version: main
  acceleration/ros2acceleration:
    type: git
    url: https://github.com/ros-acceleration/ros2acceleration
    version: main
  acceleration/vitis_common:
    type: git
    url: https://github.com/ros-acceleration/vitis_common
    version: master
  acceleration/acceleration_examples:
    type: git
    url: https://github.com/ros-acceleration/acceleration_examples
    version: beta

EOF

修改为如下代码：（我已经将github代码导入gitee，声明纯学习目的，方便国内开发者）

cat << 'EOF' > krs_rolling.repos
repositories:
  ros2/ament_lint:
    type: git
    url: https://gitee.com/mk8/ament_lint
    version: master
  ros2/launch:
    type: git
    url: https://gitee.com/mk8/launch
    version: master
  ros2/gazebo_ros_pkgs:
    type: git
    url: https://gitee.com/mk8/gazebo_ros_pkgs
    version: da14a69e79502cd08064ccd261366ff023a9162a
 
  perception/image_common:
    type: git
    url: https://gitee.com/mk8/image_common
    version: 9729de81f7dff6156f644d6152b200f687360f1f
  perception/image_pipeline:
    type: git
    url: https://gitee.com/mk8/image_pipeline
    version: beta
  perception/vision_opencv:
    type: git
    url: https://gitee.com/mk8/vision_opencv
    version: 7bbc5ecc232e8faf36b45efaa2b6bc979b04157f

  tracing/ros2_tracing:
    type: git
    url: https://gitee.com/mk8/ros2_tracing
    version: master
  tracing/tracetools_acceleration:
    type: git
    url: https://gitee.com/mk8/tracetools_acceleration
    version: main

  acceleration/acceleration_firmware:
    type: git
    url: https://gitee.com/mk8/acceleration_firmware
    version: main
  acceleration/adaptive_component:
    type: git
    url: https://gitee.com/mk8/adaptive_component
    version: main
  acceleration/ament_acceleration:
    type: git
    url: https://gitee.com/mk8/ament_acceleration
    version: main
  acceleration/ament_vitis:
    type: git
    url: https://gitee.com/mk8/ament_vitis
    version: beta
  acceleration/colcon-acceleration:
    type: git
    url: https://gitee.com/mk8/colcon-acceleration
    version: main
  acceleration/ros2_kria:
    type: git
    url: https://gitee.com/mk8/ros2_kria
    version: main
  acceleration/ros2acceleration:
    type: git
    url: https://gitee.com/mk8/ros2acceleration
    version: main
  acceleration/vitis_common:
    type: git
    url: https://gitee.com/mk8/vitis_common
    version: master
  acceleration/acceleration_examples:
    type: git
    url: https://gitee.com/mk8/acceleration_examples
    version: beta

EOF

另外，对比上述代码，还少了一个zip包，该包是官方生成的kv260嵌入式bsp支持包，这个没办法，请自己下载。

acceleration/acceleration_firmware_kv260:
    type: zip
    url: https://github.com/ros-acceleration/acceleration_firmware_kv260/releases/download/v0.9.0/acceleration_firmware_kv260.zip

上述链接请手动下载即可，下载之后

cd src/acceleration

拷贝你的acceleration_firmware_kv260.zip到该目录下，解压即可

这个插曲之后再进行安装编译。

编译完成如图：