安装镭神M10雷达编译报错 fatal error: pcap.h: 没有那个文件或目录 #include ＜pcap.h＞

项目场景：

环境：ubuntu 20.04 ros2 foxy 安装雷达

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问题描述

安装镭神M10串口版雷达，编译报错

m@r:~/ros2_ws$ colcon build --packages-select lslidar_driver
Starting >>> lslidar_driver
--- stderr: lslidar_driver                             
** WARNING ** io features related to pcap will be disabled
** WARNING ** io features related to png will be disabled
** WARNING ** io features related to libusb-1.0 will be disabled
In file included from /home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/src/input.cc:1:
/home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/include/lslidar_driver/input.h:32:10: fatal error: pcap.h: 没有那个文件或目录
   32 | #include <pcap.h>
      |          ^~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/lslidar_driver_node.dir/build.make:89：CMakeFiles/lslidar_driver_node.dir/src/input.cc.o] 错误 1
make[2]: *** 正在等待未完成的任务....
In file included from /home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/include/lslidar_driver/lslidar_driver.h:37,
                 from /home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/src/lslidar_driver_node.cc:19:
/home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/include/lslidar_driver/input.h:32:10: fatal error: pcap.h: 没有那个文件或目录
   32 | #include <pcap.h>
      |          ^~~~~~~~
In file included from /home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/include/lslidar_driver/lslidar_driver.h:37,
                 from /home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/src/lslidar_driver.cc:31:
/home/m/ros2_ws/src/LSLIDAR_M10_ROS2/src/lslidar_driver/include/lslidar_driver/input.h:32:10: fatal error: pcap.h: 没有那个文件或目录
   32 | #include <pcap.h>
      |          ^~~~~~~~
compilation terminated.
compilation terminated.
make[2]: *** [CMakeFiles/lslidar_driver_node.dir/build.make:76：CMakeFiles/lslidar_driver_node.dir/src/lslidar_driver.cc.o] 错误 1
make[2]: *** [CMakeFiles/lslidar_driver_node.dir/build.make:63：CMakeFiles/lslidar_driver_node.dir/src/lslidar_driver_node.cc.o] 错误 1
make[1]: *** [CMakeFiles/Makefile2:78：CMakeFiles/lslidar_driver_node.dir/all] 错误 2
make: *** [Makefile:141：all] 错误 2
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Failed   <<< lslidar_driver [4.40s, exited with code 2]
                                
Summary: 0 packages finished [4.77s]
  1 package failed: lslidar_driver
  1 package had stderr output: lslidar_driver

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原因分析：

这个报错是因为没有安装libcap造成的

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解决方案：

sudo apt-get install libpcap-dev