ORB_SLAM2测试4-单目+ROS+AR（Monocular Augmented Reality Demo）遇到的问题

问题：由于想测试一下单目+AR的例子，git上使用的是数据集，我想用usb摄像头去试一下，在/home/chen/catkin_ws2/src/ORB_SLAM2/Examples/ROS/ORB_SLAM2/src/AR/ros_mono_ar.cc里，修改了所要订阅的节点/usb_cam/image_raw。回到/ORB_SLAM2目录下，删掉build，重新编译

chen@chen:~/catkin_ws2/src/ORB_SLAM2$ chmod +x build_ros.sh
chen@chen:~/catkin_ws2/src/ORB_SLAM2$ ./build_ros.sh

报错：

/usr/bin/ld: CMakeFiles/RGBD.dir/src/ros_rgbd.cc.o: undefined reference to symbol '_ZN5boost6system15system_categoryEv'
/usr/lib/x86_64-linux-gnu/libboost_system.so: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
CMakeFiles/RGBD.dir/build.make:223: recipe for target '../RGBD' failed
make[2]: *** [../RGBD] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/RGBD.dir/all' failed
make[1]: *** [CMakeFiles/RGBD.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
/usr/bin/ld: CMakeFiles/Stereo.dir/src/ros_stereo.cc.o: undefined reference to symbol '_ZN5boost6system15system_categoryEv'
/usr/lib/x86_64-linux-gnu/libboost_system.so: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
CMakeFiles/Stereo.dir/build.make:223: recipe for target '../Stereo' failed
make[2]: *** [../Stereo] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/Stereo.dir/all' failed
make[1]: *** [CMakeFiles/Stereo.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

解决：这里找到一个博客https://blog.csdn.net/sinat_38343378/article/details/78883919

。。。没有解决问题，从入门到放弃。