1：fatal error: boost/filesystem.hpp: No such file or directory
solution：sudo apt-get install libboost-dev
2：fatal error: Eigen/Dense: No such file or directory
solution：sudo apt-get install libeigen3-dev ，然后用dpkg -S eigen查看安装的路径，最后将eigen3/Eigen放到/usr/local/include下面.
3：fatal error: opencv2/core/internal.hpp: No such file or directory
solution：sudo apt-get install libopencv-dev