1 安装eigen
sudo apt-get install gdb
查看版本
pkg-config --modversion eigen3
3.4.0
查看安装的路径
dpkg -L libeigen3-dev
/.
/usr
/usr/include
/usr/include/eigen3
/usr/include/eigen3/Eigen
/usr/include/eigen3/Eigen/Cholesky
/usr/include/eigen3/Eigen/CholmodSupport
/usr/include/eigen3/Eigen/Core
/usr/include/eigen3/Eigen/Dense
/usr/include/eigen3/Eigen/Eigen
如果使用默认位置, 要使用就这么写头文件
#include <eigen3/Eigen/Dense>
2 刚装的系统, 安装GDB
sudo apt-get install gdb
查看版本
gdb --version
GNU gdb (Ubuntu 12.1-0ubuntu1~22.04) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
查看路径
whereis gdb
gdb: /usr/bin/gdb /etc/gdb /usr/include/gdb /usr/share/gdb /usr/share/man/man1/gdb.1.gz