Eigen+mingw32

下载cmake源文件并放置在全英文路径
cmake-gui

configure
选择mingw makefile-->默认环境(第一个选项)
修改cmake-install-prefix路径至自己的文件夹
configure
generate
进入build文件夹后在该文件夹打开命令行窗口
mingw32-make
mingw32-make install
将D:/hezexian/Eigen3/include添加值系统路径

cmake_minimum_required(VERSION 3.10)
project(L2)

include_directories(${EIGEN3_INCLUDE_DIR} D:/hezexian/Eigen3/include/eigen3)

add_executable(homework2 L2-2.cpp)