CMake Error at CMakeLists.txt:41 (find_package): By not providing "FindEigen3.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "Eigen3", but CMake did not find one. Could not find a package configuration file provided by "Eigen3" (requested version 3.1.0) with any of the following names: Eigen3Config.cmake eigen3-config.cmake Add the installation prefix of "Eigen3" to CMAKE_PREFIX_PATH or set "Eigen3_DIR" to a directory containing one of the above files. If "Eigen3" provides a separate development package or SDK, be sure it has been installed.

这是一个关于 CMake 的问题，需要在 CMAKE_MODULE_PATH 中提供 "FindEigen3.cmake"，否则 CMake 无法找到 "Eigen3" 的包配置文件。需要将 "Eigen3" 的安装前缀添加到 CMAKE_PREFIX_PATH 中，或者设置 "Eigen3_DIR" 为包含上述文件之一的目录。如果 "Eigen3" 提供了单独的开发包或 SDK，请确保已安装。