找不到“Eigen3”的 CMake 包配置文件

Question

当我输入此命令时：

cd /Users/mona/ros_catkin_ws/build_isolated/pcl_ros && /Users/mona/ros_catkin_ws/install_isolated/env.sh cmake /Users/mona/ros_catkin_ws/src/perception_pcl/pcl_ros -DCATKIN_DEVEL_PREFIX=/Users/mona/ros_catkin_ws/devel_isolated/pcl_ros -DCMAKE_INSTALL_PREFIX=/Users/mona/ros_catkin_ws/install_isolated -DCMAKE_BUILD_TYPE=Release -G 'Unix Makefiles'

我收到此错误：

-- Boost version: 1.58.0
-- Found the following Boost libraries:
--   system
--   filesystem
--   thread
CMake Error at CMakeLists.txt:7 (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" 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.


-- Configuring incomplete, errors occurred!
See also "/Users/mona/ros_catkin_ws/build_isolated/pcl_ros/CMakeFiles/CMakeOutput.log".

此命令是作为运行此安装命令的一部分运行的

ROS

:

./src/catkin/bin/catkin_make_isolated --install -DCMAKE_BUILD_TYPE=Release

知道如何解决这个问题吗？

请在此处查看问题的更多详细信息：http://answers.ros.org/question/215080/how-to-add-the-installation-prefix-of-eigen3-to-cmake_prefix_path-or-set-eigen3_dir-到包含上述文件之一的目录/

Answer 1

对于 Linux 用户来说，这可能会像对我一样有帮助：只需通过以下命令安装 eigen3 lib 的开发人员包即可。

sudo apt install libeigen3-dev

Answer 2

您必须安装 Eigen3。它提供了 FindEigen3.cmake 文件。发生错误是因为您要配置的项目依赖于 Eigen3。

如果您安装了 Eigen3，请按照错误消息操作，并将 Eigen3 添加到 CMake 的搜索路径。

Answer 3

不需要从源文件构建和安装 Eigen3。 只需使用 apt-get 安装即可

sudo apt install libeigen3-dev

并检查安装路径，如下所示

dpkg -L libeigen3-dev

....

/usr/share/eigen3
/usr/share/eigen3/cmake  <--- you can find this path
/usr/share/eigen3/cmake/Eigen3Config.cmake
/usr/share/eigen3/cmake/Eigen3ConfigVersion.cmake
/usr/share/eigen3/cmake/Eigen3Targets.cmake

并将其添加到CMakeLists.txt

set(Eigen3_DIR /usr/share/eigen3/cmake)
find_package(Eigen3 REQUIRED)