CMake - Eigen3_DIR-NOTFOUND

ncecgwcz 于 9个月前发布在其他

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我正在尝试在Windows 10上使用CMake构建一个项目。但是我几个小时都收到这个错误：

错误：

CMake Error at of_dis/CMakeLists.txt:8 (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.

我下载了Eigen，解压缩它，并添加了一个名为EIGEN3_INCLUDE_DIR的新环境变量，值为C:\eigen-3.3.7\cmake。另外，我在项目的CMake文件中添加了一行代码，现在看起来像这样：

CMakeLists.txt：

cmake_minimum_required(VERSION 2.8)

project(IMOT_OpticalFlow_Edges)

find_package(OpenCV REQUIRED)

add_subdirectory(of_dis)

include_directories(./of_dis ${OpenCV_INCLUDE_DIRS})
INCLUDE_DIRECTORIES ( "$ENV{EIGEN3_INCLUDE_DIR}" )

set(CMAKE_CXX_STANDARD 11)

#set(OpenCV_DIR "C:/opencv/opencv3.4.1/opencv-3.4.1/build/install")
set(OpenCV_DIR "C:/opencv/opencv3.4.1/opencv-3.4.1/build/install/x64/vc14/lib")

set(SOURCE_FILES src/main.cpp src/support/Place.cpp src/support/Line.cpp src/support/Argument.cpp
    src/support/FileOperations.cpp src/frame_processing/FrameProcessor.cpp src/flow_processing/FlowProcessor.cpp
    src/edge_processing/EdgeProcessor.cpp src/detection/Detector.cpp)

add_executable(IMOT_OpticalFlow_Edges ${SOURCE_FILES})

target_link_libraries(IMOT_OpticalFlow_Edges ${OpenCV_LIBS})

CMake GUI：

我还复制了当前项目中的FindEigen3.cmake文件。但我还是一遍又一遍地犯同样的错误。有办法解决吗？

cmake

来源：https://stackoverflow.com/questions/60103934/cmake-eigen3-dir-notfound

2条答案

按热度按时间

nmpmafwu1#

为确保完整性，请总结评论：*

CMake的find_package()命令有两种操作模式：Module和Config模式。这个错误本质上是说Modulemode失败，然后Configmode找不到Eigen3包：

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.

一般来说，当安装软件包XXX（例如Eigen3）时，该软件包应该配置XXXConfig.cmake文件。这样，外部项目就可以通过在Config模式下调用find_package()来查找和使用XXX包。
因为您的Eigen3软件包 * 未安装 *，所以Eigen3Config.cmake文件没有配置。因此，Module模式搜索应该对您有用，因为Eigen3目录中只存在FindEigen3.cmake文件。对于Module模式，必须将FindEigen3.cmake文件的路径添加到CMAKE_MODULE_PATH，如错误所示。在find_package(Eigen3 ...)调用之前添加这一行允许CMakeModule模式成功：

list(APPEND CMAKE_MODULE_PATH "C:/eigen-3.3.7/cmake")

赞(0）回复(0）举报 9个月前

8yparm6h2#

我今天遇到了同样的问题，我的解决办法是
1.安装eigen。

cd path/to/eigen3.X.X (where you can find CMakeLists.txt)
mkdir build
cd build
rm ../CMakeCache.txt (only if there is one.)
cmake ..
cmake --build . --target install

1.将Eigen3_config.cmake设置为路径/to/，其中/Eigen3Config.cmake/是
在Windows上，可能是：C:\Program Files (x86)\Eigen3\share\eigen3\cmake
使用eigen 3的cmake项目参考：
https://eigen.tuxfamily.org/dox/TopicCMakeGuide.html

赞(0）回复(0）举报 9个月前

我来回答

CMake - Eigen3_DIR-NOTFOUND

错误：

CMakeLists.txt：

CMake GUI：

2条答案

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