CMake找不到Eigen3 [英] CMake Can't find Eigen3

问题描述

我已将FindEigen3.cmake复制到我的源目录中。

I have copied FindEigen3.cmake into my source directory.

然后我添加：

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR})

CMakeLists.txt，告诉CMake使用这个.cmake文件。

to my CMakeLists.txt to tell CMake to use this .cmake file.

然后在我的CMakeLists.txt我做：

Then in my CMakeLists.txt I do:

FIND_PACKAGE(Eigen3)

我有环境变量EIGEN3_INCLUDE_DIR设置为/ home / doriad / src / eigen

I have the environent variable EIGEN3_INCLUDE_DIR set to /home/doriad/src/eigen

当我运行CMake时，我得到：

When I run CMake, I get:

-- Could NOT find Eigen3 (missing: EIGEN3_INCLUDE_DIR EIGEN3_VERSION_OK) (Required is at least version "2.91.0")

这是一个来自Mercurial的新克隆，所以版本应至少为3。

This is a fresh clone from Mercurial, so the version should be at least 3.

有任何建议吗？

如果我设置模块路径INCORRECTLY，我会得到一些线索：

If I set the module path INCORRECTLY, I get some clues:

Adjust CMAKE_MODULE_PATH to find FindEigen3.cmake or set Eigen3_DIR to the
directory containing a CMake configuration file for Eigen3. The file will
have one of the following names:

Eigen3Config.cmake
eigen3-config.cmake

但是，我没有找到这些文件在源dir或构建目录的Eigen3。我试图设置Eigen3_DIR = / home / doriad / src / eigen，但是也没有工作。

However, I didn't find either of those files in either the source dir or build dir of Eigen3. I tried to set Eigen3_DIR=/home/doriad/src/eigen, but that didn't work either.

想法？

感谢，

大卫

推荐答案

对我来说，当我安装eigen3包（例如使用-DCMAKE_INSTALL_PREFIX = / home / doriad / install），并且还将使用eigen3的cmake包的CMAKE_INSTALL_PREFIX变量设置为同一目录。

It worked for me, when I installed the eigen3 package (e.g. using -DCMAKE_INSTALL_PREFIX=/home/doriad/install), and also set the CMAKE_INSTALL_PREFIX variable of the cmake package that is using eigen3 to the same directory.

由于findscripts的问题，我实际上开始使用 pkg -config 。为此，您需要在eigen3 cmake中启用pkg-config支持，并在您自己的cmake脚本中使用pkg-config宏。优点是您不再需要设置任何环境变量了。

Because of the problems with findscripts, I've actually started using pkg-config instead. For that you need to enable pkg-config support in the eigen3 cmake, and use the pkg-config macro in your own cmake script. Advantage is that you don't need to set any environment variables anymore.

find_package( PkgConfig )
pkg_check_modules( EIGEN3 REQUIRED eigen3 )
include_directories( ${EIGEN3_INCLUDE_DIRS} )

这篇关于CMake找不到Eigen3的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！