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我安装ceres-solver使用

brew install ceres-solver

在 macOS 上。

CMake.txt我为使用 Ceres 的客户项目创建了一个。

cmake_minimum_required(VERSION 2.8)

project(helloworld)

find_package(Ceres REQUIRED)
include_directories(${CERES_INCLUDE_DIRS})

# helloworld
add_executable(helloworld helloworld.cpp)
target_link_libraries(helloworld ${CERES_LIBRARIES})

但是，当我运行以下命令时

cmake . -Bbuild

我收到以下错误

CMake Error at /usr/local/lib/cmake/Ceres/CeresConfig.cmake:88 (message):
  Failed to find Ceres - Found Eigen dependency, but the version of Eigen
  found (3.3.90) does not exactly match the version of Eigen Ceres was
  compiled with (3.3.7).  This can cause subtle bugs by triggering violations
  of the One Definition Rule.  See the Wikipedia article
  http://en.wikipedia.org/wiki/One_Definition_Rule for more details
Call Stack (most recent call first):
  /usr/local/lib/cmake/Ceres/CeresConfig.cmake:223 (ceres_report_not_found)
  CMakeLists.txt:5 (find_package)


CMake Error at CMakeLists.txt:5 (find_package):
  Found package configuration file:

    /usr/local/lib/cmake/Ceres/CeresConfig.cmake

  but it set Ceres_FOUND to FALSE so package "Ceres" is considered to be NOT
  FOUND.


-- Configuring incomplete, errors occurred!

如何删除 Eigen 的冲突版本？我不记得我过去是如何安装它的。我也尝试过运行brew uninstall Eigen，但这并没有使错误消失。

谢谢你的帮助。

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1 回答 1

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因此，Ceres 是使用 Eigen 3.3.7 构建的，但您的 helloworld 构建正在寻找 Eigen 3.3.90。我发现跟踪此类 cmake 问题的最佳方法是在运行 cmake 配置步骤时使用--trace-expandand选项。--debug-output它会生成大量输出，因此将其全部重定向到一个文件，然后搜索 find_package eigen 语句。例如

cmake . -Bbuild --debug-output --trace-expand > cmake.out 2>&1
于 2019-10-21T18:38:04.183 回答