Linux 对于本地编译的库，FindXXX.cmake 文件的正确位置是什么？
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What is the right place for FindXXX.cmake files for locally compiled libs?
提问by Latanius
I have a lib I installed by hand (to /usr/local) on a Linux system (Eigen3, by the way). There is a FindEigen3.cmake bundled with the lib but that is not installed anywhere by default.
我在 Linux 系统（顺便说一下，Eigen3）上手动安装了一个库（到 /usr/local）。有一个 FindEigen3.cmake 与 lib 捆绑在一起，但默认情况下没有安装在任何地方。
There is /usr/share/cmake-x.y/Modules where CMake looks for additional modules, but putting these files there doesn't seem the way to do things. Is there an equivalent place under /usr/local that is also scanned by default? Or what is the standard way of creating custom library modules?
在 /usr/share/cmake-xy/Modules 中，CMake 会查找其他模块，但将这些文件放在那里似乎不是做事的方式。/usr/local 下是否有同样默认扫描的等效位置？或者创建自定义库模块的标准方法是什么？
(Although the question isn't strictly connected to programming, I think library authors may also encounter the same question from the other side: where to put these files when installing manually.)
（虽然这个问题与编程并没有严格的关系，但我认为库作者也可能会从另一面遇到同样的问题：手动安装时将这些文件放在哪里。）
采纳答案by DLRdave
See the comments in the CMake documentation for the "find_package" command:
请参阅 CMake 文档中“find_package”命令的注释：
http://cmake.org/cmake/help/v2.8.8/cmake.html#command:find_package
http://cmake.org/cmake/help/v2.8.8/cmake.html#command:find_package
It speaks of writing a "project-config" file, and where to install it, such that find_package(Eigen3) will work without having a FindEigen3.cmake find module... It is verbose, but the information is in there.
它谈到编写一个“项目配置”文件，以及在哪里安装它，这样 find_package(Eigen3) 将在没有 FindEigen3.cmake find 模块的情况下工作......它很冗长，但信息在那里。
See also user contributed wiki pages such as this one:
另请参阅用户贡献的 wiki 页面，例如：
回答by ltc
You need to set the CMAKE_MODULE_PATH to include the directory that the FindEigen3.cmake file is in before calling find_package. I believe that:
在调用 find_package 之前，您需要设置 CMAKE_MODULE_PATH 以包含 FindEigen3.cmake 文件所在的目录。我相信：
set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} <your path> )
will do the trick, but I do not have a setup to test that available at the moment so you may have to massage that technique a bit.
可以解决问题，但我目前没有测试可用的设置，因此您可能需要稍微按摩一下该技术。
回答by beduin
In our project we place FIndXXX.cmake modules in folder project root dir/cmake/modules. For this to work you have to specify in project root dir/CMakeLists.txt(similiar to what DLRdave has already said):
在我们的项目中，我们将 FIndXXX.cmake 模块放在文件夹项目根目录 dir/cmake/modules 中。为此，您必须在项目根目录/CMakeLists.txt 中指定（类似于 DLRdave 已经说过的内容）：
set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
