cmake：将包含目录传递给外部项目 [英] cmake: pass include directories to external project

问题描述

我正在使用 cmake 和外部项目模块通过 ExternalProject_Add 。

I'm using cmake and external project module via ExternalProject_Add.

我想为外部项目指定自定义标头位置（就像在该项目中使用 include_directories 一样，但是我无法修改其 CMakeLists.txt 并不要

I'd like to specify custom header location for external project (just exactly as if I use include_directories in that project, but I am not able to modify its CMakeLists.txt and don't want to apply patch).

是否有可能将某些包含路径传递给我的外部项目？

Is there any possibility to pass some include path to my external project?

我尝试了 CMAKE_ARGS -DCMAKE_INCLUDE_PATH =<必需的路径> ，但没有成功。

I tried CMAKE_ARGS -DCMAKE_INCLUDE_PATH=<required path> without success.

推荐答案

您可以通过将脚本的路径分配给变量 CMAKE_PROJECT_< PROJECT-NAME> _INCLUDE （文档）。

You may execute additional CMake script for external project by assigning path to this script to variable CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE (documentation).

让外部项目使用CMake命令

project(e_cool)

而您想要执行

include_directories(/path/to/additional/include)

那个时候。

为此，您需要准备具有相应内容的cmake脚本：

For doing that, you need to prepare cmake script with corresponded content:

fix_e_cool.cmake ：

include_directories(/path/to/additional/include)

并通过主项目中 ExternalProject_Add 的CMAKE_ARGS选项传递此脚本：

And pass this script via CMAKE_ARGS option of ExternalProject_Add in the main project:

CMakeLists.txt ：

...
ExternalProject_Add(<name>
    ...
    CMAKE_ARGS -DCMAKE_PROJECT_e_cool_INCLUDE=${CMAKE_SOURCE_DIR}/fix_e_cool.cmake
)

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