CMake检查主项目是否被调用 [英] CMake check if the main project was called

问题描述

我有这种项目目录设计:

I've got this kind of project directory design:

Main:
    CMakeLists.txt
    subproject1:
         CMakeLists.txt   
    subproject2
         CMakeLists.txt   

如果subproject1 cmake是由Main项目调用的，还是作为独立项目调用的，该如何检入subproject1/CMakeLists.txt文件?

How can I check in subproject1/CMakeLists.txt file if subproject1 cmake was called by the Main project, or as a standalone one?

推荐答案

在这里:

if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
# We are building as stand-alone project
project(subproject1)
...
else()
# We are building as part of Main project
endif()

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