CMake target_link_libraries 接口依赖 [英] CMake target_link_libraries Interface Dependencies

问题描述

我是 CMake 的新手，对与 target_link_libraries().文档提到它们可用于在一个命令中指定链接依赖项和链接接口.

I am new to CMake and a bit confused with the PUBLIC, PRIVATE and INTERFACE keywords related to target_link_libraries(). Documentation mentions that they can be used to specify both the link dependencies and the link interface in one command.

链接依赖和链接接口究竟是什么意思?

What does link dependencies and link interface actually mean?

推荐答案

如果您正在创建一个共享库并且您的源 cpp 文件 #include 另一个库的标题(例如，QtNetwork)，但是你的头文件不包含 QtNetwork 头，那么 QtNetwork 是一个 PRIVATE依赖.

If you are creating a shared library and your source cpp files #include the headers of another library (Say, QtNetwork for example), but your header files don't include QtNetwork headers, then QtNetwork is a PRIVATE dependency.

如果您的源文件和头文件包含另一个库的头文件，那么它就是一个 PUBLIC 依赖项.

If your source files and your headers include the headers of another library, then it is a PUBLIC dependency.

如果你的头文件而不是你的源文件包含另一个库的头文件，那么它是一个 INTERFACE 依赖.

If your header files other than your source files include the headers of another library, then it is an INTERFACE dependency.

PUBLIC 和 INTERFACE 依赖项的其他构建属性被传播到使用库.http://www.cmake.org/cmake/help/v3.0/manual/cmake-buildsystem.7.html#transitive-usage-requirements

Other build properties of PUBLIC and INTERFACE dependencies are propagated to consuming libraries. http://www.cmake.org/cmake/help/v3.0/manual/cmake-buildsystem.7.html#transitive-usage-requirements

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