“${CMAKE_CURRENT_SOURCE_DIR}"和“${CMAKE_CURRENT_SOURCE_DIR}"有什么区别?和“."在 INCLUDE_DIRECTORIES 中? [英] What is the difference between "${CMAKE_CURRENT_SOURCE_DIR}" and "." in INCLUDE_DIRECTORIES?

问题描述

我应该使用

INCLUDE_DIRECTORIES(
    .
)

或

INCLUDE_DIRECTORIES(
    ${CMAKE_CURRENT_SOURCE_DIR}
)

有什么区别，如果有的话?我见过的大多是."在现有代码中，但在互联网上搜索一个点有点困难......

What is the difference, if any? I've seen mostly "." in existing code, but searching for a dot on the Internet is kind of difficult ...

推荐答案

两种用法都生成几乎相同的输出，因为 CMake 会跟踪当前目录并替换出现的.".用${CMAKE_CURRENT_SOURCE_DIR}/.".唯一的区别是."变体具有额外的路径组件/".附加.

Both uses generate nearly the same output, since CMake tracks the current directory and replaces the occurrence of "." with "${CMAKE_CURRENT_SOURCE_DIR}/.". The only difference is that the "." variant has the extra path component "/." appended.

您选择哪一个取决于您的品味.

Whichever you choose is a matter of taste here.

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