问题描述
我想指定一个相对于CMake中当前目录的路径，但无法找到解决方案.
I want to specify a path that is relative to the current directory within CMake and have not been able to find a solution.
我的项目位于类似以下的路径中:
My project lies in a path something like:
C:/Projects/ProjectA/CMakeLists.txt
并且我想使用set()命令指定以下目录的相对路径的名称
and I want to specify the name of the relative path of the following directory using the set() command
C:/External/Library
换句话说，
../../External/Library?
谢谢
推荐答案
除了您允许CMake在树外"构建的其他位置运行之外，它几乎完全相同.为此，您可以指定相对于 $ {CMAKE_CURRENT_SOURCE_DIR} 的路径，该路径是包含当前CMakeLists.txt文件的目录.
The is almost exactly the same, except that you have allow for CMake to run in another location for "out-of-tree" builds. You do this by specifying the path relative to ${CMAKE_CURRENT_SOURCE_DIR}, which is the directory containing the current CMakeLists.txt file.
${CMAKE_CURRENT_SOURCE_DIR}/../../External/Library
但是，您可能需要重新考虑，而是使用FIND_LIBRARY和FIND_FILE命令搜索一组预定义的位置，这样库的用户不必保持相同的相对结构.
But, you might want to reconsider, and instead use FIND_LIBRARY and FIND_FILE commands to search a set of predefined locations, so that users of your library don't have to keep the same relative structure.
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