如何列出目标的PRIVATE，PUBLIC和INTERFACE包含目录？ [英] How can I list the PRIVATE, PUBLIC and INTERFACE include directories of a target?

问题描述

这个问题：

列出CMake中的include_directories

教我们如何列出CMake目录的包含目录。我们如何为 target 做到这一点，并分隔PUBLIC，PRIVATE和INTERFACE目录？

teaches us how to list include directories for a CMake directory. How do we do that for a target, and separating the PUBLIC, PRIVATE and INTERFACE directories?

推荐答案

好吧，相同的getter可以用于目录和目标，只是语法略有不同：

Well, the same getter works for directories and targets, just with slightly different syntax:

get_property(dirs1 TARGET my_target PROPERTY INCLUDE_DIRECTORIES)

现在，这将使我们结合两套包含目录： PUBLIC 和 PRIVATE ，但不是 INTERFACE 。我们还会得到：

Now, this will get us the union of two sets of include directories: PUBLIC and PRIVATE, but not INTERFACE. We also get:

get_property(dirs2 TARGET my_target PROPERTY INTERFACE_INCLUDE_DIRECTORIES)

现在：

• PUBLIC 目录是dirs1与dirs2的​​交集（dirs1∩dirs2）。


• PRIVATE 目录是dirs1 set-dirs2 （dirs1∖dirs2）。


• INTERFACE 目录是dirs2 set-减去dirs1（dirs2∖dirs1）。

• The PUBLIC directories are dirs1 intersection-with dirs2 (dirs1 ∩ dirs2).
• The PRIVATE directories are dirs1 set-minus dirs2 (dirs1 ∖ dirs2).
• The INTERFACE directories are dirs2 set-minus dirs1 (dirs2 ∖ dirs1).

如您所链接的问题所述，一旦有了目录列表，就可以像这样打印出来：

As described in the question you linked to, once you have your list of directories, you can print it out like so:

foreach(dir ${dirs2})
  message(STATUS "Interface include directory for my_target: ${dir}")
endforeach()

如果您确实需要具体生成三个列表，请参见此问题有关如何执行形成联盟，交集和差额。

If you need to actually, concretely, generate the three lists - see this question about how to perform union, intersection and difference.

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