使用target_link_libraries以绝对路径作为库路径来扩展平台库名称？ [英] Platform library name expansion using target_link_libraries with absolute path as library path?

问题描述

仅使用库名称在CMake中使用target_link_libraries，例如

Using target_link_libraries in CMake with just the library name, e.g.

target_link_library( myProject SomeLibrary )

会根据平台将SomeLibrary扩展为SomeLibrary.lib，libSomeLibrary.so等。但是，如果指定了完整路径，则不会基于平台扩展库名，例如

will expand SomeLibrary to SomeLibrary.lib, libSomeLibrary.so, etc. depending on platform. However, if a full path is specified then the library name is not expanded based on platform, e.g.

target_link_library( myProject ${myProject_SOURCE_DIR}/libs/SomeLibrary )

如何获取要基于平台扩展的库名？目前，我正在脚本中检测平台并自己调整库名称，感觉有点难看。

How can I get the library name to be expanded based on platform? Currently, I'm detecting platform in the script and adjusting the library names myself which feels a little ugly.

（背景：在此问题建议我在指定库时使用绝对路径，而不要使用链接目录）

(Background: over on this question I'm advised to use absolute paths when specifying libraries rather than using link_directories)

推荐答案

使用 find_library 。

而不是硬编码在完整路径下，您只应提供库的名称以及可能会在其中找到的位置（可能是可配置的）列表，然后由 find_library 进行其余操作。如果成功，则可以将 find_library 调用的结果直接输入到 target_link_libraries 。

Instead of hardcoding the full path, you should only give the name of the library and a list of (possibly configurable) locations where it might be found and have find_library do the rest. If successful, the result of the find_library call can be fed right into target_link_libraries.

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