英文:
How to check whether a target is an aliased target in CMake?
问题
I understand that you want a translation of the code portion you provided. Here it is:
我正在编写一个 CMake 函数，该函数接受一个目标名称作为参数。我想要检测它是静态库类型还是共享库类型，如果是共享库，则将其复制到指定目录。
我可以正确处理通过 `add_executable()`、`add_library()` 直接提供源代码的目标。我可以使用以下方式处理它们：
if(TARGET ${targetName})
message(STATUS "这是一个普通目标")
endif()
**还有一些导入和别名目标**，但我无法确定它们。我想使用以下方式：
if(ALIASES_TARGET ${targetName})
message(STATUS "这是一个别名目标")
endif()
但这没有起作用。
注意：CMake 系统将创建一些名为 "garbage coding" 的目标，似乎表示分号字符 `;`，我将忽略它们。
如何确定给定的目标名称是否是别名目标？
Is there anything else you need help with?
英文:
I'm writing an CMake function which accepts a target name as an argument. I would like to detect whether it is static library type or shared library type, and if it is shared library, copy it to specified directory.
I can correctly handle targets that created via add_executable(), add_library() that directly gives source code. I can handle them with:
if(TARGET ${targetName})
message(STATUS "this is an ordinary target")
endif()
There are imported-and-aliased-targets, but I can't determine them. I would like to use
if(ALIASES_TARGET ${targetName})
message(STATUS "this is an aliases target")
endif()
But this didn't work.
N.B. CMake system will create some "garbage coding" named targets, seems like representing semicolon chars ;, which I will ignore.
How can I determine if an given target name is an aliased target?
function(my_fancy_function targetName dstDir)
if(TARGET ${targetName})
message(STATUS "this is an ordinary target")
endif()
if(ALIASES_TARGET ${targetName}) # how to change this line?
message(STATUS "this is an aliases target")
endif()
endfunction()
答案1
得分: 1
使用 ALIASED_TARGET 目标属性。根据文档：
如果这是一个别名目标，该属性包含别名的目标名称。
例如：
get_property(aliased_target TARGET "${targetName}" PROPERTY ALIASED_TARGET)
if("${aliased_target}" STREQUAL "")
# 不是别名
else()
# 是别名
endif()
英文:
Use the ALIASED_TARGET target property. From the docs:
> If this is an Alias Target, this property contains the name of the target aliased.
Ex.
get_property(aliased_target TARGET "${targetName}" PROPERTY ALIASED_TARGET)
if("${aliased_target}" STREQUAL "")
# is not an alias
else()
# is an alias
endif()
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