在cmake中创建目标后，如何将更多源文件添加到目标 [英] How can I add more sources files to a target after the target has been created in cmake

问题描述

我使用以下示例来说明我的问题：假设现在我已经在CMake中使用以下命令创建了目标：

I use the following example to show my question： suppose now I have created a target using the following commands in CMake:

add_custom_target(MyProject  SOURCES a.txt b.txt)

创建此目标后，将存储更多文件放置到目标上，然后使用以下命令：

After this target is created, more files are put to the target, and in order to do that I use the following command:

   set(moreFiles c.txt d.txt e.txt)
   set_target_properties(MyProject PROPERTIES SOURCES  ${moreFiles})    

但是VC向目标添加的文件仅为c.txt，其他文件（例如a.txt，b.txt，d.txt和e.txt）在目标中不可用。我有什么可以改善的吗？

However, in VC the added files to the target is only c.txt, other files such as a.txt,b.txt,d.txt and e.txt are not available in the target. Anything I can do for improvement?

推荐答案

对于具有属性的非平凡操作，最好放弃诸如 set_target_properties 之类的速记功能 code>并使用 set_property 的全部功能：

For non-trivial manipulations with properties, it's best to forego the shorthand functions like set_target_properties and use the full power of set_property:

set_property(TARGET MyProject APPEND PROPERTY SOURCES ${moreFiles})

如果出于某种原因想要继续使用 set_target_properties ，您必须先查询当前值，并引用整个结果：

If, for some reason, you'd want to keep using set_target_properties for that, you'd have to query the current value first, and quote the entire result:

get_property(currentFiles TARGET MyProject PROPERTY SOURCES)
set_target_properties(MyProject PROPERTIES SOURCES "${currentFiles};${moreFiles}")

引号很重要，因为简写的 set _ * _ properties 命令期望其参数为 ...属性prop1 value1 prop2 value2 ，即属性名称和值的交替列表。原始命令将属性 SOURCES 设置为 c.txt ，然后将属性 d设置为。 txt 转换为值 e.txt 。

The quoting is important, because the shorthand set_*_properties commands expect their arguments to be ... PROPERTIES prop1 value1 prop2 value2, that is, an alternating list of property names and values. Your original command set the property SOURCES to c.txt, and then the property d.txt to the value e.txt.

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