CPack：从子目录（googletest目录）中排除INSTALL命令 [英] CPack: Exclude INSTALL commands from subdirectory (googletest directory)

问题描述

我正在将CMake用于一个项目，并将googletest用于我的测试用例。
环顾互联网，将googletest源代码复制到存储库的子文件夹中并将其包含在 add_subdirectory（googletest）中似乎是一种常见的做法。我做到了。

I'm using CMake for a project and googletest for my test cases. Looking around the internet, it seems to be common practise to just copy the googletest source into a subfolder of your repository and include it with "add_subdirectory(googletest)". I did that.

现在我正在使用CPack为我的项目生成debian软件包。不幸的是，由CPack生成的软件包与我的项目一起安装了googletest。当然，这不是我想要的。

Now I'm using CPack to generate debian packages for my project. Unfortunately, the packages generated by CPack install googletest alongside with my project. This is of course not what I want.

在googletest目录中，我发现了一些INSTALL cmake命令，因此很清楚为什么会发生。现在的问题是-我该如何避免呢？我不喜欢从googletest修改CMakeLists.txt文件，因为我必须记住在更新时重新应用所做的修改。还有其他方法可以在CPack中禁用这些安装吗？

Looking in the googletest directory, I found some INSTALL cmake commands there, so it is clear, why it happens. The question is now - how can I avoid it? I don't like modifying the CMakeLists.txt files from googletest, because I would have to remember re-applying my modifications on an update. Is there another way to disable these installs in CPack?

推荐答案

如果您不需要在项目的发行版中进行测试（要与CPack一起交付），然后有条件地包含 googletest 子目录，并在打包时将条件设置为false：

If you don't need tests in your project's release (which you want to deliver with CPack), then include googletest subdirectory conditionally, and set conditional to false when packaging:

...
if(NOT DISABLE_TESTS)
    add_subdirectory(googletest)
endif()

包装

cmake -DDISABLE_TESTS=ON <source-dir>
cpack

或者，如果您要测试，但不想安装测试基础结构，您可以通过定义具有相同名称的宏或函数来禁用 install 命令：

Alternatively, if you want tests, but don't want to install testing infrastructure, you may disable install command via defining macro or function with same name:

# Replace install() to do-nothing macro.
macro(install)
endmacro()
# Include subproject (or any other CMake code) with "disabled" install().
add_subdirectory(googletest)
# Restore original install() behavior.
macro(install)
    _install(${ARGN})
endmacro()

CMake邮件。

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