如何在OSX上构建（不安装）的cmake中的可执行文件中添加rpath？ [英] How do you add an rpath to an executable in cmake on build (not install) on OSX?

问题描述

所以，如果你已经有一个二进制文件，你可以使用'install_name_tool'在OSX上添加一个rpath，如下：

So, if you already have a binary, you can add an rpath to it on OSX using the 'install_name_tool', as so:

install_name_tool -add_rpath @executable_path/blah

xcode会在您建立应用程序包。

xcode does this automatically when you're building an application bundle.

我知道在cmake中你可以使用它来设置共享库的install_name：

I know that in cmake you can use this to set the install_name of the shared library:

set_target_properties(nshared PROPERTIES BUILD_WITH_INSTALL_RPATH 1 INSTALL_NAME_DIR "@rpath")

My question is, what's the equivalent of this to add an rpath to a binary?

（为什么会这样？）我的问题是， 在你们中间，查看你的应用程序/文件夹中的任何应用程序的otool -l，你会看到许多应用程序，如下：

(for the 'why would you do that?' amongst you, go look at the otool -l on any of the apps in your Applications/ folder and you'll see plenty of apps with entries like:

Load command 15
          cmd LC_RPATH
      cmdsize 36
         path @executable_path/../../Frameworks/

这是标准做法。我只是想在cmake中做）

This is standard practice. I'm just trying to do it in cmake)

推荐答案

您可以使用 POST_BUILD命令添加 LC_RPATH 加载命令到构建的可执行文件：

You can use a POST_BUILD command to add an LC_RPATH load command to the built executable:

add_custom_command(TARGET executable 
    POST_BUILD COMMAND 
    ${CMAKE_INSTALL_NAME_TOOL} -add_rpath "@executable_path/../../Frameworks/"
    $<TARGET_FILE:executable>)

变量 CMAKE_INSTALL_NAME_TOOL 包含在Darwin下的 install_name_tool 可执行文件的路径。

The variable CMAKE_INSTALL_NAME_TOOL contains the path to the install_name_tool executable under Darwin.

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