如何将DLL文件复制到与可执行文件相同的文件夹使用CMake？ [英] How to copy DLL files into the same folder as the executable using CMake?

问题描述

我们使用CMake在我们的SVN中生成我们的源的Visual Studio文件。现在我的工具需要一些DLL文件在与可执行文件相同的文件夹。 DLL文件位于源文件夹中。

We use CMake for generating the Visual Studio files of our sources in our SVN. Now my tool requires some DLL files to be in the same folder as the executable. The DLL files are in a folder alongside the source.

如何更改我的 CMakeLists.txt 生成的Visual Studio项目将已经在发布/调试文件夹中的特定DLL文件，或者将在编译时复制它们。

How can I change my CMakeLists.txt such that the generated Visual Studio project will either have already the particular DLL files in the release/debug folders or will copy them upon compilation?

推荐答案

我将使用 add_custom_command 与 cmake -E copy_if_different ... 一起实现。完整信息run

I'd use add_custom_command to achieve this along with cmake -E copy_if_different.... For full info run

cmake --help-command add_custom_command
cmake -E

所以在你的情况下，如果你有以下目录结构：

So in your case, if you have the following directory structure:

/CMakeLists.txt
/src
/libs/test.dll

并且您的命令应用的CMake目标是 MyTest ，然后您可以添加以下到您的CMakeLists.txt：

and your CMake target to which the command applies is MyTest, then you could add the following to your CMakeLists.txt:

add_custom_command(TARGET MyTest POST_BUILD        # Adds a post-build event to MyTest
    COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
        "${PROJECT_SOURCE_DIR}/libs/test.dll"      # <--this is in-file
        $<TARGET_FILE_DIR:MyTest>)                 # <--this is out-file path

如果您只希望复制 / libs / 目录的全部内容，使用 cmake -E copy_directory ：

If you just want the entire contents of the /libs/ directory copied, use cmake -E copy_directory:

add_custom_command(TARGET MyTest POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
        "${PROJECT_SOURCE_DIR}/libs"
        $<TARGET_FILE_DIR:MyTest>)

如果您需要根据配置复制不同的dll（发布，那么您可以在具有相应配置的命名的子目录中使用这些子目录： / libs / Release 和 / libs / Debug 。然后，您需要将配置类型注入到 add_custom_command 调用中的dll路径，如下所示：

If you need to copy different dlls depending upon the configuration (Release, Debug, eg) then you could have these in subdirectories named with the corresponding configuration: /libs/Release, and /libs/Debug. You then need to inject the configuration type into the path to the dll in the add_custom_command call, like this:

add_custom_command(TARGET MyTest POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
        "${PROJECT_SOURCE_DIR}/libs/$<CONFIGURATION>"
        $<TARGET_FILE_DIR:MyTest>)

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