用CMake制作完后如何将目录内容复制到构建目录中？ [英] How to copy contents of a directory into build directory after make with CMake?

问题描述

我在源文件旁边的 config 目录中有一些配置文件（xml，ini，...）。每次创建项目时，如何将config目录中的所有文件复制到build目录中（可执行文件旁边）？

I've got some config files (xml, ini, ...) in the config directory next to the source files. How can I copy all the files in the config directory into the build directory (next to the executable file) each time I make the project?

推荐答案

您可以使用 add_custom_command 。

You can use add_custom_command.

假设您的目标称为 MyTarget ，那么您可以这样做：

Say your target is called MyTarget, then you can do this:

add_custom_command(TARGET MyTarget PRE_BUILD
                   COMMAND ${CMAKE_COMMAND} -E copy_directory
                       ${CMAKE_SOURCE_DIR}/config/ $<TARGET_FILE_DIR:MyTarget>)

此操作在您每次构建 MyTarget 并将 / config的内容复制到目标exe / lib将以其结尾的目录中。

This executes every time you build MyTarget and copies the contents of "/config" into the directory where the target exe/lib will end up.

正如马克·拉卡塔在下面的评论中指出的那样，替换了 PRE_BUILD 在 add_custom_command 中使用 POST_BUILD 可以确保仅在构建成功后才进行复制。

As Mark Lakata points out in a comment below, replacing PRE_BUILD with POST_BUILD in the add_custom_command ensures that copying will only happen if the build succeeds.

• $ {CMAKE_COMMAND} 是CMake的路径


• -E 使CMake运行命令而不是构建


• copy_directory 是 命令行工具


• config 是目录（位于在项目根目录下）谁的内容将被复制到构建目标中


• $< TARGET_FILE_DIR：MyTarget> 是生成器表达式，在 add_custom_command 文档中进行了说明。

• ${CMAKE_COMMAND} is the path to CMake
• -E makes CMake run commands instead of building
• copy_directory is a Command-Line Tool
• config is the directory (that falls under the root of the project) who's contents will be copied into the build target
• $<TARGET_FILE_DIR:MyTarget> is a generator expression, described in the add_custom_command documentation.

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