CMake:如何为可执行文件添加对链接器脚本的依赖 [英] CMake: How to add dependency on linker script for executable

问题描述

我有一个 CMake 脚本，其中最终的可执行文件与我自己的链接器脚本链接:

I have a CMake script where the final executable is linked with my own linker script:

cmake_minimum_required(VERSION 3.1)

project(test_app)

set(LINKER_SCRIPT "linker.ld")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -T ${LINKER_SCRIPT}")

add_executable(${PROJECT_NAME}.elf
    main.cpp
    startup.cpp
)

如何使可执行文件也依赖于链接器脚本文件(如果 linker.ld 被更改，则触发链接)?

How do I make an executable dependent also on the linker script file (trigger linking if linker.ld was changed)?

推荐答案

您可以添加 LINK_DEPENDS 属性到您的可执行目标，使用 set_target_properties.在 add_executable 命令后添加以下行:

You can add a LINK_DEPENDS property to your executable target, using set_target_properties. Add the following line after your add_executable command:

set_target_properties(${TARGET_NAME} PROPERTIES LINK_DEPENDS ${LINKER_SCRIPT})

set_target_properties 的第一个参数是目标名称，即您传递给 add_executable 的第一个参数.

The first argument to set_target_properties is the target name, i.e. the first argument you passed to add_executable.

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