使用 custom_target 创建的 cmake 目标失败答案

【问题标题】：cmake target created with custom_target fails使用 custom_target 创建的 cmake 目标失败
【发布时间】：2018-03-11 14:02:49
【问题描述】：

我正在尝试将自定义目标添加到我的 Cmake 项目中，它将从 .elf 输出 .hex 文件。这是我使用的一段脚本：

....
set(EXECUTABLE_OUTPUT_PATH "${PROJECT_SOURCE_DIR}/${CMAKE_BUILD_TYPE}")
....
target_link_libraries(${CMAKE_PROJECT_NAME}.elf)
set(COMD "${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/${CMAKE_PROJECT_NAME}.elf ${EXECUTABLE_OUTPUT_PATH}/${CMAKE_PROJECT_NAME}.hex")
add_custom_target(${CMAKE_PROJECT_NAME}.hex DEPENDS ${CMAKE_PROJECT_NAME}.elf COMMAND ${COMD})

建筑最终是这样的：

-- Configuring done
-- Generating done
-- Build files have been written to: /home/captain/test
[100%] Built target test.elf
/bin/sh: 1: arm-none-eabi-objcopy -Oihex /home/captain/test/Release/test.elf /home/captain/test/Release/test.hex: not found
.... blah blah blah ...

直接运行：

arm-none-eabi-objcopy -Oihex /home/captain/test/Release/test.elf /home/captain/test/Release/test.hex

按预期工作。怎么可能？

【问题讨论】：

标签： cmake objcopy

【解决方案1】：

问题是你把命令包装在":

set(COMD "${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/${CMAKE_PROJECT_NAME}.elf ${EXECUTABLE_OUTPUT_PATH}/${CMAKE_PROJECT_NAME}.hex")

删除周围的"，它应该可以按预期工作：

set(COMD ${CMAKE_OBJCOPY} -Oihex ${EXECUTABLE_OUTPUT_PATH}/${CMAKE_PROJECT_NAME}.elf ${EXECUTABLE_OUTPUT_PATH}/${CMAKE_PROJECT_NAME}.hex)

【讨论】：