CMake add_custom_command 未运行 [英] CMake add_custom_command not being run

问题描述

我正在尝试使用 add_custom_command在构建过程中生成一个文件.该命令似乎从未运行过，所以我制作了这个测试文件.

I'm trying to use add_custom_command to generate a file during the build. The command never seemed to be run, so I made this test file.

cmake_minimum_required( VERSION 2.6 )

add_custom_command(
  OUTPUT hello.txt
  COMMAND touch hello.txt
  DEPENDS hello.txt
)

我试过跑步:

cmake .  
make

并且 hello.txt 没有生成.我做错了什么?

And hello.txt was not generated. What have I done wrong?

推荐答案

添加以下内容:

add_custom_target(run ALL
    DEPENDS hello.txt)

如果您熟悉 makefile，这意味着:

If you're familiar with makefiles, this means:

all: run
run: hello.txt

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