如何使用cmake在源代码中生成标题？

cmake_minimum_required(VERSION 3.10)
project(title_generator)

set(CMAKE_CXX_STANDARD 11)

add_executable(title_generator main.cpp)

add_custom_command(
    OUTPUT title.h
    COMMAND ${CMAKE_SOURCE_DIR}/generate_title.sh ${CMAKE_SOURCE_DIR}/title.txt ${CMAKE_BINARY_DIR}/title.h
    DEPENDS generate_title.sh
)

add_custom_target(
    generate_title
    DEPENDS title.h
)

add_dependencies(title_generator generate_title)

#include<iostream>
#include "title.h"

int main() {
    std::cout << TITLE<< std::endl;
    return 0;
}

#!/bin/bash

input_file=$1
output_file=$2

title=$(cat $input_file)

echo "#define TITLE \"$title\"" > $output_file