不解？stm32h743-nucleo 的bsp中的main函数是个空函数》。

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2009-01-05     Bernard      the first version
 * 2014-04-27     Bernard      make code cleanup.
 * 2017-08-25     LongfeiMa    transplantation for stm32h7xx
 */
#include <stdio.h>
int main(void)
{
    return 0;
}