编译说明
- 下载Risc-v编译工具链: “cd sophpi-huashan; ./download_host-tools.sh”;
- 解压工具链tar包，“tar -xvf host-tools.tar.gz” ;
- 参考 https://github.com/sophgo/sophpi-huashan/wiki/1.%E8%BD%AF%E4%BB%B6%E5%AE%89%E8%A3%85%E5%8F%8A%E7%BC%96%E8%AF%91%E7%8E%AF%E5%A2%83%E6%90%AD%E5%BB%BA