linux编程时候用到的一些GCC选项，很有用-linux programming when used in some GCC option is useful

Linux 环境下的GCC编程，让您了解嵌入式底层驱动开发、编译等过程！-GCC programming under Linux environment, let you understand embedded the underlying driver development, such as compilation process!

实现了xv6系统上的声音驱动编程。在linux gcc下可以编译通过。-To achieve the sound on your system drive xv6 programming. Under linux gcc can compile.