说明：  在这篇文档中，将以C/C++的源码作为我们基础，所以必然涉及一些关于C/C++的编译的知识，相关于这方面的内容，还请各位查看相关的编译器的文档。这里所默认的编译器是UNIX下的GCC和CC。
(In this document, we will take the source code of C / C + + as our foundation, so it must involve some knowledge about C / C + + compilation. For this aspect, please check the relevant compiler documents. The default compiler here is GCC and CC under UNIX.)