什么是makefile？或许很多Winodws的程序员都不知道这个东西，因为那些Windows 的IDE 都为你做了这个工作，但我觉得要作一个好的和professional 的程序员， makefile还是要懂。这就好像现在有这么多的HTML的编辑器，但如果你想成为一个专 业人士，你还是要了解HTML的标识的含义。-What is a makefile? Maybe a lot of Winodws programmers do not know this thing, because the Windows of the IDE are you doing this job, but I think to make a good and professional programmer, makefile or to understand. It' s like there are so many HTML editors, but if you want to be a professional, you still have to understand the meaning of the identity of HTML.