现在讲述如何写makefile的文章比较少，这是我想写这篇文章的原因。当然，不同产商的make各不相同，也有不同的语法，但其本质都是在“文件依赖性”上做文章，这里，我仅对GNU的make进行讲述，我的环境是RedHat Linux 8.0，make的版本是3.80。-Now on how to write fewer articles makefile, this is my reason to write this article. Of course, different manufacturers make the different, have different syntax, but its essence is in the " document-dependent"　on the fuss, here, I only carried out on GNU' s make, my environment is RedHat Linux 8.0, make version is 3.80.