1、gcc -I -L -l区别
https://www.cnblogs.com/alan666/p/8311984.html
2、Makefile中:=, =, ?=和+=的含义
https://blog.csdn.net/b876144622/article/details/80372161
3、 Makefile 速查笔记
https://segmentfault.com/a/1190000012091117
4、Makefile教程
https://blog.csdn.net/weixin_38391755/article/details/80380786