buildroot用处：
https://www.cnblogs.com/arnoldlu/p/9689585.html
https://buildroot.org/
https://www.cnblogs.com/arnoldlu/p/9553995.html
https://blog.csdn.net/xixihaha331/article/details/62418849
buildroot 学习
原文：https://www.cnblogs.com/rivsidn/p/10845789.html
