Lex & yacc & bison & flex configuration problems

About yacc and lex Configuration of , I chose bison and flex .
About unxutils Refer to the following article for the configuration of ：
The first part is explained yacc、bison、lex、flex Some common ground of , Then give the solution .
https://blog.csdn.net/bedusing/article/details/5409495
The second can be regarded as a supplement to the first , If there is any error in configuration , Basically, it can be solved by referring to the second article .
https://www.freesion.com/article/5374631329/