如何禁用gcc警告“cc1：warning：命令行选项'-std = c ++ 11'对C ++ / ObjC ++有效，但对C无效[默认启用]”

I am new to cmake and gcc. The first assignment in my new role in the company was to clean the errors from our linux compilation I did most of it, and now the only warning I see is I am new to cmake and gcc. The first assignment