是否有任何配置文件读/写C代码生成器？

I know how to generate a C scanner code with flex or bison, but unluckily, I need a C code to read && -write- configure file, but I can not generate such code with flex or bison, May be I can use configure file read/write library, but I think it's not flexible when I want custom the format of configure file, so any tips? I know how to generate a C scanner code with fl