how to auto generate javascript binding files for C functions?

I found that it is said there is a ‘functions’ setting in .ini file for bindings-generator tool at this side: https://github.com/cocos2d/bindings-generator.
but I check the python code that it does not support ‘functions’ argument.
Now I can only generate jsb files for class with bindings_generator.
And I wondered how to auto generator jsb files for C functions?
Is there any one knows about it? I don’t want to write it by hand, there are too many codes.

Hi, Is it resolved?