Re: [Question]:Question about bison adding GPL copyright to the parser files generated by bison and yacc.c

[Christian Schoenebeck]

On Dienstag, 22. Januar 2019 00:24:50 CET bird bravo wrote:
> Dear bison maintainer:

If you want an official response you might rather ask on the developers list. I 
am just a Bison user like you.

>     I noticed that when I use bison and the parser skeleton(yacc.c) to
> generate a parser file... there will be a copyright notice to claim the
> file is a GPLV3 and an exception declaration... I wanna know is that OK to
> use and distribute the parser file as I wish..

It depends on what your generated parser is capable to do. That's the point of 
the exception. It's an either or:

If your generated parser is *not* capable to generate yet another parser, then 
yes, you could distribute the generated file under any license you wish and 
hence you could do anything with it.

However if your generated parser is *capable* to generate another parser then 
no, in that case the GPL automatically applies to your generated parser file as 
well. Note that the pure potential of your generated parser to be capable of 
generating another parser would be sufficient for the GPL to apply!

Best regards,
Christian Schoenebeck