Re: AC_FLAGS_WARN_ALL changes proposed for inclusion in next autoconf release

[Paul Eggert]

David A. Wheeler wrote:
> Dale's code is derived from previous FSF code, so I think all the copyright 
> issues are addressed.

That would be true only if Dale's changes, taken as a whole, are 
trivial; our rule of thumb for that is about 10 lines of reasonably 
obvious changes.

Also, as I understand it, other people contributed.

I haven't looked into the details, though.