bug#32194: [PATCH] Use Gnulib regex for lib-src

[Paul Eggert]

Noam Postavsky wrote:

> I just tried again now, and it still compiles, but it does print a whole
> bunch of warnings.  I seem to recall seeing you normally build with
> -Werror, so maybe that's why it failed for you?

Most likely. Also, putting -DDEBUG in CFLAGS turns on some other unrelated 
debugging elsewhere. It's a bit of a mess.