Oleg Bartunov <oleg@sai.msu.su> writes:
> you can specify any option begins from --with-
> configure will not complain about unknown option, just silently ignore it.
This has always been true with every version of autoconf --- it's one of
the less well designed aspects of autoconf IMHO. The GNU folk claim
it's a feature, but I don't think so... (*)
regards, tom lane
(*) their reasoning is that you can pass the same set of --with flags
to every configure script in a large source tree without worrying about
exactly which packages want which options. Perhaps that really is
useful for building a ton of GNU tools together, but it sure hurts
user-friendliness otherwise.