_GLIBCPP_USE_WCHAR_T undefined in FreeBSD's c++config.h?

[Benjamin Kosnik]

>FreeBSD does not implement iconv family functions in the base system, it
>has a WCHAR_MIN/WCHAR_MAX constants defined in a wrong header and wcstof
>function is not committed yet. These three prevent libstdc++ configure
>from enabling wchar_t instantiations.

Thanks, this was very informative. It's great news that this is so close
to working on FreeBSD.

-benjamin