[Bug libstdc++/57421] Error when linking static libstc++ due to missing future classes

[juergen.reuter at desy dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57421

--- Comment #7 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Ok, true, now I got it. But now it really looks like a problem of the library,
and not our linking procedure. About this I was not totally sure before.