[Bug libstdc++/64638] [5 Regression] Build failure with recent futex changes in libstdc++, likely all non-gthreads targets

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64638

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Jan 17 13:48:48 2015
New Revision: 219799

URL: https://gcc.gnu.org/viewcvs?rev=219799&root=gcc&view=rev
Log:
    PR libstdc++/64638
    * include/bits/atomic_futex.h: Use appropriate config macros for
    availability of std::mutex, std::condition and std::chrono.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/atomic_futex.h