[Bug libstdc++/54847] --enable-libstdcxx-time=yes non-functional on darwin

[jeremyhu at macports dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54847

--- Comment #14 from Jeremy Huddleston Sequoia <jeremyhu at macports dot org> 2012-10-07 22:49:50 UTC ---
Your patch looks wrong to me.  You should just get rid of the '#if
_POSIX_TIMERS > 0' check and always use 'struct timespec' :

http://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_nanosleep.html

If there are some platforms which don't conform and need 'timespec' instead of
'struct timespec', then you can certainly work around those on a case by case
basis, but the _POSIX_TIMERS conditional has no reason to be there as far as I
can tell...

You should also do something similar for the clock_gettime and sched_yield
checks.