On 12 November 2015 at 17:03, Jonathan Wakely wrote: > On 12 November 2015 at 16:38, Tim Prince wrote: >> I see that the current trunk chooses to configure so as to depend on a >> compatible nanosleep() regardless of the ability of the target system to >> support that (e.g. cygwin64). I haven't been able to see whether there >> is a configure option or a prerequisites download installation to take >> care of it. > > We've been using nanosleep there pretty much unchanged for about three years. For the configure check see GLIBCXX_ENABLE_LIBSTDCXX_TIME which tests for nanosleep, and falls back to usleep or sleep.