http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54847
--- Comment #10 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-10-07 19:43:25 UTC --- (In reply to comment #9) > > I can certainly participate. I just need to make sure that I don't read any > code snippets that are GPL3 licensed. > Well it is absurd to read bugzilla and not expect to run across GPLv3 code fragments. In any case, this minor change the configure test compiles and runs fine on x86_64-apple-darwin11... #include <unistd.h> #include <time.h> int main () { #if _POSIX_TIMERS > 0 timespec tp; #else struct timespec tp; #endif nanosleep(&tp, 0); ; return 0; } ISo the question is whether the header fragment needs any adjustment once the configure passes the check for nanosleep() support. I'll test locally. Paolo, are there any specific libstdc++-v3 test cases that I should look at once libstc++-v3 is using nanosleep() to check for proper function?