http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58669
--- Comment #3 from Folkert van Heusden <folkert at vanheusden dot com> --- Did some googling and with appropriate #ifdefs it should be at least on linux possible to retrieve this value: sysconf(_SC_NPROCESSORS_ONLN); If that function can't figure it out, it will return '1' which is somewhat sensible. On http://stackoverflow.com/questions/150355/programmatically-find-the-number-of-cores-on-a-machine I found a whole list of implementations for windows, *bsd, macos, aix, well I think all relevant platforms. Also http://stackoverflow.com/questions/4586405/get-number-of-cpus-in-linux-using-c gives some ideas. If there's any further help I can do; let me know.
