check_function_exists(mkfifo       HAVE_MKFIFO)
check_include_file(unistd.h        HAVE_UNISTD_H)
check_include_file(sys/time.h      HAVE_SYS_TIME_H)
check_include_file(sys/timeb.h     HAVE_SYS_TIMEB_H)
check_include_file(windows.h       HAVE_WINDOWS_H)
check_function_exists(timegm       HAVE_TIMEGM)
check_variable_exists(daylight     HAVE_DAYLIGHT)
check_function_exists(ftime        HAVE_FTIME)
check_function_exists(gettimeofday HAVE_GETTIMEOFDAY)