dnl check for various functions...
-AC_CHECK_FUNCS([snprintf vsnprintf socketpair gettimeofday writev sendmsg gmtime_r strtok_r usleep posix_spawn strlcpy strlcat strnlen fstat signalfd select poll kevent port_create epoll_ctl arc4random getrusage timerfd_create])
+AC_CHECK_FUNCS([snprintf vsnprintf socketpair gettimeofday writev sendmsg gmtime_r strtok_r usleep posix_spawn getexecname strlcpy strlcat strnlen fstat signalfd select poll kevent port_create epoll_ctl arc4random getrusage timerfd_create])
+AC_SEARCH_LIBS(dlinfo, dl, AC_DEFINE(HAVE_DLINFO, 1, [Define if you have dlinfo]))
AC_SEARCH_LIBS(nanosleep, rt posix4, AC_DEFINE(HAVE_NANOSLEEP, 1, [Define if you have nanosleep]))
AC_SEARCH_LIBS(timer_create, rt, AC_DEFINE(HAVE_TIMER_CREATE, 1, [Define if you have timer_create]))
RB_CHECK_TIMER_CREATE