CHECK_FUNCTION_EXISTS_EX(timeradd EVENT__HAVE_TIMERADD)
CHECK_FUNCTION_EXISTS_EX(timerclear EVENT__HAVE_TIMERCLEAR)
CHECK_FUNCTION_EXISTS_EX(timercmp EVENT__HAVE_TIMERCMP)
-CHECK_FUNCTION_EXISTS_EX(timerfd_create HAVE_TIMERFD_CREATE)
+CHECK_FUNCTION_EXISTS_EX(timerfd_create EVENT__HAVE_TIMERFD_CREATE)
CHECK_FUNCTION_EXISTS_EX(timerisset EVENT__HAVE_TIMERISSET)
CHECK_FUNCTION_EXISTS_EX(putenv EVENT__HAVE_PUTENV)
CHECK_FUNCTION_EXISTS_EX(setenv EVENT__HAVE_SETENV)