Edit File: autoconf-timerfd.c
// We'd like to use the existence of __NR_timerfd_create to know it is // safe to include timerfd.h, but RHEL5 x86_64 (2.6.18-398.el5) has // __NR_timerfd_create but no timerfd.h. So, we have to test it. #include <linux/timerfd.h>