On Wed, Mar 22, 2017 at 5:02 PM, Vinson Lee <vlee at freedesktop.org> wrote: > I don't think this is a CentOS 6 specific issue but an issue with > older GCC, such as GCC 4.4. glibc 2.17 and newer have clock_gettime in libc, and 2.16 and older have it in librt.