ifdef my way around OS X's lack of clock_gettime(). This fix isn't ideal if you really care about the real-time clock, but here it's just used for printing.
ifdef my way around OS X's lack of clock_gettime().
This fix isn't ideal if you really care about the real-time clock, but here
it's just used for printing.

osrf/ros_dds,osrf/ros_dds,osrf/ros_dds,osrf/ros_dds,osrf/ros_dds,osrf/ros_dds