*** ./utils/lstopo/lstopo.c.ORIG	Mon Jan 14 15:47:42 2019
--- ./utils/lstopo/lstopo.c	Mon Jan 14 15:48:33 2019
***************
*** 558,563 ****
--- 558,567 ----
  
  #define LSTOPO_VERBOSE_MODE_DEFAULT 1
  
+ #if defined(_AIX) && !defined(_AIX53)
+ #define CLOCK_MONOTONIC          10LL                   /* 1003.4 */
+ #endif
+ 
  int
  main (int argc, char *argv[])
  {