1 files changed, 7 insertions, 0 deletions

diff --git a/defines.h b/defines.h
index 0420a7e8e..f1662edcf 100644
--- a/defines.h
+++ b/defines.h
@@ -519,6 +519,13 @@ struct winsize {
 }
 #endif
 
+#ifndef timespeccmp
+#define timespeccmp(tsp, usp, cmp)                                      \
+        (((tsp)->tv_sec == (usp)->tv_sec) ?                             \
+            ((tsp)->tv_nsec cmp (usp)->tv_nsec) :                       \
+            ((tsp)->tv_sec cmp (usp)->tv_sec))
+#endif
+
 #ifndef __P
 # define __P(x) x
 #endif