diff -ruN Time-Monotonic-v0.9.8.orig/monotonic_clock/src/monotonic_common.c Time-Monotonic-v0.9.8/monotonic_clock/src/monotonic_common.c
--- Time-Monotonic-v0.9.8.orig/monotonic_clock/src/monotonic_common.c	2015-06-25 10:12:05.000000000 +0200
+++ Time-Monotonic-v0.9.8/monotonic_clock/src/monotonic_common.c	2024-05-29 12:19:26.581286483 +0200
@@ -10,6 +10,7 @@
 #include<stdio.h>
 #include<string.h>
 #include<errno.h>
+#include<time.h>
 #include<sys/time.h>
 
 #include"monotonic_clock.h"