--- synfig-0.61.09.orig/src/synfig/time.cpp
+++ synfig-0.61.09/src/synfig/time.cpp
@@ -37,6 +37,7 @@
 #include <ETL/misc>
 #include "general.h"
 #include <cmath>
+#include <cstdio>
 #include <cassert>
 #include <algorithm>
 #include <ctype.h>