diff -up gt-0.4/src/playmidi.c~ gt-0.4/src/playmidi.c
--- gt-0.4/src/playmidi.c~	2004-11-18 21:36:17.000000000 +0100
+++ gt-0.4/src/playmidi.c	2020-03-06 23:23:58.056972233 +0100
@@ -3140,7 +3140,6 @@ static int xmp_epoch = -1;
 static unsigned xxmp_epoch = 0;
 static unsigned time_expired = 0;
 static unsigned last_time_expired = 0;
-extern int gettimeofday (struct timeval *, struct timezone *);
 static struct timeval tv;
 static struct timezone tz;
 static void