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