$NetBSD: patch-ab,v 1.3 2016/08/24 10:01:21 wiz Exp $

getopt.h is non-standard.
https://gitlab.com/ppentchev/id3/issues/1

--- id3.c.orig	2016-08-13 22:39:26.000000000 +0000
+++ id3.c
@@ -18,7 +18,6 @@
 #include <ctype.h>
 #include <err.h>
 #include <errno.h>
-#include <getopt.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>