Fix:

error: implicitly declaring library function 'exit' with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-function-declaration]
error: call to undeclared function 'isatty'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
error: call to undeclared function 'ioctl'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
--- configure.orig	2005-07-14 17:50:59.000000000 -0500
+++ configure	2024-04-15 04:54:46.000000000 -0500
@@ -3894,6 +3894,7 @@
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <ctype.h>
+#include <stdlib.h>
 #if ((' ' & 0x0FF) == 0x020)
 # define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
 # define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
--- misc.c.orig	2004-01-03 15:17:28.000000000 -0600
+++ misc.c	2024-04-15 05:03:23.000000000 -0500
@@ -14,6 +14,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
 #include <vorbis/codec.h>
 #include "i18n.h"
 #include "misc.h"