Fix implicit declaration of functions.
--- configure.orig	2002-06-07 04:54:43.000000000 -0500
+++ configure	2021-11-24 10:47:14.000000000 -0600
@@ -3033,6 +3033,7 @@
 #line $LINENO "configure"
 #include "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))
--- src/ftpmap.h.orig	2002-06-07 05:20:36.000000000 -0500
+++ src/ftpmap.h	2021-11-24 10:48:26.000000000 -0600
@@ -1,6 +1,7 @@
 /* (C)opyleft 2001-2002 by Jedi/Sector One <j@4u.net> */
 
 #include <stdio.h>
+#include <time.h>
 #ifdef STDC_HEADERS
 # include <stdlib.h>
 # include <stddef.h>