diff -Naur build-i686/native/shadow-4.14.2.copy/lib/user_busy.c src/shadow-4.14.2/lib/user_busy.c
--- shadow-4.14.2.copy/lib/user_busy.c	2023-11-27 23:37:31.067406127 -0500
+++ shadow-4.14.2/lib/user_busy.c	2023-11-27 23:37:08.507284180 -0500
@@ -17,6 +17,7 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <utmp.h>
 #include "defines.h"
 #include "prototypes.h"
 #ifdef ENABLE_SUBIDS