--- xxgdb/calldbx.c.ewt	Thu Aug 29 15:39:07 1996
+++ xxgdb/calldbx.c	Thu Aug 29 15:39:31 1996
@@ -76,6 +76,7 @@
 #include "global.h"
 #if !(defined(OLDSUNOS) || defined(BSD))
 #include <termio.h>
+#include <sys/ioctl.h>
 #else
 #include <sgtty.h>
 #endif