--- a/src/globals.h
+++ b/src/globals.h
@@ -488,6 +488,7 @@ EXTERN win_T	*prevwin INIT(= NULL);	/* p
 # define W_NEXT(wp) NULL
 # define FOR_ALL_WINDOWS(wp) wp = curwin;
 #endif
+
 EXTERN win_T	*curwin;	/* currently active window */
 
 /*
@@ -496,6 +497,15 @@ EXTERN win_T	*curwin;	/* currently activ
  */
 EXTERN frame_T	*topframe;	/* top of the window frame tree */
 
+#ifdef FEAT_WINDOWS
+/*
+ * Tab pages are nothing more than alternative topframes.  "first_tabpage"
+ * points to the first one in the list, "topframe" is the current one.
+ */
+EXTERN tabpage_T *first_tabpage;
+EXTERN int	  redraw_tabpage INIT(= FALSE);	/* redraw tab pages line */
+#endif
+
 /*
  * All buffers are linked in a list. 'firstbuf' points to the first entry,
  * 'lastbuf' to the last entry and 'curbuf' to the currently active buffer.