http://www.mail-archive.com/freewrt-developers@freewrt.org/msg01326.html
--- ncurses-5.6.orig/ncurses/curses.priv.h     2006-12-10 01:55:14.000000000 0100
+++ ncurses-5.6/ncurses/curses.priv.h  2008-02-11 13:12:04.000000000 +0100
@@ -253,6 +253,10 @@ color_t;
 #include <term_entry.h>
 #include <nc_tparm.h>

+#ifndef _WINT_T
+#include <wchar.h>
+#endif
+
 #if NCURSES_EXT_COLORS && USE_WIDEC_SUPPORT
 #define if_EXT_COLORS(stmt)   stmt
 #define NetPair(value,p)      (value).ext_color = (p), \