gtj writes in http://bugs.uclibc.org/view.php?id=55

The version of mconf used by buildroot doesn't handle "menuconfig" correctly.
Instead of displaying the proper submenu, it just displays the menuconfig
option itself again.

This patch adds the proper code to mconf. Only 6 lines of code.

package/config/mconf.c

@@ -308,6 +308,12 @@ static void build_conf(struct menu *menu)
 			return;
 		}
 	} else {
+                if (menu == current_menu) {
+                        cprint_tag(":%p", menu);
+                        cprint_name("---%*c%s", indent + 1, ' ', menu_get_prompt(menu));
+                        goto conf_childs;
+                }
+
 		child_count++;
 		val = sym_get_tristate_value(sym);
 		if (sym_is_choice_value(sym) && val == yes) {