Hmm... this was fixed long ago with:
diff -Naru a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
--- a/scripts/kconfig/mconf.c 2005-11-01 01:31:51 -08:00
+++ b/scripts/kconfig/mconf.c 2005-11-01 01:31:51 -08:00
@@ -88,7 +88,7 @@
static int indent;
static struct termios ios_org;
static int rows = 0, cols = 0;
-static struct menu *current_menu;
+struct menu *current_menu;
static int child_count;
static int do_resize;
static int single_menu_mode;
Can you check please, that you have this patch applied?
Also, I wonder what version of stable kernel do you try to build?