diff -r 1cca90ce0481 -r b7317d2fe0e9 kconfig/symbol.c
--- a/kconfig/symbol.c	Fri Oct 17 12:47:53 2008 +0000
+++ b/kconfig/symbol.c	Tue Jul 12 23:52:24 2011 +0200
@@ -976,6 +976,4 @@
 	p = getenv(env);
 	if (p)
 		sym_add_default(sym, p);
-	else
-		menu_warn(current_entry, "environment variable %s undefined", env);
 }