--- Makefile.in.LN_S	2013-02-03 09:35:36 +0900
+++ Makefile.in	2013-02-03 09:51:33 +0900
@@ -723,6 +723,7 @@ BASE_FLAGS_TO_PASS = \
 	"target_alias=$(target_alias)" \
 	"AWK=$(AWK)" \
 	"BISON=$(BISON)" \
+	"LN_S=$(LN_S)" \
 	"CC_FOR_BUILD=$(CC_FOR_BUILD)" \
 	"CFLAGS_FOR_BUILD=$(CFLAGS_FOR_BUILD)" \
 	"CXX_FOR_BUILD=$(CXX_FOR_BUILD)" \