--- a/jdk/make/lib/Lib-java.prefs.gmk	Fri Apr 17 16:50:16 2015 +0900
+++ b/jdk/make/lib/Lib-java.prefs.gmk	Fri Apr 17 13:55:42 2015 +0200
@@ -37,7 +37,6 @@
     LIBRARY := prefs, \
     OUTPUT_DIR := $(INSTALL_LIBRARIES_HERE), \
     SRC := $(LIBPREF_SRC_DIRS), \
-    LANG := C, \
     OPTIMIZATION := HIGH, \
     CFLAGS := $(CFLAGS_JDKLIB) $(addprefix -I, $(LIBPREF_SRC_DIRS)) \
         $(LIBJAVA_HEADER_FLAGS), \