--- a/jdk/make/lib/NioLibraries.gmk	Tue Apr 12 00:43:57 2016 -0700
+++ b/jdk/make/lib/NioLibraries.gmk	Wed Apr 13 11:13:15 2016 +0200
@@ -70,6 +70,7 @@
     SRC := $(BUILD_LIBNIO_SRC), \
     EXCLUDE_FILES := $(BUILD_LIBNIO_EXFILES), \
     OPTIMIZATION := HIGH, \
+    WARNINGS_AS_ERRORS_xlc := false, \
     CFLAGS := $(CFLAGS_JDKLIB) \
         $(BUILD_LIBNIO_CFLAGS), \
     MAPFILE := $(BUILD_LIBNIO_MAPFILE), \