--- old/src/java.desktop/share/native/libawt/awt/image/dither.c	2018-03-28 12:27:54.306048991 +0200
+++ new/src/java.desktop/share/native/libawt/awt/image/dither.c	2018-03-28 12:27:54.058048993 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -23,14 +23,16 @@
  * questions.
  */
 
+#include "jni.h"
 #include "dither.h"
 
-sgn_ordered_dither_array std_img_oda_red;
-sgn_ordered_dither_array std_img_oda_green;
-sgn_ordered_dither_array std_img_oda_blue;
-int std_odas_computed = 0;
+JNIEXPORT sgn_ordered_dither_array std_img_oda_red;
+JNIEXPORT sgn_ordered_dither_array std_img_oda_green;
+JNIEXPORT sgn_ordered_dither_array std_img_oda_blue;
+JNIEXPORT int std_odas_computed = 0;
 
-void initInverseGrayLut(int* prgb, int rgbsize, ColorData *cData) {
+JNIEXPORT void JNICALL
+initInverseGrayLut(int* prgb, int rgbsize, ColorData *cData) {
     int *inverse;
     int lastindex, lastgray, missing, i;
 
@@ -267,7 +269,8 @@
 
 }
 
-void make_dither_arrays(int cmapsize, ColorData *cData) {
+JNIEXPORT void JNICALL
+make_dither_arrays(int cmapsize, ColorData *cData) {
     int i, j, k;
 
     /*