--- old/src/java.desktop/unix/native/libawt_xawt/awt/multi_font.c	2018-09-30 07:52:58.979000000 +0530
+++ new/src/java.desktop/unix/native/libawt_xawt/awt/multi_font.c	2018-09-30 07:52:58.711000000 +0530
@@ -183,6 +183,7 @@
     return JNI_TRUE;
 }
 
+#define FONT_DEBUG 0 //explicitly define to avoid warning.
 /* #define FONT_DEBUG 2 */
 
 XFontSet