src/java.desktop/unix/native/libawt_xawt/awt/wsutils.h

*** 1,7 ****
  /*
!  * Copyright (c) 1999, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 1999, 2020, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 68,77 ****
--- 68,81 ----
   * This file contains various typedef's, macros and procedure declarations for
   * a set of example utility procedures contained in the file "wsutils.c".
   *
   ******************************************************************************/
  
+ #ifdef HEADLESS
+     #error This file should not be included in headless library
+ #endif
+ 
  typedef unsigned long Pixel;
  
  /* This is the actual structure returned by the X server describing the
   * SERVER_OVERLAY_VISUAL property.
   */