diff --git a/ANNOUNCE b/ANNOUNCE
index 631c5bdcd..d7a7812e4 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -489,6 +489,7 @@ version 1.4.0beta64 [June 24, 2009]
      PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
 
 version 1.4.0beta65 [June 24, 2009]
+  Added a reference to the zlib-libpng license in each file.
 
 version 1.4.0betaN [future]
   Build shared libraries with -lz and sometimes -lm.
diff --git a/CHANGES b/CHANGES
index c68663763..7ac0a74fe 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2166,6 +2166,7 @@ version 1.4.0beta64 [June 24, 2009]
      PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
 
 version 1.4.0beta65 [June 24, 2009]
+  Added a reference to the zlib-libpng license in each file.
 
 version 1.4.0betaN [future]
   Build shared libraries with -lz and sometimes -lm.
diff --git a/contrib/pngminim/decoder/pngusr.h b/contrib/pngminim/decoder/pngusr.h
index e4e3b19f8..9641601b2 100644
--- a/contrib/pngminim/decoder/pngusr.h
+++ b/contrib/pngminim/decoder/pngusr.h
@@ -1,6 +1,10 @@
 /* minrdpngconf.h: headers to make a minimal png-read-only library
+ *
+ * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ *
+ * This code is released under the zlib-libpng license.
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 2007 Glenn Randers-Pehrson
+ *
  * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
  */
 
diff --git a/contrib/pngminim/encoder/pngusr.h b/contrib/pngminim/encoder/pngusr.h
index 65953c6a4..9f2020e74 100644
--- a/contrib/pngminim/encoder/pngusr.h
+++ b/contrib/pngminim/encoder/pngusr.h
@@ -1,6 +1,10 @@
 /* minwrpngconf.h: headers to make a minimal png-write-only library
+ *
+ * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ *
+ * This code is released under the zlib-libpng license.
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 2007 Glenn Randers-Pehrson
+ *
  * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
  */
 
diff --git a/contrib/pngminim/preader/pngusr.h b/contrib/pngminim/preader/pngusr.h
index f3b0038e6..cbbf81dac 100644
--- a/contrib/pngminim/preader/pngusr.h
+++ b/contrib/pngminim/preader/pngusr.h
@@ -1,6 +1,10 @@
 /* minrdpngconf.h: headers to make a minimal png-read-only library
+ *
+ * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ *
+ * This code is released under the zlib-libpng license.
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 2007 Glenn Randers-Pehrson
+ *
  * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
  */
 
diff --git a/contrib/visupng/PngFile.c b/contrib/visupng/PngFile.c
index 959afe9de..dbd5b184d 100644
--- a/contrib/visupng/PngFile.c
+++ b/contrib/visupng/PngFile.c
@@ -2,8 +2,11 @@
 //  PNGFILE.C -- Image File Functions
 //-------------------------------------
 
-// Copyright 2000, Willem van Schaik.  For conditions of distribution and
-// use, see the copyright/license/disclaimer notice in png.h
+// Copyright 2000, Willem van Schaik.
+//
+// This code is released under the zlib-libpng license.
+// For conditions of distribution and use, see the
+// copyright/license/disclaimer notice in png.h
 
 #include <windows.h>
 #include <commdlg.h>
diff --git a/contrib/visupng/PngFile.h b/contrib/visupng/PngFile.h
index a900fd4fd..8632125ca 100644
--- a/contrib/visupng/PngFile.h
+++ b/contrib/visupng/PngFile.h
@@ -2,8 +2,11 @@
 //  PNGFILE.H -- Header File for pngfile.c
 //------------------------------------------
 
-// Copyright 2000, Willem van Schaik.  For conditions of distribution and
-// use, see the copyright/license/disclaimer notice in png.h
+// Copyright 2000, Willem van Schaik.
+//
+// This code is released under the zlib-libpng license.
+// For conditions of distribution and use, see the
+// copyright/license/disclaimer notice in png.h
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/contrib/visupng/README.txt b/contrib/visupng/README.txt
index 4a753d8e2..6b49cb287 100644
--- a/contrib/visupng/README.txt
+++ b/contrib/visupng/README.txt
@@ -1,8 +1,11 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng
 ------------------------------------------------------------------------
 
-Copyright 2000, Willem van Schaik.  For conditions of distribution and
-use, see the copyright/license/disclaimer notice in png.h
+Copyright 2000, Willem van Schaik.
+
+This code is released under the zlib-libpng license.
+For conditions of distribution and use, see the
+copyright/license/disclaimer notice in png.h
 
 As a PNG .dll demo VisualPng is finished. More features would only hinder
 the program's objective. However, further extensions (like support for other 
diff --git a/contrib/visupng/VisualPng.c b/contrib/visupng/VisualPng.c
index f2cf6ee9a..2fd0ea1f6 100644
--- a/contrib/visupng/VisualPng.c
+++ b/contrib/visupng/VisualPng.c
@@ -2,8 +2,11 @@
 //  VisualPng.C -- Shows a PNG image
 //------------------------------------
 
-// Copyright 2000, Willem van Schaik.  For conditions of distribution and
-// use, see the copyright/license/disclaimer notice in png.h
+// Copyright 2000, Willem van Schaik.
+//
+// This code is released under the zlib-libpng license.
+// For conditions of distribution and use, see the
+// copyright/license/disclaimer notice in png.h
 
 // switches
 
diff --git a/example.c b/example.c
index 2571b145f..a647b063e 100644
--- a/example.c
+++ b/example.c
@@ -7,6 +7,7 @@
  * Maintained 1998-2009 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
  */
 
 /* This is an example of how to use libpng to read and write PNG files.
diff --git a/png.c b/png.c
index 72a1d20e0..659a21681 100644
--- a/png.c
+++ b/png.c
@@ -2,10 +2,13 @@
 /* png.c - location for general purpose libpng functions
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 #define PNG_NO_EXTERN
diff --git a/png.h b/png.h
index 74388e85c..2371192e1 100644
--- a/png.h
+++ b/png.h
@@ -6,6 +6,8 @@
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license (See LICENSE, below)
+ *
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
diff --git a/pngconf.h b/pngconf.h
index bb25ab63d..a566d3952 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -6,6 +6,9 @@
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ *
  */
 
 /* Any machine specific code is near the front of this file, so if you
diff --git a/pngerror.c b/pngerror.c
index dc04956a2..9a51d26d3 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -2,11 +2,13 @@
 /* pngerror.c - stub functions for i/o and memory allocation
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file provides a location for all error handling.  Users who
  * need special error handling are expected to write replacement functions
  * and use png_set_error_fn() to use those functions.  See the instructions
diff --git a/pngget.c b/pngget.c
index 4d01c6ef8..632d325f4 100644
--- a/pngget.c
+++ b/pngget.c
@@ -2,10 +2,13 @@
 /* pngget.c - retrieval of values from info struct
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 #include "png.h"
diff --git a/pngmem.c b/pngmem.c
index 28ca4798a..eca9a2cbd 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -2,11 +2,13 @@
 /* pngmem.c - stub functions for memory allocation
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file provides a location for all memory allocation.  Users who
  * need special memory handling are expected to supply replacement
  * functions for png_malloc() and png_free(), and to use
diff --git a/pngpread.c b/pngpread.c
index 381346b31..ecef57c98 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -2,10 +2,13 @@
 /* pngpread.c - read a png file in push mode
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 #include "png.h"
diff --git a/pngpriv.h b/pngpriv.h
index 9eb3e04f5..7c034378a 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -6,6 +6,9 @@
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ *
  */
 
 /* The symbols declared in this file (including the functions declared
diff --git a/pngread.c b/pngread.c
index b9420d783..f225039e6 100644
--- a/pngread.c
+++ b/pngread.c
@@ -2,11 +2,13 @@
 /* pngread.c - read a PNG file
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file contains routines that an application calls directly to
  * read a PNG file or stream.
  */
diff --git a/pngrio.c b/pngrio.c
index e57d1b7af..b44229c4b 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -2,11 +2,13 @@
 /* pngrio.c - functions for data input
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file provides a location for all input.  Users who need
  * special handling are expected to write a function that has the same
  * arguments as this and performs a similar function, but that possibly
diff --git a/pngrtran.c b/pngrtran.c
index 67d001fea..f1a2b6ad1 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -2,11 +2,13 @@
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file contains functions optionally called by an application
  * in order to tell libpng how to handle data when reading a PNG.
  * Transformations that are used in both reading and writing are
diff --git a/pngrutil.c b/pngrutil.c
index 40e4c0ead..027a85a25 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -2,11 +2,13 @@
 /* pngrutil.c - utilities to read a PNG file
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file contains routines that are only called from within
  * libpng itself during the course of reading an image.
  */
diff --git a/pngset.c b/pngset.c
index f3c66c0f9..071b02612 100644
--- a/pngset.c
+++ b/pngset.c
@@ -2,11 +2,13 @@
 /* pngset.c - storage of image information into info struct
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * The functions here are used during reads to store data from the file
  * into the info struct, and during writes to store application data
  * into the info struct for writing into the file.  This abstracts the
diff --git a/pngtest.c b/pngtest.c
index 279279cc7..8f5c1b02e 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -2,11 +2,13 @@
 /* pngtest.c - a simple test program to test libpng
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This program reads in a PNG image, writes it out again, and then
  * compares the two files.  If the files are identical, this shows that
  * the basic chunk handling, filtering, and (de)compression code is working
diff --git a/pngtrans.c b/pngtrans.c
index f6174a2fd..cd9730a9d 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -2,10 +2,13 @@
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 #include "png.h"
diff --git a/pngwio.c b/pngwio.c
index e89e74bf8..0e7e8d0bb 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -2,11 +2,13 @@
 /* pngwio.c - functions for data output
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  * This file provides a location for all output.  Users who need
  * special handling are expected to write functions that have the same
  * arguments as these and perform similar functions, but that possibly
diff --git a/pngwrite.c b/pngwrite.c
index 0c66c7dcc..6d09f75ab 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -2,10 +2,13 @@
 /* pngwrite.c - general routines to write a PNG file
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 /* get internal access to png.h */
diff --git a/pngwtran.c b/pngwtran.c
index 0e1d00b61..5fd0962bb 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -2,10 +2,13 @@
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 #include "png.h"
diff --git a/pngwutil.c b/pngwutil.c
index f5a9f5ee1..fa99320fa 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -2,10 +2,13 @@
 /* pngwutil.c - utilities to write a PNG file
  *
  * Last changed in libpng 1.4.0 [June 24, 2009]
- * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This code is released under the zlib-libpng license.
+ * For conditions of distribution and use, see copyright notice in png.h
+ *
  */
 
 #include "png.h"
diff --git a/projects/visualc6/README.txt b/projects/visualc6/README.txt
index 27375ee30..fd9628c40 100644
--- a/projects/visualc6/README.txt
+++ b/projects/visualc6/README.txt
@@ -2,6 +2,8 @@ Microsoft Developer Studio Project File, Format Version 6.00 for libpng.
 
 Copyright (C) 2000-2004 Simon-Pierre Cadieux.
 Copyright (C) 2004 Cosmin Truta.
+
+This code is released under the zlib-libpng license.
 For conditions of distribution and use, see copyright notice in png.h
 
 
diff --git a/projects/visualc71/README.txt b/projects/visualc71/README.txt
index cc2ca85e5..87dc1ff52 100644
--- a/projects/visualc71/README.txt
+++ b/projects/visualc71/README.txt
@@ -1,6 +1,8 @@
 Microsoft Developer Studio Project File, Format Version 7.10 for libpng.
 
 Copyright (C) 2004 Simon-Pierre Cadieux.
+
+This code is released under the zlib-libpng license.
 For conditions of distribution and use, see copyright notice in png.h
 
 Assumptions:
diff --git a/projects/visualc71/README_zlib.txt b/projects/visualc71/README_zlib.txt
index ff6a5c7cb..c6b0aa3f6 100644
--- a/projects/visualc71/README_zlib.txt
+++ b/projects/visualc71/README_zlib.txt
@@ -6,6 +6,8 @@ Microsoft Developer Studio Project File, Format Version 7.10 for zlib.
 
 Copyright (C) 2004 Simon-Pierre Cadieux.
 Copyright (C) 2004 Cosmin Truta.
+
+This code is released under the zlib-libpng license.
 For conditions of distribution and use, see copyright notice in zlib.h.
 
 
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index c01b8be6f..a2c3a667a 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -2,6 +2,8 @@
 project(PNG)
 
 # Copyright (C) 2007 Glenn Randers-Pehrson
+
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 set(PNGLIB_MAJOR 1)
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index fb6a0b783..865ca76f1 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -4,6 +4,8 @@
 # provides configuration info for libpng.
 
 # Copyright (C) 2002 Glenn Randers-Pehrson
+
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Modeled after libxml-config.
diff --git a/scripts/libpng-config.in b/scripts/libpng-config.in
index 6475ffca2..ed017e556 100755
--- a/scripts/libpng-config.in
+++ b/scripts/libpng-config.in
@@ -4,6 +4,8 @@
 # provides configuration info for libpng.
 
 # Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson
+
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Modeled after libxml-config.
diff --git a/scripts/libpng.icc b/scripts/libpng.icc
index f9c51af3a..c2a8862b2 100644
--- a/scripts/libpng.icc
+++ b/scripts/libpng.icc
@@ -1,7 +1,10 @@
 // Project file for libpng (static)
 // IBM VisualAge/C++ version 4.0 or later
 // Copyright (C) 2000 Cosmin Truta
+//
+// This code is released under the zlib-libpng license.
 // For conditions of distribution and use, see copyright notice in png.h
+//
 // Notes:
 //   All modules are compiled in C mode
 //   Tested with IBM VAC++ 4.0 under Win32
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 94409496c..6bbebf7ee 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -3,6 +3,8 @@
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 278841b19..22e2ab099 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -3,6 +3,8 @@
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index ae70e33ad..00f8ae497 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -3,6 +3,8 @@
 # Copyright (C) 2000 Cosmin Truta
 # Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Location of the zlib library and include files
diff --git a/scripts/makefile.amiga b/scripts/makefile.amiga
index 79cb42499..f39c5b3f3 100644
--- a/scripts/makefile.amiga
+++ b/scripts/makefile.amiga
@@ -1,6 +1,8 @@
 # Commodore Amiga Makefile
 # makefile for libpng and SAS C V6.5x compiler
 # Copyright (C) 1995-2000 Wolf Faust
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 #
 # Note: Use #define PNG_READ_BIG_ENDIAN_SUPPORTED in pngconf.h
diff --git a/scripts/makefile.atari b/scripts/makefile.atari
index 9566d5d60..6a8ea63b9 100644
--- a/scripts/makefile.atari
+++ b/scripts/makefile.atari
@@ -1,7 +1,10 @@
 # makefile for libpng
 # Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
+#
 # modified for LC56/ATARI assumes libz.lib is in same dir and uses default
 # rules for library management
 #
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index b2dd3a087..ab41654e9 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -3,6 +3,8 @@
 # Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
 # Copyright (C) 1999 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index 2c49a896a..f65efc1df 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -7,6 +7,8 @@
 #    and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
 # Copyright (C) 1998-2000 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # This makefile intends to support building outside the src directory
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index bc39865d3..1bc3527c4 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -4,6 +4,8 @@
 # derived from makefile.linux:
 #  Copyright (C) 1998, 1999 Greg Roelofs
 #  Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where "make install" puts libpng.a, libpng14.dylib, png.h and pngconf.h
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 76563ff3a..ed115a4c0 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -1,6 +1,8 @@
 # makefile for libpng on DEC Alpha Unix
 # Copyright (C) 2000-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.dj2 b/scripts/makefile.dj2
index 5fc8addd6..1b33c4a68 100644
--- a/scripts/makefile.dj2
+++ b/scripts/makefile.dj2
@@ -1,6 +1,8 @@
 # DJGPP (DOS gcc) makefile for libpng
 # Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where make install will put libpng.a and png.h
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index 4bee3804d..3e2bd9c14 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -2,6 +2,8 @@
 # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs
 # and Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Modified for Debian by Junichi Uekawa and Josselin Mouette
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index f4ab73732..de0b62571 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -1,5 +1,7 @@
 # makefile for libpng under FreeBSD
 # Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 PREFIX?=        /usr/local
diff --git a/scripts/makefile.gcc b/scripts/makefile.gcc
index c4bfbf30c..a7c4548c6 100644
--- a/scripts/makefile.gcc
+++ b/scripts/makefile.gcc
@@ -2,6 +2,8 @@
 # Copyright (C) 2008 Glenn Randers-Pehrson
 # Copyright (C) 2000 Cosmin Truta
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Location of the zlib library and include files
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index e4527d915..f84b23531 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -2,6 +2,8 @@
 # Copyright (C) 1999-2002, 2006, 2009 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42
 # contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Where the zlib library and include files are located
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index d04a0c0e9..cc6976037 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -3,6 +3,8 @@
 # Copyright (C) 2001, Laurent faillie
 # Copyright (C) 1998, 1999 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index d4431cfe1..cf828ecf2 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -2,6 +2,8 @@
 # Copyright (C) 1999-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42
 # contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Where the zlib library and include files are located
diff --git a/scripts/makefile.ibmc b/scripts/makefile.ibmc
index f0fd860cd..4b3ecfdb3 100644
--- a/scripts/makefile.ibmc
+++ b/scripts/makefile.ibmc
@@ -2,7 +2,10 @@
 # IBM C version 3.x for Win32 and OS/2
 # Copyright (C) 2006 Glenn Randers-Pehrson
 # Copyright (C) 2000 Cosmin Truta
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
+#
 # Notes:
 #   Derived from makefile.std
 #   All modules are compiled in C mode
diff --git a/scripts/makefile.intel b/scripts/makefile.intel
index b830c06d6..24771adfa 100644
--- a/scripts/makefile.intel
+++ b/scripts/makefile.intel
@@ -4,10 +4,12 @@
 # Copyright (C) 2006 Glenn Randers-Pehrson
 # Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
 # copyright 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
-
+#
 # To use, do "nmake /f scripts\makefile.intel"
-
+#
 # ------------------- Intel C/C++ Compiler 4.0 and later -------------------
 
 # Where the zlib library and include files are located
diff --git a/scripts/makefile.knr b/scripts/makefile.knr
index d64e6584e..2ad0f88b9 100644
--- a/scripts/makefile.knr
+++ b/scripts/makefile.knr
@@ -1,8 +1,10 @@
 # makefile for libpng
 # Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
-
+#
 # This makefile requires the file ansi2knr.c, which you can get
 # from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
 # If you have libjpeg, you probably already have ansi2knr.c in the jpeg
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 06a7103b7..e2f8ad585 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -2,6 +2,8 @@
 # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs and
 # Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index 7c6e5a48a..d5d4e019c 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -3,13 +3,15 @@
 #   of the library, and builds two copies of pngtest: one
 #   statically linked and one dynamically linked.
 #
-# Built from makefile.cygwin
 # Copyright (C) 2002, 2006, 2008 Soren Anderson, Charles Wilson,
 #    and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
 # Copyright (C) 1998-2000, 2007 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
+# Built from makefile.cygwin
 
 # This makefile intends to support building outside the src directory
 # if desired. When invoking it, specify an argument to SRCDIR on the
diff --git a/scripts/makefile.mips b/scripts/makefile.mips
index ae9df26a8..6bb5f1417 100644
--- a/scripts/makefile.mips
+++ b/scripts/makefile.mips
@@ -1,6 +1,8 @@
 # makefile for libpng
 # Copyright (C) Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where make install puts libpng.a and png.h
diff --git a/scripts/makefile.msc b/scripts/makefile.msc
index 8bc80a1ed..9416c4e46 100644
--- a/scripts/makefile.msc
+++ b/scripts/makefile.msc
@@ -1,7 +1,10 @@
 # makefile for libpng
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # Copyright (C) 2006, 2009 Glenn Randers-Pehrson
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
+#
 # Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
 
 # -------- Microsoft C 5.1 and later, does not use assembler code --------
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 29ee34acf..b550bb823 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -3,6 +3,8 @@
 # make includes && make install
 # Copyright (C) 2002 Patrick R.L. Welche
 # Copyright (C) 2007, 2009 Glenn Randers-Pehrson
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # You should also run makefile.netbsd
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index a02129319..8ed681270 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -3,6 +3,8 @@
 # make includes && make install
 # Copyright (C) 2002 Patrick R.L. Welche
 # Copyright (C) 2007, 2009 Glenn Randers-Pehrson
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # You should also run makefile.ne0bsd
diff --git a/scripts/makefile.nommx b/scripts/makefile.nommx
index f19a74cec..01599b55f 100644
--- a/scripts/makefile.nommx
+++ b/scripts/makefile.nommx
@@ -2,6 +2,8 @@
 # Copyright (C) 1998, 1999, 2002, 2006-2008 Greg Roelofs and
 # Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 994f3d2c2..d0c95986b 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -1,6 +1,8 @@
 # makefile for libpng
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # Copyright (C) 2007-2008 Glenn Randers-Pehrson
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 PREFIX?= /usr/local
diff --git a/scripts/makefile.os2 b/scripts/makefile.os2
index 1704acc1b..c25044547 100644
--- a/scripts/makefile.os2
+++ b/scripts/makefile.os2
@@ -1,4 +1,6 @@
 # makefile for libpng on OS/2 with gcc
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Related files: pngos2.def
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 93083fcb1..515394a9c 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -4,6 +4,8 @@
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index 7f759c404..3ed864f4c 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -1,6 +1,8 @@
 # makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index c36937faa..bde27c1a3 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -1,6 +1,8 @@
 # makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index cf8b4250e..cfb966050 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -4,6 +4,8 @@
 # Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
 # Copyright (C) 1998-2001 Greg Roelofs
 # Copyright (C) 1996-1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index edc497006..a8a9f9c0d 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -3,6 +3,8 @@
 # Contributed by William L. Sebok, based on makefile.linux
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
diff --git a/scripts/makefile.std b/scripts/makefile.std
index 048add1b8..b720bd603 100644
--- a/scripts/makefile.std
+++ b/scripts/makefile.std
@@ -1,6 +1,8 @@
 # makefile for libpng
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where make install puts libpng.a and png.h
diff --git a/scripts/makefile.sunos b/scripts/makefile.sunos
index 57977d838..3711bb7d1 100644
--- a/scripts/makefile.sunos
+++ b/scripts/makefile.sunos
@@ -1,6 +1,8 @@
 # makefile for libpng
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where make install puts libpng.a and png.h
diff --git a/scripts/makefile.vcawin32 b/scripts/makefile.vcawin32
index 297f809f3..f36862590 100644
--- a/scripts/makefile.vcawin32
+++ b/scripts/makefile.vcawin32
@@ -1,7 +1,10 @@
 # makefile for libpng
 # Copyright (C) 2006,2009 Glenn Randers-Pehrson
 # Copyright (C) 1998 Tim Wegner
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
+#
 # Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
 # To use, do "nmake /f scripts\makefile.vcawin32"
 
diff --git a/scripts/makefile.vcwin32 b/scripts/makefile.vcwin32
index ab7541a0d..9fb7caee6 100644
--- a/scripts/makefile.vcwin32
+++ b/scripts/makefile.vcwin32
@@ -1,7 +1,10 @@
 # makefile for libpng
 # Copyright (C) 1998 Tim Wegner
 # Copyright (C) 2006,2009 Glenn Randers-Pehrson
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
+#
 # Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
 # To use, do "nmake /f scripts\makefile.vcwin32"
 
diff --git a/scripts/makefile.watcom b/scripts/makefile.watcom
index 7b9858637..c54fb9720 100644
--- a/scripts/makefile.watcom
+++ b/scripts/makefile.watcom
@@ -3,6 +3,8 @@
 
 # Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
 # copyright 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # To use, do "wmake /f scripts\makefile.watcom"
diff --git a/scripts/smakefile.ppc b/scripts/smakefile.ppc
index e5c027841..8e6a6130a 100644
--- a/scripts/smakefile.ppc
+++ b/scripts/smakefile.ppc
@@ -1,6 +1,8 @@
 # Amiga powerUP (TM) Makefile
 # makefile for libpng and SAS C V6.58/7.00 PPC compiler
 # Copyright (C) 1998 by Andreas R. Kleinert
+#
+# This code is released under the zlib-libpng license.
 # For conditions of distribution and use, see copyright notice in png.h
 
 CC       = scppc