diff --git a/CHANGES b/CHANGES
index 19a728f..d03810d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -268,3 +268,6 @@
    changed some typedefs (s_start, etc.) in pngrutil.c
    fixed dimensions of "short_months" array in pngwrite.c
    Replaced ansi2knr.c with the one from jpeg-v6
+version 1.0.0 [March 8, 1998]
+   Changed name from 1.00 to 1.0.0 (Adam Costello)
+   Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert)
diff --git a/INSTALL b/INSTALL
index a14e1ac..6df4c0b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.00 March 7, 1998
+Installing libpng version 1.0.0 March 8, 1998
 
 Before installing libpng, you must first install zlib.  zlib
 can usually be found wherever you got libpng.  zlib can be
@@ -10,7 +10,7 @@
 version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.00 or "lpng100" and "zlib-1.1.1"
+might be called "libpng-1.0.0 or "lpng100" and "zlib-1.1.1"
 or "zlib111") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -44,11 +44,13 @@
       makefile.dec  =>  DEC Alpha UNIX makefile
       makefile.sgi  =>  Silicon Graphics IRIX makefile
       makefile.sun  =>  Sun makefile
-      makefile.s2x  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.00)
-      makefile.lnx  =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.00)
+      makefile.s2x  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0)
+      makefile.lnx  =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0)
       makefile.mip  =>  MIPS makefile
       makefile.aco  =>  Acorn makefile
       makefile.ama  =>  Amiga makefile
+      smakefile.ppc =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
+                        (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
       makefile.atr  =>  Atari makefile
       makefile.bor  =>  Borland makefile
       build.bat     =>  MS-DOS batch file for Borland compiler
diff --git a/README b/README
index 4390f6a..5091707 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng 1.00 (shared library 2.1)
+README for libpng 1.0.0 (shared library 2.1)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -161,11 +161,13 @@
         makefile.dec  =>  DEC Alpha UNIX makefile
         makefile.sgi  =>  Silicon Graphics IRIX makefile
         makefile.sun  =>  Sun makefile
-        makefile.s2x  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.00)
-        makefile.lnx  =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.00)
+        makefile.s2x  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0)
+        makefile.lnx  =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0)
         makefile.mip  =>  MIPS makefile
         makefile.aco  =>  Acorn makefile
         makefile.ama  =>  Amiga makefile
+        smakefile.ppc =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
+                          (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
         makefile.atr  =>  Atari makefile
         makefile.bor  =>  Borland makefile
         build.bat     =>  MS-DOS batch file for Borland compiler
diff --git a/example.c b/example.c
index f984067..bc86aed 100644
--- a/example.c
+++ b/example.c
@@ -15,7 +15,7 @@
 
 #include "png.h"
 
-/* Check to see if a file is a PNG file using png_check_sig().  Returns
+/* Check to see if a file is a PNG file using png_sig_cmp().  Returns
  * non-zero if the image is a PNG, and 0 if it isn't a PNG.
  *
  * If this call is successful, and you are going to keep the file open,
@@ -29,7 +29,7 @@
  *
  * Many applications already read the first 2 or 4 bytes from the start
  * of the image to determine the file type, so it would be easiest just
- * to pass the bytes to png_check_sig() or even skip that if you know
+ * to pass the bytes to png_sig_cmp() or even skip that if you know
  * you have a PNG file, and call png_set_sig_bytes().
  */
 #define PNG_BYTES_TO_CHECK 4
@@ -46,7 +46,7 @@
       return 0;
 
    /* Compare the first PNG_BYTES_TO_CHECK bytes of the signature. */
-   return(png_check_sig(buf, PNG_BYTES_TO_CHECK));
+   return(png_sig_cmp(buf, (png_size_t)0, PNG_BYTES_TO_CHECK));
 }
 
 /* Read a PNG file.  You may want to return an error code if the read
@@ -92,7 +92,7 @@
    }
 
    /* Allocate/initialize the memory for image information.  REQUIRED. */
-   info_ptr = png_create_info_struct();
+   info_ptr = png_create_info_struct(png_ptr);
    if (info_ptr == NULL)
    {
       fclose(fp);
@@ -127,7 +127,7 @@
 #endif no_streams /* Use only one I/O method! */
 
    /* If we have already read some of the signature */
-   png_set_sig_bytes_read(png_ptr, sig_read);
+   png_set_sig_bytes(png_ptr, sig_read);
 
    /* The call to png_read_info() gives us all of the information from the
     * PNG file before the first IDAT (image data chunk).  REQUIRED
diff --git a/libpng.3 b/libpng.3
index b5269d7..a62d7fe 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "March 7, 1998"
+.TH LIBPNG 3 "March 8, 1998"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library
 .SH SYNOPSIS
@@ -396,7 +396,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.00 March 7, 1998
+ libpng version 1.0.0 March 8, 1998
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alumni.rpi.edu>
  Copyright (c) 1998, Glenn Randers-Pehrson
@@ -2306,8 +2306,8 @@
  0.97c                     0.97      2.0.97
  0.98                      0.98      2.0.98
  0.99                      0.99      2.0.99
- 0.99a-g                   0.99      2.0.99
- 1.0                       1.00      2.1.0
+ 0.99a-m                   0.99      2.0.99
+ 1.0.0                     1.00      2.1.0
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -2365,7 +2365,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
   
-Libpng version 1.00 (March 7, 1998):
+Libpng version 1.0.0 (March 8, 1998):
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alumni.rpi.edu).
 
diff --git a/libpng.txt b/libpng.txt
index 3740fbe..6ce69ed 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.00 March 7, 1998
+ libpng version 1.0.0 March 8, 1998
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alumni.rpi.edu>
  Copyright (c) 1998, Glenn Randers-Pehrson
diff --git a/libpngpf.3 b/libpngpf.3
index 082c47e..d187aad 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "March 7, 1998"
+.TH LIBPNGPF 3 "March 8, 1998"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library
 (private functions)
diff --git a/png.5 b/png.5
index 49d6959..d55b3a0 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "March 7, 1998"
+.TH PNG 5 "March 8, 1998"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index bbbf8e4..0eff1a0 100644
--- a/png.c
+++ b/png.c
@@ -1,12 +1,12 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 #define PNG_INTERNAL
@@ -16,7 +16,7 @@
 /* Version information for C files.  This had better match the version
  * string defined in png.h.
  */
-char png_libpng_ver[5] = "1.00";
+char png_libpng_ver[6] = "1.0.0";
 
 /* Place to hold the signature string for a PNG file. */
 png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
diff --git a/png.h b/png.h
index 899294d..af7a39b 100644
--- a/png.h
+++ b/png.h
@@ -1,12 +1,12 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see the COPYRIGHT NOTICE below.
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998 Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * Note about libpng version numbers:
  *
@@ -27,8 +27,8 @@
  *      0.97c                     0.97      2.0.97
  *      0.98                      0.98      2.0.98
  *      0.99                      0.99      2.0.99
- *      0.99a-i                   0.99      2.0.99
- *      1.00                      1.00      2.1.0
+ *      0.99a-m                   0.99      2.0.99
+ *      1.0.0                     1.00      2.1.0
  *
  *    Henceforth the source version will match the shared-library minor
  *    and patch numbers; the shared-library major version number will be
@@ -112,10 +112,10 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.00"
+#define PNG_LIBPNG_VER_STRING "1.0.0"
 
 /* careful here.  At one time, I wanted to use 082, but that would be octal.
- * Version 1.0 will be 100 here, etc.
+ * Version 1.0.0 will be 100 here, etc.
  */
 #define PNG_LIBPNG_VER  100
 
@@ -124,7 +124,7 @@
 /* Version information for C files, stored in png.c.  This had better match
  * the version above.
  */
-extern char png_libpng_ver[5];
+extern char png_libpng_ver[6];
 
 /* Structures to facilitate easy interlacing.  See png.c for more details */
 extern int FARDATA png_pass_start[7];
diff --git a/pngconf.h b/pngconf.h
index 6d0adb1..a10650d 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,12 +1,12 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 /* Any machine specific code is near the front of this file, so if you
diff --git a/pngerror.c b/pngerror.c
index 98d5930..98827a9 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,12 +1,12 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * This file provides a location for all error handling.  Users which
  * need special error handling are expected to write replacement functions
diff --git a/pngget.c b/pngget.c
index 6296589..0ae1eb7 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,12 +1,12 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/pngmem.c b/pngmem.c
index 5099920..e43474b 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,12 +1,12 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * This file provides a location for all memory allocation.  Users which
  * need special memory handling are expected to modify the code in this file
diff --git a/pngpread.c b/pngpread.c
index 1723fd1..47ece54 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,12 +1,12 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/pngread.c b/pngread.c
index b1a1f8e..cd17bca 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,12 +1,12 @@
 
 /* pngread.c - read a PNG file
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * 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 5d6682c..4623820 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,12 +1,12 @@
 
 /* pngrio.c - functions for data input
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * This file provides a location for all input.  Users which need
  * special handling are expected to write a function which has the same
diff --git a/pngrtran.c b/pngrtran.c
index adc84dd..88ab902 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,12 +1,12 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * This file contains functions optionally called by an application 
  * in order to tell libpng how to handle data when reading a PNG.
diff --git a/pngrutil.c b/pngrutil.c
index a21a03f..ea5b26a 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,12 +1,12 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * libpng 0.99
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * This file contains routines which are only called from within
  * libpng itself during the course of reading an image.
diff --git a/pngset.c b/pngset.c
index 9ccb108..957e0d7 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,12 +1,12 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * The functions here are used during reads to store data from the file
  * into the info struct, and during writes to store application data
diff --git a/pngtest.c b/pngtest.c
index e1a3ea0..568d21e 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,12 +1,12 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * 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
diff --git a/pngtrans.c b/pngtrans.c
index d67afa8..7d8a5b2 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,12 +1,12 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/pngwio.c b/pngwio.c
index c8879ef..676cc2f 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,12 +1,12 @@
 
 /* pngwio.c - functions for data output
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  *
  * This file provides a location for all output.  Users which need
  * special handling are expected to write functions which have the same
diff --git a/pngwrite.c b/pngwrite.c
index 1a92322..1cdc9c3 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,12 +1,12 @@
    
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 /* get internal access to png.h */
diff --git a/pngwtran.c b/pngwtran.c
index 25a2d64..0effc39 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,12 +1,12 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/pngwutil.c b/pngwutil.c
index 04fb1de..459c932 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,12 +1,12 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.00
+ * libpng 1.0.0
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * March 7, 1998
+ * March 8, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/scripts/SCOPTIONS.ppc b/scripts/SCOPTIONS.ppc
new file mode 100644
index 0000000..2c3503e
--- /dev/null
+++ b/scripts/SCOPTIONS.ppc
@@ -0,0 +1,7 @@
+OPTIMIZE
+OPTPEEP
+OPTTIME
+OPTSCHED
+AUTOREGISTER
+PARMS=REGISTERS
+INCLUDEDIR=hlp:ppc/include
diff --git a/scripts/makefile.lnx b/scripts/makefile.lnx
index 851eb82..3d1a76a 100644
--- a/scripts/makefile.lnx
+++ b/scripts/makefile.lnx
@@ -24,7 +24,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.00
+PNGMIN = 1.0
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a, libpng.so*, and png.h
diff --git a/scripts/makefile.s2x b/scripts/makefile.s2x
index 48055b6..0503890 100644
--- a/scripts/makefile.s2x
+++ b/scripts/makefile.s2x
@@ -23,7 +23,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.00
+PNGMIN = 1.0
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a, libpng.so*, and png.h
diff --git a/scripts/makefile.tc3 b/scripts/makefile.tc3
index 03da184..6f8f366 100644
--- a/scripts/makefile.tc3
+++ b/scripts/makefile.tc3
@@ -14,15 +14,12 @@
 E=.exe
 
 # variables
-OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O)
-pngwutil$(O)
+OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
 OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
 OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
 OBJSL1 = +png$(O) +pngset$(O) +pngget$(O) +pngrutil$(O) +pngtrans$(O)
-OBJSL2 = +pngwutil$(O) +pngmem$(O) +pngpread$(O) +pngread$(O)
-+pngerror$(O)
-OBJSL3 = +pngwrite$(O) +pngrtran$(O) +pngwtran$(O) +pngrio$(O)
-+pngwio$(O)
+OBJSL2 = +pngwutil$(O) +pngmem$(O) +pngpread$(O) +pngread$(O) +pngerror$(O)
+OBJSL3 = +pngwrite$(O) +pngrtran$(O) +pngwtran$(O) +pngrio$(O) +pngwio$(O)
 
 all: libpng.lib pngtest.exe
 
@@ -82,4 +79,4 @@
 pngtest$(E): pngtest$(O) libpng.lib
         $(CC) $(LDFLAGS) pngtest.obj libpng.lib zlib.lib
 
-# End of makefile for libpng
\ No newline at end of file
+# End of makefile for libpng
diff --git a/scripts/makefile.wat b/scripts/makefile.wat
index 761aad5..a715acb 100644
--- a/scripts/makefile.wat
+++ b/scripts/makefile.wat
@@ -1,5 +1,5 @@
 # Makefile for libpng
-# Watcom 10a+ 32-bit protected mode flat memory model
+# Watcom 10a and later 32-bit protected mode flat memory model
 
 # Adapted by Pawel Mrochen, based on makefile.msc
 # For conditions of distribution and use, see copyright notice in png.h
@@ -7,7 +7,7 @@
 
 # To use, do "wmake -f makefile.wat"
 
-# ------------- Watcom 10a+ -------------
+# ------------- Watcom 10a and later -------------
 MODEL=-mf
 CFLAGS= $(MODEL) -fpi87 -fp5 -5r -oaeilmnrt -s -zp4 -i=..\zlib
 CC=wcc386
diff --git a/scripts/smakefile.ppc b/scripts/smakefile.ppc
new file mode 100644
index 0000000..fa3cad4
--- /dev/null
+++ b/scripts/smakefile.ppc
@@ -0,0 +1,29 @@
+# Amiga powerUP (TM) Makefile
+# makefile for libpng and SAS C V6.58/7.00 PPC compiler
+# Copyright (C) 1998 by Andreas R. Kleinert
+
+CC       = scppc
+CFLAGS   = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL IDIR /zlib \
+           OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8
+LIBNAME  = libpng.a
+AR       = ppc-amigaos-ar
+AR_FLAGS = cr
+RANLIB   = ppc-amigaos-ranlib
+LDFLAGS  = -r -o
+LDLIBS   =  ../zlib/libzip.a LIB:scppc.a
+LN       = ppc-amigaos-ld
+RM       = delete quiet
+MKDIR    = makedir
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o pngread.o \
+pngerror.o pngpread.o pngwrite.o pngrtran.o pngwtran.o pngrio.o pngwio.o pngmem.o
+
+all: $(LIBNAME) pngtest
+
+$(LIBNAME): $(OBJS)
+            $(AR) $(AR_FLAGS) $@ $(OBJS)
+            $(RANLIB) $@
+
+pngtest: pngtest.o $(LIBNAME)
+        $(LN) $(LDFLAGS) pngtest LIB:c_ppc.o pngtest.o $(LIBNAME) $(LDLIBS) \
+LIB:end.o