diff --git a/ANNOUNCE b/ANNOUNCE
index 6d3b5e0..579c7e4 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,19 +1,16 @@
 
-Libpng 1.2.3rc6 - May 13, 2002
+Libpng 1.2.3 - May 21, 2002
 
-This is not intended to be a public release.  It will be replaced
-within a few weeks by a public version or by another test version.
+This is a public release of libpng, intended for use in production codes.
 
 Changes since the last public release (1.2.2):
 
-version 1.2.2patch03 [April 18, 2002]
   Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and makefile.sggcc
   Fixed VER -> PNGVER typo in makefile.macosx and added install-static to install
   Added install: target to makefile.32sunu and makefile.64sunu
   Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng
     subdirectory to libpngNN subdirectory without the full pathname.
   Moved generation of libpng.pc from "install" to "all" in 15 makefiles.
-version 1.2.3rc1 [April 27, 2002]
   Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos).
   Added $(DESTDIR) feature to 24 makefiles (Tim Mooney)
   Fixed bug with $prefix, should be $(prefix) in makefile.hpux.
@@ -23,36 +20,18 @@
   Revised makefile.darwin to make relative links without full pathname.
   Added setjmp() at the end of png_create_*_struct_2() in case user forgets
     to put one in their application.
-  Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and
-    removed them from module definition files.
-version 1.2.3rc2 [May 1, 2002]
-  Fixed bug in reporting number of channels in pngget.c and pngset.c,
-    that was introduced in version 1.2.2beta5.
-  Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(),
-    png_default_flush(), and png_push_fill_buffer() and included them in
-    module definition files.
+  Fixed bug in reporting number of channels in pngget.c, introduced in
+    version 1.2.2
   Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles.
-version 1.2.3rc3 [May 1, 2002]
-  Revised prototype for png_default_flush()
   Remove old libpng.pc and libpngNN.pc before installing new ones.
-version 1.2.3rc4 [May 2, 2002]
-  Typos in *.def files (png_default_read|write -> png_default_read|write_data)
-  In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc
-  Added libpng-config and libpngNN-config and modified makefiles to install them.
-  Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles
+  Revised 15 makefiles to build libpng-config and libpngNN-config from
+    libpng-config-*.in.
   Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp
-version 1.2.3rc5 [May 11, 2002]
   Changed "error" and "message" in prototypes to "error_message" and
     "warning_message" to avoid namespace conflict.
-  Revised 15 makefiles to build libpng-config from libpng-config-*.in
-  Once more restored png_zalloc and png_zfree to nonexported form.
-  Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
-    to nonexported form, but with PNGAPI, and removed them from module def files.
-version 1.2.3rc6 [May 13, 2002]
-  Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
-  Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp.
-  Removed leftover libpng-config "sed" script from four makefiles.
-  Revised libpng-config creating script in 16 makefiles.
+  Restored png_zalloc and png_zfree to nonexported form as in libpng-1.2.1.
+  Removed description of png_set_mem_fn() from documentation.
+  Revised projects/msvc/README.txt
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
diff --git a/CHANGES b/CHANGES
index 03f3861..0a70315 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1113,11 +1113,18 @@
   Once more restored png_zalloc and png_zfree to regular nonexported form.
   Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
     to nonexported form, but with PNGAPI, and removed them from module def files.
-version 1.2.3rc6 [May 13, 2002]
+version 1.2.3rc6 [May 14, 2002]
   Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
   Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp.
   Removed leftover libpng-config "sed" script from four makefiles.
   Revised libpng-config creating script in 16 makefiles.
+version 1.2.3 [May 21, 2002]
+  Revised libpng-config target in makefile.cygwin.
+  Removed description of png_set_mem_fn() from documentation.
+  Revised makefile.freebsd.
+  Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR).
+  Revised projects/msvc/README.txt
+  Changed -lpng to -lpngNN in LDFLAGS in several makefiles.
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
diff --git a/INSTALL b/INSTALL
index feef582..0afc525 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.3rc6 - May 13, 2002
+Installing libpng version 1.2.3 - May 21, 2002
 
 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-1.2.3rc6" or "lpng109" and "zlib-1.1.3"
+might be called "libpng-1.2.3" or "lpng109" and "zlib-1.1.3"
 or "zlib113") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -64,8 +64,8 @@
 include
 
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
- makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.3rc6)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.3rc6,
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.3)
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.3,
                        uses assembler code tuned for Intel MMX platform)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -86,10 +86,10 @@
  makefile.ne0bsd  =>  NetBSD/cc makefile, uses PNGGCCRD, makes libpng0.so
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng12.so.0.1.2.3rc6)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng12.so.0.1.2.3)
  makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng12.so.0.1.2.3rc6)
- makefile.so9      =>  Solaris 9 makefile (gcc, creates libpng12.so.0.1.2.3rc6)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng12.so.0.1.2.3)
+ makefile.so9      =>  Solaris 9 makefile (gcc, creates libpng12.so.0.1.2.3)
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/KNOWNBUG b/KNOWNBUG
index cb004fc..a0d1159 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.2.3rc6
+Known bugs in libpng version 1.2.3
 
 1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
    reading interlaced PNG files, when assembler code is enabled.
diff --git a/LICENSE b/LICENSE
index a335c26..c38b8ff 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.0.7, July 1, 2000, through 1.2.3rc6, May 13, 2002, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.3, May 21, 2002, are
 Copyright (c) 2000-2002 Glenn Randers-Pehrson
 and are distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors
@@ -99,4 +99,4 @@
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-May 13, 2002
+May 21, 2002
diff --git a/README b/README
index 42394ed..026d902 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng 1.2.3rc6 - May 13, 2002 (shared library 2.1)
+README for libpng 1.2.3 - May 21, 2002 (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.
@@ -187,9 +187,9 @@
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.3rc6)
+                            (gcc, creates libpng12.so.0.1.2.3)
        makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng12.so.0.1.2.3rc6, uses assembler code
+                            libpng12.so.0.1.2.3, uses assembler code
                             tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -210,12 +210,12 @@
        makefile.ne0bsd =>  NetBSD/cc makefile, PNGGCCRD, makes libpng0.so
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
-       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng12.so.0.1.2.3rc6)
+       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng12.so.0.1.2.3)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.3rc6)
+                            (gcc, creates libpng12.so.0.1.2.3)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.3rc6)
+                            (gcc, creates libpng12.so.0.1.2.3)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/Y2KINFO b/Y2KINFO
index 2645cad..d5345d3 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      May 13, 2002
+      May 21, 2002
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.2.3rc6 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.3 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer
diff --git a/configure b/configure
index 9ae7862..f9cc370 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 echo "
-  There is no \"configure\" script for Libpng-1.2.3rc6.  Instead, please
+  There is no \"configure\" script for Libpng-1.2.3.  Instead, please
   copy the appropriate makefile for your system from the \"scripts\"
   directory.  Read the INSTALL file for more details.
 "
diff --git a/libpng.3 b/libpng.3
index 5a25d6b..d30c09d 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "May 13, 2002"
+.TH LIBPNG 3 "May 21, 2002"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.3rc6
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.3
 .SH SYNOPSIS
 \fI\fB
 
@@ -787,7 +787,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.3rc6 - May 13, 2002
+ libpng version 1.2.3 - May 21, 2002
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2002 Glenn Randers-Pehrson
@@ -3088,18 +3088,17 @@
 in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively.  To change
 these functions, call the appropriate png_set_*_fn() function.
 
-Memory allocation is done through the functions png_malloc(), png_zalloc(),
+Memory allocation is done through the functions png_malloc()
 and png_free().  These currently just call the standard C functions.  If
 your pointers can't access more then 64K at a time, you will want to set
 MAXSEG_64K in zlib.h.  Since it is unlikely that the method of handling
 memory allocation on a platform will change between applications, these
 functions must be modified in the library at compile time.  If you prefer
 to use a different method of allocating and freeing data, you can use
+png_create_read_struct_2() or png_create_write_struct_2() to register
+your own functions as described above.
 
-    png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr,
-       png_malloc_ptr malloc_fn, png_free_ptr free_fn)
-
-This function also provides a void pointer that can be retrieved via
+These functions also provide a void pointer that can be retrieved via
 
     mem_ptr=png_get_mem_ptr(png_ptr);
 
@@ -3109,7 +3108,7 @@
        png_size_t size);
     void free_fn(png_structp png_ptr, png_voidp ptr);
 
-Your malloc_fn() can return NULL in case of failure.  The png_malloc()
+Your malloc_fn() should return NULL in case of failure.  The png_malloc()
 function will call png_error() if it receives a NULL from the system
 memory allocator or from your replacement malloc_fn().
 
@@ -3638,13 +3637,13 @@
 
 .SH IX. Y2K Compliance in libpng
 
-May 13, 2002
+May 21, 2002
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.3rc6 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.3 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3832,7 +3831,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.3rc6 - May 13, 2002:
+Libpng version 1.2.3 - May 21, 2002:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
 
@@ -3849,7 +3848,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.0.7, July 1, 2000, through 1.2.3rc6, May 13, 2002, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.3, May 21, 2002, are
 Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors
@@ -3941,7 +3940,7 @@
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-May 13, 2002
+May 21, 2002
 
 .\" end of man page
 
diff --git a/libpng.txt b/libpng.txt
index 4576a7a..9bac757 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.3rc6 - May 13, 2002
+ libpng version 1.2.3 - May 21, 2002
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2002 Glenn Randers-Pehrson
@@ -2301,18 +2301,17 @@
 in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively.  To change
 these functions, call the appropriate png_set_*_fn() function.
 
-Memory allocation is done through the functions png_malloc(), png_zalloc(),
+Memory allocation is done through the functions png_malloc()
 and png_free().  These currently just call the standard C functions.  If
 your pointers can't access more then 64K at a time, you will want to set
 MAXSEG_64K in zlib.h.  Since it is unlikely that the method of handling
 memory allocation on a platform will change between applications, these
 functions must be modified in the library at compile time.  If you prefer
 to use a different method of allocating and freeing data, you can use
+png_create_read_struct_2() or png_create_write_struct_2() to register
+your own functions as described above.
 
-    png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr,
-       png_malloc_ptr malloc_fn, png_free_ptr free_fn)
-
-This function also provides a void pointer that can be retrieved via
+These functions also provide a void pointer that can be retrieved via
 
     mem_ptr=png_get_mem_ptr(png_ptr);
 
@@ -2322,7 +2321,7 @@
        png_size_t size);
     void free_fn(png_structp png_ptr, png_voidp ptr);
 
-Your malloc_fn() can return NULL in case of failure.  The png_malloc()
+Your malloc_fn() should return NULL in case of failure.  The png_malloc()
 function will call png_error() if it receives a NULL from the system
 memory allocator or from your replacement malloc_fn().
 
@@ -2851,13 +2850,13 @@
 
 IX. Y2K Compliance in libpng
 
-May 13, 2002
+May 21, 2002
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.3rc6 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.3 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
diff --git a/libpngpf.3 b/libpngpf.3
index baaee49..e5c91e0 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "May 13, 2002"
+.TH LIBPNGPF 3 "May 21, 2002"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.3rc6
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.3
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index 20bc55a..ab427a0 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "May 13, 2002"
+.TH PNG 5 "May 21, 2002"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index f004f9e..8d79ba0 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * libpng version 1.2.3rc6 - May 13, 2002
+ * libpng version 1.2.3 - May 21, 2002
  * Copyright (c) 1998-2002 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.)
@@ -13,14 +13,14 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_3rc6 Your_png_h_is_not_version_1_2_3rc6;
+typedef version_1_2_3 Your_png_h_is_not_version_1_2_3;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
 
 #ifdef PNG_USE_GLOBAL_ARRAYS
 /* png_libpng_ver was changed to a function in version 1.0.5c */
-const char png_libpng_ver[18] = "1.2.3rc6";
+const char png_libpng_ver[18] = "1.2.3";
 
 /* png_sig was changed to a function in version 1.0.5c */
 /* Place to hold the signature string for a PNG file. */
@@ -663,7 +663,7 @@
 png_get_copyright(png_structp png_ptr)
 {
    if (png_ptr != NULL || png_ptr == NULL)  /* silence compiler warning */
-   return ((png_charp) "\n libpng version 1.2.3rc6 - May 13, 2002\n\
+   return ((png_charp) "\n libpng version 1.2.3 - May 21, 2002\n\
    Copyright (c) 1998-2002 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
@@ -681,8 +681,8 @@
 {
    /* Version of *.c files used when building libpng */
    if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
-      return((png_charp) "1.2.3rc6");
-   return((png_charp) "1.2.3rc6");
+      return((png_charp) "1.2.3");
+   return((png_charp) "1.2.3");
 }
 
 png_charp PNGAPI
diff --git a/png.h b/png.h
index a6518a5..3e6d333 100644
--- a/png.h
+++ b/png.h
@@ -1,6 +1,6 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.3rc6 - May 13, 2002
+ * libpng version 1.2.3 - May 21, 2002
  * Copyright (c) 1998-2002 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.)
@@ -8,7 +8,7 @@
  * 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
- *  libpng versions 0.97, January 1998, through 1.2.3rc6 - May 13, 2002: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.3 - May 21, 2002: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -117,7 +117,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.0.7, July 1, 2000, through 1.2.3rc6, May 13, 2002, are
+ * libpng versions 1.0.7, July 1, 2000, through 1.2.3, May 21, 2002, are
  * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.0.6
  * with the following individuals added to the list of Contributing Authors
@@ -222,13 +222,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    May 13, 2002
+ *    May 21, 2002
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.2.3rc6 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.3 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -284,7 +284,7 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.3rc6"
+#define PNG_LIBPNG_VER_STRING "1.2.3"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  %DLLNUM%
@@ -296,7 +296,7 @@
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  6
+#define PNG_LIBPNG_VER_BUILD  0
 
 #define PNG_LIBPNG_BUILD_ALPHA    1
 #define PNG_LIBPNG_BUILD_BETA     2
@@ -304,7 +304,7 @@
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_TYPEMASK 7
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with STABLE only */
-#define PNG_LIBPNG_BUILD_TYPE 3
+#define PNG_LIBPNG_BUILD_TYPE 4
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -1264,9 +1264,9 @@
 
 
 /* This prevents a compiler error in png.c if png.c and png.h are both at
-   version 1.2.3rc6
+   version 1.2.3
  */
-typedef png_structp version_1_2_3rc6;
+typedef png_structp version_1_2_3;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -2388,7 +2388,7 @@
 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
 
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.3rc6 - May 13, 2002 (header)\n"
+   " libpng version 1.2.3 - May 21, 2002 (header)\n"
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on
diff --git a/pngasmrd.h b/pngasmrd.h
index dfee05c..2cb38e2 100644
--- a/pngasmrd.h
+++ b/pngasmrd.h
@@ -1,6 +1,6 @@
 /* pngasmrd.h - assembler version of utilities to read a PNG file
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 2002 Glenn Randers-Pehrson
  *
diff --git a/pngconf.h b/pngconf.h
index 23e83ba..9f2acea 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,6 +1,6 @@
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngerror.c b/pngerror.c
index 6eac623..aeb06e5 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -92,13 +92,13 @@
      }
    }
    if (png_ptr->warning_fn != NULL)
-      (*(png_ptr->warning_fn))(png_ptr, (png_const_charp)
-        (warning_message+offset));
+      (*(png_ptr->warning_fn))(png_ptr,
+         (png_const_charp)(warning_message+offset));
    else
       png_default_warning(png_ptr, (png_const_charp)(warning_message+offset));
 }
 
-/* These utilities are used internally to build a warning message that relates
+/* These utilities are used internally to build an error message that relates
  * to the current chunk.  The chunk name comes from png_ptr->chunk_name,
  * this is used to prefix the message.  The message is limited in length
  * to 63 bytes, the name characters are output as hex digits wrapped in []
diff --git a/pnggccrd.c b/pnggccrd.c
index 05233c7..e6560bc 100644
--- a/pnggccrd.c
+++ b/pnggccrd.c
@@ -6,7 +6,7 @@
  *     and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
  *     for Intel's performance analysis of the MMX vs. non-MMX code.
  *
- * libpng version 1.2.3rc6 - May 13, 2002
+ * libpng version 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * Copyright (c) 1998, Intel Corporation
diff --git a/pngget.c b/pngget.c
index 17c79f9..cd9350a 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngmem.c b/pngmem.c
index ec4af6f..7dbe403 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngpread.c b/pngpread.c
index dd26afa..452854d 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngread.c b/pngread.c
index 3aca69d..7d672a1 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -795,7 +795,7 @@
  * not called png_set_interlace_handling(), the display_row buffer will
  * be ignored, so pass NULL to it.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.3rc6
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.3
  */
 
 void PNGAPI
@@ -844,7 +844,7 @@
  * only call this function once.  If you desire to have an image for
  * each pass of a interlaced image, use png_read_rows() instead.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.3rc6
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.3
  */
 void PNGAPI
 png_read_image(png_structp png_ptr, png_bytepp image)
diff --git a/pngrio.c b/pngrio.c
index bbd63e6..7e6ed2a 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrtran.c b/pngrtran.c
index 3542c6d..b4dd25d 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrutil.c b/pngrutil.c
index 2ff4007..4432238 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngset.c b/pngset.c
index 50371c1..7771080 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index 4496733..c67672f 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1512,4 +1512,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_3rc6 your_png_h_is_not_version_1_2_3rc6;
+typedef version_1_2_3 your_png_h_is_not_version_1_2_3;
diff --git a/pngtrans.c b/pngtrans.c
index fc366c8..fd34bf6 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngvcrd.c b/pngvcrd.c
index eb5d640..eafa5c3 100644
--- a/pngvcrd.c
+++ b/pngvcrd.c
@@ -2,7 +2,7 @@
  *
  * For Intel x86 CPU and Microsoft Visual C++ compiler
  *
- * libpng version 1.2.3rc6 - May 13, 2002
+ * libpng version 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * Copyright (c) 1998, Intel Corporation
diff --git a/pngwio.c b/pngwio.c
index ac7ae34..7a46719 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngwrite.c b/pngwrite.c
index bf8f8fd..bc302be 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngwtran.c b/pngwtran.c
index c75e3f9..07ebaca 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngwutil.c b/pngwutil.c
index ec36d64..f84f931 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.2.3rc6 - May 13, 2002
+ * libpng 1.2.3 - May 21, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2002 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/projects/msvc/README.txt b/projects/msvc/README.txt
index ea0a4f6..d215d78 100644
--- a/projects/msvc/README.txt
+++ b/projects/msvc/README.txt
@@ -1,5 +1,5 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for
-libpng 1.2.3rc6 (May 13, 2002) and zlib
+libpng 1.2.3 (May 21, 2002) and zlib
 
 Copyright (C) 2000 Simon-Pierre Cadieux
 For conditions of distribution and use, see copyright notice in png.h
@@ -9,14 +9,19 @@
 
 To build:
 
-1) On the main menu Select "Build|Set Active configuration". 
+0) On the main menu, select "File | Open Workspace" and then
+   select "libpng.dsw".
+
+1) On the main menu Select "Build | Set Active configuration". 
    Among the configurations beginning with "libpng" select the 
    one you wish to build (the corresponding "zlib" configuration
    will be built automatically).
 
-2) Select "Build|Clean"
+2) Select "Build | Clean"
 
-3) Select "Build|Rebuild All"
+3) Select "Build | Rebuild All".  Ignore warning messages about
+   not being able to find certain include files (e.g., m68881.h,
+   alloc.h).
 
 4) Look in the appropriate "win32" subdirectories for both "zlib"
    and "libpng" binaries.
@@ -25,13 +30,15 @@
 libpng and zlib libraries:
 
    libpng12.dll          (default version, currently C code only)
-   libpng12.dll         (C + Assembler version)
-   libpng12.dll         (C + Assembler debug version)
-   libpng12.dll         (C code debug version)
+   libpng12a.dll         (C + Assembler version)
+   libpng12b.dll         (C + Assembler debug version)
+   libpng12d.dll         (C code debug version)
+   libpng12vb.dll       (version for VB, uses "stdcall" protocol)
    libpng12[c,e-m].dll   (reserved for official versions) 
    libpng12[n-z].dll     (available for private versions)
    zlib.dll             (default version, currently C code only)
    zlibd.dll            (debug version)
+   zlibvb.dll           (version for Visual Basic, uses "stdcall" protocol)
 
 If you change anything in libpng, or select different compiler settings,
 please change the library name to an unreserved name, and define
@@ -45,3 +52,6 @@
 For a list of files that are redistributable in Visual C++ 6.0, see
 Common\Redist\Redist.txt on Disc 1 of the Visual C++ 6.0 product CDs. 
 
+5) For an example workspace that builds an application using the resulting
+   DLLs, go to Libpng's contrib\msvctest directory and use it to build
+   and run "pngtest".
diff --git a/projects/msvc/png32ms.def b/projects/msvc/png32ms.def
index dfe6103..233957d 100644
--- a/projects/msvc/png32ms.def
+++ b/projects/msvc/png32ms.def
@@ -6,7 +6,7 @@
 DESCRIPTION "PNG image compression library for Windows"
 
 EXPORTS
-;Version 1.2.3rc6
+;Version 1.2.3
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3
diff --git a/projects/netware.txt b/projects/netware.txt
index 2833858..806a954 100644
--- a/projects/netware.txt
+++ b/projects/netware.txt
@@ -1,6 +1,6 @@
 A set of project files is available for Netware.  Get
-libpng-1.2.3rc6-project-netware.zip from a libpng distribution
+libpng-1.2.3-project-netware.zip from a libpng distribution
 site such as http://libpng.sourceforge.net
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.3rc6-project-netware.zip"
+"unzip -a libpng-1.2.3-project-netware.zip"
diff --git a/projects/wince.txt b/projects/wince.txt
index 34b1dd4..e89b346 100644
--- a/projects/wince.txt
+++ b/projects/wince.txt
@@ -1,6 +1,6 @@
 A set of project files is available for WinCE.  Get
-libpng-1.2.3rc6-project-wince.zip from a libpng distribution
+libpng-1.2.3-project-wince.zip from a libpng distribution
 site such as http://libpng.sourceforge.net
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.3rc6-project-wince.zip"
+"unzip -a libpng-1.2.3-project-wince.zip"
diff --git a/scripts/libpng-config-body.in b/scripts/libpng-config-body.in
old mode 100644
new mode 100755
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
old mode 100644
new mode 100755
index 5196c43..ebbfe7f
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.2.3rc6
+version=1.2.3
 prefix=""
 cppflags=""
 cflags=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 4024c6e..81e3710 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -6,6 +6,6 @@
 
 Name: libpng12
 Description: Loads and saves PNG files
-Version: 1.2.3rc6
+Version: 1.2.3
 Libs: -L${libdir} -lpng12 -lz -lm
 Cflags: -I${includedir}/libpng12
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 25db689..58efd83 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -33,7 +33,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
@@ -51,6 +51,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -110,68 +115,63 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm $(DI)/libpng
+	(cd $(DI); ln -f -s $(LIBNAME) libpng; \
 	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig
+	-@/bin/rm -f $(DL)/pkgconfig/libpng12.pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/libpng12.pc
+	chmod 644 $(DL)/pkgconfig/libpng12.pc
+	(cd $(DL)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng12-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/libpng12-config
-	chmod 755 $(DESTDIR)$(BINPATH)/libpng12-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf libpng12-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/libpng12-config
+	cp libpng-config $(DB)/libpng12-config
+	chmod 755 $(DB)/libpng12-config
+	(cd $(DB); ln -sf libpng12-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 323f547..d6c89cd 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -33,7 +33,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
@@ -51,6 +51,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -110,68 +115,63 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm $(DI)/libpng
+	(cd $(DI); ln -f -s $(LIBNAME) libpng; \
 	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index 8578515..f5a75a5 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -16,10 +16,8 @@
 RANLIB = ranlib
 RM = rm -f
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc4
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
@@ -36,6 +34,9 @@
 # you execute make install.
 DESTDIR=
 
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+
 CDEBUG = -g -DPNG_DEBUG=5
 LDDEBUG =
 CRELEASE = -O2
@@ -67,17 +68,16 @@
 	$(LD) -o $@ pngtest$(O) $(LDFLAGS)
 
 install: libpng.a
-	-@if [ ! -d $(DESTDIR)$(INCPATH)  ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/libpng  ]; then mkdir \
-	$(DESTDIR)$(INCPATH)/libpng; fi
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@rm $(DESTDIR)$(INCPATH)/png.h
-	-@rm $(DESTDIR)$(INCPATH)/pngconf.h
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/libpng
-	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h \
-	$(DESTDIR)$(INCPATH)/libpng/pngconf.h
-	(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
-	cp libpng.a $(DESTDIR)$(LIBPATH)
+	-@if [ ! -d $(DI)  ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/libpng  ]; then mkdir $(DI)/libpng; fi
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@rm $(DI)/png.h
+	-@rm $(DI)/pngconf.h
+	cp png.h pngconf.h $(DI)/libpng
+	chmod 644 $(DI)/libpng/png.h \
+	$(DI)/libpng/pngconf.h
+	(cd $(DI); ln -f -s libpng/* .)
+	cp libpng.a $(DL)
 
 clean:
 	/bin/rm -f *.o libpng.a pngtest pngout.png
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index 5f7e4bc..90793c4 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -11,10 +11,8 @@
 ZLIBLIB=/usr/local/lib
 ZLIBINC=/usr/local/include
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 ALIGN=
@@ -52,6 +50,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 LIBNAME=libpng12
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
@@ -100,67 +103,62 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index 6e78b92..d406afb 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -1,15 +1,16 @@
 # makefile for cygwin on x86
-#   builds both dll (with import lib) and static lib versions
+#   Builds both dll (with import lib) and static lib versions
 #   of the library, and builds two copies of pngtest: one
 #   statically linked and one dynamically linked.
 #
+# Copyright (C) 2002 Soren Anderson, Charles Wilson, 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
 # For conditions of distribution and use, see copyright notice in png.h
 
-# this makefile intends to support building outside the src directory
-# if desired. when invoking it, specify an argument to SRCDIR on the
+# This makefile intends to support building outside the src directory
+# if desired. When invoking it, specify an argument to SRCDIR on the
 # command line that points to the top of the directory where your source
 # is located.
 
@@ -19,7 +20,7 @@
 SRCDIR = .
 endif
 
-# override DESTDIR= on the make install command line to easily support
+# Override DESTDIR= on the make install command line to easily support
 # installing into a temporary location.  Example:
 #
 #    make install DESTDIR=/tmp/build/libpng
@@ -30,12 +31,9 @@
 
 DESTDIR=
 
-# cosmetic: shortened strings:
-S =$(SRCDIR)
-D =$(DESTDIR)
-
 # To enable assembler optimizations, add '-DPNG_USE_PNGGCCRD' to
-# $CFLAGS, and include pnggccrd.o in $OBJS, below.
+# $CFLAGS, and include pnggccrd.o in $OBJS, below, and in the dependency
+# list at the bottom of this makefile.
 
 CC=gcc
 ifdef MINGW
@@ -43,7 +41,7 @@
 MINGW_LDFLAGS=-mno-cygwin -L/usr/lib/mingw
 endif
 
-# where "make install" puts libpng.a, libpng.so*, png.h, and pngconf.h
+# Where "make install" puts libpng*.a, *png*.dll, png.h, and pngconf.h
 ifndef prefix
 prefix=/usr
 $(warning You haven't specified a 'prefix=' location. Defaulting to "/usr")
@@ -81,7 +79,7 @@
 LIBNAME = libpng12
 PNGMAJ = 0
 PNGDLL = 12
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(PNGDLL).dll
@@ -107,6 +105,13 @@
 MAN3PATH=$(MANPATH)/man3
 MAN5PATH=$(MANPATH)/man5
 
+# cosmetic: shortened strings:
+S =$(SRCDIR)
+D =$(DESTDIR)
+DB =$(D)/$(BINPATH)
+DI =$(D)/$(INCPATH)
+DL =$(D)/$(LIBPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o # pnggccrd.o
@@ -123,7 +128,7 @@
 
 all: all-static all-shared libpng.pc libpng-config
 
-# make this to verify that "make [...] install" will do what you want.
+# Make this to verify that "make [...] install" will do what you want.
 buildsetup-tell:
 	@echo  VPATH is set to: \"$(VPATH)\"
 	@echo  prefix is set to: \"$(prefix)\"
@@ -134,9 +139,10 @@
 libpng.pc: scripts/libpng.pc.in
 	@echo -e Making pkg-config file for this libpng installation..'\n' \
            using PREFIX=\"$(prefix)\"'\n'
-	cat $(S)/scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat $(S)/scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
+	   sed -e s/-lm// > libpng.pc
 
-libpng-config: scripts/libpng-config.in
+libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
 	@echo -e Making $(LIBNAME) libpng-config file for this libpng \
  installation..'\n' using PREFIX=\"$(prefix)\"'\n'
 	( cat $(S)/scripts/libpng-config-head.in; \
@@ -155,15 +161,15 @@
 
 pnggccrd.o: pnggccrd.c png.h pngconf.h
 	@echo ""
-	@echo '    You can ignore the single "control reaches end of non-void function"'
-	@echo '    warning and multiple "<variable> defined but not used" warnings:'
+	@echo '    You can ignore the "control reaches end of non-void function"'
+	@echo '    warning and "<variable> defined but not used" warnings:'
 	@echo ""
 	$(CC) -c $(CFLAGS) -o $@ $<
 
 pnggccrd.pic.o:	pnggccrd.c png.h pngconf.h
 	@echo ""
-	@echo '    You can ignore the single "control reaches end of non-void function"'
-	@echo '    warning and multiple "<variable> defined but not used" warnings:'
+	@echo '    You can ignore the "control reaches end of non-void function"'
+	@echo '    warning and "<variable> defined but not used" warnings:'
 	@echo ""
 	$(CC) -c $(CFLAGS) -DPNG_BUILD_DLL -o $@ $<
 
@@ -199,62 +205,56 @@
 	./pngtest $(S)/pngtest.png
 
 install-static: $(STATLIB) install-headers install-man
-	-@if [ ! -d $(D)$(LIBPATH) ]; then $(MKDIR) $(D)$(LIBPATH); fi
-	install -m 644 $(STATLIB) $(D)$(LIBPATH)/$(LIBNAME).a
-	-@rm -f $(D)$(LIBPATH)/$(STATLIB)
-	(cd $(D)$(LIBPATH); ln -sf $(LIBNAME).a $(STATLIB))
+	-@if [ ! -d $(DL) ]; then $(MKDIR) $(DL); fi
+	install -m 644 $(STATLIB) $(DL)/$(LIBNAME).a
+	-@rm -f $(DL)/$(STATLIB)
+	(cd $(DL); ln -sf $(LIBNAME).a $(STATLIB))
 
 install-shared: $(SHAREDLIB) libpng.pc libpng-config install-headers install-man
-	-@if [ ! -d $(D)$(LIBPATH) ]; then $(MKDIR) $(D)$(LIBPATH); fi
-	-@if [ ! -d $(D)$(BINPATH) ]; then $(MKDIR) $(D)$(BINPATH); fi
-	-@if [ ! -d $(D)$(LIBPATH)/pkgconfig ]; then \
-           $(MKDIR) $(D)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(D)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(D)$(LIBPATH)/pkgconfig/libpng.pc
-	install -m 644 $(IMPLIB) $(D)$(LIBPATH)/$(LIBNAME).dll.a
-	-@rm -f $(D)$(LIBPATH)/$(IMPLIB)
-	(cd $(D)$(LIBPATH); ln -sf $(LIBNAME).dll.a $(IMPLIB))
-	install -s -m 755 $(SHAREDLIB) $(D)$(BINPATH)
-	install -m 644 libpng.pc $(D)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(D)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL) ]; then $(MKDIR) $(DL); fi
+	-@if [ ! -d $(DB) ]; then $(MKDIR) $(DB); fi
+	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR) $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	install -m 644 $(IMPLIB) $(DL)/$(LIBNAME).dll.a
+	-@rm -f $(DL)/$(IMPLIB)
+	(cd $(DL); ln -sf $(LIBNAME).dll.a $(IMPLIB))
+	install -s -m 755 $(SHAREDLIB) $(DB)
+	install -m 644 libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-headers:
-	-@if [ ! -d $(D)$(INCPATH) ]; then \
-          $(MKDIR) $(D)$(INCPATH); fi
-	-@if [ ! -d $(D)$(INCPATH)/$(LIBNAME) ]; then \
-          $(MKDIR) $(D)$(INCPATH)/$(LIBNAME); fi
-	-@rm -f $(D)$(INCPATH)/png.h
-	-@rm -f $(D)$(INCPATH)/pngconf.h
-	install -m 644 $(S)/png.h $(S)/pngconf.h $(D)$(INCPATH)/$(LIBNAME)
-	-@rm -f $(D)$(INCPATH)/libpng
-	(cd $(D)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then $(MKDIR) $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR) $(DI)/$(LIBNAME); fi
+	-@rm -f $(DI)/png.h
+	-@rm -f $(DI)/pngconf.h
+	install -m 644 $(S)/png.h $(S)/pngconf.h $(DI)/$(LIBNAME)
+	-@rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-man:
-	-@if [ ! -d $(D)$(MAN3PATH) ]; then \
-          $(MKDIR) $(D)$(MAN3PATH); fi
-	-@if [ ! -d $(D)$(MAN5PATH) ]; then \
-          $(MKDIR) $(D)$(MAN5PATH); fi
+	-@if [ ! -d $(D)$(MAN3PATH) ]; then $(MKDIR) $(D)$(MAN3PATH); fi
+	-@if [ ! -d $(D)$(MAN5PATH) ]; then $(MKDIR) $(D)$(MAN5PATH); fi
 	install -m 644 $(S)/libpngpf.3 $(S)/libpng.3 $(D)$(MAN3PATH)
 	install -m 644 $(S)/png.5 $(D)$(MAN5PATH)
 
 install-config: libpng-config
-	-@if [ ! -d $(D)$(BINPATH) ]; then \
-           mkdir $(D)$(BINPATH); fi
-	-@/bin/rm -f $(D)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(D)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(D)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(D)$(BINPATH)/$(LIBNAME)-config
-	(cd $(D)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
-# run this to verify that a future `configure' run will pick up the settings
+# Run this to verify that a future `configure' run will pick up the settings
 # you want.
 test-config-install: SHELL=/bin/bash
-test-config-install: $(D)$(BINPATH)/libpng-config
+test-config-install: $(DB)/libpng-config
 	@echo -e Testing libpng-config functions...'\n'
 	@ for TYRA in LDFLAGS CPPFLAGS CFLAGS LIBS VERSION; \
    do \
-    printf "(%d)\t %s = %s\n" $$(($$gytiu + 1)) $$TYRA \
-    "$$($(D)$(BINPATH)/libpng-config `echo --$$TYRA |tr '[:upper:]' '[:lower:]'`)"; \
+    printf "(%d)\t %10s =%s\n" $$(($$gytiu + 1)) $$TYRA \
+    "$$($(DB)/libpng-config `echo --$$TYRA |tr '[:upper:]' '[:lower:]'`)"; \
     gytiu=$$(( $$gytiu + 1 )); \
    done
 
@@ -295,5 +295,3 @@
 
 
 
-
-
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 4e8901e..05388ce 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -17,15 +17,13 @@
 
 CC=cc
 CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
 
 #RANLIB=echo
 RANLIB=ranlib
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -44,6 +42,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -83,7 +86,7 @@
 
 $(LIBNAME).$(PNGVER).dylib: $(OBJSDLL)
 	$(CC) -dynamiclib \
-	 -install_name $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGMAJ).dylib \
+	 -install_name $(DL)/$(LIBNAME).$(PNGMAJ).dylib \
 	 -current_version $(PNGMIN) -compatibility_version $(PNGMIN) \
 	 -o $(LIBNAME).$(PNGVER).dylib \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
@@ -95,67 +98,62 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).dylib libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGMAJ)*.dylib
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).dylib
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.dylib
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.3.dylib
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.3.*.dylib
-	cp $(LIBNAME).$(PNGVER).dylib $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGVER).dylib
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).$(PNGMAJ)*.dylib
+	-@/bin/rm -f $(DL)/$(LIBNAME).dylib
+	-@/bin/rm -f $(DL)/libpng.dylib
+	-@/bin/rm -f $(DL)/libpng.3.dylib
+	-@/bin/rm -f $(DL)/libpng.3.*.dylib
+	cp $(LIBNAME).$(PNGVER).dylib $(DL)
+	chmod 755 $(DL)/$(LIBNAME).$(PNGVER).dylib
+	(cd $(DL); \
 	ln -sf $(LIBNAME).$(PNGVER).dylib libpng.dylib; \
 	ln -sf $(LIBNAME).$(PNGVER).dylib libpng.3.dylib; \
 	ln -sf $(LIBNAME).$(PNGVER).dylib libpng.3.$(PNGMIN).dylib; \
 	ln -sf $(LIBNAME).$(PNGVER).dylib $(LIBNAME).$(PNGMAJ).dylib; \
 	ln -sf $(LIBNAME).$(PNGMAJ).dylib $(LIBNAME).dylib)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 1dbf3b8..5c6a9d9 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -20,16 +20,19 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
 #ZLIBINC=/usr/local/include
 ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -79,67 +82,62 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index 717e755..d7d5fae 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -1,107 +1,48 @@
 # makefile for libpng under FreeBSD
 # Copyright (C) 2002 Glenn Randers-Pehrson and Andrey A. Chernov
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
-.include <bsd.own.mk>
+PREFIX?=        /usr/local
+SHLIB_VER?=     5
+
+LIB=		png
+SHLIB_MAJOR=	${SHLIB_VER}
+SHLIB_MINOR=	0
+NOPROFILE=	YES
+NOOBJ=          YES
 
 # where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-MANPATH=$(prefix)/man
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location.  Example:
-#
-#    make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, that location must already exist before
-# you execute make install.
-DESTDIR=
-
-PNGMAJ= 5
-.if (${OBJFORMAT} == "elf")
-PNGVER= $(PNGMAJ)
-.else
-PNGMIN= 0
-PNGVER= $(PNGMAJ).$(PNGMIN)
-.endif
+DESTDIR=	${PREFIX}
+LIBDIR=		/lib
+INCS=		png.h pngconf.h
+INCSDIR=	/include/libpng
+INCDIR=		${INCSDIR}		# for 4.x bsd.lib.mk
+MAN=		libpng.3 libpngpf.3 png.5
+MANDIR=		/man/man
+SYMLINKS=       libpng/png.h ${INCSDIR}/../png.h \
+		libpng/pngconf.h ${INCSDIR}/../pngconf.h
+LDADD+=         -lm -lz
+DPADD+=         ${LIBM} ${LIBZ}
 
 CFLAGS+= -I. -DPNG_USE_PNGGCCRD
 .if (${MACHINE_ARCH} != "i386")
 CFLAGS+= -DPNG_NO_ASSEMBLER_CODE
 .endif
-LDFLAGS+=-L. -lpng -lz -lm -static
 
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
-	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
-
-.SUFFIXES: .c .so .o
-
-.c.so:
-	${CC} ${CFLAGS} -fPIC -DPIC -o $@ -c $<
-
-all: libpng.a libpng.so.${PNGVER} pngtest
-
-libpng.a: $(OBJS)
-	ar rc $@  $(OBJS)
-	$(RANLIB) $@
-
-libpng.so.${PNGVER}: $(OBJS:S/o$/so/g)
-.if (${OBJFORMAT} == "elf")
-	${CC} -shared -Wl,-x,-soname,$@ -o $@ $(OBJS:S/o$/so/g) -lz -lm
-.else
-	${CC} -shared -Wl,-x -o $@ $(OBJS:S/o$/so/g) -lz -lm
-.endif
+SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
+	pngwtran.c pngmem.c pngerror.c pngpread.c pnggccrd.c
 
 pngtest: pngtest.o libpng.a
-	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+	${CC} ${CFLAGS} -L. -static -o pngtest pngtest.o -lpng -lz -lm
+
+CLEANFILES= pngtest pngtest.o pngout.png
 
 test: pngtest
 	./pngtest
 
-install: libpng.a libpng.so.${PNGVER}
-	-@mkdir $(DESTDIR)$(INCPATH)/libpng
-	${INSTALL} -o ${INCOWN} -g ${INCGRP} -m ${INCMODE} \
-		png.h pngconf.h $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); rm -f png.h pngconf.h; ln -sf libpng/*.h .)
-	${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
-		libpng.a libpng.so.${PNGVER} $(DESTDIR)$(LIBPATH)
-	$(RANLIB) $(DESTDIR)$(LIBPATH)/libpng.a
-	ln -sf libpng.so.${PNGVER} $(DESTDIR)$(LIBPATH)/libpng.so
-	/sbin/ldconfig -R
-	${INSTALL} -o ${MANOWN} -g ${MANGRP} -m ${MANMODE} \
-		libpng.3 libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	${INSTALL} -o ${MANOWN} -g ${MANGRP} -m ${MANMODE} \
-		png.5 $(DESTDIR)$(MANPATH)/man5
-
-clean:
-	rm -f *.o *.so libpng.a libpng.so.${PNGVER} pngtest pngout.png
-
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock:
 	chmod a-w *.[ch35] $(DOCS) scripts/*
 
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h
-pngerror.o: png.h pngconf.h
-pngrio.o: png.h pngconf.h
-pngwio.o: png.h pngconf.h
-pngmem.o: png.h pngconf.h
-pngset.o: png.h pngconf.h
-pngget.o: png.h pngconf.h
-pngread.o: png.h pngconf.h
-pngrtran.o: png.h pngconf.h
-pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
-pngtrans.o: png.h pngconf.h
-pngwrite.o: png.h pngconf.h
-pngwtran.o: png.h pngconf.h
-pngwutil.o: png.h pngconf.h
-pngpread.o: png.h pngconf.h
-pnggccrd.o: png.h pngconf.h
-
+.include <bsd.lib.mk>
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index a7cac2c..abde79c 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -15,7 +15,7 @@
 
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=gcc
@@ -75,6 +75,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
@@ -139,67 +144,62 @@
 	./pngtest-static
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 5e8bc27..6f78470 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -26,16 +26,14 @@
 
 CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 RANLIB=ranlib
 #RANLIB=echo
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -54,6 +52,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -102,68 +105,63 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then \
-	mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).sl.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).sl
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).sl.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).sl.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).sl
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).sl.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).sl.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).sl.$(PNGVER) $(LIBNAME).sl.$(PNGMAJ); \
 	ln -sf $(LIBNAME).sl.$(PNGMAJ) $(LIBNAME).sl)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then mkdir \
-	$(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir \
+	$(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index 9c9b9cc..4a30710 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -16,10 +16,8 @@
 
 RANLIB=ranlib
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -40,6 +38,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -88,67 +91,62 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).sl.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).sl
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.sl
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.sl.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.sl.3.*
-	cp $(LIBNAME).sl.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).sl.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).sl
+	-@/bin/rm -f $(DL)/libpng.sl
+	-@/bin/rm -f $(DL)/libpng.sl.3
+	-@/bin/rm -f $(DL)/libpng.sl.3.*
+	cp $(LIBNAME).sl.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).sl.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).sl.$(PNGVER) $(LIBNAME).sl.$(PNGMAJ); \
 	ln -sf $(LIBNAME).sl.$(PNGMAJ) $(LIBNAME).sl)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 8ab6e77..e8637ac 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -5,7 +5,7 @@
 
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=gcc
@@ -54,6 +54,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -112,67 +117,63 @@
 	./pngtest-static
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then mkdir \
-	$(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir \
+	$(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.macosx b/scripts/makefile.macosx
index b8c916a..16c3cce 100644
--- a/scripts/makefile.macosx
+++ b/scripts/makefile.macosx
@@ -17,7 +17,7 @@
 CC=cc
 
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CFLAGS=-fno-common -I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
@@ -42,6 +42,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 #RANLIB=echo
 RANLIB=ranlib
 
@@ -81,35 +86,34 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -f -s $(LIBNAME) libpng; \
 	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
 	-@/bin/rm -f \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGMAJ)*.$(SHAREDLIB_POSTFIX)
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(SHAREDLIB_POSTFIX)
+	$(DL)/$(LIBNAME).$(PNGMAJ)*.$(SHAREDLIB_POSTFIX)
+	-@/bin/rm -f $(DL)/$(LIBNAME).$(SHAREDLIB_POSTFIX)
 	-@/bin/rm -f libpng.$(SHARED_POSTFIX)
 	-@/bin/rm -f libpng.3.$(SHARED_POSTFIX)
 	-@/bin/rm -f libpng.3.*.$(SHARED_POSTFIX)
-	cp $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
-	(cd $(DESTDIR)$(LIBPATH); \
+	cp $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
+	(cd $(DL); \
 	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) \
 	libpng.$(SHARED_POSTFIX); \
 	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) \
@@ -120,35 +124,31 @@
 	$(LIBNAME).$(PNGMAJ).$(SHAREDLIB_POSTFIX); \
 	ln -f -s $(LIBNAME).$(PNGMAJ).$(SHAREDLIB_POSTFIX) \
 	$(LIBNAME).$(SHAREDLIB_POSTFIX))
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index cbb0a62..6f47a5b 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -13,7 +13,7 @@
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.3rc6
+SHLIB_MINOR=	1.2.3
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index eea55f8..7056478 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -13,7 +13,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.3rc6
+SHLIB_MINOR=	1.2.3
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index fdd830d..0edaee0 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -7,7 +7,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.3rc4
+SHLIB_MINOR=	1.2.3
 
 LIB=	png
 SRCS=	png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 08d556d..061e3e2 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -18,15 +18,13 @@
 ZLIBINC=../zlib
 
 CFLAGS= -dy -belf -I$(ZLIBINC) -O3
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 #RANLIB=ranlib
 RANLIB=echo
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -45,6 +43,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -93,70 +96,65 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/pngconf.h
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	-@/bin/rm -f $(DI)/png.h
+	-@/bin/rm -f $(DI)/pngconf.h
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -f -s $(LIBNAME) libpng; \
 	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index 985a355..d1c6e7e 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -5,18 +5,6 @@
 
 # where make install puts libpng.a and png.h
 prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location.  Example:
-#
-#    make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, that location must already exist before
-# you execute make install.
-DESTDIR=
 
 # Where the zlib library and include files are located
 ZLIBLIB=/usr/local/lib32
@@ -38,7 +26,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBS=$(LIBNAME).so.$(PNGVER)
 INCPATH=$(prefix)/include
@@ -56,6 +44,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 RANLIB=echo
 #RANLIB=ranlib
 
@@ -97,68 +90,63 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; \
 	ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index e8b6491..8c0d557 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -31,7 +31,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 RANLIB=echo
@@ -54,6 +54,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = pnggccrd.o png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -93,68 +98,63 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -sf $(LIBNAME) libpng; \
 	ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index a0675d7..249b168 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -28,15 +28,13 @@
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 #CFLAGS=-I$(ZLIBINC) -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5
 CFLAGS=-I$(ZLIBINC) -O3
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 #RANLIB=ranlib
 RANLIB=echo
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -55,6 +53,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -114,68 +117,64 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng)
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -f -s $(LIBNAME) libpng)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DI); ln -f -s $(LIBNAME) libpng; \
 	ln -f -s $(LIBNAME)/* .)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then mkdir \
-	$(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir \
+	$(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 3e66284..6e678b7 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -24,15 +24,13 @@
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -Wall -O3 \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 #RANLIB=ranlib
 RANLIB=echo
 
-# read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
-# have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.3rc6
+PNGMIN = 1.2.3
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -51,6 +49,11 @@
 # you execute make install.
 DESTDIR=
 
+DB=$(DESTDIR)/$(BINPATH)
+DI=$(DESTDIR)/$(INCPATH)
+DL=$(DESTDIR)/$(LIBPATH)
+DM=$(DESTDIR)/$(MANPATH)
+
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -111,68 +114,63 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
-	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
-	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
-	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
-	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
-	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
-	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DI)/$(LIBNAME)
+	chmod 644 $(DI)/$(LIBNAME)/png.h \
+	$(DI)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
+	-@/bin/rm -f $(DI)/libpng
+	(cd $(DI); ln -f -s $(LIBNAME) libpng; \
 	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
-	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	chmod 644 $(DL)/$(LIBNAME).a
+	-@/bin/rm -f $(DL)/libpng.a
+	(cd $(DL); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc
-	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
-	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
-	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(DESTDIR)$(LIBPATH); \
+	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DL)/$(LIBNAME).so
+	-@/bin/rm -f $(DL)/libpng.so
+	-@/bin/rm -f $(DL)/libpng.so.3
+	-@/bin/rm -f $(DL)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DL)
+	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DL); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ))
-	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
-	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/pkgconfig/libpng.pc
-	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
-	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
+	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
+	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
+	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DESTDIR)$(MANPATH) ]; then mkdir $(DESTDIR)$(MANPATH); fi
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man3 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man3; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpng.3
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man3/libpngpf.3
-	cp libpng.3 $(DESTDIR)$(MANPATH)/man3
-	cp libpngpf.3 $(DESTDIR)$(MANPATH)/man3
-	-@if [ ! -d $(DESTDIR)$(MANPATH)/man5 ]; then \
-	mkdir $(DESTDIR)$(MANPATH)/man5; fi
-	-@/bin/rm -f $(DESTDIR)$(MANPATH)/man5/png.5
-	cp png.5 $(DESTDIR)$(MANPATH)/man5
+	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
+	-@/bin/rm -f $(DM)/man3/libpng.3
+	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
+	-@/bin/rm -f $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then \
-	mkdir $(DESTDIR)$(BINPATH); fi
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/libpng-config
-	-@/bin/rm -f $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	cp libpng-config $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	chmod 755 $(DESTDIR)$(BINPATH)/$(LIBNAME)-config
-	(cd $(DESTDIR)$(BINPATH); ln -sf $(LIBNAME)-config libpng-config)
+	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
+	-@/bin/rm -f $(DB)/libpng-config
+	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	chmod 755 $(DB)/$(LIBNAME)-config
+	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
diff --git a/scripts/pngdef.pas b/scripts/pngdef.pas
index b60afc7..c39c2f0 100644
--- a/scripts/pngdef.pas
+++ b/scripts/pngdef.pas
@@ -7,7 +7,7 @@
 interface
 
 const
-  PNG_LIBPNG_VER_STRING = '1.2.3rc6';
+  PNG_LIBPNG_VER_STRING = '1.2.3';
   PNG_LIBPNG_VER        =  10203;
 
 type
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 9f0540e..2ad1e42 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.3rc6
+; Version 1.2.3
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"