diff --git a/ANNOUNCE b/ANNOUNCE
index 04830f3..a288e17 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.19beta16 - June 19, 2007
+Libpng 1.2.19beta17 - June 20, 2007
 
 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.
@@ -9,32 +9,32 @@
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.19beta16.tar.gz
-   libpng-1.2.19beta16.tar.bz2
+   libpng-1.2.19beta17.tar.gz
+   libpng-1.2.19beta17.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.19beta16-no-config.tar.gz
-   libpng-1.2.19beta16-no-config.tar.bz2
+   libpng-1.2.19beta17-no-config.tar.gz
+   libpng-1.2.19beta17-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1219b16.zip
-   lp1219b16.tar.bz2
+   lp1219b17.zip
+   lp1219b17.tar.bz2
 
 Project files
 
-   libpng-1.2.19beta16-project-netware.zip
-   libpng-1.2.19beta16-project-wince.zip
+   libpng-1.2.19beta17-project-netware.zip
+   libpng-1.2.19beta17-project-wince.zip
 
 Other information:
 
-   libpng-1.2.19beta16-README.txt
-   libpng-1.2.19beta16-KNOWNBUGS.txt
-   libpng-1.2.19beta16-LICENSE.txt
-   libpng-1.2.19beta16-Y2K-compliance.txt
+   libpng-1.2.19beta17-README.txt
+   libpng-1.2.19beta17-KNOWNBUGS.txt
+   libpng-1.2.19beta17-LICENSE.txt
+   libpng-1.2.19beta17-Y2K-compliance.txt
 
 Changes since the last public release (1.2.18):
 
@@ -97,12 +97,16 @@
 version 1.2.19beta15 [June 17, 2007]
   Revised pnggccrd.c.
 
-version 1.2.19beta16 [June 19, 2007]
+version 1.2.19beta16 [June 18, 2007]
   Revised pnggccrd.c again.
   Updated contrib/gregbook.
-  Changed '#include "$srcdir/pnggccrd.c"' 'include "$srcdir/pnggccrd.c"'
+  Changed '#include "pnggccrd.c"' to 'include "$srcdir/pnggccrd.c"'
     in configure.ac
 
+version 1.2.19beta17 [June 20, 2007]
+  Revised many of the makefiles, to set -DPNG_NO_MMX_CODE where needed
+    and to not use -O3 unless -DPNG_NO_MMX_CODE is also set.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 
 (subscription required; visit 
diff --git a/CHANGES b/CHANGES
index 7f7a545..eb66e0e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1790,12 +1790,16 @@
 version 1.2.19beta15 [June 17, 2007]
   Revised pnggccrd.c.
 
-version 1.2.19beta16 [June 19, 2007]
+version 1.2.19beta16 [June 18, 2007]
   Revised pnggccrd.c again.
   Updated contrib/gregbook.
-  Changed '#include "$srcdir/pnggccrd.c"' 'include "$srcdir/pnggccrd.c"'
+  Changed '#include "pnggccrd.c"' to 'include "$srcdir/pnggccrd.c"'
     in configure.ac
 
+version 1.2.19beta17 [June 20, 2007]
+  Revised many of the makefiles, to set -DPNG_NO_MMX_CODE where needed
+    and to not use -O3 unless -DPNG_NO_MMX_CODE is also set.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
diff --git a/INSTALL b/INSTALL
index 1e699b8..c971375 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.19beta16 - June 19, 2007
+Installing libpng version 1.2.19beta17 - June 20, 2007
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -44,7 +44,7 @@
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.19beta16" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.19beta17" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -101,14 +101,14 @@
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.19beta16)
+                       gcc, creates libpng12.so.0.1.2.19beta17)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.19beta16)
+                       (gcc, creates libpng12.so.0.1.2.19beta17)
  makefile.gcmmx    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.19beta16,
+                       (gcc, creates libpng12.so.0.1.2.19beta17,
                        uses assembler code tuned for Intel MMX platform)
  makefile.nommx    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.19beta16
+                       (gcc, creates libpng12.so.0.1.2.19beta17
                        does not use Intel MMX assembler code)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -131,14 +131,14 @@
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.19beta16)
+                       creates libpng12.so.0.1.2.19beta17)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.19beta16)
+                       creates libpng12.so.0.1.2.19beta17)
  makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.19beta16)
+                       creates libpng12.so.0.1.2.19beta17)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.19beta16)
+                       creates libpng12.so.0.1.2.19beta17)
  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
@@ -218,7 +218,7 @@
 scripts/makefile.* yourself, that is)
 
 
-CFLAGS="-Wall -O3 -funroll-loops \
+CFLAGS="-Wall -O -funroll-loops \
 -malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
 --with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
 
diff --git a/KNOWNBUG b/KNOWNBUG
index 89ad685..055f9a6 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.2.19beta16
+Known bugs in libpng version 1.2.19beta17
 
 1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
    reading interlaced PNG files, when assembler code is enabled but running
diff --git a/LICENSE b/LICENSE
index 5e4a8ef..b9681cc 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.19beta16, June 19, 2007, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.19beta17, June 20, 2007, are
 Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -106,4 +106,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 19, 2007
+June 20, 2007
diff --git a/README b/README
index 2c5b888..b9534c2 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.2.19beta16 - June 19, 2007 (shared library 12.0)
+README for libpng version 1.2.19beta17 - June 20, 2007 (shared library 12.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -190,11 +190,11 @@
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng12.so.0.1.2.19beta16)
+                            gcc, creates libpng12.so.0.1.2.19beta17)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.19beta16)
+                            (gcc, creates libpng12.so.0.1.2.19beta17)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.19beta16,
+                            (gcc, creates libpng12.so.0.1.2.19beta17,
                             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
@@ -216,12 +216,12 @@
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng12.so.0.1.2.19beta16)
+                            (gcc, creates libpng12.so.0.1.2.19beta17)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.19beta16)
+                            (gcc, creates libpng12.so.0.1.2.19beta17)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.19beta16)
+                            (gcc, creates libpng12.so.0.1.2.19beta17)
        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 790c79a..504081e 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      June 19, 2007
+      June 20, 2007
 
       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 1.2.19beta16 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.19beta17 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 cfca76e..2215ad7 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.61 for libpng 1.2.19beta16.
+# Generated by GNU Autoconf 2.61 for libpng 1.2.19beta17.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -728,8 +728,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.2.19beta16'
-PACKAGE_STRING='libpng 1.2.19beta16'
+PACKAGE_VERSION='1.2.19beta17'
+PACKAGE_STRING='libpng 1.2.19beta17'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -1405,7 +1405,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.2.19beta16 to adapt to many kinds of systems.
+\`configure' configures libpng 1.2.19beta17 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1475,7 +1475,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.2.19beta16:";;
+     short | recursive ) echo "Configuration of libpng 1.2.19beta17:";;
    esac
   cat <<\_ACEOF
 
@@ -1585,7 +1585,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.2.19beta16
+libpng configure 1.2.19beta17
 generated by GNU Autoconf 2.61
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1599,7 +1599,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.2.19beta16, which was
+It was created by libpng $as_me 1.2.19beta17, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   $ $0 $@
@@ -2269,7 +2269,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.2.19beta16'
+ VERSION='1.2.19beta17'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2440,7 +2440,7 @@
 
 
 
-PNGLIB_VERSION=1.2.19beta16
+PNGLIB_VERSION=1.2.19beta17
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
 PNGLIB_RELEASE=19
@@ -21119,7 +21119,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.2.19beta16, which was
+This file was extended by libpng $as_me 1.2.19beta17, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -21172,7 +21172,7 @@
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-libpng config.status 1.2.19beta16
+libpng config.status 1.2.19beta17
 configured by $0, generated by GNU Autoconf 2.61,
   with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/configure.ac b/configure.ac
index e4b3155..a375a13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.19beta16], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.19beta17], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.19beta16
+PNGLIB_VERSION=1.2.19beta17
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
 PNGLIB_RELEASE=19
diff --git a/libpng-1.2.19beta16.txt b/libpng-1.2.19beta17.txt
similarity index 99%
rename from libpng-1.2.19beta16.txt
rename to libpng-1.2.19beta17.txt
index 27de890..a9e2985 100644
--- a/libpng-1.2.19beta16.txt
+++ b/libpng-1.2.19beta17.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.19beta16 - June 19, 2007
+ libpng version 1.2.19beta17 - June 20, 2007
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2007 Glenn Randers-Pehrson
@@ -2921,13 +2921,13 @@
 
 IX. Y2K Compliance in libpng
 
-June 19, 2007
+June 20, 2007
 
 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 1.2.19beta16 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.19beta17 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/libpng.3 b/libpng.3
index e7fda5d..d0ee6d5 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "June 19, 2007"
+.TH LIBPNG 3 "June 20, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta16
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta17
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -410,7 +410,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.19beta16 - June 19, 2007
+ libpng version 1.2.19beta17 - June 20, 2007
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2007 Glenn Randers-Pehrson
@@ -3331,13 +3331,13 @@
 
 .SH IX. Y2K Compliance in libpng
 
-June 19, 2007
+June 20, 2007
 
 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 1.2.19beta16 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.19beta17 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
@@ -3526,7 +3526,7 @@
  1.2.17              13    10217  12.so.0.17[.0]
  1.0.26              10    10026  10.so.0.26[.0]
  1.2.18              13    10218  12.so.0.18[.0]
- 1.2.19beta1-16      13    10219  12.so.0.19[.0]
+ 1.2.19beta1-17      13    10219  12.so.0.19[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3582,7 +3582,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.19beta16 - June 19, 2007:
+Libpng version 1.2.19beta17 - June 20, 2007:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3603,7 +3603,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.19beta16, June 19, 2007, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.19beta17, June 20, 2007, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -3702,7 +3702,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 19, 2007
+June 20, 2007
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index cff8f05..0e6a9fc 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "June 19, 2007"
+.TH LIBPNGPF 3 "June 20, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta16
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta17
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index 55935e8..2411bc7 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "June 19, 2007"
+.TH PNG 5 "June 20, 2007"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 051c83f..b62329d 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -13,7 +13,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_19beta16 Your_png_h_is_not_version_1_2_19beta16;
+typedef version_1_2_19beta17 Your_png_h_is_not_version_1_2_19beta17;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -706,7 +706,7 @@
 png_get_copyright(png_structp png_ptr)
 {
    png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.19beta16 - June 19, 2007\n\
+   return ((png_charp) "\n libpng version 1.2.19beta17 - June 20, 2007\n\
    Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
diff --git a/png.h b/png.h
index acb7b18..7ced9e5 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.19beta16 - June 19, 2007
+ * libpng version 1.2.19beta17 - June 20, 2007
  * Copyright (c) 1998-2007 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.)
@@ -9,7 +9,7 @@
  * 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 1.2.19beta16 - June 19, 2007: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.19beta17 - June 20, 2007: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -150,7 +150,7 @@
  *    1.2.17                  13    10217  12.so.0.17[.0]
  *    1.0.26                  10    10026  10.so.0.26[.0]
  *    1.2.18                  13    10218  12.so.0.18[.0]
- *    1.2.19beta1-16          13    10219  12.so.0.19[.0]
+ *    1.2.19beta1-17          13    10219  12.so.0.19[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -180,7 +180,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.19beta16, June 19, 2007, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.19beta17, June 20, 2007, are
  * Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -292,13 +292,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    June 19, 2007
+ *    June 20, 2007
  *
  *    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 1.2.19beta16 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.19beta17 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
@@ -354,9 +354,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.19beta16"
+#define PNG_LIBPNG_VER_STRING "1.2.19beta17"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.19beta16 - June 19, 2007 (header)\n"
+   " libpng version 1.2.19beta17 - June 20, 2007 (header)\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -368,7 +368,7 @@
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  16
+#define PNG_LIBPNG_VER_BUILD  17
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -1407,7 +1407,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_2_19beta16;
+typedef png_structp version_1_2_19beta17;
 
 typedef png_struct FAR * FAR * png_structpp;
 
diff --git a/pngconf.h b/pngconf.h
index 3acd22a..a102309 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.19beta16 - June 19, 2007
+ * libpng version 1.2.19beta17 - June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngerror.c b/pngerror.c
index 52c05e3..0f61708 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pnggccrd.c b/pnggccrd.c
index 391b540..03ced6d 100644
--- a/pnggccrd.c
+++ b/pnggccrd.c
@@ -3,7 +3,7 @@
  *
  * For Intel x86 CPU (Pentium-MMX or later) and GNU C compiler.
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998 Intel Corporation
  * Copyright (c) 1999-2002,2007 Greg Roelofs
diff --git a/pngpread.c b/pngpread.c
index 2daa86e..746ab2e 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngread.c b/pngread.c
index d748661..864a715 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrtran.c b/pngrtran.c
index 7ada7fe..102caba 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngrutil.c b/pngrutil.c
index 428c04b..ab21687 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index 166f130..09efe63 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1553,4 +1553,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_19beta16 your_png_h_is_not_version_1_2_19beta16;
+typedef version_1_2_19beta17 your_png_h_is_not_version_1_2_19beta17;
diff --git a/pngvcrd.c b/pngvcrd.c
index 26d5b84..6fb6a3a 100644
--- a/pngvcrd.c
+++ b/pngvcrd.c
@@ -3,7 +3,7 @@
  *
  * For Intel x86 CPU and Microsoft Visual C++ compiler
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * Copyright (c) 1998, Intel Corporation
diff --git a/pngwutil.c b/pngwutil.c
index 89b2001..1605544 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.19 June 19, 2007
+ * Last changed in libpng 1.2.19 June 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index c30ad50..667d227 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -91,30 +91,21 @@
 add_definitions(-DZLIB_DLL)
 
 if(MSVC)
- add_definitions(-DPNG_USE_PNGVCRD -DPNG_NO_MODULEDEF
+ add_definitions(-DPNG_NO_MODULEDEF
    -D_CRT_SECURE_NO_DEPRECATE)
  set(libpng_sources ${libpng_sources}
          pngvcrd.c
  )
 else(MSVC)
- add_definitions(-DPNG_USE_PNGGCCRD)
  set(libpng_sources ${libpng_sources}
          pnggccrd.c
  )
 endif(MSVC)
 
-if(NOT MSVC)
- if(NOT PNG_MMX)
-   add_definitions(-DLIBPNG_NO_MMX)
-   add_definitions(-DPNG_NO_MMX_CODE)
- endif(NOT PNG_MMX)
-else(NOT MSVC)
- if(PNG_MMX)
- # maybe add this to pngconf.h ?
- add_definitions(-DPNG_MMX_CODE_SUPPORTED)
- endif(PNG_MMX)
-endif(NOT MSVC)
-
+if(NOT PNG_MMX)
+  add_definitions(-DLIBPNG_NO_MMX)
+  add_definitions(-DPNG_NO_MMX_CODE)
+endif(NOT PNG_MMX)
 
 if(PNG_CONSOLE_IO_SUPPORTED)
  add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
@@ -179,7 +170,7 @@
 
 # SET UP LINKS
 set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.2.19beta16
+#    VERSION 0.${PNGLIB_RELEASE}.1.2.19beta17
      VERSION 0.${PNGLIB_RELEASE}.0
      SOVERSION 0
      CLEAN_DIRECT_OUTPUT 1)
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index a49df6b..207f3ee 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.2.19beta16
+version=1.2.19beta17
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc-configure.in b/scripts/libpng.pc-configure.in
index f88a2b3..7f4ed5e 100644
--- a/scripts/libpng.pc-configure.in
+++ b/scripts/libpng.pc-configure.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.19beta16
+Version: 1.2.19beta17
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir} @LIBPNG_NO_MMX@
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 26a735a..47425bd 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.19beta16
+Version: 1.2.19beta17
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 3fa44d4..6a00d67 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index e920a61..ed74a7f 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index abd7b85..6de6ea8 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -20,7 +20,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index 510711c..7207e6c 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index 152525b..1da7b18 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -3,7 +3,7 @@
 #   of the library, and builds two copies of pngtest: one
 #   statically linked and one dynamically linked.
 #
-# Copyright (C) 2002, 2006 Soren Anderson, Charles Wilson,
+# Copyright (C) 2002, 2006, 2007 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
@@ -31,9 +31,8 @@
 
 DESTDIR=
 
-# To enable assembler optimizations, add '-DPNG_USE_PNGGCCRD' to
-# $CFLAGS, and include pnggccrd.o in $OBJS, below, and in the dependency
-# list at the bottom of this makefile.
+# To disable assembler optimizations, add '-DPNG_NO_MMX_CODE' to
+# $CFLAGS.
 
 CC=gcc
 ifdef MINGW
@@ -62,25 +61,23 @@
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 
-### if you use the asm, add pnggccrd.o to the OBJS list
-###
 ### if you don't need thread safety, but want the asm accel
-#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_THREAD_UNSAFE_OK -DPNG_USE_PNGGCCRD \
-#	$(addprefix -I,$(ZLIBINC)) -Wall -O3 $(ALIGN) -funroll-loops \
+#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_THREAD_UNSAFE_OK \
+#	$(addprefix -I,$(ZLIBINC)) -Wall -O $(ALIGN) -funroll-loops \
 #	-fomit-frame-pointer)  # $(WARNMORE) -g -DPNG_DEBUG=5
 ### if you need thread safety and want (minimal) asm accel
-#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_USE_PNGGCCRD $(addprefix -I,$(ZLIBINC)) \
-#	-Wall -O3 $(ALIGN) -funroll-loops \
+#CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
+#	-Wall -O $(ALIGN) -funroll-loops \
 #	-fomit-frame-pointer)  # $(WARNMORE) -g -DPNG_DEBUG=5
 ### Normal (non-asm) compilation
 CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
-        -Wall -O3 $(ALIGN) -funroll-loops \
+        -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
 LIBNAME = libpng12
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
@@ -115,7 +112,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -300,6 +297,7 @@
 pngmem.o pngmem.pic.o:		png.h pngconf.h pngmem.c
 pngset.o pngset.pic.o:		png.h pngconf.h pngset.c
 pngget.o pngget.pic.o:		png.h pngconf.h pngget.c
+pnggccrd.o pnggccrd.pic.o:	png.h pngconf.h pnggccrd.c
 pngread.o pngread.pic.o:	png.h pngconf.h pngread.c
 pngrtran.o pngrtran.pic.o:	png.h pngconf.h pngrtran.c
 pngrutil.o pngrutil.pic.o:	png.h pngconf.h pngrutil.c
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index befc81f..dbdafd6 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -19,7 +19,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -38,7 +38,8 @@
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops
+# CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
+CFLAGS=-I$(ZLIBINC) -Wall -O -funroll-loops
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
 
 INCPATH=$(prefix)/include
@@ -63,7 +64,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -217,6 +218,7 @@
 pngwio.o pngwio.pic.o: png.h pngconf.h
 pngmem.o pngmem.pic.o: png.h pngconf.h
 pngset.o pngset.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 pngget.o pngget.pic.o: png.h pngconf.h
 pngread.o pngread.pic.o: png.h pngconf.h
 pngrtran.o pngrtran.pic.o: png.h pngconf.h
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 1cc5ebe..3454cd2 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index 6674d6f..fd16119 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index 7821e38..dbaf7fc 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -24,7 +24,7 @@
 LDADD+=         -lm -lz
 DPADD+=         ${LIBM} ${LIBZ}
 
-CFLAGS+= -I. -DPNG_USE_PNGGCCRD
+CFLAGS+= -I.
 .if (${MACHINE_ARCH} != "i386")
 CFLAGS+= -DPNG_NO_MMX_CODE
 .endif
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index 10018ac..92af367 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -16,7 +16,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -60,15 +60,15 @@
 
 # Remove -DPNG_THREAD_UNSAFE_OK if you need thread safety
 ### for generic gcc:
-CFLAGS=-DPNG_THREAD_UNSAFE_OK -DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall \
-	-O3 $(ALIGN) -funroll-loops \
+CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -Wall -O \
+	$(ALIGN) -funroll-loops \
 	-fomit-frame-pointer  # $(WARNMORE) -g -DPNG_DEBUG=5
 ### for gcc 2.95.2 on 686:
-#CFLAGS=-DPNG_THREAD_UNSAFE_OK -DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall -O3 \
+#CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -Wall -O \
 #	-mcpu=i686 -malign-double -ffast-math -fstrict-aliasing \
 #	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer 
 ### for gcc 2.7.2.3 on 486 and up:
-#CFLAGS=-DPNG_THREAD_UNSAFE_OK -DPNG_USE_PNGGCCRD -I$(ZLIBINC) -Wall -O3 \
+#CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -Wall -O \
 #	-m486 -malign-double -ffast-math \
 #	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer 
 
@@ -120,7 +120,7 @@
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo cppflags=\"-DPNG_THREAD_UNSAFE_OK -DPNG_USE_PNGGCCRD\"; \
+	echo cppflags=\"-DPNG_THREAD_UNSAFE_OK \"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
 	echo libs=\"-lpng12 -lz -lm\"; \
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index d3d012b..b0aeb4f 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index a18bcaf..0d3a29b 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -1,5 +1,5 @@
 # makefile for libpng on HP-UX using GCC with the HP ANSI/C linker.
-# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2007 Glenn Randers-Pehrson
 # Copyright (C) 2001, Laurent faillie
 # Copyright (C) 1998, 1999 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -53,7 +53,7 @@
 
 # for pgcc version 2.95.1, -O3 is buggy; don't use it.
 
-CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops \
+CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 #LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
@@ -80,7 +80,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -237,5 +237,6 @@
 pngwtran.o pngwtran.pic.o: png.h pngconf.h
 pngwutil.o pngwutil.pic.o: png.h pngconf.h
 pngpread.o pngpread.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 
 pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index 9891762..d3bb7e2 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -45,7 +45,7 @@
 MANPATH=$(prefix)/man
 BINPATH=$(exec_prefix)/bin
 
-CFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
+CFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0 -DPNG_NO_MMX_CODE
 # Caution: be sure you have built zlib with the same CFLAGS.
 CCFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
@@ -67,7 +67,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -226,3 +226,4 @@
 pngwtran.o: png.h pngconf.h
 pngwutil.o: png.h pngconf.h
 pngpread.o: png.h pngconf.h
+pnggccrd.o: png.h pngconf.h
diff --git a/scripts/makefile.intel b/scripts/makefile.intel
index 1cabe77..a155ddd 100644
--- a/scripts/makefile.intel
+++ b/scripts/makefile.intel
@@ -8,14 +8,6 @@
 # To use, do "nmake /f scripts\makefile.intel"
 
 
-# ------------------- Intel C/C++ Compiler 4.0 and later -------------------
-
-# Caution: the assembler code was introduced at libpng version 1.0.4 and has
-# not yet been thoroughly tested.
-
-# Use assembler code
-ASMCODE=-DPNG_USE_PNGVCRD
-
 # Where the zlib library and include files are located
 ZLIBLIB=..\zlib
 ZLIBINC=..\zlib
@@ -36,7 +28,7 @@
 
 
 CC=icl -c
-CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) $(ASMCODE) -nologo
+CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
 LD=link
 LDFLAGS=/SUBSYSTEM:CONSOLE /NOLOGO
 
@@ -44,8 +36,7 @@
 
 OBJS=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O) \
 pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O) \
-pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O) pngvcrd$(O)
-
+pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O) pngvcrd$(O) pnggccrd$(O)
 
 all: test
 
@@ -70,6 +61,9 @@
 pngrutil$(O): png.h pngconf.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)
 
+pnggccrd$(O): png.h pngconf.h
+	$(CC) $(CFLAGS) $*.c $(ERRFILE)
+
 pngvcrd$(O): png.h pngconf.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)
 
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index c6ac9f6..7344288 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -47,7 +47,7 @@
 
 # for pgcc version 2.95.1, -O3 is buggy; don't use it.
 
-CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops \
+CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
 LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
@@ -75,7 +75,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -233,6 +233,7 @@
 pngmem.o pngmem.pic.o: png.h pngconf.h
 pngset.o pngset.pic.o: png.h pngconf.h
 pngget.o pngget.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 pngread.o pngread.pic.o: png.h pngconf.h
 pngrtran.o pngrtran.pic.o: png.h pngconf.h
 pngrutil.o pngrutil.pic.o: png.h pngconf.h
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index 81bb56e..0337afa 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -40,9 +40,8 @@
 MKDIR_P=/bin/mkdir -pv
 
 
-# To enable assembler optimizations, add '-DPNG_USE_PNGGCCRD' to
-# $CFLAGS, and include pnggccrd.o in $OBJS, below.
-
+# To disable assembler optimizations, add '-DPNG_NO_MMX_CODE' to
+# $CFLAGS.
 
 # Where "make install" puts libpng*.a, *png*.dll, png.h, and pngconf.h
 ifndef prefix
@@ -63,25 +62,23 @@
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 
-### if you use the asm, add pnggccrd.o to the OBJS list
-###
 ### if you don't need thread safety, but want the asm accel
-#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_THREAD_UNSAFE_OK -DPNG_USE_PNGGCCRD \
-#	$(addprefix -I,$(ZLIBINC)) -Wall -O3 $(ALIGN) -funroll-loops \
+#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_THREAD_UNSAFE_OK \
+#	$(addprefix -I,$(ZLIBINC)) -Wall -O $(ALIGN) -funroll-loops \
 #	-fomit-frame-pointer)  # $(WARNMORE) -g -DPNG_DEBUG=5
 ### if you need thread safety and want (minimal) asm accel
-#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_USE_PNGGCCRD $(addprefix -I,$(ZLIBINC)) \
-#	-Wall -O3 $(ALIGN) -funroll-loops \
+#CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
+#	-Wall -O $(ALIGN) -funroll-loops \
 #	-fomit-frame-pointer)  # $(WARNMORE) -g -DPNG_DEBUG=5
 ### Normal (non-asm) compilation
 CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
-        -Wall -O3 $(ALIGN) -funroll-loops \
+        -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
 LIBNAME = libpng12
 PNGMAJ = 0
 MINGDLL = 12
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
@@ -112,7 +109,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index f8ad323..fe410fd 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -14,14 +14,14 @@
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.19beta16
+SHLIB_MINOR=	1.2.19beta17
 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
 INCS=	png.h pngconf.h
 MAN=	libpng.3 libpngpf.3 png.5
 
-CPPFLAGS+=-I${.CURDIR} -DPNG_USE_PNGGCCRD
+CPPFLAGS+=-I${.CURDIR}
 
 # something like this for mmx assembler, but it core dumps for me at the moment
 # .if ${MACHINE_ARCH} == "i386"
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 73c3ef7..7abd03a 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -14,14 +14,14 @@
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.19beta16
+SHLIB_MINOR=	1.2.19beta17
 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
 INCS=	png.h pngconf.h
 MAN=	libpng.3 libpngpf.3 png.5
 
-CPPFLAGS+=-I${.CURDIR} -DPNG_USE_PNGGCCRD
+CPPFLAGS+=-I${.CURDIR}
 
 # something like this for mmx assembler, but it core dumps for me at the moment
 # .if ${MACHINE_ARCH} == "i386"
diff --git a/scripts/makefile.nommx b/scripts/makefile.nommx
index 091b014..12638fc 100644
--- a/scripts/makefile.nommx
+++ b/scripts/makefile.nommx
@@ -7,7 +7,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -48,8 +48,7 @@
 
 # for pgcc version 2.95.1, -O3 is buggy; don't use it.
 
-CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops \
-	-DPNG_NO_MMX_CODE \
+CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
 LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
@@ -77,7 +76,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -244,5 +243,6 @@
 pngwtran.o pngwtran.pic.o: png.h pngconf.h
 pngwutil.o pngwutil.pic.o: png.h pngconf.h
 pngpread.o pngpread.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 
 pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 700e6a6..a34db00 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -8,7 +8,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.19beta16
+SHLIB_MINOR=	1.2.19beta17
 
 LIB=	png
 SRCS=	png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
@@ -18,7 +18,7 @@
 HDRS=	png.h pngconf.h
 
 CFLAGS+= -Wall
-CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE -DPNG_USE_PNGGCCRD
+CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE 
 
 NOPROFILE= Yes
 
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 02ae1f2..f2d983e 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -38,7 +38,7 @@
 ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
-CFLAGS= -dy -belf -I$(ZLIBINC) -O3
+CFLAGS= -dy -belf -I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include/libpng
@@ -221,5 +221,6 @@
 pngwtran.o pngwtran.pic.o: png.h pngconf.h
 pngwutil.o pngwutil.pic.o: png.h pngconf.h
 pngpread.o pngpread.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 
 pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index bc4f45c..bdc7221 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -44,8 +44,7 @@
 ABI=
 
 WARNMORE= # -g -DPNG_DEBUG=5
-CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32 \
-  -DPNG_USE_PNGGCCRD -DPNG_NO_MMX_CODE
+CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32 -DPNG_NO_MMX_CODE
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
   -set_version sgi$(PNGMAJ).0
@@ -94,7 +93,7 @@
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"$(ABI)\"; \
-	echo cppflags=\"-DPNG_USE_PNGGCCRD -DPNG_NO_MMX_CODE\"; \
+	echo cppflags=\"-DPNG_NO_MMX_CODE\"; \
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index cec46a4..c8b3ecf 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -45,9 +45,8 @@
 
 WARNMORE=-fullwarn
 # Note: -KPIC is the default anyhow
-#CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC -DPNG_USE_PNGGCCRD # -g -DPNG_DEBUG=5
-CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_USE_PNGGCCRD \
-  -DPNG_NO_MMX_CODE
+#CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC -DPNG_NO_MMX_CODE # -g -DPNG_DEBUG=5
+CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_NO_MMX_CODE
 LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
@@ -96,7 +95,7 @@
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo cppflags=\"-DPNG_USE_PNGGCCRD -DPNG_NO_MMX_CODE\"; \
+	echo cppflags=\"-DPNG_NO_MMX_CODE\"; \
 	echo ccopts=\"$(ABI)\"; \
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index cee3a96..644734d 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -47,8 +47,8 @@
 #WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-#CFLAGS=-I$(ZLIBINC) -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5
-CFLAGS=-I$(ZLIBINC) -O3
+#CFLAGS=-I$(ZLIBINC) -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
+CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
 LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
@@ -73,7 +73,7 @@
 
 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
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -243,5 +243,6 @@
 pngwtran.o pngwtran.pic.o: png.h pngconf.h
 pngwutil.o pngwutil.pic.o: png.h pngconf.h
 pngpread.o pngpread.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 
 pngtest.o: png.h pngconf.h
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index bf41f87..74dc257 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -44,7 +44,7 @@
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -Wall -O \
-	-DPNG_USE_PNGGCCRD -DPNG_NO_MMX_CODE; \
+	-DPNG_NO_MMX_CODE; \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
 LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
@@ -92,7 +92,7 @@
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo cppflags=\"-DPNG_USE_PNGGCCRD -DPNG_NO_MMX_CODE\"; \
+	echo cppflags=\"-DPNG_NO_MMX_CODE\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo libs=\"-lpng12 -lz -lm\"; \
diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86
index 2158743..b18c5f5 100644
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.19beta16
+PNGMIN = 1.2.19beta17
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -44,7 +44,6 @@
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -Wall -O \
-        -DPNG_USE_PNGGCCRD \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
 LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
@@ -92,7 +91,7 @@
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo cppflags=\"-DPNG_USE_PNGGCCRD"; \
+	echo cppflags=\""; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo libs=\"-lpng12 -lz -lm\"; \
diff --git a/scripts/makefile.vcwin32 b/scripts/makefile.vcwin32
index d23d812..fc6ece6 100644
--- a/scripts/makefile.vcwin32
+++ b/scripts/makefile.vcwin32
@@ -11,7 +11,7 @@
 CC = cl
 LD = link
 AR = lib
-CFLAGS  = -nologo -MD -O2 -W3 -I..\zlib
+CFLAGS  = -nologo -DPNG_NO_MMX_CODE -MD -O2 -W3 -I..\zlib
 LDFLAGS = -nologo
 ARFLAGS = -nologo
 RM = del
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index b296248..3c59af4 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.19beta16
+; Version 1.2.19beta17
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
diff --git a/scripts/pngw32.def b/scripts/pngw32.def
index bba2eb8..57b679e 100644
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.2.19beta16
+;Version 1.2.19beta17
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3