diff --git a/ANNOUNCE b/ANNOUNCE
index b382bc3..e425f18 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.10beta6 - April 17, 2006
+Libpng 1.2.10beta7 - April 18, 2006
 
 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
 
-   1.2.10beta6.tar.gz
-   1.2.10beta6.tar.bz2
+   1.2.10beta7.tar.gz
+   1.2.10beta7.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   1.2.10beta6-no-config.tar.gz
-   1.2.10beta6-no-config.tar.bz2
+   1.2.10beta7-no-config.tar.gz
+   1.2.10beta7-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1210b06.zip
-   lp1210b06.tar.bz2
+   lp1210b07.zip
+   lp1210b07.tar.bz2
 
 Project files
 
-   1.2.10beta6-project-netware.zip
-   1.2.10beta6-project-wince.zip
+   1.2.10beta7-project-netware.zip
+   1.2.10beta7-project-wince.zip
 
 Other information:
 
-   1.2.10beta6-README.txt
-   1.2.10beta6-KNOWNBUGS.txt
-   1.2.10beta6-LICENSE.txt
-   1.2.10beta6-Y2K-compliance.txt
+   1.2.10beta7-README.txt
+   1.2.10beta7-KNOWNBUGS.txt
+   1.2.10beta7-LICENSE.txt
+   1.2.10beta7-Y2K-compliance.txt
 
 Changes since the last public release (1.2.9):
 
@@ -61,6 +61,9 @@
   Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
   Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
 
+version 1.2.10beta7 [April 18, 2006]
+  Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
+
 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/CHANGES b/CHANGES
index d5f1451..91d901a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1545,6 +1545,9 @@
   Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
   Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
 
+version 1.2.10beta7 [April 18, 2006]
+  Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
+
 version 1.4.0beta1 [future]
   Enabled iTXt support (changes png_struct, thus requires so-number change).
   Removed deprecated functions png_read_init, png_write_init, png_info_init,
diff --git a/INSTALL b/INSTALL
index fcb70ce..7466535 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.10beta6 - April 17, 2006
+Installing libpng version 1.2.10beta7 - April 18, 2006
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -29,7 +29,7 @@
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.10beta6" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.10beta7" 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:
@@ -85,11 +85,11 @@
 
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.10beta6)
+                       gcc, creates libpng12.so.0.1.2.10beta7)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.10beta6)
+                       (gcc, creates libpng12.so.0.1.2.10beta7)
  makefile.gcmmx    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.10beta6,
+                       (gcc, creates libpng12.so.0.1.2.10beta7,
                        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
@@ -112,12 +112,12 @@
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.10beta6)
+                       creates libpng12.so.0.1.2.10beta7)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.10beta6)
+                       creates libpng12.so.0.1.2.10beta7)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.10beta6)
+                       creates libpng12.so.0.1.2.10beta7)
  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 3baafa4..ec46085 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.2.10beta6
+Known bugs in libpng version 1.2.10beta7
 
 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 02daddf..1f58196 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 1.2.10beta6, April 17, 2006, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.10beta7, April 18, 2006, are
 Copyright (c) 2004, 2006 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
-April 17, 2006
+April 18, 2006
diff --git a/README b/README
index cc409a8..b089746 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.2.10beta6 - April 17, 2006 (shared library 12.0)
+README for libpng version 1.2.10beta7 - April 18, 2006 (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.0.1.2.10beta6)
+                            gcc, creates libpng12.so.0.1.2.10beta7)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.10beta6)
+                            (gcc, creates libpng12.so.0.1.2.10beta7)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.10beta6,
+                            (gcc, creates libpng12.so.0.1.2.10beta7,
                             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.0.1.2.10beta6)
+                            (gcc, creates libpng12.so.0.1.2.10beta7)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.10beta6)
+                            (gcc, creates libpng12.so.0.1.2.10beta7)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.10beta6)
+                            (gcc, creates libpng12.so.0.1.2.10beta7)
        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 4ecc448..d057bb8 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      April 17, 2006
+      April 18, 2006
 
       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 1.2.10beta6 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.10beta7 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 bb1ad85..321e330 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.59 for libpng 1.2.10beta6.
+# Generated by GNU Autoconf 2.59 for libpng 1.2.10beta7.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -423,8 +423,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.2.10beta6'
-PACKAGE_STRING='libpng 1.2.10beta6'
+PACKAGE_VERSION='1.2.10beta7'
+PACKAGE_STRING='libpng 1.2.10beta7'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -954,7 +954,7 @@
   # 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 1.2.10beta6 to adapt to many kinds of systems.
+\`configure' configures libpng 1.2.10beta7 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1020,7 +1020,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.2.10beta6:";;
+     short | recursive ) echo "Configuration of libpng 1.2.10beta7:";;
    esac
   cat <<\_ACEOF
 
@@ -1167,7 +1167,7 @@
 test -n "$ac_init_help" && exit 0
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.2.10beta6
+libpng configure 1.2.10beta7
 generated by GNU Autoconf 2.59
 
 Copyright (C) 2003 Free Software Foundation, Inc.
@@ -1181,7 +1181,7 @@
 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 1.2.10beta6, which was
+It was created by libpng $as_me 1.2.10beta7, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   $ $0 $@
@@ -1824,7 +1824,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.2.10beta6'
+ VERSION='1.2.10beta7'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -1979,7 +1979,7 @@
 
 
 
-PNGLIB_VERSION=1.2.10beta6
+PNGLIB_VERSION=1.2.10beta7
 PNGLIB_MAJOR=12
 PNGLIB_MINOR=10
 
@@ -20681,7 +20681,7 @@
 } >&5
 cat >&5 <<_CSEOF
 
-This file was extended by libpng $as_me 1.2.10beta6, which was
+This file was extended by libpng $as_me 1.2.10beta7, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -20744,7 +20744,7 @@
 
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-libpng config.status 1.2.10beta6
+libpng config.status 1.2.10beta7
 configured by $0, generated by GNU Autoconf 2.59,
   with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/configure.ac b/configure.ac
index 50b1521..9ff7067 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.10beta6], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.10beta7], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.10beta6
+PNGLIB_VERSION=1.2.10beta7
 PNGLIB_MAJOR=12
 PNGLIB_MINOR=10
 
diff --git a/libpng.3 b/libpng.3
index 9af3256..6544e55 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "April 17, 2006"
+.TH LIBPNG 3 "April 18, 2006"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.10beta6
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.10beta7
 .SH SYNOPSIS
 \fI\fB
 
@@ -821,7 +821,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.10beta6 - April 17, 2006
+ libpng version 1.2.10beta7 - April 18, 2006
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2005 Glenn Randers-Pehrson
@@ -3730,13 +3730,13 @@
 
 .SH IX. Y2K Compliance in libpng
 
-April 17, 2006
+April 18, 2006
 
 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 1.2.10beta6 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.10beta7 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
@@ -3893,7 +3893,7 @@
  1.2.9beta4-11       13    10209  12.so.0.9[.0]
  1.2.9rc1            13    10209  12.so.0.9[.0]
  1.2.9               13    10209  12.so.0.9[.0]
- 1.2.10beta1-5       13    10210  12.so.0.10[.0]
+ 1.2.10beta1-7       13    10210  12.so.0.10[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3949,7 +3949,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.10beta6 - April 17, 2006:
+Libpng version 1.2.10beta7 - April 18, 2006:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3970,7 +3970,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.10beta6, April 17, 2006, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.10beta7, April 18, 2006, are
 Copyright (c) 2004-2006 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
@@ -4069,7 +4069,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-April 17, 2006
+April 18, 2006
 
 .\" end of man page
 
diff --git a/libpng.txt b/libpng.txt
index 7bff21e..7eb6a47 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.10beta6 - April 17, 2006
+ libpng version 1.2.10beta7 - April 18, 2006
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2005 Glenn Randers-Pehrson
@@ -2909,13 +2909,13 @@
 
 IX. Y2K Compliance in libpng
 
-April 17, 2006
+April 18, 2006
 
 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 1.2.10beta6 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.10beta7 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 8664f7c..0eb5b5c 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "April 17, 2006"
+.TH LIBPNGPF 3 "April 18, 2006"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.10beta6
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.10beta7
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index 5e776e8..15633aa 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "April 17, 2006"
+.TH PNG 5 "April 18, 2006"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 8f86db0..5b773da 100644
--- a/png.c
+++ b/png.c
@@ -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_10beta6 Your_png_h_is_not_version_1_2_10beta6;
+typedef version_1_2_10beta7 Your_png_h_is_not_version_1_2_10beta7;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -693,7 +693,7 @@
 png_get_copyright(png_structp png_ptr)
 {
    if (&png_ptr != NULL)  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.10beta6 - April 17, 2006\n\
+   return ((png_charp) "\n libpng version 1.2.10beta7 - April 18, 2006\n\
    Copyright (c) 1998-2006 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 787e98e..ce2c9b0 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.10beta6 - April 17, 2006
+ * libpng version 1.2.10beta7 - April 18, 2006
  * Copyright (c) 1998-2006 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 1.2.10beta6 - April 17, 2006: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.10beta7 - April 18, 2006: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -116,7 +116,7 @@
  *    1.2.9beta4-11           13    10209  12.so.0.9[.0]
  *    1.2.9rc1                13    10209  12.so.0.9[.0]
  *    1.2.9                   13    10209  12.so.0.9[.0]
- *    1.2.10beta1-5           13    10210  12.so.0.10[.0]
+ *    1.2.10beta1-7           13    10210  12.so.0.10[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -146,7 +146,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.10beta6, April 17, 2006, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.10beta7, April 18, 2006, are
  * Copyright (c) 2004, 2006 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:
@@ -258,13 +258,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    April 17, 2006
+ *    April 18, 2006
  *
  *    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 1.2.10beta6 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.10beta7 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
@@ -320,9 +320,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.10beta6"
+#define PNG_LIBPNG_VER_STRING "1.2.10beta7"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.10beta6 - April 17, 2006 (header)\n"
+   " libpng version 1.2.10beta7 - April 18, 2006 (header)\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -334,7 +334,7 @@
 /* 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  7
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -1364,7 +1364,7 @@
 /* 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_10beta6;
+typedef png_structp version_1_2_10beta7;
 
 typedef png_struct FAR * FAR * png_structpp;
 
diff --git a/pngconf.h b/pngconf.h
index 0f60490..ca68959 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.10beta6 - April 17, 2006
+ * libpng version 1.2.10beta7 - April 18, 2006
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2005 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index 80bf451..eb82490 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1549,4 +1549,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_10beta6 your_png_h_is_not_version_1_2_10beta6;
+typedef version_1_2_10beta7 your_png_h_is_not_version_1_2_10beta7;
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 5a96857..53f7c38 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.2.10beta6
+version=1.2.10beta7
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index b40a15b..2535887 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -32,7 +32,7 @@
 
 # where make install puts libpng.a, libpng12.so and libpng12/png.h
 prefix=/a
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 # Changing these to ../zlib poses a security risk.  If you want
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 9f202a2..907e151 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -32,7 +32,7 @@
 
 # where make install puts libpng.a, libpng12.so and libpng12/png.h
 prefix=/a
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 # Changing these to ../zlib poses a security risk.  If you want
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index a800678..70d91c0 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -20,7 +20,7 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index adbb119..feaa1af 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -48,7 +48,7 @@
 
 # where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
 MANPATH=$(prefix)/man
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index 7afdaab..3d223ea 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -46,7 +46,7 @@
 prefix=/usr
 $(warning You haven't specified a 'prefix=' location. Defaulting to "/usr")
 endif
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 ZLIBLIB= /usr/lib
@@ -80,7 +80,7 @@
 LIBNAME = libpng12
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 001f411..d28f2ea 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -8,7 +8,7 @@
 
 # where "make install" puts libpng.a, libpng12.dylib, png.h and pngconf.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
@@ -19,7 +19,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index ffc4ff5..bd0da9c 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -27,7 +27,7 @@
 
 # where make install puts libpng.a and png.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
 MANPATH=$(prefix)/man
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index a52d429..d0dc429 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -35,7 +35,7 @@
 # libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located.
 ZLIBLIB=/usr/local/lib
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index 8c81d1b..06e5a91 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -16,7 +16,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -40,7 +40,7 @@
 # libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located.
 #ZLIBLIB=/usr/local/lib
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index 341e7e5..65e40f4 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -47,7 +47,7 @@
 
 # where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
 MANPATH=$(prefix)/man
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 45df818..8ffd946 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -30,7 +30,7 @@
 
 # where "make install" puts libpng.a, $(OLDSO)*, png.h and pngconf.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 ZLIBLIB=/opt/zlib/lib
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index cc580df..9ccbcbb 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -39,7 +39,7 @@
 
 # where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
 MANPATH=$(prefix)/man
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index b23f74a..139fb05 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,7 +29,7 @@
 # libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located.
 #ZLIBLIB=/usr/local/lib
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index 03573f2..751115c 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -44,7 +44,7 @@
 prefix=/usr
 $(warning You haven't specified a 'prefix=' location. Defaulting to "/usr")
 endif
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 ZLIBLIB= /usr/lib
@@ -76,7 +76,7 @@
 LIBNAME = libpng12
 PNGMAJ = 0
 MINGDLL = 12
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index fff3980..a389dc8 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -13,7 +13,7 @@
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.10beta6
+SHLIB_MINOR=	1.2.10beta7
 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 6e9f7a8..0027260 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -13,7 +13,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.10beta6
+SHLIB_MINOR=	1.2.10beta7
 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 83a6fb5..9c22d8a 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -7,7 +7,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.10beta6
+SHLIB_MINOR=	1.2.10beta7
 
 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 b156999..a131099 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -30,7 +30,7 @@
 
 # where make install puts libpng.a, $(OLDSO)*, and png.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index b01b173..acb59f6 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,7 +29,7 @@
 # Prefix must be a full pathname.
 
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib32
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 906aa22..cceddd4 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,7 +29,7 @@
 # Prefix must be a full pathname.
 
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib32
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index 17a32a2..f38d290 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -31,7 +31,7 @@
 
 # Where make install puts libpng.a, $(OLDSO)*, and png.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 # Changing these to ../zlib poses a security risk.  If you want
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 953de66..60a87d3 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.10beta6
+PNGMIN = 1.2.10beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,7 +29,7 @@
 
 # Where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
-exec_prefix=$prefix
+exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
 # Changing these to ../zlib poses a security risk.  If you want
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 718dcdf..557af81 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.10beta6
+; Version 1.2.10beta7
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
diff --git a/scripts/pngw32.def b/scripts/pngw32.def
index b956123..27301c6 100644
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.2.10beta6
+;Version 1.2.10beta7
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3