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Glenn Randers-Pehrson 2006-06-27 15:23:00 -05:00
parent f5eac0c7fa
commit e3358d1839
44 changed files with 125 additions and 131 deletions
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53
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.2.11 - June 26, 2006 Libpng 1.2.12 - June 27, 2006
This is a public release of libpng, intended for use in production codes. This is a public release of libpng, intended for use in production codes.
@ -8,57 +8,40 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a Source files with LF line endings (for Unix/Linux) and with a
"configure" script "configure" script
libpng-1.2.11.tar.gz libpng-1.2.12.tar.gz
libpng-1.2.11.tar.bz2 libpng-1.2.12.tar.bz2
Source files with LF line endings (for Unix/Linux) without the Source files with LF line endings (for Unix/Linux) without the
"configure" script "configure" script
libpng-1.2.11-no-config.tar.gz libpng-1.2.12-no-config.tar.gz
libpng-1.2.11-no-config.tar.bz2 libpng-1.2.12-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the Source files with CRLF line endings (for Windows), without the
"configure" script "configure" script
lpng1211.zip lpng1212.zip
lpng1211.tar.bz2 lpng1212.tar.bz2
Project files Project files
libpng-1.2.11-project-netware.zip libpng-1.2.12-project-netware.zip
libpng-1.2.11-project-wince.zip libpng-1.2.12-project-wince.zip
Other information: Other information:
libpng-1.2.11-README.txt libpng-1.2.12-README.txt
libpng-1.2.11-KNOWNBUGS.txt libpng-1.2.12-KNOWNBUGS.txt
libpng-1.2.11-LICENSE.txt libpng-1.2.12-LICENSE.txt
libpng-1.2.11-Y2K-compliance.txt libpng-1.2.12-Y2K-compliance.txt
Changes since the last public release (1.2.10): Changes since the last public release (1.2.11):
version 1.2.11 [June 26, 2006] version 1.2.12 [June 27, 2006]
scripts/libpng.pc.in contained "configure" style version info and would
not work with makefiles. version 1.0.20, 1.2.12 [June 27, 2006]
The shared-library makefiles were linking to libpng.so.0 instead of Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
libpng.so.3 compatibility as the library.
Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow. buffer overflow.
Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb)
Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
Removed the accidental leftover Makefile.in~ (Cosmin).
Avoided potential buffer overflow and optimized buffer in
png_write_sCAL(), png_write_sCAL_s() (Cosmin).
Removed the include directories and libraries from CFLAGS and LDFLAGS
in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
Allow zero-length IDAT chunks after the entire zlib datastream, but not
after another intervening chunk type.
Deleted extraneous square brackets from [config.h] in configure.ac
Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
Revised INSTALL and autogen.sh
Fixed typo in several makefiles (-W1 should be -Wl)
Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
reading out of bounds.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit

19
CHANGES
View File

@ -1480,7 +1480,7 @@ version 1.2.9beta5 [March 4, 2006]
Restored scripts/makefile.elf which was inadvertently deleted. Restored scripts/makefile.elf which was inadvertently deleted.
version 1.2.9beta6 [March 6, 2006] version 1.2.9beta6 [March 6, 2006]
Fixed typo (11) in configuration files. Fixed typo (12) in configuration files.
version 1.2.9beta7 [March 7, 2006] version 1.2.9beta7 [March 7, 2006]
Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
@ -1588,26 +1588,33 @@ version 1.2.11beta4 [June 6, 2006]
Allow zero-length IDAT chunks after the entire zlib datastream, but not Allow zero-length IDAT chunks after the entire zlib datastream, but not
after another intervening chunk type. after another intervening chunk type.
version 1.2.11rc1 [June 13, 2006] version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
Deleted extraneous square brackets from [config.h] in configure.ac Deleted extraneous square brackets from [config.h] in configure.ac
version 1.2.11rc2 [June 14, 2006] version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
Added prototypes for PNG_INCH_CONVERSIONS functions to png.h Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
Revised INSTALL and autogen.sh Revised INSTALL and autogen.sh
Fixed typo in several makefiles (-W1 should be -Wl) Fixed typo in several makefiles (-W1 should be -Wl)
Added typedef for png_int_32 and png_uint_32 on 64-bit systems. Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
version 1.2.11rc3 [June 15, 2006] version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
Removed the new typedefs for 64-bit systems (delay until version 1.4.0) Removed the new typedefs for 64-bit systems (delay until version 1.4.0)
Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
reading out of bounds. reading out of bounds.
version 1.2.11rc4 [June 15, 2006] version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
Really removed the new typedefs for 64-bit systems. Really removed the new typedefs for 64-bit systems.
version 1.2.11rc5 [June 26, 2006] version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
Removed png_sig_bytes entry from scripts/pngw32.def Removed png_sig_bytes entry from scripts/pngw32.def
version 1.0.19, 1.2.11 [June 26, 2006]
None.
version 1.0.20, 1.2.12 [June 27, 2006]
Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
buffer overflow.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement https://lists.sourceforge.net/lists/listinfo/png-mng-implement

16
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.2.11 - June 26, 2006 Installing libpng version 1.2.12 - June 27, 2006
On Unix/Linux and similar systems, you can simply type On Unix/Linux and similar systems, you can simply type
@ -37,7 +37,7 @@ to have access to the zlib.h and zconf.h include files that
correspond to the version of zlib that's installed. correspond to the version of zlib that's installed.
You can rename the directories that you downloaded (they You can rename the directories that you downloaded (they
might be called "libpng-1.2.11" or "lpng109" and "zlib-1.2.1" might be called "libpng-1.2.12" or "lpng109" and "zlib-1.2.1"
or "zlib121") so that you have directories called "zlib" and "libpng". or "zlib121") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this: Your directory structure should look like this:
@ -93,11 +93,11 @@ include
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning, makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng12.so.0.1.2.11) gcc, creates libpng12.so.0.1.2.12)
makefile.linux => Linux/ELF makefile makefile.linux => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.11) (gcc, creates libpng12.so.0.1.2.12)
makefile.gcmmx => Linux/ELF makefile makefile.gcmmx => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.11, (gcc, creates libpng12.so.0.1.2.12,
uses assembler code tuned for Intel MMX platform) uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
@ -120,12 +120,12 @@ include
makefile.openbsd => OpenBSD makefile makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, makefile.sggcc => Silicon Graphics (gcc,
creates libpng12.so.0.1.2.11) creates libpng12.so.0.1.2.12)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng12.so.0.1.2.11) creates libpng12.so.0.1.2.12)
makefile.so9 => Solaris 9 makefile (gcc, makefile.so9 => Solaris 9 makefile (gcc,
creates libpng12.so.0.1.2.11) creates libpng12.so.0.1.2.12)
makefile.32sunu => Sun Ultra 32-bit makefile makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

2
KNOWNBUG
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@ -1,5 +1,5 @@
Known bugs in libpng version 1.2.11 Known bugs in libpng version 1.2.12
1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when 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 reading interlaced PNG files, when assembler code is enabled but running

4
LICENSE
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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng versions 1.2.6, August 15, 2004, through 1.2.11, June 26, 2006, are libpng versions 1.2.6, August 15, 2004, through 1.2.12, June 27, 2006, are
Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5 distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors with the following individual added to the list of Contributing Authors
@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
June 26, 2006 June 27, 2006

14
README
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@ -1,4 +1,4 @@
README for libpng version 1.2.11 - June 26, 2006 (shared library 12.0) README for libpng version 1.2.12 - June 27, 2006 (shared library 12.0)
See the note about version numbers near the top of png.h See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng. See INSTALL for instructions on how to install libpng.
@ -190,11 +190,11 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning, makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng12.so.0.1.2.11) gcc, creates libpng12.so.0.1.2.12)
makefile.linux => Linux/ELF makefile makefile.linux => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.11) (gcc, creates libpng12.so.0.1.2.12)
makefile.gcmmx => Linux/ELF makefile makefile.gcmmx => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.11, (gcc, creates libpng12.so.0.1.2.12,
uses assembler code tuned for Intel MMX platform) uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
@ -216,12 +216,12 @@ Files in this distribution:
makefile.openbsd => OpenBSD makefile makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics makefile.sggcc => Silicon Graphics
(gcc, creates libpng12.so.0.1.2.11) (gcc, creates libpng12.so.0.1.2.12)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng12.so.0.1.2.11) (gcc, creates libpng12.so.0.1.2.12)
makefile.so9 => Solaris 9 makefile makefile.so9 => Solaris 9 makefile
(gcc, creates libpng12.so.0.1.2.11) (gcc, creates libpng12.so.0.1.2.12)
makefile.32sunu => Sun Ultra 32-bit makefile makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng: Y2K compliance in libpng:
========================= =========================
June 26, 2006 June 27, 2006
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.11 are Y2K compliant. It is my belief that earlier upward through 1.2.12 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer Libpng only has three year fields. One is a 2-byte unsigned integer

24
configure vendored
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@ -1,6 +1,6 @@
#! /bin/sh #! /bin/sh
# Guess values for system-dependent variables and create Makefiles. # Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.59 for libpng 1.2.11. # Generated by GNU Autoconf 2.59 for libpng 1.2.12.
# #
# Report bugs to <png-mng-implement@lists.sourceforge.net>. # Report bugs to <png-mng-implement@lists.sourceforge.net>.
# #
@ -423,8 +423,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
# Identity of this package. # Identity of this package.
PACKAGE_NAME='libpng' PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng' PACKAGE_TARNAME='libpng'
PACKAGE_VERSION='1.2.11' PACKAGE_VERSION='1.2.12'
PACKAGE_STRING='libpng 1.2.11' PACKAGE_STRING='libpng 1.2.12'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net' PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
ac_unique_file="pngget.c" ac_unique_file="pngget.c"
@ -954,7 +954,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing. # 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. # This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF cat <<_ACEOF
\`configure' configures libpng 1.2.11 to adapt to many kinds of systems. \`configure' configures libpng 1.2.12 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]... Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1020,7 +1020,7 @@ fi
if test -n "$ac_init_help"; then if test -n "$ac_init_help"; then
case $ac_init_help in case $ac_init_help in
short | recursive ) echo "Configuration of libpng 1.2.11:";; short | recursive ) echo "Configuration of libpng 1.2.12:";;
esac esac
cat <<\_ACEOF cat <<\_ACEOF
@ -1167,7 +1167,7 @@ fi
test -n "$ac_init_help" && exit 0 test -n "$ac_init_help" && exit 0
if $ac_init_version; then if $ac_init_version; then
cat <<\_ACEOF cat <<\_ACEOF
libpng configure 1.2.11 libpng configure 1.2.12
generated by GNU Autoconf 2.59 generated by GNU Autoconf 2.59
Copyright (C) 2003 Free Software Foundation, Inc. Copyright (C) 2003 Free Software Foundation, Inc.
@ -1181,7 +1181,7 @@ cat >&5 <<_ACEOF
This file contains any messages produced by compilers while This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake. running configure, to aid debugging if configure makes a mistake.
It was created by libpng $as_me 1.2.11, which was It was created by libpng $as_me 1.2.12, which was
generated by GNU Autoconf 2.59. Invocation command line was generated by GNU Autoconf 2.59. Invocation command line was
$ $0 $@ $ $0 $@
@ -1824,7 +1824,7 @@ fi
# Define the identity of the package. # Define the identity of the package.
PACKAGE='libpng' PACKAGE='libpng'
VERSION='1.2.11' VERSION='1.2.12'
cat >>confdefs.h <<_ACEOF cat >>confdefs.h <<_ACEOF
@ -1979,9 +1979,9 @@ fi
PNGLIB_VERSION=1.2.11 PNGLIB_VERSION=1.2.12
PNGLIB_MAJOR=12 PNGLIB_MAJOR=12
PNGLIB_MINOR=11 PNGLIB_MINOR=12
@ -20681,7 +20681,7 @@ _ASBOX
} >&5 } >&5
cat >&5 <<_CSEOF cat >&5 <<_CSEOF
This file was extended by libpng $as_me 1.2.11, which was This file was extended by libpng $as_me 1.2.12, which was
generated by GNU Autoconf 2.59. Invocation command line was generated by GNU Autoconf 2.59. Invocation command line was
CONFIG_FILES = $CONFIG_FILES CONFIG_FILES = $CONFIG_FILES
@ -20744,7 +20744,7 @@ _ACEOF
cat >>$CONFIG_STATUS <<_ACEOF cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\ ac_cs_version="\\
libpng config.status 1.2.11 libpng config.status 1.2.12
configured by $0, generated by GNU Autoconf 2.59, configured by $0, generated by GNU Autoconf 2.59,
with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\" with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"

6
configure.ac
View File

@ -18,14 +18,14 @@ AC_PREREQ(2.59)
dnl Version number stuff here: dnl Version number stuff here:
AC_INIT([libpng], [1.2.11], [png-mng-implement@lists.sourceforge.net]) AC_INIT([libpng], [1.2.12], [png-mng-implement@lists.sourceforge.net])
AM_INIT_AUTOMAKE AM_INIT_AUTOMAKE
dnl stop configure from automagically running automake dnl stop configure from automagically running automake
AM_MAINTAINER_MODE AM_MAINTAINER_MODE
PNGLIB_VERSION=1.2.11 PNGLIB_VERSION=1.2.12
PNGLIB_MAJOR=12 PNGLIB_MAJOR=12
PNGLIB_MINOR=11 PNGLIB_MINOR=12
dnl End of version number stuff dnl End of version number stuff

18
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "June 26, 2006" .TH LIBPNG 3 "June 27, 2006"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.11 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.12
.SH SYNOPSIS .SH SYNOPSIS
\fI\fB \fI\fB
@ -821,7 +821,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT .SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng libpng.txt - A description on how to use and modify libpng
libpng version 1.2.11 - June 26, 2006 libpng version 1.2.12 - June 27, 2006
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net> <glennrp at users.sourceforge.net>
Copyright (c) 1998-2005 Glenn Randers-Pehrson Copyright (c) 1998-2005 Glenn Randers-Pehrson
@ -3738,13 +3738,13 @@ application:
.SH IX. Y2K Compliance in libpng .SH IX. Y2K Compliance in libpng
June 26, 2006 June 27, 2006
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.11 are Y2K compliant. It is my belief that earlier upward through 1.2.12 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that Libpng only has three year fields. One is a 2-byte unsigned integer that
@ -3909,6 +3909,8 @@ the first widely used release:
1.2.11rc1-5 13 10211 12.so.0.11[.0] 1.2.11rc1-5 13 10211 12.so.0.11[.0]
1.0.19 10 10019 10.so.0.19[.0] 1.0.19 10 10019 10.so.0.19[.0]
1.2.11 13 10211 12.so.0.11[.0] 1.2.11 13 10211 12.so.0.11[.0]
1.0.20 10 10020 10.so.0.20[.0]
1.2.12 13 10212 12.so.0.12[.0]
Henceforth the source version will match the shared-library minor Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be and patch numbers; the shared-library major version number will be
@ -3964,7 +3966,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation. Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.2.11 - June 26, 2006: Libpng version 1.2.12 - June 27, 2006:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc. Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net). Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -3985,7 +3987,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng versions 1.2.6, August 15, 2004, through 1.2.11, June 26, 2006, are libpng versions 1.2.6, August 15, 2004, through 1.2.12, June 27, 2006, are
Copyright (c) 2004-2006 Glenn Randers-Pehrson, and are Copyright (c) 2004-2006 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5 distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors with the following individual added to the list of Contributing Authors
@ -4084,7 +4086,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
June 26, 2006 June 27, 2006
.\" end of man page .\" end of man page

6
libpng.txt
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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng libpng.txt - A description on how to use and modify libpng
libpng version 1.2.11 - June 26, 2006 libpng version 1.2.12 - June 27, 2006
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net> <glennrp at users.sourceforge.net>
Copyright (c) 1998-2005 Glenn Randers-Pehrson Copyright (c) 1998-2005 Glenn Randers-Pehrson
@ -2917,13 +2917,13 @@ application:
IX. Y2K Compliance in libpng IX. Y2K Compliance in libpng
June 26, 2006 June 27, 2006
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.11 are Y2K compliant. It is my belief that earlier upward through 1.2.12 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that Libpng only has three year fields. One is a 2-byte unsigned integer that

4
libpngpf.3
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "June 26, 2006" .TH LIBPNGPF 3 "June 27, 2006"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.11 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.12
(private functions) (private functions)
.SH SYNOPSIS .SH SYNOPSIS
\fB#include <png.h>\fP \fB#include <png.h>\fP

2
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "June 26, 2006" .TH PNG 5 "June 27, 2006"
.SH NAME .SH NAME
png \- Portable Network Graphics (PNG) format png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION .SH DESCRIPTION

4
png.c
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@ -13,7 +13,7 @@
#include "png.h" #include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_11 Your_png_h_is_not_version_1_2_11; typedef version_1_2_12 Your_png_h_is_not_version_1_2_12;
/* Version information for C files. This had better match the version /* Version information for C files. This had better match the version
* string defined in png.h. */ * string defined in png.h. */
@ -693,7 +693,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr) png_get_copyright(png_structp png_ptr)
{ {
if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */ if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */
return ((png_charp) "\n libpng version 1.2.11 - June 26, 2006\n\ return ((png_charp) "\n libpng version 1.2.12 - June 27, 2006\n\
Copyright (c) 1998-2006 Glenn Randers-Pehrson\n\ Copyright (c) 1998-2006 Glenn Randers-Pehrson\n\
Copyright (c) 1996-1997 Andreas Dilger\n\ Copyright (c) 1996-1997 Andreas Dilger\n\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n"); Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");

22
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.2.11 - June 26, 2006 * libpng version 1.2.12 - June 27, 2006
* Copyright (c) 1998-2006 Glenn Randers-Pehrson * Copyright (c) 1998-2006 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -9,7 +9,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * 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 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.2.11 - June 26, 2006: Glenn * libpng versions 0.97, January 1998, through 1.2.12 - June 27, 2006: Glenn
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
* *
* Note about libpng version numbers: * Note about libpng version numbers:
@ -124,6 +124,8 @@
* 1.2.11rc1-5 13 10211 12.so.0.11[.0] * 1.2.11rc1-5 13 10211 12.so.0.11[.0]
* 1.0.19 10 10019 10.so.0.19[.0] * 1.0.19 10 10019 10.so.0.19[.0]
* 1.2.11 13 10211 12.so.0.11[.0] * 1.2.11 13 10211 12.so.0.11[.0]
* 1.0.20 10 10020 10.so.0.20[.0]
* 1.2.12 13 10212 12.so.0.12[.0]
* *
* Henceforth the source version will match the shared-library major * Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be * and minor numbers; the shared-library major version number will be
@ -153,7 +155,7 @@
* If you modify libpng you may insert additional notices immediately following * If you modify libpng you may insert additional notices immediately following
* this sentence. * this sentence.
* *
* libpng versions 1.2.6, August 15, 2004, through 1.2.11, June 26, 2006, are * libpng versions 1.2.6, August 15, 2004, through 1.2.12, June 27, 2006, are
* Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are * Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5 * distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors: * with the following individual added to the list of Contributing Authors:
@ -265,13 +267,13 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* June 26, 2006 * June 27, 2006
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
* *
* This is your unofficial assurance that libpng from version 0.71 and * This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.2.11 are Y2K compliant. It is my belief that earlier * upward through 1.2.12 are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant. * versions were also Y2K compliant.
* *
* Libpng only has three year fields. One is a 2-byte unsigned integer * Libpng only has three year fields. One is a 2-byte unsigned integer
@ -327,9 +329,9 @@
*/ */
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.2.11" #define PNG_LIBPNG_VER_STRING "1.2.12"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.11 - June 26, 2006 (header)\n" " libpng version 1.2.12 - June 27, 2006 (header)\n"
#define PNG_LIBPNG_VER_SONUM 0 #define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM 13 #define PNG_LIBPNG_VER_DLLNUM 13
@ -337,7 +339,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1 #define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 2 #define PNG_LIBPNG_VER_MINOR 2
#define PNG_LIBPNG_VER_RELEASE 11 #define PNG_LIBPNG_VER_RELEASE 12
/* This should match the numeric part of the final component of /* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */ * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
@ -365,7 +367,7 @@
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
* version 1.0.0 was mis-numbered 100 instead of 10000). From * version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */ * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */
#define PNG_LIBPNG_VER 10211 /* 1.2.11 */ #define PNG_LIBPNG_VER 10212 /* 1.2.12 */
#ifndef PNG_VERSION_INFO_ONLY #ifndef PNG_VERSION_INFO_ONLY
/* include the compression library's header */ /* include the compression library's header */
@ -1371,7 +1373,7 @@ struct png_struct_def
/* This triggers a compiler error in png.c, if png.c and png.h /* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number. * do not agree upon the version number.
*/ */
typedef png_structp version_1_2_11; typedef png_structp version_1_2_12;
typedef png_struct FAR * FAR * png_structpp; typedef png_struct FAR * FAR * png_structpp;

2
pngconf.h
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@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng version 1.2.11 - June 26, 2006 * libpng version 1.2.12 - June 27, 2006
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2005 Glenn Randers-Pehrson * Copyright (c) 1998-2005 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngrutil.c
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@ -276,7 +276,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
if (ret != Z_STREAM_END) if (ret != Z_STREAM_END)
{ {
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE) #if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char umsg[50]; char umsg[52];
if (ret == Z_BUF_ERROR) if (ret == Z_BUF_ERROR)
sprintf(umsg,"Buffer error in compressed datastream in %s chunk", sprintf(umsg,"Buffer error in compressed datastream in %s chunk",

2
pngtest.c
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@ -1549,4 +1549,4 @@ main(int argc, char *argv[])
} }
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_11 your_png_h_is_not_version_1_2_11; typedef version_1_2_12 your_png_h_is_not_version_1_2_12;

2
scripts/libpng-config-head.in
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@ -8,7 +8,7 @@
# Modeled after libxml-config. # Modeled after libxml-config.
version=1.2.11 version=1.2.12
prefix="" prefix=""
libdir="" libdir=""
libs="" libs=""

2
scripts/libpng.pc.in
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@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
Name: libpng Name: libpng
Description: Loads and saves PNG files Description: Loads and saves PNG files
Version: 1.2.11 Version: 1.2.12
Libs: -L${libdir} -lpng12 Libs: -L${libdir} -lpng12
Cflags: -I${includedir} Cflags: -I${includedir}

2
scripts/makefile.32sunu
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@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.64sunu
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@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.aix
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@ -20,7 +20,7 @@ LN_SF = ln -f -s
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local prefix=/usr/local

2
scripts/makefile.beos
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@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.cygwin
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@ -80,7 +80,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
CYGDLL = 12 CYGDLL = 12
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(CYGDLL).dll SHAREDLIB=cygpng$(CYGDLL).dll

2
scripts/makefile.darwin
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@ -19,7 +19,7 @@ ZLIBINC=../zlib
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.dec
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@ -5,7 +5,7 @@
# Library name: # Library name:
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.elf
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@ -12,7 +12,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.gcmmx
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@ -16,7 +16,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.hp64
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@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.hpgcc
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@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.hpux
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@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.linux
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@ -6,7 +6,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.mingw
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@ -76,7 +76,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
MINGDLL = 12 MINGDLL = 12
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=libpng$(MINGDLL).dll SHAREDLIB=libpng$(MINGDLL).dll

2
scripts/makefile.ne12bsd
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@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
LIB= png12 LIB= png12
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.11 SHLIB_MINOR= 1.2.12
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ 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 \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.netbsd
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@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng
LIB= png LIB= png
SHLIB_MAJOR= 3 SHLIB_MAJOR= 3
SHLIB_MINOR= 1.2.11 SHLIB_MINOR= 1.2.12
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ 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 \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.openbsd
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@ -7,7 +7,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.11 SHLIB_MINOR= 1.2.12
LIB= png LIB= png
SRCS= png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \ SRCS= png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \

2
scripts/makefile.sco
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@ -9,7 +9,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.sggcc
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@ -6,7 +6,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.sgi
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@ -6,7 +6,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.so9
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@ -8,7 +8,7 @@
# Library name: # Library name:
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.solaris
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@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.11 PNGMIN = 1.2.12
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/pngos2.def
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@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2 ; PNG.LIB module definition file for OS/2
;---------------------------------------- ;----------------------------------------
; Version 1.2.11 ; Version 1.2.12
LIBRARY PNG LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2" DESCRIPTION "PNG image compression library for OS/2"

2
scripts/pngw32.def
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@ -5,7 +5,7 @@
LIBRARY LIBRARY
EXPORTS EXPORTS
;Version 1.2.11 ;Version 1.2.12
png_build_grayscale_palette @1 png_build_grayscale_palette @1
png_check_sig @2 png_check_sig @2
png_chunk_error @3 png_chunk_error @3