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Release libpng version 1.6.50

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Cosmin Truta 2025-07-01 23:50:00 +03:00
parent 254a64ec30
commit 2b978915d8
16 changed files with 62 additions and 56 deletions
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35
ANNOUNCE
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@ -1,13 +1,5 @@
libpng 1.6.50.git libpng 1.6.50 - July 1, 2025
================= ============================
This is a development version, not intended to be a public release.
It will be replaced by a public release, or by another development
version, at a later time.
libpng 1.6.49 - June 12, 2025
=============================
This is a public release of libpng, intended for use in production code. This is a public release of libpng, intended for use in production code.
@ -17,13 +9,13 @@ Files available for download
Source files with LF line endings (for Unix/Linux): Source files with LF line endings (for Unix/Linux):
* libpng-1.6.49.tar.xz (LZMA-compressed, recommended) * libpng-1.6.50.tar.xz (LZMA-compressed, recommended)
* libpng-1.6.49.tar.gz (deflate-compressed) * libpng-1.6.50.tar.gz (deflate-compressed)
Source files with CRLF line endings (for Windows): Source files with CRLF line endings (for Windows):
* lpng1649.7z (LZMA-compressed, recommended) * lpng1650.7z (LZMA-compressed, recommended)
* lpng1649.zip (deflate-compressed) * lpng1650.zip (deflate-compressed)
Other information: Other information:
@ -33,13 +25,18 @@ Other information:
* TRADEMARK.md * TRADEMARK.md
Changes from version 1.6.48 to version 1.6.49 Changes from version 1.6.49 to version 1.6.50
--------------------------------------------- ---------------------------------------------
* Added SIMD-optimized code for the RISC-V Vector Extension (RVV). * Improved the detection of the RVV Extension on the RISC-V platform.
(Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil) (Contributed by Filip Wasil)
* Added various fixes and improvements to the build scripts and to * Replaced inline ASM with C intrinsics in the RVV code.
the sample code. (Contributed by Filip Wasil)
* Fixed a decoder defect in which unknown chunks trailing IDAT, set
to go through the unknown chunk handler, incorrectly triggered
out-of-place IEND errors.
(Contributed by John Bowler)
* Fixed the CMake file for cross-platform builds that require `libm`.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net. Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

11
CHANGES
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@ -6267,7 +6267,16 @@ Version 1.6.49 [June 12, 2025]
Added various fixes and improvements to the build scripts and to Added various fixes and improvements to the build scripts and to
the sample code. the sample code.
Version 1.6.50 [TODO] Version 1.6.50 [July 1, 2025]
Improved the detection of the RVV Extension on the RISC-V platform.
(Contributed by Filip Wasil)
Replaced inline ASM with C intrinsics in the RVV code.
(Contributed by Filip Wasil)
Fixed a decoder defect in which unknown chunks trailing IDAT, set
to go through the unknown chunk handler, incorrectly triggered
out-of-place IEND errors.
(Contributed by John Bowler)
Fixed the CMake file for cross-platform builds that require `libm`.
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 is required; visit Subscription is required; visit

4
CMakeLists.txt
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@ -19,8 +19,8 @@ cmake_minimum_required(VERSION 3.14...4.0)
set(PNGLIB_MAJOR 1) set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6) set(PNGLIB_MINOR 6)
set(PNGLIB_REVISION 50) set(PNGLIB_REVISION 50)
#set(PNGLIB_SUBREVISION 0) set(PNGLIB_SUBREVISION 0)
set(PNGLIB_SUBREVISION "git") #set(PNGLIB_SUBREVISION "git")
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION}) set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION})
set(PNGLIB_ABI_VERSION ${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNGLIB_ABI_VERSION ${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_SHARED_VERSION ${PNGLIB_ABI_VERSION}.${PNGLIB_REVISION}.${PNGLIB_SUBREVISION}) set(PNGLIB_SHARED_VERSION ${PNGLIB_ABI_VERSION}.${PNGLIB_REVISION}.${PNGLIB_SUBREVISION})

4
README
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@ -1,5 +1,5 @@
README for libpng version 1.6.50.git README for libpng version 1.6.50
==================================== ================================
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.

22
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 2.72 for libpng 1.6.50.git. # Generated by GNU Autoconf 2.72 for libpng 1.6.50.
# #
# Report bugs to <png-mng-implement@lists.sourceforge.net>. # Report bugs to <png-mng-implement@lists.sourceforge.net>.
# #
@ -614,8 +614,8 @@ MAKEFLAGS=
# Identity of this package. # Identity of this package.
PACKAGE_NAME='libpng' PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng' PACKAGE_TARNAME='libpng'
PACKAGE_VERSION='1.6.50.git' PACKAGE_VERSION='1.6.50'
PACKAGE_STRING='libpng 1.6.50.git' PACKAGE_STRING='libpng 1.6.50'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net' PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
PACKAGE_URL='' PACKAGE_URL=''
@ -1424,7 +1424,7 @@ 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 1.6.50.git to adapt to many kinds of systems. 'configure' configures libpng 1.6.50 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]... Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1495,7 +1495,7 @@ fi
if test -n "$ac_init_help"; then if test -n "$ac_init_help"; then
case $ac_init_help in case $ac_init_help in
short | recursive ) echo "Configuration of libpng 1.6.50.git:";; short | recursive ) echo "Configuration of libpng 1.6.50:";;
esac esac
cat <<\_ACEOF cat <<\_ACEOF
@ -1698,7 +1698,7 @@ fi
test -n "$ac_init_help" && exit $ac_status test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then if $ac_init_version; then
cat <<\_ACEOF cat <<\_ACEOF
libpng configure 1.6.50.git libpng configure 1.6.50
generated by GNU Autoconf 2.72 generated by GNU Autoconf 2.72
Copyright (C) 2023 Free Software Foundation, Inc. Copyright (C) 2023 Free Software Foundation, Inc.
@ -1961,7 +1961,7 @@ cat >config.log <<_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 1.6.50.git, which was It was created by libpng $as_me 1.6.50, which was
generated by GNU Autoconf 2.72. Invocation command line was generated by GNU Autoconf 2.72. Invocation command line was
$ $0$ac_configure_args_raw $ $0$ac_configure_args_raw
@ -3446,7 +3446,7 @@ fi
# Define the identity of the package. # Define the identity of the package.
PACKAGE='libpng' PACKAGE='libpng'
VERSION='1.6.50.git' VERSION='1.6.50'
printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@ -3665,7 +3665,7 @@ fi
PNGLIB_VERSION=1.6.50.git PNGLIB_VERSION=1.6.50
PNGLIB_MAJOR=1 PNGLIB_MAJOR=1
PNGLIB_MINOR=6 PNGLIB_MINOR=6
PNGLIB_RELEASE=50 PNGLIB_RELEASE=50
@ -16410,7 +16410,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
# report actual input values of CONFIG_FILES etc. instead of their # report actual input values of CONFIG_FILES etc. instead of their
# values after options handling. # values after options handling.
ac_log=" ac_log="
This file was extended by libpng $as_me 1.6.50.git, which was This file was extended by libpng $as_me 1.6.50, which was
generated by GNU Autoconf 2.72. Invocation command line was generated by GNU Autoconf 2.72. Invocation command line was
CONFIG_FILES = $CONFIG_FILES CONFIG_FILES = $CONFIG_FILES
@ -16478,7 +16478,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config='$ac_cs_config_escaped' ac_cs_config='$ac_cs_config_escaped'
ac_cs_version="\\ ac_cs_version="\\
libpng config.status 1.6.50.git libpng config.status 1.6.50
configured by $0, generated by GNU Autoconf 2.72, configured by $0, generated by GNU Autoconf 2.72,
with options \\"\$ac_cs_config\\" with options \\"\$ac_cs_config\\"

4
configure.ac
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@ -25,7 +25,7 @@ AC_PREREQ([2.68])
dnl Version number stuff here: dnl Version number stuff here:
AC_INIT([libpng],[1.6.50.git],[png-mng-implement@lists.sourceforge.net]) AC_INIT([libpng],[1.6.50],[png-mng-implement@lists.sourceforge.net])
AC_CONFIG_MACRO_DIR([scripts/autoconf]) AC_CONFIG_MACRO_DIR([scripts/autoconf])
# libpng does not follow GNU file name conventions (hence 'foreign') # libpng does not follow GNU file name conventions (hence 'foreign')
@ -46,7 +46,7 @@ dnl automake, so the following is not necessary (and is not defined anyway):
dnl AM_PREREQ([1.11.2]) dnl AM_PREREQ([1.11.2])
dnl stop configure from automagically running automake dnl stop configure from automagically running automake
PNGLIB_VERSION=1.6.50.git PNGLIB_VERSION=1.6.50
PNGLIB_MAJOR=1 PNGLIB_MAJOR=1
PNGLIB_MINOR=6 PNGLIB_MINOR=6
PNGLIB_RELEASE=50 PNGLIB_RELEASE=50

2
libpng-manual.txt
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@ -9,7 +9,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on: Based on:
libpng version 1.6.36, December 2018, through 1.6.49 - June 2025 libpng version 1.6.36, December 2018, through 1.6.50 - July 2025
Updated and distributed by Cosmin Truta Updated and distributed by Cosmin Truta
Copyright (c) 2018-2025 Cosmin Truta Copyright (c) 2018-2025 Cosmin Truta

4
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "July 1, 2025" .TH LIBPNG 3 "July 1, 2025"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.50.git libpng \- Portable Network Graphics (PNG) Reference Library 1.6.50
.SH SYNOPSIS .SH SYNOPSIS
\fB#include <png.h>\fP \fB#include <png.h>\fP
@ -528,7 +528,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on: Based on:
libpng version 1.6.36, December 2018, through 1.6.49 - June 2025 libpng version 1.6.36, December 2018, through 1.6.50 - July 2025
Updated and distributed by Cosmin Truta Updated and distributed by Cosmin Truta
Copyright (c) 2018-2025 Cosmin Truta Copyright (c) 2018-2025 Cosmin Truta

2
libpngpf.3
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@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "July 1, 2025" .TH LIBPNGPF 3 "July 1, 2025"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.50.git libpng \- Portable Network Graphics (PNG) Reference Library 1.6.50
.SH SYNOPSIS .SH SYNOPSIS
\fB#include "pngpriv.h"\fP \fB#include "pngpriv.h"\fP

4
png.c
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@ -13,7 +13,7 @@
#include "pngpriv.h" #include "pngpriv.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 png_libpng_version_1_6_50_git Your_png_h_is_not_version_1_6_50_git; typedef png_libpng_version_1_6_50 Your_png_h_is_not_version_1_6_50;
/* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the /* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the
* corresponding macro definitions. This causes a compile time failure if * corresponding macro definitions. This causes a compile time failure if
@ -815,7 +815,7 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT return PNG_STRING_COPYRIGHT
#else #else
return PNG_STRING_NEWLINE \ return PNG_STRING_NEWLINE \
"libpng version 1.6.50.git" PNG_STRING_NEWLINE \ "libpng version 1.6.50" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2025 Cosmin Truta" PNG_STRING_NEWLINE \ "Copyright (c) 2018-2025 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \ "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \ PNG_STRING_NEWLINE \

16
png.h
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@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.6.50.git * libpng version 1.6.50
* *
* Copyright (c) 2018-2025 Cosmin Truta * Copyright (c) 2018-2025 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
@ -14,7 +14,7 @@
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger * libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.35, July 2018: * libpng versions 0.97, January 1998, through 1.6.35, July 2018:
* Glenn Randers-Pehrson * Glenn Randers-Pehrson
* libpng versions 1.6.36, December 2018, through 1.6.49, June 2025: * libpng versions 1.6.36, December 2018, through 1.6.50, July 2025:
* Cosmin Truta * Cosmin Truta
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
*/ */
@ -238,7 +238,7 @@
* ... * ...
* 1.5.30 15 10530 15.so.15.30[.0] * 1.5.30 15 10530 15.so.15.30[.0]
* ... * ...
* 1.6.49 16 10649 16.so.16.49[.0] * 1.6.50 16 10650 16.so.16.50[.0]
* *
* Henceforth the source version will match the shared-library major and * Henceforth the source version will match the shared-library major and
* minor numbers; the shared-library major version number will be used for * minor numbers; the shared-library major version number will be used for
@ -274,7 +274,7 @@
*/ */
/* 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 "1.6.50.git" #define PNG_LIBPNG_VER_STRING "1.6.50"
#define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n" #define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
/* The versions of shared library builds should stay in sync, going forward */ /* The versions of shared library builds should stay in sync, going forward */
@ -290,7 +290,7 @@
/* This should be zero for a public release, or non-zero for a /* This should be zero for a public release, or non-zero for a
* development version. * development version.
*/ */
#define PNG_LIBPNG_VER_BUILD 1 #define PNG_LIBPNG_VER_BUILD 0
/* Release Status */ /* Release Status */
#define PNG_LIBPNG_BUILD_ALPHA 1 #define PNG_LIBPNG_BUILD_ALPHA 1
@ -307,7 +307,7 @@
#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
PNG_LIBPNG_BUILD_PRIVATE */ PNG_LIBPNG_BUILD_PRIVATE */
#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA #define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
/* Careful here. At one time, Guy wanted to use 082, but that /* Careful here. At one time, Guy wanted to use 082, but that
* would be octal. We must not include leading zeros. * would be octal. We must not include leading zeros.
@ -316,7 +316,7 @@
* From version 1.0.1 it is: * From version 1.0.1 it is:
* XXYYZZ, where XX=major, YY=minor, ZZ=release * XXYYZZ, where XX=major, YY=minor, ZZ=release
*/ */
#define PNG_LIBPNG_VER 10650 /* 1.6.50.git */ #define PNG_LIBPNG_VER 10650 /* 1.6.50 */
/* Library configuration: these options cannot be changed after /* Library configuration: these options cannot be changed after
* the library has been built. * the library has been built.
@ -426,7 +426,7 @@ extern "C" {
/* 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 char* png_libpng_version_1_6_50_git; typedef char* png_libpng_version_1_6_50;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info. /* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
* *

2
pngconf.h
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@ -1,6 +1,6 @@
/* pngconf.h - machine-configurable file for libpng /* pngconf.h - machine-configurable file for libpng
* *
* libpng version 1.6.50.git * libpng version 1.6.50
* *
* Copyright (c) 2018-2025 Cosmin Truta * Copyright (c) 2018-2025 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson

2
pngtest.c
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@ -50,7 +50,7 @@
#define STDERR stdout #define STDERR stdout
/* 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 png_libpng_version_1_6_50_git Your_png_h_is_not_version_1_6_50_git; typedef png_libpng_version_1_6_50 Your_png_h_is_not_version_1_6_50;
/* Ensure that all version numbers in png.h are consistent with one another. */ /* Ensure that all version numbers in png.h are consistent with one another. */
#if (PNG_LIBPNG_VER != PNG_LIBPNG_VER_MAJOR * 10000 + \ #if (PNG_LIBPNG_VER != PNG_LIBPNG_VER_MAJOR * 10000 + \

2
scripts/libpng-config-head.in
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@ -11,7 +11,7 @@
# Modeled after libxml-config. # Modeled after libxml-config.
version=1.6.50.git version=1.6.50
prefix="" prefix=""
libdir="" libdir=""
libs="" libs=""

2
scripts/libpng.pc.in
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@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
Name: libpng Name: libpng
Description: Loads and saves PNG files Description: Loads and saves PNG files
Version: 1.6.50.git Version: 1.6.50
Libs: -L${libdir} -lpng16 Libs: -L${libdir} -lpng16
Cflags: -I${includedir} Cflags: -I${includedir}

2
scripts/pnglibconf.h.prebuilt
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@ -1,6 +1,6 @@
/* pnglibconf.h - library build configuration */ /* pnglibconf.h - library build configuration */
/* libpng version 1.6.50.git */ /* libpng version 1.6.50 */
/* Copyright (c) 2018-2025 Cosmin Truta */ /* Copyright (c) 2018-2025 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */ /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */