Release libpng version 1.6.41

ANNOUNCE

@@ -1,13 +1,5 @@
-libpng 1.6.41.git
+libpng 1.6.41 - January 24, 2024
-=================
+================================
-
-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 1.6.40 - June 21, 2023
-=============================
 
 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):
 
- * libpng-1.6.40.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.41.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.40.tar.gz
+ * libpng-1.6.41.tar.gz (deflate-compressed)
 
 Source files with CRLF line endings (for Windows):
 
- * lpng1640.7z (LZMA-compressed, recommended)
+ * lpng1641.7z (LZMA-compressed, recommended)
- * lpng1640.zip
+ * lpng1641.zip (deflate-compressed)
 
 Other information:
 
@@ -33,15 +25,39 @@ Other information:
  * TRADEMARK.md
 
 
-Changes from version 1.6.39 to version 1.6.40
+Changes from version 1.6.40 to version 1.6.41
 ---------------------------------------------
 
- * Fixed the eXIf chunk multiplicity checks.
+ * Added SIMD-optimized code for the Loongarch LSX hardware.
- * Fixed a memory leak in pCAL processing.
+   (Contributed by GuXiWei, JinBo and ZhangLixia)
- * Corrected the validity report about tRNS inside png_get_valid().
+ * Fixed the run-time discovery of MIPS MSA hardware.
- * Fixed various build issues on *BSD, Mac and Windows.
+   (Contributed by Sui Jingfeng)
- * Updated the configurations and the scripts for continuous integration.
+ * Fixed an off-by-one error in the function `png_do_check_palette_indexes`,
- * Cleaned up the code, the build scripts, and the documentation.
+   which failed to recognize errors that might have existed in the first
+   column of a broken palette-encoded image. This was a benign regression
+   accidentally introduced in libpng-1.6.33. No pixel was harmed.
+   (Contributed by Adam Richter; reviewed by John Bowler)
+ * Fixed, improved and modernized the contrib/pngminus programs, i.e.,
+   png2pnm.c and pnm2png.c
+ * Removed old and peculiar portability hacks that were meant to silence
+   warnings issued by gcc version 7.1 alone.
+   (Contributed by John Bowler)
+ * Fixed and modernized the CMake file, and raised the minimum required
+   CMake version from 3.1 to 3.6.
+   (Contributed by Clinton Ingram, Timothy Lyanguzov, Tyler Kropp, et al.)
+ * Allowed the configure script to disable the building of auxiliary tools
+   and tests, thus catching up with the CMake file.
+   (Contributed by Carlo Bramini)
+ * Fixed a build issue on Mac.
+   (Contributed by Zixu Wang)
+ * Moved the Autoconf macro files to scripts/autoconf.
+ * Moved the CMake files (except for the main CMakeLists.txt) to
+   scripts/cmake and moved the list of their contributing authors to
+   scripts/cmake/AUTHORS.md
+ * Updated the CI configurations and scripts.
+ * Relicensed the CI scripts to the MIT License.
+ * Improved the test coverage.
+   (Contributed by John Bowler)
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

CHANGES

@@ -6129,7 +6129,37 @@ Version 1.6.40 [June 21, 2023]
   Updated the configurations and the scripts for continuous integration.
   Cleaned up the code, the build scripts, and the documentation.
 
-Version 1.6.41 [TODO]
+Version 1.6.41 [January 24, 2024]
+  Added SIMD-optimized code for the Loongarch LSX hardware.
+    (Contributed by GuXiWei, JinBo and ZhangLixia)
+  Fixed the run-time discovery of MIPS MSA hardware.
+    (Contributed by Sui Jingfeng)
+  Fixed an off-by-one error in the function `png_do_check_palette_indexes`,
+    which failed to recognize errors that might have existed in the first
+    column of a broken palette-encoded image. This was a benign regression
+    accidentally introduced in libpng-1.6.33. No pixel was harmed.
+    (Contributed by Adam Richter; reviewed by John Bowler)
+  Fixed, improved and modernized the contrib/pngminus programs, i.e.,
+    png2pnm.c and pnm2png.c
+  Removed old and peculiar portability hacks that were meant to silence
+    warnings issued by gcc version 7.1 alone.
+    (Contributed by John Bowler)
+  Fixed and modernized the CMake file, and raised the minimum required
+    CMake version from 3.1 to 3.6.
+    (Contributed by Clinton Ingram, Timothy Lyanguzov, Tyler Kropp, et al.)
+  Allowed the configure script to disable the building of auxiliary tools
+    and tests, thus catching up with the CMake file.
+    (Contributed by Carlo Bramini)
+  Fixed a build issue on Mac.
+    (Contributed by Zixu Wang)
+  Moved the Autoconf macro files to scripts/autoconf.
+  Moved the CMake files (except for the main CMakeLists.txt) to
+    scripts/cmake and moved the list of their contributing authors to
+    scripts/cmake/AUTHORS.md
+  Updated the CI configurations and scripts.
+  Relicensed the CI scripts to the MIT License.
+  Improved the test coverage.
+    (Contributed by John Bowler)
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
 Subscription is required; visit

CMakeLists.txt

@@ -20,8 +20,8 @@ cmake_minimum_required(VERSION 3.6)
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 6)
 set(PNGLIB_REVISION 41)
-#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_ABI_VERSION ${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_SHARED_VERSION ${PNGLIB_ABI_VERSION}.${PNGLIB_REVISION}.${PNGLIB_SUBREVISION})

README

@@ -1,5 +1,5 @@
-README for libpng version 1.6.41.git
+README for libpng version 1.6.41
-====================================
+================================
 
 See the note about version numbers near the top of `png.h`.
 See `INSTALL` for instructions on how to install libpng.

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for libpng 1.6.41.git.
+# Generated by GNU Autoconf 2.72 for libpng 1.6.41.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -614,8 +614,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.6.41.git'
+PACKAGE_VERSION='1.6.41'
-PACKAGE_STRING='libpng 1.6.41.git'
+PACKAGE_STRING='libpng 1.6.41'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1416,7 +1416,7 @@ if test "$ac_init_help" = "long"; then
   # 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 1.6.41.git to adapt to many kinds of systems.
+'configure' configures libpng 1.6.41 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1487,7 +1487,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.6.41.git:";;
+     short | recursive ) echo "Configuration of libpng 1.6.41:";;
    esac
   cat <<\_ACEOF
 
@@ -1683,7 +1683,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.6.41.git
+libpng configure 1.6.41
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1946,7 +1946,7 @@ cat >config.log <<_ACEOF
 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 1.6.41.git, which was
+It was created by libpng $as_me 1.6.41, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3246,7 +3246,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.6.41.git'
+ VERSION='1.6.41'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -3379,7 +3379,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.6.41.git
+PNGLIB_VERSION=1.6.41
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=41
@@ -15382,7 +15382,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.6.41.git, which was
+This file was extended by libpng $as_me 1.6.41, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -15450,7 +15450,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-libpng config.status 1.6.41.git
+libpng config.status 1.6.41
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

configure.ac

@@ -25,7 +25,7 @@ AC_PREREQ([2.68])
 
 dnl Version number stuff here:
 
-AC_INIT([libpng],[1.6.41.git],[png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng],[1.6.41],[png-mng-implement@lists.sourceforge.net])
 AC_CONFIG_MACRO_DIR([scripts/autoconf])
 
 # 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 stop configure from automagically running automake
 
-PNGLIB_VERSION=1.6.41.git
+PNGLIB_VERSION=1.6.41
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=41

libpng-manual.txt

@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- Copyright (c) 2018-2023 Cosmin Truta
+ Copyright (c) 2018-2024 Cosmin Truta
  Copyright (c) 1998-2018 Glenn Randers-Pehrson
 
  This document is released under the libpng license.
@@ -9,9 +9,9 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.40 - June 2023
+ libpng version 1.6.36, December 2018, through 1.6.41 - January 2024
  Updated and distributed by Cosmin Truta
- Copyright (c) 2018-2023 Cosmin Truta
+ Copyright (c) 2018-2024 Cosmin Truta
 
  libpng versions 0.97, January 1998, through 1.6.35 - July 2018
  Updated and distributed by Glenn Randers-Pehrson

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "June 21, 2023"
+.TH LIBPNG 3 "January 24, 2024"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.40
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.41
 
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -519,7 +519,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- Copyright (c) 2018-2023 Cosmin Truta
+ Copyright (c) 2018-2024 Cosmin Truta
  Copyright (c) 1998-2018 Glenn Randers-Pehrson
 
  This document is released under the libpng license.
@@ -528,9 +528,9 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.40 - June 2023
+ libpng version 1.6.36, December 2018, through 1.6.41 - January 2024
  Updated and distributed by Cosmin Truta
- Copyright (c) 2018-2023 Cosmin Truta
+ Copyright (c) 2018-2024 Cosmin Truta
 
  libpng versions 0.97, January 1998, through 1.6.35 - July 2018
  Updated and distributed by Glenn Randers-Pehrson

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "June 21, 2023"
+.TH LIBPNGPF 3 "January 24, 2024"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.40
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.41
 (private functions)
 
 .SH SYNOPSIS

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "June 21, 2023"
+.TH PNG 5 "January 24, 2024"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 

png.c

@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_41_git Your_png_h_is_not_version_1_6_41_git;
+typedef png_libpng_version_1_6_41 Your_png_h_is_not_version_1_6_41;
 
 /* Tells libpng that we have already handled the first "num_bytes" bytes
  * of the PNG file signature.  If the PNG data is embedded into another
@@ -794,7 +794,7 @@ png_get_copyright(png_const_structrp png_ptr)
    return PNG_STRING_COPYRIGHT
 #else
    return PNG_STRING_NEWLINE \
-      "libpng version 1.6.41.git" PNG_STRING_NEWLINE \
+      "libpng version 1.6.41" PNG_STRING_NEWLINE \
       "Copyright (c) 2018-2024 Cosmin Truta" PNG_STRING_NEWLINE \
       "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
       PNG_STRING_NEWLINE \

png.h

@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.41.git
+ * libpng version 1.6.41
  *
  * Copyright (c) 2018-2024 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
@@ -15,7 +15,7 @@
  *   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:
  *     Glenn Randers-Pehrson
- *   libpng versions 1.6.36, December 2018, through 1.6.40, June 2023:
+ *   libpng versions 1.6.36, December 2018, through 1.6.41, January 2024:
  *     Cosmin Truta
  *   See also "Contributing Authors", below.
  */
@@ -239,7 +239,7 @@
  *    ...
  *    1.5.30                  15    10530  15.so.15.30[.0]
  *    ...
- *    1.6.40                  16    10640  16.so.16.40[.0]
+ *    1.6.41                  16    10641  16.so.16.41[.0]
  *
  *    Henceforth the source version will match the shared-library major and
  *    minor numbers; the shared-library major version number will be used for
@@ -278,8 +278,8 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.41.git"
+#define PNG_LIBPNG_VER_STRING "1.6.41"
-#define PNG_HEADER_VERSION_STRING " libpng version 1.6.41.git\n"
+#define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
@@ -292,7 +292,7 @@
 /* This should be zero for a public release, or non-zero for a
  * development version.  [Deprecated]
  */
-#define PNG_LIBPNG_VER_BUILD  1
+#define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -309,7 +309,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        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
  * would be octal.  We must not include leading zeros.
@@ -318,7 +318,7 @@
  * From version 1.0.1 it is:
  * XXYYZZ, where XX=major, YY=minor, ZZ=release
  */
-#define PNG_LIBPNG_VER 10641 /* 1.6.41.git */
+#define PNG_LIBPNG_VER 10641 /* 1.6.41 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.
@@ -428,7 +428,7 @@ extern "C" {
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_6_41_git;
+typedef char* png_libpng_version_1_6_41;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *

pngconf.h

@@ -1,9 +1,9 @@
 
 /* pngconf.h - machine-configurable file for libpng
  *
- * libpng version 1.6.41.git
+ * libpng version 1.6.41
  *
- * Copyright (c) 2018-2023 Cosmin Truta
+ * Copyright (c) 2018-2024 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

pngpriv.h

@@ -1,7 +1,7 @@
 
 /* pngpriv.h - private declarations for use inside libpng
  *
- * Copyright (c) 2018-2023 Cosmin Truta
+ * Copyright (c) 2018-2024 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

pngtest.c

@@ -2155,4 +2155,4 @@ main(void)
 #endif
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_41_git Your_png_h_is_not_version_1_6_41_git;
+typedef png_libpng_version_1_6_41 Your_png_h_is_not_version_1_6_41;

scripts/libpng-config-head.in

@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.6.41.git
+version=1.6.41
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.6.41.git
+Version: 1.6.41
 Libs: -L${libdir} -lpng16
 Cflags: -I${includedir}

scripts/pnglibconf.h.prebuilt

@@ -1,7 +1,6 @@
-/* 1.6.41.git STANDARD API DEFINITION */
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.6.41.git */
+/* libpng version 1.6.41 */
 
 /* Copyright (c) 2018-2024 Cosmin Truta */
 /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */