Release libpng version 1.6.43

ANNOUNCE

@@ -1,13 +1,5 @@
-libpng 1.6.43.git
-=================
-
-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 1.6.42 - January 29, 2024
-================================
+libpng 1.6.43 - February 23, 2024
+=================================
 
 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-1.6.42.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.42.tar.gz (deflate-compressed)
+ * libpng-1.6.43.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.43.tar.gz (deflate-compressed)
 
 Source files with CRLF line endings (for Windows):
 
- * lpng1642.7z (LZMA-compressed, recommended)
- * lpng1642.zip (deflate-compressed)
+ * lpng1643.7z (LZMA-compressed, recommended)
+ * lpng1643.zip (deflate-compressed)
 
 Other information:
 
@@ -33,47 +25,36 @@ Other information:
  * TRADEMARK.md
 
 
-Changes from version 1.6.41 to version 1.6.42
----------------------------------------------
-
- * Fixed the implementation of the macro function `png_check_sig`.
-   This was an API regression, introduced in libpng-1.6.41.
-   (Reported by Matthieu Darbois)
-
-
-Changes from version 1.6.40 to version 1.6.41
+Changes from version 1.6.42 to version 1.6.43
 ---------------------------------------------
 
- * 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.
+ * Fixed the row width check in png_check_IHDR().
+   This corrected a bug that was specific to the 16-bit platforms,
+   and removed a spurious compiler warning from the 64-bit builds.
+   (Reported by Jacek Caban; fixed by John Bowler)
+ * Added eXIf chunk support to the push-mode reader in pngpread.c.
+   (Contributed by Chris Blume)
+ * Added contrib/pngexif for the benefit of the users who would like
+   to inspect the content of eXIf chunks.
+ * Added contrib/conftest/basic.dfa, a basic build-time configuration.
    (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.
+ * Fixed a preprocessor condition in pngread.c that broke build-time
+   configurations like contrib/conftest/pngcp.dfa.
    (Contributed by John Bowler)
+ * Added CMake build support for LoongArch LSX.
+   (Contributed by GuXiWei)
+ * Fixed a CMake build error that occurred under a peculiar state of the
+   dependency tree. This was a regression introduced in libpng-1.6.41.
+   (Contributed by Dan Rosser)
+ * Marked the installed libpng headers as system headers in CMake.
+   (Contributed by Benjamin Buch)
+ * Updated the build support for RISCOS.
+   (Contributed by Cameron Cawley)
+ * Updated the makefiles to allow cross-platform builds to initialize
+   conventional make variables like AR and ARFLAGS.
+ * Added various improvements to the CI scripts in areas like version
+   consistency verification and text linting.
+ * Added version consistency verification to pngtest.c also.
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

CHANGES

@@ -6130,7 +6130,7 @@ Version 1.6.40 [June 21, 2023]
   Cleaned up the code, the build scripts, and the documentation.
 
 Version 1.6.41 [January 24, 2024]
-  Added SIMD-optimized code for the Loongarch LSX hardware.
+  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)
@@ -6167,7 +6167,34 @@ Version 1.6.42 [January 29, 2024]
     (Reported by Matthieu Darbois)
   Fixed and updated the libpng manual.
 
-Version 1.6.43 [TODO]
+Version 1.6.43 [February 23, 2024]
+  Fixed the row width check in png_check_IHDR().
+    This corrected a bug that was specific to the 16-bit platforms,
+    and removed a spurious compiler warning from the 64-bit builds.
+    (Reported by Jacek Caban; fixed by John Bowler)
+  Added eXIf chunk support to the push-mode reader in pngpread.c.
+    (Contributed by Chris Blume)
+  Added contrib/pngexif for the benefit of the users who would like
+    to inspect the content of eXIf chunks.
+  Added contrib/conftest/basic.dfa, a basic build-time configuration.
+    (Contributed by John Bowler)
+  Fixed a preprocessor condition in pngread.c that broke build-time
+    configurations like contrib/conftest/pngcp.dfa.
+    (Contributed by John Bowler)
+  Added CMake build support for LoongArch LSX.
+    (Contributed by GuXiWei)
+  Fixed a CMake build error that occurred under a peculiar state of the
+    dependency tree. This was a regression introduced in libpng-1.6.41.
+    (Contributed by Dan Rosser)
+  Marked the installed libpng headers as system headers in CMake.
+    (Contributed by Benjamin Buch)
+  Updated the build support for RISCOS.
+    (Contributed by Cameron Cawley)
+  Updated the makefiles to allow cross-platform builds to initialize
+    conventional make variables like AR and ARFLAGS.
+  Added various improvements to the CI scripts in areas like version
+    consistency verification and text linting.
+  Added version consistency verification to pngtest.c also.
 
 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 43)
-#set(PNGLIB_SUBREVISION 0)
-set(PNGLIB_SUBREVISION "git")
+set(PNGLIB_SUBREVISION 0)
+#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 1.6.43.git
-====================================
+README for libpng version 1.6.43
+================================
 
 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 1.6.43.git.
+# Generated by GNU Autoconf 2.72 for libpng 1.6.43.
 #
 # 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='1.6.43.git'
-PACKAGE_STRING='libpng 1.6.43.git'
+PACKAGE_VERSION='1.6.43'
+PACKAGE_STRING='libpng 1.6.43'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1417,7 +1417,7 @@ 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 1.6.43.git to adapt to many kinds of systems.
+'configure' configures libpng 1.6.43 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1488,7 +1488,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.6.43.git:";;
+     short | recursive ) echo "Configuration of libpng 1.6.43:";;
    esac
   cat <<\_ACEOF
 
@@ -1685,7 +1685,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.6.43.git
+libpng configure 1.6.43
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1948,7 +1948,7 @@ 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 1.6.43.git, which was
+It was created by libpng $as_me 1.6.43, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3248,7 +3248,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.6.43.git'
+ VERSION='1.6.43'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -3381,7 +3381,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.6.43.git
+PNGLIB_VERSION=1.6.43
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=43
@@ -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 1.6.43.git, which was
+This file was extended by libpng $as_me 1.6.43, 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 1.6.43.git
+libpng config.status 1.6.43
 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],[1.6.43.git],[png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng],[1.6.43],[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=1.6.43.git
+PNGLIB_VERSION=1.6.43
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=43

libpng-manual.txt

@@ -9,7 +9,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.42 - January 2024
+ libpng version 1.6.36, December 2018, through 1.6.43 - February 2024
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2024 Cosmin Truta
 

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "January 29, 2024"
+.TH LIBPNG 3 "February 23, 2024"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.42
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.43
 
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -528,7 +528,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.42 - January 2024
+ libpng version 1.6.36, December 2018, through 1.6.43 - February 2024
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2024 Cosmin Truta
 

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "January 29, 2024"
+.TH LIBPNGPF 3 "February 23, 2024"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.42
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.43
 (private functions)
 
 .SH SYNOPSIS

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "January 29, 2024"
+.TH PNG 5 "February 23, 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_43_git Your_png_h_is_not_version_1_6_43_git;
+typedef png_libpng_version_1_6_43 Your_png_h_is_not_version_1_6_43;
 
 /* 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 1.6.43.git" PNG_STRING_NEWLINE \
+      "libpng version 1.6.43" 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 \