Release libpng version 1.6.49

ANNOUNCE

@@ -1,13 +1,5 @@
-libpng 1.6.49.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 1.6.48 - April 30, 2025
-==============================
+libpng 1.6.49 - June 12, 2025
+=============================
 
 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-1.6.48.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.48.tar.gz (deflate-compressed)
+ * libpng-1.6.49.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.49.tar.gz (deflate-compressed)
 
 Source files with CRLF line endings (for Windows):
 
- * lpng1648.7z (LZMA-compressed, recommended)
- * lpng1648.zip (deflate-compressed)
+ * lpng1649.7z (LZMA-compressed, recommended)
+ * lpng1649.zip (deflate-compressed)
 
 Other information:
 
@@ -33,17 +25,13 @@ Other information:
  * TRADEMARK.md
 
 
-Changes from version 1.6.47 to version 1.6.48
+Changes from version 1.6.48 to version 1.6.49
 ---------------------------------------------
 
- * Fixed the floating-point version of the mDCv setter `png_set_mDCv`.
-   (Reported by Mohit Bakshi; fixed by John Bowler)
- * Added #error directives to discourage the inclusion of private
-   libpng implementation header files in PNG-supporting applications.
- * Added the CMake build option `PNG_LIBCONF_HEADER`, to be used as an
-   alternative to `DFA_XTRA`.
- * Removed the Travis CI configuration files, with heartfelt thanks for
-   their generous support of our project over the past five years!
+ * Added SIMD-optimized code for the RISC-V Vector Extension (RVV).
+   (Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil)
+ * Added various fixes and improvements to the build scripts and to
+   the sample code.
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

CHANGES

@@ -6261,7 +6261,11 @@ Version 1.6.48 [April 30, 2025]
   Removed the Travis CI configuration files, with heartfelt thanks for
     their generous support of our project over the past five years!
 
-Version 1.6.49 [TODO]
+Version 1.6.49 [June 12, 2025]
+  Added SIMD-optimized code for the RISC-V Vector Extension (RVV).
+    (Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil)
+  Added various fixes and improvements to the build scripts and to
+    the sample code.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
 Subscription is required; visit

CMakeLists.txt

@@ -19,8 +19,8 @@ cmake_minimum_required(VERSION 3.14...4.0)
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 6)
 set(PNGLIB_REVISION 49)
-#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 1.6.49.git
-====================================
+README for libpng version 1.6.49
+================================
 
 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 1.6.49.git.
+# Generated by GNU Autoconf 2.72 for libpng 1.6.49.
 #
 # 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='1.6.49.git'
-PACKAGE_STRING='libpng 1.6.49.git'
+PACKAGE_VERSION='1.6.49'
+PACKAGE_STRING='libpng 1.6.49'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 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.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures libpng 1.6.49.git to adapt to many kinds of systems.
+'configure' configures libpng 1.6.49 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1495,7 +1495,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.6.49.git:";;
+     short | recursive ) echo "Configuration of libpng 1.6.49:";;
    esac
   cat <<\_ACEOF
 
@@ -1698,7 +1698,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.6.49.git
+libpng configure 1.6.49
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1961,7 +1961,7 @@ 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 1.6.49.git, which was
+It was created by libpng $as_me 1.6.49, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3446,7 +3446,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.6.49.git'
+ VERSION='1.6.49'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -3665,7 +3665,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.6.49.git
+PNGLIB_VERSION=1.6.49
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=49
@@ -16419,7 +16419,7 @@ 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 1.6.49.git, which was
+This file was extended by libpng $as_me 1.6.49, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -16487,7 +16487,7 @@ ac_cs_config_escaped=`printf "%s\n" "$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 1.6.49.git
+libpng config.status 1.6.49
 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],[1.6.49.git],[png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng],[1.6.49],[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=1.6.49.git
+PNGLIB_VERSION=1.6.49
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=49

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 1.6.48 - April 2025
+ libpng version 1.6.36, December 2018, through 1.6.49 - June 2025
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2025 Cosmin Truta
 

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "May 1, 2025"
+.TH LIBPNG 3 "June 12, 2025"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49.git
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49
 
 .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 1.6.48 - April 2025
+ libpng version 1.6.36, December 2018, through 1.6.49 - June 2025
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2025 Cosmin Truta
 

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "May 1, 2025"
+.TH LIBPNGPF 3 "June 12, 2025"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49.git
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49
 
 .SH SYNOPSIS
 \fB#include "pngpriv.h"\fP

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "May 1, 2025"
+.TH PNG 5 "June 12, 2025"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 
@@ -20,10 +20,10 @@ matching on heterogeneous platforms.
 .SH "SEE ALSO"
 .BR "libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
 .LP
-PNG Specification (Third Edition) Candidate Recommendation, March 2025:
+PNG Specification (Third Edition) Proposed Recommendation, May 2025:
 .IP
 .br
-https://www.w3.org/TR/2025/CR-png-3-20250313/
+https://www.w3.org/TR/2025/PR-png-3-20250515/
 .LP
 PNG Specification (Second Edition), November 2003:
 .IP

png.c

@@ -13,7 +13,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_49_git Your_png_h_is_not_version_1_6_49_git;
+typedef png_libpng_version_1_6_49 Your_png_h_is_not_version_1_6_49;
 
 /* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the
  * 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
 #else
    return PNG_STRING_NEWLINE \
-      "libpng version 1.6.49.git" PNG_STRING_NEWLINE \
+      "libpng version 1.6.49" PNG_STRING_NEWLINE \
       "Copyright (c) 2018-2025 Cosmin Truta" PNG_STRING_NEWLINE \
       "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
       PNG_STRING_NEWLINE \

png.h

@@ -1,6 +1,6 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.49.git
+ * libpng version 1.6.49
  *
  * Copyright (c) 2018-2025 Cosmin Truta
  * 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 0.97, January 1998, through 1.6.35, July 2018:
  *     Glenn Randers-Pehrson
- *   libpng versions 1.6.36, December 2018, through 1.6.48, April 2025:
+ *   libpng versions 1.6.36, December 2018, through 1.6.49, June 2025:
  *     Cosmin Truta
  *   See also "Contributing Authors", below.
  */
@@ -238,7 +238,7 @@
  *    ...
  *    1.5.30                  15    10530  15.so.15.30[.0]
  *    ...
- *    1.6.48                  16    10648  16.so.16.48[.0]
+ *    1.6.49                  16    10649  16.so.16.49[.0]
  *
  *    Henceforth the source version will match the shared-library major and
  *    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 */
-#define PNG_LIBPNG_VER_STRING "1.6.49.git"
+#define PNG_LIBPNG_VER_STRING "1.6.49"
 #define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
 
 /* 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
  * development version.
  */
-#define PNG_LIBPNG_VER_BUILD 1
+#define PNG_LIBPNG_VER_BUILD 0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA               1
@@ -307,7 +307,7 @@
 #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.
@@ -316,7 +316,7 @@
  * From version 1.0.1 it is:
  * XXYYZZ, where XX=major, YY=minor, ZZ=release
  */
-#define PNG_LIBPNG_VER 10649 /* 1.6.49.git */
+#define PNG_LIBPNG_VER 10649 /* 1.6.49 */
 
 /* Library configuration: these options cannot be changed after
  * 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
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_6_49_git;
+typedef char* png_libpng_version_1_6_49;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *

pngconf.h

@@ -1,6 +1,6 @@
 /* pngconf.h - machine-configurable file for libpng
  *
- * libpng version 1.6.49.git
+ * libpng version 1.6.49
  *
  * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson

pngtest.c

@@ -50,7 +50,7 @@
 #define STDERR stdout
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_49_git Your_png_h_is_not_version_1_6_49_git;
+typedef png_libpng_version_1_6_49 Your_png_h_is_not_version_1_6_49;
 
 /* Ensure that all version numbers in png.h are consistent with one another. */
 #if (PNG_LIBPNG_VER != PNG_LIBPNG_VER_MAJOR * 10000 + \

scripts/libpng-config-head.in

@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.6.49.git
+version=1.6.49
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.6.49.git
+Version: 1.6.49
 Libs: -L${libdir} -lpng16
 Cflags: -I${includedir}

scripts/pnglibconf.h.prebuilt

@@ -1,6 +1,6 @@
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.6.49.git */
+/* libpng version 1.6.49 */
 
 /* Copyright (c) 2018-2025 Cosmin Truta */
 /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */