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+2020-03-14 Karl Berry <karl@freefriends.org>
+
+ Import VSX support from upstream to TL configure.
+ * configure.ac (powerpc-vsx): new AC_ARG_ENABLE, copied
+ from libpng-src/configure.ac.
+ * Makefile.am (nodist_libpng_a_SOURCES) [PNG_POWERPC_VSX]:
+ add powerpc/*.c, copied from libpng-src/Makefile.am.
+ From Johannes Hielscher, tlbuild mail 16 Feb 2020 23:09:54 (item 2).
+
+2019-05-03 Akira Kakuto <kakuto@w32tex.org>
+
+ Import libpng-1.6.37.
+ * version.ac: Adjust.
+
+2019-02-14 Johannes Hielscher <jhielscher@posteo.de>
+
+ * Makefile.am (nodist_libpng_a_SOURCES) [PNG_ARM_NEON]: add
+ @LIBPNG_TREE@/arm/palette_neon_intrinsics.c.
+ tlbuild 12 Feb 2019 00:07:11.
+
+2018-12-02 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.36.
+ * version.ac: Adjust.
+
+2018-07-17 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.35.
+ * version.ac: Adjust.
+
+2018-01-14 Karl Berry <karl@freefriends.org>
+
+ * configure.ac (-std=c89): reinstate check, now copying configure
+ block from upstream; reautoconf.
+
+2017-12-02 Karl Berry <karl@freefriends.org>
+
+ Import ARM support from upstream to TL configure.
+ * Makefile.am (nodist_libpng_a_SOURCES): add arm/*.[cS] files
+ per upstream Makefile.am.
+ * configure.ac (AM_PROG_AS),
+ (AC_ARG_ENABLE([arm-neon]): add.
+ Report from Johannes Hielscher, tlbuild mail 1 Nov 2017 02:39:55.
+
+2017-09-29 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.34.
+ * version.ac: Adjust.
+
+2017-08-24 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.32.
+ * version.ac: Adjust.
+
+2017-07-27 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.31.
+ * version.ac: Adjust.
+
+2017-06-28 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.30.
+ * version.ac: Adjust.
+
+2017-03-27 Karl Berry <karl@freefriends.org>
+
+ * Makefile.am (AM_TESTS_ENVIRONMENT): use instead of TESTS_ENVIRONMENT.
+ (EXTRA_DIST): TLpatches not Tlpatches.
+
+2017-03-16 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.29.
+ * version.ac: Adjust.
+
+2017-01-05 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.28.
+ * version.ac: Adjust.
+
+2016-12-29 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.27.
+ * version.ac: Adjust.
+
+2016-10-20 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.26.
+ * version.ac: Adjust.
+
+2016-09-01 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.25.
+ * version.ac: Adjust.
+
+2016-08-04 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.24.
+ * version.ac: Adjust.
+
+2016-06-09 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.23.
+ * version.ac: Adjust.
+
+2016-05-26 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.22.
+ * version.ac: Adjust.
+
+2016-03-30 Karl Berry <karl@tug.org>
+
+ * Makefile.am (AM_CPPFLAGS): remove LIBPNG_USER_CPPFLAGS per Mojca.
+ http://tug.org/pipermail/tlbuild/2016q1/003440.html
+
+2016-03-28 Karl Berry <karl@tug.org>
+
+ * configure.ac: insert check for -std=c89 from Mojca.
+
+2016-02-15 Karl Berry <karl@tug.org>
+
+ * libpng-PATCHES: rename from libpng-src-PATCHES.
+ * Makefile.am (EXTRA_DIST): likewise.
+
+2016-01-20 Karl Berry <karl@tug.org>
+
+ * Makefile.am (AM_CPPFLAGS): add LIBPNG_USER_CPPFLAGS for Mojca.
+ http://tug.org/pipermail/tlbuild/2016q1/003327.html
+
+2016-01-15 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.21.
+ * version.ac: Adjust.
+
+2015-12-28 Akira Kakuto <kakuto@fuk.kindai.ac.jp>
+
+ Import libpng-1.6.20.
+ * version.ac: Adjust.
+
+2015-08-01 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.18.
+ * version.ac: Adjust.
+
+2015-07-06 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am: Better dependencies for 'make check'.
+
+2015-03-27 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.17.
+ * version.ac: Adjust.
+
+2015-02-16 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am: Use the fragment ../../am/dist_hook.am.
+
+2014-12-22 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.16.
+ * version.ac: Adjust.
+
+2014-12-03 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * configure.ac: Added KPSE_COMPILER_VISIBILITY.
+ * Makefile.am [AM_CFLAGS]: Added $(VISIBILITY_CFLAGS).
+
+2014-11-21 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.15.
+ * version.ac: Adjust.
+
+2014-10-23 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.14.
+ * version.ac: Adjust.
+
+2014-08-22 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.13.
+ * version.ac: Adjust.
+
+2014-06-17 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.12.
+ * version.ac: Adjust.
+ * Makefile.am: Drop the obsolete ACLOCAL_AMFLAGS.
+
+2014-03-15 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.10.
+ * version.ac: Adjust.
+
+2014-02-07 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.9.
+ * version.ac: Adjust.
+
+2014-01-02 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.8.
+ * version.ac: Adjust.
+
+2012-07-06 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am: Use ../../am/reconfig.am and ../../am/rebuild.am.
+
+2013-07-05 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * include/Makefile.am: Moved Makefile fragments to ../../am/.
+
+2013-06-29 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.17.
+ * version.ac: Adjust.
+
+2013-06-26 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am (SUBDIRS): Build the library first.
+
+2013-06-06 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.16 (downgrade).
+ * version.ac: Adjust.
+
+2013-06-03 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.2.
+ * version.ac: Adjust.
+
+2013-04-05 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.1.
+ * version.ac: Adjust.
+
+2013-02-16 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.6.0.
+ * version.ac: Adjust.
+
+2013-01-29 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am: Allow subdir-objects.
+
+2012-12-15 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * configure.ac: Use KPSE_BASIC to enable silent rules.
+
+2012-11-16 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am: Avoid use of deprecated INCLUDES.
+
+2012-09-28 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.13.
+ * version.ac: Adjust.
+
+2012-07-11 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.12.
+ * version.ac: Adjust.
+
+2012-03-30 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.10.
+ * version.ac: Adjust.
+
+2012-02-24 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * include/Makefile.am: Use ../am/hdr_links.am.
+
+2012-02-23 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.9.
+ * version.ac: Adjust.
+
+2011-12-20 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.7.
+ * version.ac: Adjust.
+ * configure.ac: Add AC_C_RESTRICT as in libpng-1.5.7.
+
+2011-10-05 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.5.
+ * version.ac: Adjust.
+
+2011-07-21 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.4.
+ * version.ac: New file defining the libpng version.
+ * configure.ac: Adapt.
+
+2011-04-13 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.5.2.
+ * configure.ac, include/Makefile.am: Adjust.
+
+2010-09-27 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.4.4.
+
+2010-03-03 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * Makefile.am, libpng-*-PATCHES/TL-Changes: Remove ltmain.sh.
+ * configure.ac: Remove libpng_major, libpng_minor, and
+ libpng_micro, we only use libpng_version.
+
+2009-11-10 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.2.40.
+
+2009-08-13 Martin Schröder <martin@oneiros.de>
+
+ Import libpng-1.2.39.
+
+ * libpng-1.2.38-PATCHES: Remove our one patch
+
+2009-07-23 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * libpng-1.2.38-PATCHES: New directory to hold patches, if any,
+ applied to the distributed source tree.
+ * Makefile.am: Adjust.
+
+2009-07-17 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.2.38.
+
+ * configure.ac: switch libpng version number.
+ * svn mv libpng-1.2.37 libpng-1.2.38: update source tree.
+ * update files in libpng-1.2.38.
+
+ * libpng-1.2.38/png.c (png_64bit_product): declare as static.
+
+2009-06-19 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ * configure.ac: enable compiler warnings.
+ * Makefile.am (AM_CFLAGS): enable compiler warnings.
+
+ * libpng-1.2.37/png.c (png_64bit_product): declare as static.
+
+2009-06-04 Martin Schröder <martin@oneiros.de>
+
+ Import libpng-1.2.37.
+
+ * configure.ac: switch libpng version number.
+ * svn mv libpng-1.2.36 libpng-1.2.37: update source tree.
+ * update files in libpng-1.2.37.
+
+2009-05-08 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.2.36.
+
+ * configure.ac: switch libpng version number.
+ * libpng-1.2.36/ (new): new source tree.
+ * libpng-1.2.35/ (removed): old source tree.
+
+2009-03-30 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Import libpng-1.2.35.
+
+ * configure.ac: switch libpng version number.
+ * libpng-1.2.35/ (new): new source tree.
+ * libpng-1.2.34/ (removed): old source tree.
+
+2009-03-20 Peter Breitenlohner <peb@mppmu.mpg.de>
+
+ Adapt to TL2009 build system.
+
+(This ChangeLog file is public domain.)