[libpng15] Imported from libpng-1.5.11rc05.tar

2025-07-10 18:04:09 +02:00 · 2012-06-07 10:03:46 -05:00
74 changed files with 2125 additions and 2856 deletions
--- a/61
+++ b/61
@@ -1,5 +1,5 @@

-Libpng 1.5.15beta01 - February 5, 2013
+Libpng 1.5.11rc05 - June 7, 2012

 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,33 +9,60 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script

-   1.5.15beta01.tar.xz (LZMA-compressed, recommended)
-   1.5.15beta01.tar.gz
-   1.5.15beta01.tar.bz2
+   1.5.11rc05.tar.xz (LZMA-compressed, recommended)
+   1.5.11rc05.tar.gz
+   1.5.11rc05.tar.bz2

 Source files with CRLF line endings (for Windows), without the
 "configure" script

-   lp1515b01.7z  (LZMA-compressed, recommended)
-   lp1515b01.zip
+   lp1511r05.7z  (LZMA-compressed, recommended)
+   lp1511r05.zip

 Other information:

-   1.5.15beta01-README.txt
-   1.5.15beta01-LICENSE.txt
+   1.5.11rc05-README.txt
+   1.5.11rc05-LICENSE.txt

-Changes since the last public release (1.5.14):
+Changes since the last public release (1.5.10):

-Version 1.5.15beta01 [February 5, 2013]
-  Enabled renaming of the extern (but not DLL exported) ARM filter functions.
-    Also enabled inclusion of pngpriv.h in non-C files by preventing C/C++
-    specific definitions if PNG_VERSION_INFO_ONLY is defined.
-  Added png_get_palette_max() function.
+Version 1.5.11beta01 [April 28, 2012]
+  Revised scripts/makefile.darwin: use system zlib; remove quotes around
+    architecture list; add missing ppc architecture; add architecture options
+    to shared library link; don't try to create a shared lib based on missing
+    RELEASE variable.
+  Enable png_set_check_for_invalid_index() for both read and write.
+  Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED/#endif in pngpriv.h around
+    declaration of png_handle_unknown().
+  Added -lssp_nonshared in a comment in scripts/makefile.freebsd
+    and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE.

-Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+Version 1.5.11rc01 [May 23, 2012]
+  No changes.
+
+Version 1.5.11rc02 [May 29, 2012]
+  Fixed some typos in comments.
+  Revised CMakeLists.txt to not attempt to make a symlink under mingw.
+  Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale),
+    and renamed three whose names were inconsistent with those in
+    pngsuite/README.txt.
+
+Version 1.5.11rc03 [June 4, 2012]
+  Do not depend upon a GCC feature macro being available for use in generating
+    the linker mapfile symbol prefix.
+  Made fixes for new optimization warnings from gcc 4.7.0. The compiler
+    performs an optimization which is safe; however it then warns about it.
+    Changing the type of 'palette_number' in pngvalid.c removes the warning.
+
+Version 1.5.11rc04 [June 6, 2012]
+  Improved efficiency of new do_check_palette_indexes() function.
+
+Version 1.5.11rc05 [June 7, 2012]
+  Don't check palette indexes if num_palette is 0 (as it can be in MNG files).
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe)
-or to glennrp at users.sourceforge.net
+to subscribe) or to glennrp at users.sourceforge.net

 Glenn R-P
--- a/111
+++ b/111
@@ -3852,7 +3852,7 @@ Version 1.5.10beta05 [March 10, 2012]
 Version 1.5.10 [March 29, 2012]
  Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice.
  Revised png_set_text_2() to avoid potential memory corruption (fixes
-    CVE-2011-3048, also known as CVE-2012-3425).
+    CVE-2011-3048).

 Version 1.5.11beta01 [April 28, 2012]
  Revised scripts/makefile.darwin: use system zlib; remove quotes around
@@ -3879,7 +3879,7 @@ Version 1.5.11rc03 [June 4, 2012]
  Do not depend upon a GCC feature macro being available for use in generating
    the linker mapfile symbol prefix.
  Made fixes for new optimization warnings from gcc 4.7.0. The compiler
-    performed an optimization which is safe but then warned about it.
+    performs an optimization which is safe; however it then warns about it.
    Changing the type of 'palette_number' in pngvalid.c removes the warning.

 Version 1.5.11rc04 [June 6, 2012]
@@ -3888,113 +3888,6 @@ Version 1.5.11rc04 [June 6, 2012]
 Version 1.5.11rc05 [June 7, 2012]
  Don't check palette indexes if num_palette is 0 (as it can be in MNG files).

-Version 1.5.11 [June 14, 2012]
-  Include zlib.h in contrib/gregbook and contrib/visupng examples.
-
-Version 1.5.12 [July 11, 2012]
-  Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
-    depends on configure, which is not included in those archives.
-  Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
-
-Version 1.5.13beta01 [August 8, 2012]
-  Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.
-  Removed references to png_zalloc() and png_zfree() from the manual.
-  Revised PNG_FP_EXPORT and PNG_FIXED_EXPORT macros to avoid generating
-    lone semicolons (patch ported from libpng-1.6.0beta11).
-
-Version 1.5.13beta02 [September 10, 2012]
-  Corrected handling of the image array and the row_pointers array in example.c
-  When png_set_filler is used to strip a filler channel during write, the
-    code prior to 1.5 would ignore the case where the output required an
-    alpha channel or when the output was a palettized PNG.  In libpng-1.5 the
-    ignorance was lost and libpng proceeded to strip the channel resulting
-    in a bad (potential memory overwrite) failure later.  This reverts
-    the behavior to the pre-1.5 state but issues a warning. libpng-1.6 is
-    expected to issue an error on the erroneous png_set_filler call.
-  Use png_memset() consistently (pngmem.c contained some bare "memset" calls).
-
-Version 1.5.13rc01 [September 17, 2012]
-  No changes.
-
-Version 1.5.13 [September 27, 2012]
-  No changes.
-
-Version 1.5.14beta01 [October 24, 2012]
-  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
-  Warn about the incorrect runtime library setting for VS2010 debug DLL builds.
-  Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
-    pngrtran.c (Domani Hannes).
-
-Version 1.5.14beta02 [omitted]
-
-Version 1.5.14beta03 [December 15, 2012]
-  Added missing "-" in front of DNO_GZIP in contrib/pngminim/*/makefile.
-  Check for png_ptr==NULL earlier in png_zalloc().
-  Ignore, with a warning, out-of-range value of num_trans in png_set_tRNS().
-  Rearranged building of ARM NEON optimizations. The ARM specific code is
-    split out entirely to the arm subdirectory and changes to configure.ac and
-    Makefile.am to add new stuff are reduced.  Now material code changes,
-    although for build test purposes, --enable-arm-neon now builds on non-ARM
-    systems.
-  Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.12.5.
-  Fixed cases of unquoted DESTDIR in Makefile.am
-  Fixed a minor bug in types to malloc and major bug in handling compressed
-    iTXt. Compressed iTXt could not be handled.
-
-Version 1.5.14beta04 [December 19, 2012]
-  Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
-  Disassembled the version number in scripts/options.awk (necessary for
-    building on SunOs).
-
-Version 1.5.14beta05 [December 23, 2012]
-  Fixed Windows build issues, enabled ARM compilation. Various warnings issued
-    by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old
-    GCCs.) ARM support is enabled by default in zlib.props (unsupported by
-    Microsoft) and ARM compilation is made possible by deleting the check for
-    x86. The test programs cannot be run because they are not signed.
-
-Version 1.5.14beta06 [January 1, 2013]
-  Discontinued distributing libpng-1.5.14-1.5.13-diff.txt and similar.
-  Fixed 'make distcheck' on SUN OS - libpng.so was not being removed
-
-Version 1.5.14beta07 [January 6, 2012]
-  Replaced AM_CONFIG_HEADER(config.h) with AC_CONFIG_HEADERS([config.h])
-    in configure.ac
-  De-configured build fixes to make a range of deconfiguration options (such
-    as switching off read or write support) work in more cases.  Also upgraded
-    pngtest and pngvalid to the libpng 1.6 versions (with some modifications)
-    which provide more extensive testing.  Replaced pngtest.png because pngtest
-    writes the ancillary chunks in a different order.
-
-Version 1.5.14beta08 [January 10, 2013]
-  Check validity of "num_unknowns" parameter of png_set_unknown_chunks()
-    (Bug report from yuris).
-
-Version 1.5.14rc01 [January 17, 2013]
-  No changes.
-
-Version 1.5.14rc02 [January 17, 2013]
-  Revised test for validity of "num_unknowns" to eliminate compiler warnings.
-
-Version 1.5.14rc03 [January 18, 2013]
-  Check the validity of the "nentries" parameter of png_set_sPLT() and the
-  "num_text" parameter of png_set_text_2().
-
-Version 1.5.14 [January 24, 2013]
-  Removed an obsolete line from the manual.
-
-Version 1.5.15beta01 [February 5, 2013]
-  Enabled renaming of the extern (but not DLL exported) ARM filter functions.
-    Also enabled inclusion of pngpriv.h in non-C files by preventing C/C++
-    specific definitions if PNG_VERSION_INFO_ONLY is defined.
-  Added png_get_palette_max() function.
-
-  ===========================================================================
-                       NOTICE November 17, 2012:
-     The location of the git repository at SourceForge has changed.
-               Visit http://libpng.sf.net/ for details.
-  ===========================================================================
-
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,7 +35,7 @@ enable_testing()

 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 5)
-set(PNGLIB_RELEASE 15)
+set(PNGLIB_RELEASE 11)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})

@@ -225,7 +225,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
 # SET UP LINKS
 if(PNG_SHARED)
  set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.15beta01
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.11rc05
    VERSION 15.${PNGLIB_RELEASE}.0
    SOVERSION 15
    CLEAN_DIRECT_OUTPUT 1)
--- a/6
+++ b/6
@@ -10,8 +10,8 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.5.15beta01, February 5, 2013, are
-Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.5.11rc05, June 7, 2012, are
+Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors

@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 5, 2013
+June 7, 2012
--- a/Makefile.am
+++ b/Makefile.am
@@ -41,8 +41,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
 	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa

 if PNG_ARM_NEON
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
-	arm/filter_neon.S
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/filter_neon.S
 endif

 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
@@ -198,24 +197,22 @@ dist-hook:

 # install the .../include headers as links to the new ones
 install-data-hook:
-	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
-	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
-	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
+	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
 		pngconf.h
-	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
 		pnglibconf.h
-	cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
-	cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
+	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
+	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc

 # do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
 install-exec-hook:
-	cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
-	cd '$(DESTDIR)$(bindir)';\
-	   $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
+	cd $(DESTDIR)$(bindir); rm -f libpng-config
+	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
 	@set -x;\
-	cd '$(DESTDIR)$(libdir)';\
-	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
-	   sl dylib dll.a; do\
+	cd $(DESTDIR)$(libdir);\
+	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ sl dylib dll.a; do\
 		rm -f libpng.$$ext;\
                if test -f $(PNGLIB_BASENAME).$$ext; then\
                       $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
@@ -223,13 +220,9 @@ install-exec-hook:
 	done

 uninstall-hook:
-	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
-	rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
-	rm -f '$(DESTDIR)$(bindir)/libpng-config'
-	rm -f '$(DESTDIR)$(libdir)/libpng.a'
-	rm -f '$(DESTDIR)$(libdir)/libpng.la'
-	rm -f '$(DESTDIR)$(libdir)/libpng.so'
-	rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
-	rm -f '$(DESTDIR)$(libdir)/libpng.sl'
-	rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
-	rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
+	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
+	rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
+	rm -f $(DESTDIR)$(bindir)/libpng-config
+	rm -f $(DESTDIR)$(libdir)/libpng.a
+	rm -f $(DESTDIR)$(libdir)/libpng.la
+	rm -f $(DESTDIR)$(libdir)/libpng.dll.a
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,8 +1,9 @@
-# Makefile.in generated by automake 1.12.5 from Makefile.am.
+# Makefile.in generated by automake 1.11.2 from Makefile.am.
 # @configure_input@

-# Copyright (C) 1994-2012 Free Software Foundation, Inc.
-
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -22,23 +23,6 @@


 VPATH = @srcdir@
-am__make_dryrun = \
-  { \
-    am__dry=no; \
-    case $$MAKEFLAGS in \
-      *\\[\ \	]*) \
-        echo 'am--echo: ; @echo "AM"  OK' | $(MAKE) -f - 2>/dev/null \
-          | grep '^AM OK$$' >/dev/null || am__dry=yes;; \
-      *) \
-        for am__flg in $$MAKEFLAGS; do \
-          case $$am__flg in \
-            *=*|--*) ;; \
-            *n*) am__dry=yes; break;; \
-          esac; \
-        done;; \
-    esac; \
-    test $$am__dry = yes; \
-  }
 pkgdatadir = $(datadir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
 pkglibexecdir = $(libexecdir)/@PACKAGE@
@@ -57,9 +41,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 check_PROGRAMS = pngtest$(EXEEXT) pngvalid$(EXEEXT)
-@PNG_ARM_NEON_TRUE@am__append_1 = arm/arm_init.c\
-@PNG_ARM_NEON_TRUE@	arm/filter_neon.S
-
+@PNG_ARM_NEON_TRUE@am__append_1 = arm/filter_neon.S

 #   Versioned symbols and restricted exports
@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_TRUE@am__append_2 = -Wl,-M -Wl,libpng.vers
@@ -120,10 +102,8 @@ am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST = png.c \
 	pngerror.c pngget.c pngmem.c pngpread.c pngread.c pngrio.c \
 	pngrtran.c pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c \
 	pngwtran.c pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h \
-	pngpriv.h pngstruct.h pngusr.dfa arm/arm_init.c \
-	arm/filter_neon.S
-@PNG_ARM_NEON_TRUE@am__objects_1 = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo \
-@PNG_ARM_NEON_TRUE@	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo
+	pngpriv.h pngstruct.h arm/filter_neon.S pngusr.dfa
+@PNG_ARM_NEON_TRUE@am__objects_1 = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo
 am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =  \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.lo \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo \
@@ -181,11 +161,6 @@ SOURCES = $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
 DIST_SOURCES =  \
 	$(am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST) \
 	$(pngtest_SOURCES) $(pngvalid_SOURCES)
-am__can_run_installinfo = \
-  case $$AM_UPDATE_INFO_DIR in \
-    n|no|NO) false;; \
-    *) (install-info --version) >/dev/null 2>&1;; \
-  esac
 man3dir = $(mandir)/man3
 man5dir = $(mandir)/man5
 NROFF = nroff
@@ -194,25 +169,17 @@ DATA = $(pkgconfig_DATA)
 HEADERS = $(nodist_pkginclude_HEADERS) $(pkginclude_HEADERS)
 ETAGS = etags
 CTAGS = ctags
-CSCOPE = cscope
-AM_RECURSIVE_TARGETS = cscope
-am__tty_colors_dummy = \
-  mgn= red= grn= lgn= blu= brg= std=; \
-  am__color_tests=no
-am__tty_colors = $(am__tty_colors_dummy)
+am__tty_colors = \
+red=; grn=; lgn=; blu=; std=
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
 am__remove_distdir = \
-  if test -d "$(distdir)"; then \
-    find "$(distdir)" -type d ! -perm -200 -exec chmod u+w {} ';' \
-      && rm -rf "$(distdir)" \
-      || { sleep 5 && rm -rf "$(distdir)"; }; \
-  else :; fi
-am__post_remove_distdir = $(am__remove_distdir)
+  { test ! -d "$(distdir)" \
+    || { find "$(distdir)" -type d ! -perm -200 -exec chmod u+w {} ';' \
+         && rm -fr "$(distdir)"; }; }
 DIST_ARCHIVES = $(distdir).tar.gz
 GZIP_ENV = --best
-DIST_TARGETS = dist-gzip
 distuninstallcheck_listfiles = find . -type f -print
 am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
  | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
@@ -489,6 +456,7 @@ libpng-config: $(top_builddir)/config.status $(srcdir)/libpng-config.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	@$(NORMAL_INSTALL)
+	test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
 	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
 	list2=; for p in $$list; do \
 	  if test -f $$p; then \
@@ -496,8 +464,6 @@ install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	  else :; fi; \
 	done; \
 	test -z "$$list2" || { \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
 	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
 	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
 	}
@@ -513,15 +479,13 @@ uninstall-libLTLIBRARIES:

 clean-libLTLIBRARIES:
 	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
-	@list='$(lib_LTLIBRARIES)'; \
-	locs=`for p in $$list; do echo $$p; done | \
-	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
-	      sort -u`; \
-	test -z "$$locs" || { \
-	  echo rm -f $${locs}; \
-	  rm -f $${locs}; \
-	}
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la: $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES) $(EXTRA_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES) 
+	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la: $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES) 
 	$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LINK) -rpath $(libdir) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LIBADD) $(LIBS)

 clean-checkPROGRAMS:
@@ -532,19 +496,16 @@ clean-checkPROGRAMS:
 	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
 	echo " rm -f" $$list; \
 	rm -f $$list
-pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES) $(EXTRA_pngtest_DEPENDENCIES) 
+pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES) 
 	@rm -f pngtest$(EXEEXT)
 	$(LINK) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
-pngvalid$(EXEEXT): $(pngvalid_OBJECTS) $(pngvalid_DEPENDENCIES) $(EXTRA_pngvalid_DEPENDENCIES) 
+pngvalid$(EXEEXT): $(pngvalid_OBJECTS) $(pngvalid_DEPENDENCIES) 
 	@rm -f pngvalid$(EXEEXT)
 	$(LINK) $(pngvalid_OBJECTS) $(pngvalid_LDADD) $(LIBS)
 install-binSCRIPTS: $(bin_SCRIPTS)
 	@$(NORMAL_INSTALL)
+	test -z "$(bindir)" || $(MKDIR_P) "$(DESTDIR)$(bindir)"
 	@list='$(bin_SCRIPTS)'; test -n "$(bindir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
-	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
@@ -580,7 +541,6 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c

-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Plo@am__quote@
@@ -754,13 +714,6 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo: pngwutil.c
@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c

-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo: arm/arm_init.c
-@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo `test -f 'arm/arm_init.c' || echo '$(srcdir)/'`arm/arm_init.c
-@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='arm/arm_init.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo `test -f 'arm/arm_init.c' || echo '$(srcdir)/'`arm/arm_init.c
-
 pngvalid.o: contrib/libtests/pngvalid.c
@am__fastdepCC_TRUE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT pngvalid.o -MD -MP -MF $(DEPDIR)/pngvalid.Tpo -c -o pngvalid.o `test -f 'contrib/libtests/pngvalid.c' || echo '$(srcdir)/'`contrib/libtests/pngvalid.c
@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/pngvalid.Tpo $(DEPDIR)/pngvalid.Po
@@ -785,18 +738,11 @@ distclean-libtool:
 	-rm -f libtool config.lt
 install-man3: $(dist_man_MANS)
 	@$(NORMAL_INSTALL)
-	@list1=''; \
-	list2='$(dist_man_MANS)'; \
-	test -n "$(man3dir)" \
-	  && test -n "`echo $$list1$$list2`" \
-	  || exit 0; \
-	echo " $(MKDIR_P) '$(DESTDIR)$(man3dir)'"; \
-	$(MKDIR_P) "$(DESTDIR)$(man3dir)" || exit 1; \
-	{ for i in $$list1; do echo "$$i"; done;  \
-	if test -n "$$list2"; then \
-	  for i in $$list2; do echo "$$i"; done \
-	    | sed -n '/\.3[a-z]*$$/p'; \
-	fi; \
+	test -z "$(man3dir)" || $(MKDIR_P) "$(DESTDIR)$(man3dir)"
+	@list=''; test -n "$(man3dir)" || exit 0; \
+	{ for i in $$list; do echo "$$i"; done; \
+	l2='$(dist_man_MANS)'; for i in $$l2; do echo "$$i"; done | \
+	  sed -n '/\.3[a-z]*$$/p'; \
 	} | while read p; do \
 	  if test -f $$p; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; echo "$$p"; \
@@ -828,18 +774,11 @@ uninstall-man3:
 	dir='$(DESTDIR)$(man3dir)'; $(am__uninstall_files_from_dir)
 install-man5: $(dist_man_MANS)
 	@$(NORMAL_INSTALL)
-	@list1=''; \
-	list2='$(dist_man_MANS)'; \
-	test -n "$(man5dir)" \
-	  && test -n "`echo $$list1$$list2`" \
-	  || exit 0; \
-	echo " $(MKDIR_P) '$(DESTDIR)$(man5dir)'"; \
-	$(MKDIR_P) "$(DESTDIR)$(man5dir)" || exit 1; \
-	{ for i in $$list1; do echo "$$i"; done;  \
-	if test -n "$$list2"; then \
-	  for i in $$list2; do echo "$$i"; done \
-	    | sed -n '/\.5[a-z]*$$/p'; \
-	fi; \
+	test -z "$(man5dir)" || $(MKDIR_P) "$(DESTDIR)$(man5dir)"
+	@list=''; test -n "$(man5dir)" || exit 0; \
+	{ for i in $$list; do echo "$$i"; done; \
+	l2='$(dist_man_MANS)'; for i in $$l2; do echo "$$i"; done | \
+	  sed -n '/\.5[a-z]*$$/p'; \
 	} | while read p; do \
 	  if test -f $$p; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; echo "$$p"; \
@@ -871,11 +810,8 @@ uninstall-man5:
 	dir='$(DESTDIR)$(man5dir)'; $(am__uninstall_files_from_dir)
 install-pkgconfigDATA: $(pkgconfig_DATA)
 	@$(NORMAL_INSTALL)
+	test -z "$(pkgconfigdir)" || $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)"
 	@list='$(pkgconfig_DATA)'; test -n "$(pkgconfigdir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgconfigdir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)" || exit 1; \
-	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -892,11 +828,8 @@ uninstall-pkgconfigDATA:
 	dir='$(DESTDIR)$(pkgconfigdir)'; $(am__uninstall_files_from_dir)
 install-nodist_pkgincludeHEADERS: $(nodist_pkginclude_HEADERS)
 	@$(NORMAL_INSTALL)
+	test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
 	@list='$(nodist_pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgincludedir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)" || exit 1; \
-	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -913,11 +846,8 @@ uninstall-nodist_pkgincludeHEADERS:
 	dir='$(DESTDIR)$(pkgincludedir)'; $(am__uninstall_files_from_dir)
 install-pkgincludeHEADERS: $(pkginclude_HEADERS)
 	@$(NORMAL_INSTALL)
+	test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
 	@list='$(pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
-	if test -n "$$list"; then \
-	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgincludedir)'"; \
-	  $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)" || exit 1; \
-	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -982,32 +912,8 @@ GTAGS:
 	  && $(am__cd) $(top_srcdir) \
 	  && gtags -i $(GTAGS_ARGS) "$$here"

-cscope: cscope.files
-	test ! -s cscope.files \
-	  || $(CSCOPE) -b -q $(AM_CSCOPEFLAGS) $(CSCOPEFLAGS) -i cscope.files $(CSCOPE_ARGS)
-
-clean-cscope:
-	-rm -f cscope.files
-
-cscope.files: clean-cscope  cscopelist
-
-cscopelist:  $(HEADERS) $(SOURCES) $(LISP)
-	list='$(SOURCES) $(HEADERS) $(LISP)'; \
-	case "$(srcdir)" in \
-	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
-	  *) sdir=$(subdir)/$(srcdir) ;; \
-	esac; \
-	for i in $$list; do \
-	  if test -f "$$i"; then \
-	    echo "$(subdir)/$$i"; \
-	  else \
-	    echo "$$sdir/$$i"; \
-	  fi; \
-	done >> $(top_builddir)/cscope.files
-
 distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
-	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files

 check-TESTS: $(TESTS)
 	@failed=0; all=0; xfail=0; xpass=0; skip=0; \
@@ -1019,7 +925,7 @@ check-TESTS: $(TESTS)
 	    if test -f ./$$tst; then dir=./; \
 	    elif test -f $$tst; then dir=; \
 	    else dir="$(srcdir)/"; fi; \
-	    if $(TESTS_ENVIRONMENT) $${dir}$$tst $(AM_TESTS_FD_REDIRECT); then \
+	    if $(TESTS_ENVIRONMENT) $${dir}$$tst; then \
 	      all=`expr $$all + 1`; \
 	      case " $(XFAIL_TESTS) " in \
 	      *[\ \	]$$tst[\ \	]*) \
@@ -1109,10 +1015,10 @@ distdir: $(DISTFILES)
 	    if test -f "$$d$$p"; then echo "$$d$$p"; else :; fi; done`; \
 	  if test -n "$$list" && \
 	    grep 'ab help2man is required to generate this page' $$list >/dev/null; then \
-	    echo "error: found man pages containing the 'missing help2man' replacement text:" >&2; \
+	    echo "error: found man pages containing the \`missing help2man' replacement text:" >&2; \
 	    grep -l 'ab help2man is required to generate this page' $$list | sed 's/^/         /' >&2; \
 	    echo "       to fix them, install help2man, remove and regenerate the man pages;" >&2; \
-	    echo "       typically 'make maintainer-clean' will remove them" >&2; \
+	    echo "       typically \`make maintainer-clean' will remove them" >&2; \
 	    exit 1; \
 	  else :; fi; \
 	else :; fi
@@ -1159,36 +1065,36 @@ distdir: $(DISTFILES)
 	|| chmod -R a+r "$(distdir)"
 dist-gzip: distdir
 	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)

 dist-bzip2: distdir
 	tardir=$(distdir) && $(am__tar) | BZIP2=$${BZIP2--9} bzip2 -c >$(distdir).tar.bz2
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)

-dist-lzip: distdir
-	tardir=$(distdir) && $(am__tar) | lzip -c $${LZIP_OPT--9} >$(distdir).tar.lz
-	$(am__post_remove_distdir)
+dist-lzma: distdir
+	tardir=$(distdir) && $(am__tar) | lzma -9 -c >$(distdir).tar.lzma
+	$(am__remove_distdir)

 dist-xz: distdir
 	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)

 dist-tarZ: distdir
 	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)

 dist-shar: distdir
 	shar $(distdir) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).shar.gz
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)

 dist-zip: distdir
 	-rm -f $(distdir).zip
 	zip -rq $(distdir).zip $(distdir)
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)

-dist dist-all:
-	$(MAKE) $(AM_MAKEFLAGS) $(DIST_TARGETS) am__post_remove_distdir='@:'
-	$(am__post_remove_distdir)
+dist dist-all: distdir
+	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
+	$(am__remove_distdir)

 # This target untars the dist file and tries a VPATH configuration.  Then
 # it guarantees that the distribution is self-contained by making another
@@ -1199,8 +1105,8 @@ distcheck: dist
 	  GZIP=$(GZIP_ENV) gzip -dc $(distdir).tar.gz | $(am__untar) ;;\
 	*.tar.bz2*) \
 	  bzip2 -dc $(distdir).tar.bz2 | $(am__untar) ;;\
-	*.tar.lz*) \
-	  lzip -dc $(distdir).tar.lz | $(am__untar) ;;\
+	*.tar.lzma*) \
+	  lzma -dc $(distdir).tar.lzma | $(am__untar) ;;\
 	*.tar.xz*) \
 	  xz -dc $(distdir).tar.xz | $(am__untar) ;;\
 	*.tar.Z*) \
@@ -1210,9 +1116,9 @@ distcheck: dist
 	*.zip*) \
 	  unzip $(distdir).zip ;;\
 	esac
-	chmod -R a-w $(distdir)
-	chmod u+w $(distdir)
-	mkdir $(distdir)/_build $(distdir)/_inst
+	chmod -R a-w $(distdir); chmod a+w $(distdir)
+	mkdir $(distdir)/_build
+	mkdir $(distdir)/_inst
 	chmod a-w $(distdir)
 	test -d $(distdir)/_build || exit 0; \
 	dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
@@ -1244,7 +1150,7 @@ distcheck: dist
 	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
 	  && cd "$$am__cwd" \
 	  || exit 1
-	$(am__post_remove_distdir)
+	$(am__remove_distdir)
 	@(echo "$(distdir) archives ready for distribution: "; \
 	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
 	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
@@ -1402,14 +1308,13 @@ uninstall-man: uninstall-man3 uninstall-man5
 	install-strip uninstall-am

 .PHONY: CTAGS GTAGS all all-am am--refresh check check-TESTS check-am \
-	clean clean-checkPROGRAMS clean-cscope clean-generic \
-	clean-libLTLIBRARIES clean-libtool cscope cscopelist ctags \
-	dist dist-all dist-bzip2 dist-gzip dist-hook dist-lzip \
-	dist-shar dist-tarZ dist-xz dist-zip distcheck distclean \
-	distclean-compile distclean-generic distclean-hdr \
-	distclean-libtool distclean-tags distcleancheck distdir \
-	distuninstallcheck dvi dvi-am html html-am info info-am \
-	install install-am install-binSCRIPTS install-data \
+	clean clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
+	clean-libtool ctags dist dist-all dist-bzip2 dist-gzip \
+	dist-hook dist-lzma dist-shar dist-tarZ dist-xz dist-zip \
+	distcheck distclean distclean-compile distclean-generic \
+	distclean-hdr distclean-libtool distclean-tags distcleancheck \
+	distdir distuninstallcheck dvi dvi-am html html-am info \
+	info-am install install-am install-binSCRIPTS install-data \
 	install-data-am install-data-hook install-dvi install-dvi-am \
 	install-exec install-exec-am install-exec-hook install-html \
 	install-html-am install-info install-info-am \
@@ -1512,24 +1417,22 @@ dist-hook:

 # install the .../include headers as links to the new ones
 install-data-hook:
-	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
-	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
-	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
+	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
 		pngconf.h
-	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
 		pnglibconf.h
-	cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
-	cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
+	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
+	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc

 # do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
 install-exec-hook:
-	cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
-	cd '$(DESTDIR)$(bindir)';\
-	   $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
+	cd $(DESTDIR)$(bindir); rm -f libpng-config
+	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
 	@set -x;\
-	cd '$(DESTDIR)$(libdir)';\
-	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
-	   sl dylib dll.a; do\
+	cd $(DESTDIR)$(libdir);\
+	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ sl dylib dll.a; do\
 		rm -f libpng.$$ext;\
                if test -f $(PNGLIB_BASENAME).$$ext; then\
                       $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
@@ -1537,16 +1440,12 @@ install-exec-hook:
 	done

 uninstall-hook:
-	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
-	rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
-	rm -f '$(DESTDIR)$(bindir)/libpng-config'
-	rm -f '$(DESTDIR)$(libdir)/libpng.a'
-	rm -f '$(DESTDIR)$(libdir)/libpng.la'
-	rm -f '$(DESTDIR)$(libdir)/libpng.so'
-	rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
-	rm -f '$(DESTDIR)$(libdir)/libpng.sl'
-	rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
-	rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
+	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
+	rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
+	rm -f $(DESTDIR)$(bindir)/libpng-config
+	rm -f $(DESTDIR)$(libdir)/libpng.a
+	rm -f $(DESTDIR)$(libdir)/libpng.la
+	rm -f $(DESTDIR)$(libdir)/libpng.dll.a

 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
--- a/2
+++ b/2
@@ -1,4 +1,4 @@
-README for libpng version 1.5.15beta01 - February 5, 2013 (shared library 15.0)
+README for libpng version 1.5.11rc05 - June 7, 2012 (shared library 15.0)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,7 +1,8 @@
-# generated automatically by aclocal 1.12.5 -*- Autoconf -*-
-
-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# generated automatically by aclocal 1.11.2 -*- Autoconf -*-

+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation,
+# Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -13,11 +14,11 @@

 m4_ifndef([AC_AUTOCONF_VERSION],
  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
-m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
-[m4_warning([this file was generated for autoconf 2.69.
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.68],,
+[m4_warning([this file was generated for autoconf 2.68.
 You have another version of autoconf.  It may work, but is not guaranteed to.
 If you have problems, you may need to regenerate the build system entirely.
-To do so, use the procedure documented by the package, typically 'autoreconf'.])])
+To do so, use the procedure documented by the package, typically `autoreconf'.])])

 # libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
 #
@@ -8606,22 +8607,25 @@ m4_ifndef([_LT_PROG_F77],		[AC_DEFUN([_LT_PROG_F77])])
 m4_ifndef([_LT_PROG_FC],		[AC_DEFUN([_LT_PROG_FC])])
 m4_ifndef([_LT_PROG_CXX],		[AC_DEFUN([_LT_PROG_CXX])])

-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, 2011 Free Software
+# Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 1
+
 # AM_AUTOMAKE_VERSION(VERSION)
 # ----------------------------
 # Automake X.Y traces this macro to ensure aclocal.m4 has been
 # generated from the m4 files accompanying Automake X.Y.
 # (This private macro should not be called outside this file.)
 AC_DEFUN([AM_AUTOMAKE_VERSION],
-[am__api_version='1.12'
+[am__api_version='1.11'
 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
 dnl require some minimum version.  Point them to the right macro.
-m4_if([$1], [1.12.5], [],
+m4_if([$1], [1.11.2], [],
      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
 ])

@@ -8637,19 +8641,21 @@ m4_define([_AM_AUTOCONF_VERSION], [])
 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.12.5])dnl
+[AM_AUTOMAKE_VERSION([1.11.2])dnl
 m4_ifndef([AC_AUTOCONF_VERSION],
  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])

 # Figure out how to run the assembler.                      -*- Autoconf -*-

-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 5
+
 # AM_PROG_AS
 # ----------
 AC_DEFUN([AM_PROG_AS],
@@ -8664,15 +8670,17 @@ _AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl

 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-

-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 1
+
 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
-# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
-# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
+# $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
+# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
 #
 # Of course, Automake must honor this variable whenever it calls a
 # tool from the auxiliary directory.  The problem is that $srcdir (and
@@ -8691,7 +8699,7 @@ _AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
 #
 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
 # are both prefixed by $srcdir.  In an in-source build this is usually
-# harmless because $srcdir is '.', but things will broke when you
+# harmless because $srcdir is `.', but things will broke when you
 # start a VPATH build or use an absolute $srcdir.
 #
 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
@@ -8717,19 +8725,22 @@ am_aux_dir=`cd $ac_aux_dir && pwd`

 # AM_CONDITIONAL                                            -*- Autoconf -*-

-# Copyright (C) 1997-2012 Free Software Foundation, Inc.
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 9
+
 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
 # -------------------------------------
 # Define a conditional.
 AC_DEFUN([AM_CONDITIONAL],
-[AC_PREREQ([2.52])dnl
- m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
-       [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
+	[$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
 AC_SUBST([$1_TRUE])dnl
 AC_SUBST([$1_FALSE])dnl
 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
@@ -8748,14 +8759,16 @@ AC_CONFIG_COMMANDS_PRE(
 Usually this means the macro was only invoked conditionally.]])
 fi])])

-# Copyright (C) 1999-2012 Free Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009,
+# 2010, 2011 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 12

-# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
+# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
 # written in clear, in which case automake, when reading aclocal.m4,
 # will think it sees a *use*, and therefore will trigger all it's
 # C support machinery.  Also note that it means that autoscan, seeing
@@ -8765,7 +8778,7 @@ fi])])
 # _AM_DEPENDENCIES(NAME)
 # ----------------------
 # See how the compiler implements dependency checking.
-# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
+# NAME is "CC", "CXX", "GCJ", or "OBJC".
 # We try a few techniques and use that to set a single cache variable.
 #
 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
@@ -8778,13 +8791,12 @@ AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
 AC_REQUIRE([AM_DEP_TRACK])dnl

-m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
-      [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
-      [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
-      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
-      [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
-      [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
-                    [depcc="$$1"   am_compiler_list=])
+ifelse([$1], CC,   [depcc="$CC"   am_compiler_list=],
+       [$1], CXX,  [depcc="$CXX"  am_compiler_list=],
+       [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+       [$1], UPC,  [depcc="$UPC"  am_compiler_list=],
+       [$1], GCJ,  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
+                   [depcc="$$1"   am_compiler_list=])

 AC_CACHE_CHECK([dependency style of $depcc],
               [am_cv_$1_dependencies_compiler_type],
@@ -8792,8 +8804,8 @@ AC_CACHE_CHECK([dependency style of $depcc],
  # We make a subdir and do the tests there.  Otherwise we can end up
  # making bogus files that we don't know about and never remove.  For
  # instance it was reported that on HP-UX the gcc test will end up
-  # making a dummy file named 'D' -- because '-MD' means "put the output
-  # in D".
+  # making a dummy file named `D' -- because `-MD' means `put the output
+  # in D'.
  rm -rf conftest.dir
  mkdir conftest.dir
  # Copy depcomp to subdir because otherwise we won't find it if we're
@@ -8833,16 +8845,16 @@ AC_CACHE_CHECK([dependency style of $depcc],
    : > sub/conftest.c
    for i in 1 2 3 4 5 6; do
      echo '#include "conftst'$i'.h"' >> sub/conftest.c
-      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
-      # Solaris 10 /bin/sh.
-      echo '/* dummy */' > sub/conftst$i.h
+      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+      # Solaris 8's {/usr,}/bin/sh.
+      touch sub/conftst$i.h
    done
    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf

-    # We check with '-c' and '-o' for the sake of the "dashmstdout"
+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
    # mode.  It turns out that the SunPro C++ compiler does not properly
-    # handle '-M -o', and we need to detect this.  Also, some Intel
-    # versions had trouble with output in subdirs.
+    # handle `-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs
    am__obj=sub/conftest.${OBJEXT-o}
    am__minus_obj="-o $am__obj"
    case $depmode in
@@ -8851,8 +8863,8 @@ AC_CACHE_CHECK([dependency style of $depcc],
      test "$am__universal" = false || continue
      ;;
    nosideeffect)
-      # After this tag, mechanisms are not by side-effect, so they'll
-      # only be used when explicitly requested.
+      # after this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested
      if test "x$enable_dependency_tracking" = xyes; then
 	continue
      else
@@ -8860,7 +8872,7 @@ AC_CACHE_CHECK([dependency style of $depcc],
      fi
      ;;
    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
-      # This compiler won't grok '-c -o', but also, the minuso test has
+      # This compiler won't grok `-c -o', but also, the minuso test has
      # not run yet.  These depmodes are late enough in the game, and
      # so weak that their functioning should not be impacted.
      am__obj=conftest.${OBJEXT-o}
@@ -8908,7 +8920,7 @@ AM_CONDITIONAL([am__fastdep$1], [
 # AM_SET_DEPDIR
 # -------------
 # Choose a directory name for dependency files.
-# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
+# This macro is AC_REQUIREd in _AM_DEPENDENCIES
 AC_DEFUN([AM_SET_DEPDIR],
 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
@@ -8918,13 +8930,9 @@ AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
 # AM_DEP_TRACK
 # ------------
 AC_DEFUN([AM_DEP_TRACK],
-[AC_ARG_ENABLE([dependency-tracking], [dnl
-AS_HELP_STRING(
-  [--enable-dependency-tracking],
-  [do not reject slow dependency extractors])
-AS_HELP_STRING(
-  [--disable-dependency-tracking],
-  [speeds up one-time build])])
+[AC_ARG_ENABLE(dependency-tracking,
+[  --disable-dependency-tracking  speeds up one-time build
+  --enable-dependency-tracking   do not reject slow dependency extractors])
 if test "x$enable_dependency_tracking" != xno; then
  am_depcomp="$ac_aux_dir/depcomp"
  AMDEPBACKSLASH='\'
@@ -8939,12 +8947,14 @@ _AM_SUBST_NOTMAKE([am__nodep])dnl

 # Generate code to set up dependency tracking.              -*- Autoconf -*-

-# Copyright (C) 1999-2012 Free Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+#serial 5

 # _AM_OUTPUT_DEPENDENCY_COMMANDS
 # ------------------------------
@@ -8963,7 +8973,7 @@ AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
    # Strip MF so we end up with the name of the file.
    mf=`echo "$mf" | sed -e 's/:.*$//'`
    # Check whether this is an Automake generated Makefile or not.
-    # We used to match only the files named 'Makefile.in', but
+    # We used to match only the files named `Makefile.in', but
    # some people rename them; so instead we look at the file content.
    # Grep'ing the first line is not enough: some people post-process
    # each Makefile.in and add a new line on top of each file to say so.
@@ -8975,19 +8985,21 @@ AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
      continue
    fi
    # Extract the definition of DEPDIR, am__include, and am__quote
-    # from the Makefile without running 'make'.
+    # from the Makefile without running `make'.
    DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
    test -z "$DEPDIR" && continue
    am__include=`sed -n 's/^am__include = //p' < "$mf"`
    test -z "am__include" && continue
    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+    # When using ansi2knr, U may be empty or an underscore; expand it
+    U=`sed -n 's/^U = //p' < "$mf"`
    # Find all dependency output files, they are included files with
    # $(DEPDIR) in their names.  We invoke sed twice because it is the
    # simplest approach to changing $(DEPDIR) to its actual value in the
    # expansion.
    for file in `sed -n "
      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
-	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
+	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
      # Make sure the directory exists.
      test -f "$dirpart/$file" && continue
      fdir=`AS_DIRNAME(["$file"])`
@@ -9005,7 +9017,7 @@ AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
 # This macro should only be invoked once -- use via AC_REQUIRE.
 #
 # This code is only required when automatic dependency tracking
-# is enabled.  FIXME.  This creates each '.P' file that we will
+# is enabled.  FIXME.  This creates each `.P' file that we will
 # need in order to bootstrap the dependency handling code.
 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
 [AC_CONFIG_COMMANDS([depfiles],
@@ -9013,23 +9025,29 @@ AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
 ])

-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
+# Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 8
+
 # AM_CONFIG_HEADER is obsolete.  It has been replaced by AC_CONFIG_HEADERS.
 AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_HEADERS($@)])

 # Do all the work for Automake.                             -*- Autoconf -*-

-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 16
+
 # This macro actually does too much.  Some checks are only needed if
 # your package does certain things.  But this isn't really a big deal.

@@ -9074,41 +9092,31 @@ AC_SUBST([CYGPATH_W])
 # Define the identity of the package.
 dnl Distinguish between old-style and new-style calls.
 m4_ifval([$2],
-[AC_DIAGNOSE([obsolete],
-[$0: two- and three-arguments forms are deprecated.  For more info, see:
-http://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_INIT_AUTOMAKE-invocation])
-m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
+[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
 AC_SUBST([PACKAGE], [$1])dnl
 AC_SUBST([VERSION], [$2])],
 [_AM_SET_OPTIONS([$1])dnl
 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
-m4_if(
-  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
-  [ok:ok],,
+m4_if(m4_ifdef([AC_PACKAGE_NAME], 1)m4_ifdef([AC_PACKAGE_VERSION], 1), 11,,
  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
 AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
 AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl

 _AM_IF_OPTION([no-define],,
-[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
- AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
+[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
+ AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl

 # Some tools Automake needs.
 AC_REQUIRE([AM_SANITY_CHECK])dnl
 AC_REQUIRE([AC_ARG_PROGRAM])dnl
-AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
-AM_MISSING_PROG([AUTOCONF], [autoconf])
-AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
-AM_MISSING_PROG([AUTOHEADER], [autoheader])
-AM_MISSING_PROG([MAKEINFO], [makeinfo])
+AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
+AM_MISSING_PROG(AUTOCONF, autoconf)
+AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
+AM_MISSING_PROG(AUTOHEADER, autoheader)
+AM_MISSING_PROG(MAKEINFO, makeinfo)
 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
-AC_REQUIRE([AC_PROG_MKDIR_P])dnl
-# For better backward compatibility.  To be removed once Automake 1.9.x
-# dies out for good.  For more background, see:
-# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
-# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
-AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
+AC_REQUIRE([AM_PROG_MKDIR_P])dnl
 # We need awk for the "check" target.  The system "awk" is bad on
 # some platforms.
 AC_REQUIRE([AC_PROG_AWK])dnl
@@ -9119,35 +9127,28 @@ _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
 			     [_AM_PROG_TAR([v7])])])
 _AM_IF_OPTION([no-dependencies],,
 [AC_PROVIDE_IFELSE([AC_PROG_CC],
-		  [_AM_DEPENDENCIES([CC])],
-		  [m4_define([AC_PROG_CC],
-			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
+		  [_AM_DEPENDENCIES(CC)],
+		  [define([AC_PROG_CC],
+			  defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
 AC_PROVIDE_IFELSE([AC_PROG_CXX],
-		  [_AM_DEPENDENCIES([CXX])],
-		  [m4_define([AC_PROG_CXX],
-			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
+		  [_AM_DEPENDENCIES(CXX)],
+		  [define([AC_PROG_CXX],
+			  defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
-		  [_AM_DEPENDENCIES([OBJC])],
-		  [m4_define([AC_PROG_OBJC],
-			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
-dnl Support for Objective C++ was only introduced in Autoconf 2.65,
-dnl but we still cater to Autoconf 2.62.
-m4_ifdef([AC_PROG_OBJCXX],
-[AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
-		  [_AM_DEPENDENCIES([OBJCXX])],
-		  [m4_define([AC_PROG_OBJCXX],
-			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])])dnl
+		  [_AM_DEPENDENCIES(OBJC)],
+		  [define([AC_PROG_OBJC],
+			  defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
 ])
 _AM_IF_OPTION([silent-rules], [AC_REQUIRE([AM_SILENT_RULES])])dnl
-dnl The 'parallel-tests' driver may need to know about EXEEXT, so add the
-dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This macro
+dnl The `parallel-tests' driver may need to know about EXEEXT, so add the
+dnl `am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This macro
 dnl is hooked onto _AC_COMPILER_EXEEXT early, see below.
 AC_CONFIG_COMMANDS_PRE(dnl
 [m4_provide_if([_AM_COMPILER_EXEEXT],
  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
 ])

-dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
+dnl Hook into `_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
 dnl mangled by Autoconf and run in a shell conditional statement.
 m4_define([_AC_COMPILER_EXEEXT],
@@ -9175,12 +9176,15 @@ for _am_header in $config_headers :; do
 done
 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])

-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005, 2008, 2011 Free Software Foundation,
+# Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 1
+
 # AM_PROG_INSTALL_SH
 # ------------------
 # Define $install_sh.
@@ -9194,14 +9198,16 @@ if test x"${install_sh}" != xset; then
    install_sh="\${SHELL} $am_aux_dir/install-sh"
  esac
 fi
-AC_SUBST([install_sh])])
+AC_SUBST(install_sh)])

-# Copyright (C) 2003-2012 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2005  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 2
+
 # Check whether the underlying file-system supports filenames
 # with a leading dot.  For instance MS-DOS doesn't.
 AC_DEFUN([AM_SET_LEADING_DOT],
@@ -9218,17 +9224,20 @@ AC_SUBST([am__leading_dot])])
 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 # From Jim Meyering

-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008,
+# 2011 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 5
+
 # AM_MAINTAINER_MODE([DEFAULT-MODE])
 # ----------------------------------
 # Control maintainer-specific portions of Makefiles.
-# Default is to disable them, unless 'enable' is passed literally.
-# For symmetry, 'disable' may be passed as well.  Anyway, the user
+# Default is to disable them, unless `enable' is passed literally.
+# For symmetry, `disable' may be passed as well.  Anyway, the user
 # can override the default with the --enable/--disable switch.
 AC_DEFUN([AM_MAINTAINER_MODE],
 [m4_case(m4_default([$1], [disable]),
@@ -9239,11 +9248,10 @@ AC_DEFUN([AM_MAINTAINER_MODE],
 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
  AC_ARG_ENABLE([maintainer-mode],
-    [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
-      am_maintainer_other[ make rules and dependencies not useful
-      (and sometimes confusing) to the casual installer])],
-    [USE_MAINTAINER_MODE=$enableval],
-    [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
+[  --][am_maintainer_other][-maintainer-mode  am_maintainer_other make rules and dependencies not useful
+			  (and sometimes confusing) to the casual installer],
+      [USE_MAINTAINER_MODE=$enableval],
+      [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
  MAINT=$MAINTAINER_MODE_TRUE
@@ -9255,12 +9263,14 @@ AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])

 # Check to see how 'make' treats includes.	            -*- Autoconf -*-

-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003, 2005, 2009  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 4
+
 # AM_MAKE_INCLUDE()
 # -----------------
 # Check to see how make treats includes.
@@ -9278,7 +9288,7 @@ am__quote=
 _am_result=none
 # First try GNU make style include.
 echo "include confinc" > confmf
-# Ignore all kinds of additional output from 'make'.
+# Ignore all kinds of additional output from `make'.
 case `$am_make -s -f confmf 2> /dev/null` in #(
 *the\ am__doit\ target*)
  am__include=include
@@ -9305,12 +9315,15 @@ rm -f confinc confmf

 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-

-# Copyright (C) 1997-2012 Free Software Foundation, Inc.
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 6
+
 # AM_MISSING_PROG(NAME, PROGRAM)
 # ------------------------------
 AC_DEFUN([AM_MISSING_PROG],
@@ -9318,6 +9331,7 @@ AC_DEFUN([AM_MISSING_PROG],
 $1=${$1-"${am_missing_run}$2"}
 AC_SUBST($1)])

+
 # AM_MISSING_HAS_RUN
 # ------------------
 # Define MISSING if not defined so far and test if it supports --run.
@@ -9338,18 +9352,50 @@ if eval "$MISSING --run true"; then
  am_missing_run="$MISSING --run "
 else
  am_missing_run=
-  AC_MSG_WARN(['missing' script is too old or missing])
+  AC_MSG_WARN([`missing' script is too old or missing])
 fi
 ])

-# Helper functions for option handling.                     -*- Autoconf -*-
-
-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2004, 2005, 2006, 2011 Free Software Foundation,
+# Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 1
+
+# AM_PROG_MKDIR_P
+# ---------------
+# Check for `mkdir -p'.
+AC_DEFUN([AM_PROG_MKDIR_P],
+[AC_PREREQ([2.60])dnl
+AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+dnl Automake 1.8 to 1.9.6 used to define mkdir_p.  We now use MKDIR_P,
+dnl while keeping a definition of mkdir_p for backward compatibility.
+dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
+dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
+dnl Makefile.ins that do not define MKDIR_P, so we do our own
+dnl adjustment using top_builddir (which is defined more often than
+dnl MKDIR_P).
+AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
+case $mkdir_p in
+  [[\\/$]]* | ?:[[\\/]]*) ;;
+  */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2008, 2010 Free Software
+# Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
 # _AM_MANGLE_OPTION(NAME)
 # -----------------------
 AC_DEFUN([_AM_MANGLE_OPTION],
@@ -9359,7 +9405,7 @@ AC_DEFUN([_AM_MANGLE_OPTION],
 # --------------------
 # Set option NAME.  Presently that only means defining a flag for this option.
 AC_DEFUN([_AM_SET_OPTION],
-[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
+[m4_define(_AM_MANGLE_OPTION([$1]), 1)])

 # _AM_SET_OPTIONS(OPTIONS)
 # ------------------------
@@ -9375,16 +9421,22 @@ AC_DEFUN([_AM_IF_OPTION],

 # Check to make sure that the build environment is sane.    -*- Autoconf -*-

-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
+# Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 5
+
 # AM_SANITY_CHECK
 # ---------------
 AC_DEFUN([AM_SANITY_CHECK],
 [AC_MSG_CHECKING([whether build environment is sane])
+# Just in case
+sleep 1
+echo timestamp > conftest.file
 # Reject unsafe characters in $srcdir or the absolute working directory
 # name.  Accept space and tab only in the latter.
 am_lf='
@@ -9395,40 +9447,32 @@ case `pwd` in
 esac
 case $srcdir in
  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
-    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
+    AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
 esac

-# Do 'set' in a subshell so we don't clobber the current shell's
+# Do `set' in a subshell so we don't clobber the current shell's
 # arguments.  Must try -L first in case configure is actually a
 # symlink; some systems play weird games with the mod time of symlinks
 # (eg FreeBSD returns the mod time of the symlink's containing
 # directory).
 if (
-   am_has_slept=no
-   for am_try in 1 2; do
-     echo "timestamp, slept: $am_has_slept" > conftest.file
-     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
-     if test "$[*]" = "X"; then
-	# -L didn't work.
-	set X `ls -t "$srcdir/configure" conftest.file`
-     fi
-     if test "$[*]" != "X $srcdir/configure conftest.file" \
-	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
+   set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+   if test "$[*]" = "X"; then
+      # -L didn't work.
+      set X `ls -t "$srcdir/configure" conftest.file`
+   fi
+   rm -f conftest.file
+   if test "$[*]" != "X $srcdir/configure conftest.file" \
+      && test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+      # If neither matched, then we have a broken ls.  This can happen
+      # if, for instance, CONFIG_SHELL is bash and it inherits a
+      # broken ls alias from the environment.  This has actually
+      # happened.  Such a system could not be considered "sane".
+      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+alias in your environment])
+   fi

-	# If neither matched, then we have a broken ls.  This can happen
-	# if, for instance, CONFIG_SHELL is bash and it inherits a
-	# broken ls alias from the environment.  This has actually
-	# happened.  Such a system could not be considered "sane".
-	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
-  alias in your environment])
-     fi
-     if test "$[2]" = conftest.file || test $am_try -eq 2; then
-       break
-     fi
-     # Just in case.
-     sleep 1
-     am_has_slept=yes
-   done
   test "$[2]" = conftest.file
   )
 then
@@ -9438,58 +9482,46 @@ else
   AC_MSG_ERROR([newly created file is older than distributed files!
 Check your system clock])
 fi
-AC_MSG_RESULT([yes])
-# If we didn't sleep, we still need to ensure time stamps of config.status and
-# generated files are strictly newer.
-am_sleep_pid=
-if grep 'slept: no' conftest.file >/dev/null 2>&1; then
-  ( sleep 1 ) &
-  am_sleep_pid=$!
-fi
-AC_CONFIG_COMMANDS_PRE(
-  [AC_MSG_CHECKING([that generated files are newer than configure])
-   if test -n "$am_sleep_pid"; then
-     # Hide warnings about reused PIDs.
-     wait $am_sleep_pid 2>/dev/null
-   fi
-   AC_MSG_RESULT([done])])
-rm -f conftest.file
-])
+AC_MSG_RESULT(yes)])

-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 1
+
 # AM_PROG_INSTALL_STRIP
 # ---------------------
-# One issue with vendor 'install' (even GNU) is that you can't
+# One issue with vendor `install' (even GNU) is that you can't
 # specify the program used to strip binaries.  This is especially
 # annoying in cross-compiling environments, where the build's strip
 # is unlikely to handle the host's binaries.
 # Fortunately install-sh will honor a STRIPPROG variable, so we
-# always use install-sh in "make install-strip", and initialize
+# always use install-sh in `make install-strip', and initialize
 # STRIPPROG with the value of the STRIP variable (set by the user).
 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
-# Installed binaries are usually stripped using 'strip' when the user
-# run "make install-strip".  However 'strip' might not be the right
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'.  However `strip' might not be the right
 # tool to use in cross-compilation environments, therefore Automake
-# will honor the 'STRIP' environment variable to overrule this program.
-dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
+# will honor the `STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
 if test "$cross_compiling" != no; then
  AC_CHECK_TOOL([STRIP], [strip], :)
 fi
 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 AC_SUBST([INSTALL_STRIP_PROGRAM])])

-# Copyright (C) 2006-2012 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2008, 2010 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 3
+
 # _AM_SUBST_NOTMAKE(VARIABLE)
 # ---------------------------
 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
@@ -9503,16 +9535,18 @@ AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])

 # Check how to create a tarball.                            -*- Autoconf -*-

-# Copyright (C) 2004-2012 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2005  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 2
+
 # _AM_PROG_TAR(FORMAT)
 # --------------------
 # Check how to create a tarball in format FORMAT.
-# FORMAT should be one of 'v7', 'ustar', or 'pax'.
+# FORMAT should be one of `v7', `ustar', or `pax'.
 #
 # Substitute a variable $(am__tar) that is a command
 # writing to stdout a FORMAT-tarball containing the directory
@@ -9523,11 +9557,10 @@ AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 # a tarball read from stdin.
 #     $(am__untar) < result.tar
 AC_DEFUN([_AM_PROG_TAR],
-[# Always define AMTAR for backward compatibility.  Yes, it's still used
-# in the wild :-(  We should find a proper way to deprecate it ...
-AC_SUBST([AMTAR], ['$${TAR-tar}'])
+[# Always define AMTAR for backward compatibility.
+AM_MISSING_PROG([AMTAR], [tar])
 m4_if([$1], [v7],
-     [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
+     [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
     [m4_case([$1], [ustar],, [pax],,
              [m4_fatal([Unknown tar format])])
 AC_MSG_CHECKING([how to create a $1 tar archive])
@@ -9535,7 +9568,7 @@ AC_MSG_CHECKING([how to create a $1 tar archive])
 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 # Do not fold the above two line into one, because Tru64 sh and
-# Solaris sh will not grok spaces in the rhs of '-'.
+# Solaris sh will not grok spaces in the rhs of `-'.
 for _am_tool in $_am_tools
 do
  case $_am_tool in
--- a/arm/arm_init.c
+++ b/arm/arm_init.c
@@ -1,86 +0,0 @@
-
-/* arm_init.c - NEON optimised filter functions
- *
- * Copyright (c) 2013 Glenn Randers-Pehrson
- * Written by Mans Rullgard, 2011.
- * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-#include "../pngpriv.h"
-
-/* __arm__ is defined by GCC, MSVC defines _M_ARM to the ARM version number */
-#if defined __linux__ && defined __arm__
-#include <stdio.h>
-#include <elf.h>
-#include <asm/hwcap.h>
-
-static int png_have_hwcap(unsigned cap)
-{
-   FILE *f = fopen("/proc/self/auxv", "r");
-   Elf32_auxv_t aux;
-   int have_cap = 0;
-
-   if (!f)
-      return 0;
-
-   while (fread(&aux, sizeof(aux), 1, f) > 0)
-   {
-      if (aux.a_type == AT_HWCAP &&
-          aux.a_un.a_val & cap)
-      {
-         have_cap = 1;
-         break;
-      }
-   }
-
-   fclose(f);
-
-   return have_cap;
-}
-#endif /* __linux__ && __arm__ */
-
-void
-png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
-{
-#ifdef __arm__
-#ifdef __linux__
-   if (!png_have_hwcap(HWCAP_NEON))
-      return;
-#endif
-
-   /* IMPORTANT: any new external functions used here must be declared using
-    * PNG_INTERNAL_FUNCTION in ../pngpriv.h.  This is required so that the
-    * 'prefix' option to configure works:
-    *
-    *    ./configure --with-libpng-prefix=foobar_
-    *
-    * Verify you have got this right by running the above command, doing a build
-    * and examining pngprefix.h; it must contain a #define for every external
-    * function you add.  (Notice that this happens automatically for the
-    * initialization function.)
-    */
-   pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_neon;
-
-   if (bpp == 3)
-   {
-      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_neon;
-      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_neon;
-      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
-         png_read_filter_row_paeth3_neon;
-   }
-
-   else if (bpp == 4)
-   {
-      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_neon;
-      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_neon;
-      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
-          png_read_filter_row_paeth4_neon;
-   }
-#else
-   PNG_UNUSED(pp)
-   PNG_UNUSED(bpp)
-#endif
-}
--- a/arm/filter_neon.S
+++ b/arm/filter_neon.S
@@ -3,18 +3,12 @@
 *
 * Copyright (c) 2011 Glenn Randers-Pehrson
 * Written by Mans Rullgard, 2011.
- * Last changed in libpng 1.5.7 [December 15, 2011]
 *
 * This code is released under the libpng license.
 * For conditions of distribution and use, see the disclaimer
 * and license in png.h
 */

-/* This is required to get the symbol renames, which are #defines */
-#define PNG_VERSION_INFO_ONLY
-#include "../pngpriv.h"
-
-#ifdef __arm__
 #if defined(__linux__) && defined(__ELF__)
 .section .note.GNU-stack,"",%progbits /* mark stack as non-executable */
 #endif
@@ -229,4 +223,3 @@ func    png_read_filter_row_paeth3_neon, export=1

        pop             {r4,pc}
 endfunc
-#endif
--- a/config.guess
+++ b/config.guess
@@ -2,9 +2,9 @@
 # Attempt to guess a canonical system name.
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-#   2011, 2012 Free Software Foundation, Inc.
+#   2011 Free Software Foundation, Inc.

-timestamp='2012-09-25'
+timestamp='2011-11-11'

 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -17,7 +17,9 @@ timestamp='2012-09-25'
 # General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
 #
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -55,8 +57,8 @@ GNU config.guess ($timestamp)

 Originally written by Per Bothner.
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
-Free Software Foundation, Inc.
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free
+Software Foundation, Inc.

 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -143,7 +145,7 @@ UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
 case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
    *:NetBSD:*:*)
 	# NetBSD (nbsd) targets should (where applicable) match one or
-	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
 	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
 	# switched to ELF, *-*-netbsd* would select the old
 	# object file format.  This provides both forward
@@ -200,10 +202,6 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
 	echo "${machine}-${os}${release}"
 	exit ;;
-    *:Bitrig:*:*)
-	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
-	echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
-	exit ;;
    *:OpenBSD:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
 	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
@@ -306,7 +304,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
 	echo arm-acorn-riscix${UNAME_RELEASE}
 	exit ;;
-    arm*:riscos:*:*|arm*:RISCOS:*:*)
+    arm:riscos:*:*|arm:RISCOS:*:*)
 	echo arm-unknown-riscos
 	exit ;;
    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
@@ -805,9 +803,6 @@ EOF
    i*:CYGWIN*:*)
 	echo ${UNAME_MACHINE}-pc-cygwin
 	exit ;;
-    *:MINGW64*:*)
-	echo ${UNAME_MACHINE}-pc-mingw64
-	exit ;;
    *:MINGW*:*)
 	echo ${UNAME_MACHINE}-pc-mingw32
 	exit ;;
@@ -868,13 +863,6 @@ EOF
    i*86:Minix:*:*)
 	echo ${UNAME_MACHINE}-pc-minix
 	exit ;;
-    aarch64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    aarch64_be:Linux:*:*)
-	UNAME_MACHINE=aarch64_be
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
    alpha:Linux:*:*)
 	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
 	  EV5)   UNAME_MACHINE=alphaev5 ;;
@@ -909,16 +897,16 @@ EOF
 	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
    cris:Linux:*:*)
-	echo ${UNAME_MACHINE}-axis-linux-gnu
+	echo cris-axis-linux-gnu
 	exit ;;
    crisv32:Linux:*:*)
-	echo ${UNAME_MACHINE}-axis-linux-gnu
+	echo crisv32-axis-linux-gnu
 	exit ;;
    frv:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo frv-unknown-linux-gnu
 	exit ;;
    hexagon:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo hexagon-unknown-linux-gnu
 	exit ;;
    i*86:Linux:*:*)
 	LIBC=gnu
@@ -960,7 +948,7 @@ EOF
 	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
 	;;
    or32:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo or32-unknown-linux-gnu
 	exit ;;
    padre:Linux:*:*)
 	echo sparc-unknown-linux-gnu
@@ -1001,7 +989,7 @@ EOF
 	echo ${UNAME_MACHINE}-dec-linux-gnu
 	exit ;;
    x86_64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo x86_64-unknown-linux-gnu
 	exit ;;
    xtensa*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-gnu
@@ -1208,9 +1196,6 @@ EOF
    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
 	echo i586-pc-haiku
 	exit ;;
-    x86_64:Haiku:*:*)
-	echo x86_64-unknown-haiku
-	exit ;;
    SX-4:SUPER-UX:*:*)
 	echo sx4-nec-superux${UNAME_RELEASE}
 	exit ;;
@@ -1266,7 +1251,7 @@ EOF
    NEO-?:NONSTOP_KERNEL:*:*)
 	echo neo-tandem-nsk${UNAME_RELEASE}
 	exit ;;
-    NSE-*:NONSTOP_KERNEL:*:*)
+    NSE-?:NONSTOP_KERNEL:*:*)
 	echo nse-tandem-nsk${UNAME_RELEASE}
 	exit ;;
    NSR-?:NONSTOP_KERNEL:*:*)
@@ -1335,11 +1320,11 @@ EOF
    i*86:AROS:*:*)
 	echo ${UNAME_MACHINE}-pc-aros
 	exit ;;
-    x86_64:VMkernel:*:*)
-	echo ${UNAME_MACHINE}-unknown-esx
-	exit ;;
 esac

+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
 eval $set_cc_for_build
 cat >$dummy.c <<EOF
 #ifdef _SEQUENT_
--- a/config.h.in
+++ b/config.h.in
@@ -76,8 +76,8 @@
 /* Align row buffers */
 #undef PNG_ALIGNED_MEMORY_SUPPORTED

-/* ARM NEON filter initialization function */
-#undef PNG_FILTER_OPTIMIZATIONS
+/* Enable ARM NEON optimizations */
+#undef PNG_ARM_NEON

 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
--- a/config.sub
+++ b/config.sub
@@ -2,9 +2,9 @@
 # Configuration validation subroutine script.
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-#   2011, 2012 Free Software Foundation, Inc.
+#   2011 Free Software Foundation, Inc.

-timestamp='2012-10-10'
+timestamp='2011-11-11'

 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -21,7 +21,9 @@ timestamp='2012-10-10'
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
 #
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -74,8 +76,8 @@ version="\
 GNU config.sub ($timestamp)

 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
-Free Software Foundation, Inc.
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free
+Software Foundation, Inc.

 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -123,17 +125,13 @@ esac
 maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
  nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
-  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+  linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
  knetbsd*-gnu* | netbsd*-gnu* | \
  kopensolaris*-gnu* | \
  storm-chaos* | os2-emx* | rtmk-nova*)
    os=-$maybe_os
    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
    ;;
-  android-linux)
-    os=-linux-android
-    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
-    ;;
  *)
    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
    if [ $basic_machine != $1 ]
@@ -156,7 +154,7 @@ case $os in
 	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
 	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
 	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple | -axis | -knuth | -cray | -microblaze*)
+	-apple | -axis | -knuth | -cray | -microblaze)
 		os=
 		basic_machine=$1
 		;;
@@ -225,12 +223,6 @@ case $os in
 	-isc*)
 		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
 		;;
-	-lynx*178)
-		os=-lynxos178
-		;;
-	-lynx*5)
-		os=-lynxos5
-		;;
 	-lynx*)
 		os=-lynxos
 		;;
@@ -255,14 +247,11 @@ case $basic_machine in
 	# Some are omitted here because they have special meanings below.
 	1750a | 580 \
 	| a29k \
-	| aarch64 | aarch64_be \
 	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
-	| arc \
-	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
-	| avr | avr32 \
-	| be32 | be64 \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+        | be32 | be64 \
 	| bfin \
 	| c4x | clipper \
 	| d10v | d30v | dlx | dsp16xx \
@@ -275,7 +264,7 @@ case $basic_machine in
 	| le32 | le64 \
 	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
-	| maxq | mb | microblaze | microblazeel | mcore | mep | metag \
+	| maxq | mb | microblaze | mcore | mep | metag \
 	| mips | mipsbe | mipseb | mipsel | mipsle \
 	| mips16 \
 	| mips64 | mips64el \
@@ -330,7 +319,8 @@ case $basic_machine in
 	c6x)
 		basic_machine=tic6x-unknown
 		;;
-	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | picochip)
+	m6811 | m68hc11 | m6812 | m68hc12 | picochip)
+		# Motorola 68HC11/12.
 		basic_machine=$basic_machine-unknown
 		os=-none
 		;;
@@ -343,10 +333,7 @@ case $basic_machine in
 	strongarm | thumb | xscale)
 		basic_machine=arm-unknown
 		;;
-	xgate)
-		basic_machine=$basic_machine-unknown
-		os=-none
-		;;
+
 	xscaleeb)
 		basic_machine=armeb-unknown
 		;;
@@ -369,7 +356,6 @@ case $basic_machine in
 	# Recognize the basic CPU types with company name.
 	580-* \
 	| a29k-* \
-	| aarch64-* | aarch64_be-* \
 	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
 	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
 	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
@@ -391,8 +377,7 @@ case $basic_machine in
 	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
-	| microblaze-* | microblazeel-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \
 	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
 	| mips16-* \
 	| mips64-* | mips64el-* \
@@ -734,6 +719,7 @@ case $basic_machine in
 	i370-ibm* | ibm*)
 		basic_machine=i370-ibm
 		;;
+# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
 	i*86v32)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-sysv32
@@ -791,13 +777,9 @@ case $basic_machine in
 		basic_machine=ns32k-utek
 		os=-sysv
 		;;
-	microblaze*)
+	microblaze)
 		basic_machine=microblaze-xilinx
 		;;
-	mingw64)
-		basic_machine=x86_64-pc
-		os=-mingw64
-		;;
 	mingw32)
 		basic_machine=i386-pc
 		os=-mingw32
@@ -1359,15 +1341,15 @@ case $os in
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -bitrig* | -openbsd* | -solidbsd* \
+	      | -openbsd* | -solidbsd* \
 	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
 	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
 	      | -chorusos* | -chorusrdb* | -cegcc* \
 	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
-	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
+	      | -mingw32* | -linux-gnu* | -linux-android* \
+	      | -linux-newlib* | -linux-uclibc* \
 	      | -uxpv* | -beos* | -mpeix* | -udk* \
 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
@@ -1550,9 +1532,6 @@ case $basic_machine in
 	c4x-* | tic4x-*)
 		os=-coff
 		;;
-	hexagon-*)
-		os=-elf
-		;;
 	tic54x-*)
 		os=-coff
 		;;
@@ -1580,6 +1559,9 @@ case $basic_machine in
 		;;
 	m68000-sun)
 		os=-sunos3
+		# This also exists in the configure program, but was not the
+		# default.
+		# os=-sunos4
 		;;
 	m68*-cisco)
 		os=-aout
--- a/338
+++ b/338
@@ -1,11 +1,13 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for libpng 1.5.15beta01.
+# Generated by GNU Autoconf 2.68 for libpng 1.5.11rc05.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
 #
-# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+# Foundation, Inc.
 #
 #
 # This configure script is free software; the Free Software Foundation
@@ -134,31 +136,6 @@ export LANGUAGE
 # CDPATH.
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH

-# Use a proper internal environment variable to ensure we don't fall
-  # into an infinite loop, continuously re-executing ourselves.
-  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
-    _as_can_reexec=no; export _as_can_reexec;
-    # We cannot yet assume a decent shell, so we have to provide a
-# neutralization value for shells without unset; and this also
-# works around shells that cannot unset nonexistent variables.
-# Preserve -v and -x to the replacement shell.
-BASH_ENV=/dev/null
-ENV=/dev/null
-(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-case $- in # ((((
-  *v*x* | *x*v* ) as_opts=-vx ;;
-  *v* ) as_opts=-v ;;
-  *x* ) as_opts=-x ;;
-  * ) as_opts= ;;
-esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
-# Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-as_fn_exit 255
-  fi
-  # We don't want this to propagate to other subprocesses.
-          { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
  emulate sh
@@ -192,8 +169,7 @@ if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
 else
  exitcode=1; echo positional parameters were not saved.
 fi
-test x\$exitcode = x0 || exit 1
-test -x / || exit 1"
+test x\$exitcode = x0 || exit 1"
  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
@@ -246,25 +222,21 @@ IFS=$as_save_IFS


      if test "x$CONFIG_SHELL" != x; then :
-  export CONFIG_SHELL
-             # We cannot yet assume a decent shell, so we have to provide a
-# neutralization value for shells without unset; and this also
-# works around shells that cannot unset nonexistent variables.
-# Preserve -v and -x to the replacement shell.
-BASH_ENV=/dev/null
-ENV=/dev/null
-(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-case $- in # ((((
-  *v*x* | *x*v* ) as_opts=-vx ;;
-  *v* ) as_opts=-v ;;
-  *x* ) as_opts=-x ;;
-  * ) as_opts= ;;
-esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
-# Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-exit 255
+  # We cannot yet assume a decent shell, so we have to provide a
+	# neutralization value for shells without unset; and this also
+	# works around shells that cannot unset nonexistent variables.
+	# Preserve -v and -x to the replacement shell.
+	BASH_ENV=/dev/null
+	ENV=/dev/null
+	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+	export CONFIG_SHELL
+	case $- in # ((((
+	  *v*x* | *x*v* ) as_opts=-vx ;;
+	  *v* ) as_opts=-v ;;
+	  *x* ) as_opts=-x ;;
+	  * ) as_opts= ;;
+	esac
+	exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
 fi

    if test x$as_have_required = xno; then :
@@ -367,14 +339,6 @@ $as_echo X"$as_dir" |


 } # as_fn_mkdir_p
-
-# as_fn_executable_p FILE
-# -----------------------
-# Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} # as_fn_executable_p
 # as_fn_append VAR VALUE
 # ----------------------
 # Append the text in VALUE to the end of the definition contained in VAR. Take
@@ -496,10 +460,6 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
  chmod +x "$as_me.lineno" ||
    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }

-  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
-  # already done that, so ensure we don't try to do so again and fall
-  # in an infinite loop.  This has already happened in practice.
-  _as_can_reexec=no; export _as_can_reexec
  # Don't try to exec as it changes $[0], causing all sort of problems
  # (the dirname of $[0] is not the place where we might find the
  # original and so on.  Autoconf is especially sensitive to this).
@@ -534,16 +494,16 @@ if (echo >conf$$.file) 2>/dev/null; then
    # ... but there are two gotchas:
    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
+    # In both cases, we have to default to `cp -p'.
    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
+      as_ln_s='cp -p'
  elif ln conf$$.file conf$$ 2>/dev/null; then
    as_ln_s=ln
  else
-    as_ln_s='cp -pR'
+    as_ln_s='cp -p'
  fi
 else
-  as_ln_s='cp -pR'
+  as_ln_s='cp -p'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -555,8 +515,28 @@ else
  as_mkdir_p=false
 fi

-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x

 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -590,8 +570,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.5.15beta01'
-PACKAGE_STRING='libpng 1.5.15beta01'
+PACKAGE_VERSION='1.5.11rc05'
+PACKAGE_STRING='libpng 1.5.11rc05'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''

@@ -797,7 +777,8 @@ LIBS
 CPPFLAGS
 CCAS
 CCASFLAGS
-CPP'
+CPP
+CPPFLAGS'


 # Initialize some variables set by options.
@@ -1253,6 +1234,8 @@ target=$target_alias
 if test "x$host_alias" != x; then
  if test "x$build_alias" = x; then
    cross_compiling=maybe
+    $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used" >&2
  elif test "x$build_alias" != "x$host_alias"; then
    cross_compiling=yes
  fi
@@ -1338,7 +1321,7 @@ 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 1.5.15beta01 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.11rc05 to adapt to many kinds of systems.

 Usage: $0 [OPTION]... [VAR=VALUE]...

@@ -1408,7 +1391,7 @@ fi

 if test -n "$ac_init_help"; then
  case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.5.15beta01:";;
+     short | recursive ) echo "Configuration of libpng 1.5.11rc05:";;
   esac
  cat <<\_ACEOF

@@ -1519,10 +1502,10 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
  cat <<\_ACEOF
-libpng configure 1.5.15beta01
-generated by GNU Autoconf 2.69
+libpng configure 1.5.11rc05
+generated by GNU Autoconf 2.68

-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1635,7 +1618,7 @@ $as_echo "$ac_try_echo"; } >&5
 	 test ! -s conftest.err
       } && test -s conftest$ac_exeext && {
 	 test "$cross_compiling" = yes ||
-	 test -x conftest$ac_exeext
+	 $as_test_x conftest$ac_exeext
       }; then :
  ac_retval=0
 else
@@ -1942,8 +1925,8 @@ 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 1.5.15beta01, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+It was created by libpng $as_me 1.5.11rc05, which was
+generated by GNU Autoconf 2.68.  Invocation command line was

  $ $0 $@

@@ -2358,7 +2341,7 @@ case $as_dir/ in #((
    # by default.
    for ac_prog in ginstall scoinst install; do
      for ac_exec_ext in '' $ac_executable_extensions; do
-	if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
 	  if test $ac_prog = install &&
 	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
 	    # AIX install.  It has an incompatible calling convention.
@@ -2527,7 +2510,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -2567,7 +2550,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_STRIP="strip"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -2618,7 +2601,7 @@ do
  test -z "$as_dir" && as_dir=.
    for ac_prog in mkdir gmkdir; do
 	 for ac_exec_ext in '' $ac_executable_extensions; do
-	   as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext" || continue
+	   { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
 	   case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
 	     'mkdir (GNU coreutils) '* | \
 	     'mkdir (coreutils) '* | \
@@ -2671,7 +2654,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_AWK="$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -2757,7 +2740,7 @@ fi

 # Define the identity of the package.
 PACKAGE='libpng'
- VERSION='1.5.15beta01'
+ VERSION='1.5.11rc05'


 cat >>confdefs.h <<_ACEOF
@@ -2787,11 +2770,11 @@ MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}

 # We need awk for the "check" target.  The system "awk" is bad on
 # some platforms.
-# Always define AMTAR for backward compatibility.  Yes, it's still used
-# in the wild :-(  We should find a proper way to deprecate it ...
-AMTAR='$${TAR-tar}'
+# Always define AMTAR for backward compatibility.

-am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
+AMTAR=${AMTAR-"${am_missing_run}tar"}
+
+am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'



@@ -2821,10 +2804,10 @@ fi



-PNGLIB_VERSION=1.5.15beta01
+PNGLIB_VERSION=1.5.11rc05
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
-PNGLIB_RELEASE=15
+PNGLIB_RELEASE=11



@@ -2860,7 +2843,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_CC="${ac_tool_prefix}gcc"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -2900,7 +2883,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_CC="gcc"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -2953,7 +2936,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_CC="${ac_tool_prefix}cc"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -2994,7 +2977,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
       ac_prog_rejected=yes
       continue
@@ -3052,7 +3035,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -3096,7 +3079,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_CC="$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -3542,7 +3525,8 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdarg.h>
 #include <stdio.h>
-struct stat;
+#include <sys/types.h>
+#include <sys/stat.h>
 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 struct buf { int x; };
 FILE * (*rcsopen) (struct buf *, struct stat *, int);
@@ -4044,7 +4028,7 @@ do
    for ac_prog in sed gsed; do
    for ac_exec_ext in '' $ac_executable_extensions; do
      ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_SED" || continue
+      { test -f "$ac_path_SED" && $as_test_x "$ac_path_SED"; } || continue
 # Check for GNU ac_path_SED and select it if it is found.
  # Check for GNU $ac_path_SED
 case `"$ac_path_SED" --version 2>&1` in
@@ -4120,7 +4104,7 @@ do
    for ac_prog in grep ggrep; do
    for ac_exec_ext in '' $ac_executable_extensions; do
      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_GREP" || continue
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
 # Check for GNU ac_path_GREP and select it if it is found.
  # Check for GNU $ac_path_GREP
 case `"$ac_path_GREP" --version 2>&1` in
@@ -4186,7 +4170,7 @@ do
    for ac_prog in egrep; do
    for ac_exec_ext in '' $ac_executable_extensions; do
      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_EGREP" || continue
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
 # Check for GNU ac_path_EGREP and select it if it is found.
  # Check for GNU $ac_path_EGREP
 case `"$ac_path_EGREP" --version 2>&1` in
@@ -4253,7 +4237,7 @@ do
    for ac_prog in fgrep; do
    for ac_exec_ext in '' $ac_executable_extensions; do
      ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_FGREP" || continue
+      { test -f "$ac_path_FGREP" && $as_test_x "$ac_path_FGREP"; } || continue
 # Check for GNU ac_path_FGREP and select it if it is found.
  # Check for GNU $ac_path_FGREP
 case `"$ac_path_FGREP" --version 2>&1` in
@@ -4638,7 +4622,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_SED="${ac_tool_prefix}sed"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -4678,7 +4662,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_SED="sed"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -4730,7 +4714,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_AWK="${ac_tool_prefix}awk"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -4770,7 +4754,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_AWK="awk"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -4967,7 +4951,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5011,7 +4995,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_DUMPBIN="$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5424,7 +5408,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5464,7 +5448,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_OBJDUMP="objdump"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5767,7 +5751,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5807,7 +5791,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_DLLTOOL="dlltool"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5908,7 +5892,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_AR="$ac_tool_prefix$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -5952,7 +5936,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_AR="$ac_prog"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6077,7 +6061,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6117,7 +6101,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_STRIP="strip"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6176,7 +6160,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6216,7 +6200,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_RANLIB="ranlib"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6865,7 +6849,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6905,7 +6889,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_MANIFEST_TOOL="mt"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -6985,7 +6969,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7025,7 +7009,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7077,7 +7061,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7117,7 +7101,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_NMEDIT="nmedit"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7169,7 +7153,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7209,7 +7193,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_LIPO="lipo"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7261,7 +7245,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7301,7 +7285,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_OTOOL="otool"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7353,7 +7337,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7393,7 +7377,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_OTOOL64="otool64"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7761,7 +7745,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_AS="${ac_tool_prefix}as"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7801,7 +7785,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_AS="as"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7853,7 +7837,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7893,7 +7877,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_DLLTOOL="dlltool"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7945,7 +7929,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -7985,7 +7969,7 @@ do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_ac_ct_OBJDUMP="objdump"
    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
@@ -10843,14 +10827,7 @@ freebsd* | dragonfly*)
    *) objformat=elf ;;
    esac
  fi
-  # Handle Gentoo/FreeBSD as it was Linux
-  case $host_vendor in
-    gentoo)
-      version_type=linux ;;
-    *)
-      version_type=freebsd-$objformat ;;
-  esac
-
+  version_type=freebsd-$objformat
  case $version_type in
    freebsd-elf*)
      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
@@ -10861,12 +10838,6 @@ freebsd* | dragonfly*)
      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
      need_version=yes
      ;;
-    linux)
-      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
-      soname_spec='${libname}${release}${shared_ext}$major'
-      need_lib_prefix=no
-      need_version=no
-      ;;
  esac
  shlibpath_var=LD_LIBRARY_PATH
  case $host_os in
@@ -12230,11 +12201,11 @@ else
 int
 main ()
 {
-
+/* FIXME: Include the comments suggested by Paul. */
 #ifndef __cplusplus
-  /* Ultrix mips cc rejects this sort of thing.  */
+  /* Ultrix mips cc rejects this.  */
  typedef int charset[2];
-  const charset cs = { 0, 0 };
+  const charset cs;
  /* SunOS 4.1.1 cc rejects this.  */
  char const *const *pcpcc;
  char **ppc;
@@ -12251,9 +12222,8 @@ main ()
  ++pcpcc;
  ppc = (char**) pcpcc;
  pcpcc = (char const *const *) ppc;
-  { /* SCO 3.2v4 cc rejects this sort of thing.  */
-    char tx;
-    char *t = &tx;
+  { /* SCO 3.2v4 cc rejects this.  */
+    char *t;
    char const *s = 0 ? (char *) 0 : (char const *) 0;

    *t++ = 0;
@@ -12269,10 +12239,10 @@ main ()
    iptr p = 0;
    ++p;
  }
-  { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
+  { /* AIX XL C 1.02.0.0 rejects this saying
       "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
-    struct s { int j; const int *ap[3]; } bx;
-    struct s *b = &bx; b->j = 5;
+    struct s { int j; const int *ap[3]; };
+    struct s *b; b->j = 5;
  }
  { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
    const int foo = 10;
@@ -12870,7 +12840,7 @@ AM_CCASFLAGS=-Wa,--noexecstack
 if test "${enable_arm_neon+set}" = set; then :
  enableval=$enable_arm_neon; if test "${enableval}" = yes; then

-$as_echo "#define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_neon" >>confdefs.h
+$as_echo "#define PNG_ARM_NEON 1" >>confdefs.h


 $as_echo "#define PNG_ALIGNED_MEMORY_SUPPORTED 1" >>confdefs.h
@@ -13336,16 +13306,16 @@ if (echo >conf$$.file) 2>/dev/null; then
    # ... but there are two gotchas:
    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
+    # In both cases, we have to default to `cp -p'.
    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
+      as_ln_s='cp -p'
  elif ln conf$$.file conf$$ 2>/dev/null; then
    as_ln_s=ln
  else
-    as_ln_s='cp -pR'
+    as_ln_s='cp -p'
  fi
 else
-  as_ln_s='cp -pR'
+  as_ln_s='cp -p'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -13405,16 +13375,28 @@ else
  as_mkdir_p=false
 fi

-
-# as_fn_executable_p FILE
-# -----------------------
-# Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} # as_fn_executable_p
-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x

 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -13435,8 +13417,8 @@ cat >>$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 1.5.15beta01, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+This file was extended by libpng $as_me 1.5.11rc05, which was
+generated by GNU Autoconf 2.68.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
  CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -13501,11 +13483,11 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.5.15beta01
-configured by $0, generated by GNU Autoconf 2.69,
+libpng config.status 1.5.11rc05
+configured by $0, generated by GNU Autoconf 2.68,
  with options \\"\$ac_cs_config\\"

-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."

@@ -13596,7 +13578,7 @@ fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
-  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
  shift
  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
  CONFIG_SHELL='$SHELL'
--- a/configure.ac
+++ b/configure.ac
@@ -18,20 +18,20 @@ AC_PREREQ(2.59)

 dnl Version number stuff here:

-AC_INIT([libpng], [1.5.15beta01], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.11rc05], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE

-PNGLIB_VERSION=1.5.15beta01
+PNGLIB_VERSION=1.5.11rc05
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
-PNGLIB_RELEASE=15
+PNGLIB_RELEASE=11

 dnl End of version number stuff

 AC_CONFIG_SRCDIR([pngget.c])
-AC_CONFIG_HEADERS([config.h])
+AM_CONFIG_HEADER(config.h)

 # Checks for programs.
 AC_LANG([C])
@@ -191,11 +191,8 @@ AC_SUBST([AM_CCASFLAGS], [-Wa,--noexecstack])
 AC_ARG_ENABLE([arm-neon],
 	AC_HELP_STRING([--enable-arm-neon], [Enable ARM NEON optimizations]),
 	[if test "${enableval}" = yes; then
-		AC_DEFINE([PNG_FILTER_OPTIMIZATIONS],
-                          [png_init_filter_functions_neon],
-                          [ARM NEON filter initialization function])
-		AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1],
-                          [Align row buffers])
+		AC_DEFINE([PNG_ARM_NEON], [1], [Enable ARM NEON optimizations])
+		AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1], [Align row buffers])
 	fi])
 AM_CONDITIONAL([PNG_ARM_NEON], [test "${enable_arm_neon:-no}" = yes])

--- a/contrib/gregbook/readpng.c
+++ b/contrib/gregbook/readpng.c
@@ -55,9 +55,8 @@

 #include <stdio.h>
 #include <stdlib.h>
-#include <zlib.h>

-#include "png.h"        /* libpng header */
+#include "png.h"        /* libpng header; includes zlib.h */
 #include "readpng.h"    /* typedefs, common macros, public prototypes */

 /* future versions of libpng will provide this macro: */
--- a/contrib/gregbook/writepng.c
+++ b/contrib/gregbook/writepng.c
@@ -55,9 +55,8 @@


 #include <stdlib.h>     /* for exit() prototype */
-#include <zlib.h>

-#include "png.h"        /* libpng header, includes setjmp.h */
+#include "png.h"        /* libpng header; includes zlib.h and setjmp.h */
 #include "writepng.h"   /* typedefs, common macros, public prototypes */


--- a/contrib/libtests/pngvalid.c
+++ b/contrib/libtests/pngvalid.c
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp

-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. -O1

 C=.c
 O=.o
--- a/contrib/pngminim/encoder/README
+++ b/contrib/pngminim/encoder/README
@@ -1,6 +1,6 @@
 This demonstrates the use of PNG_USER_CONFIG and pngusr.h

-The makefile builds a minimal write-only encoder with embedded libpng
+The makefile builds a minimal write-only decoder with embedded libpng
 and zlib.

 Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp

-CFLAGS=-DPNG_USER_CONFIG -DZ_SOLO -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1

 C=.c
 O=.o
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -30,7 +30,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 #LIBS = $(XLIB)
 LIBS = $(XLIB) -lm                      #platforms that need libm

-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP -I. $(XINC) -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. $(XINC) -O1

 C=.c
 O=.o
--- a/contrib/visupng/PngFile.c
+++ b/contrib/visupng/PngFile.c
@@ -13,7 +13,6 @@
 #include <commdlg.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <zlib.h>

 #include "png.h"
 #include "pngfile.h"
--- a/contrib/visupng/PngFile.h
+++ b/contrib/visupng/PngFile.h
@@ -17,7 +17,7 @@ void PngFileInitialize (HWND hwnd) ;
 BOOL PngFileOpenDlg (HWND hwnd, PTSTR pstrFileName, PTSTR pstrTitleName) ;
 BOOL PngFileSaveDlg (HWND hwnd, PTSTR pstrFileName, PTSTR pstrTitleName) ;

-BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
+BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData, 
                   int *piWidth, int *piHeight, int *piChannels, png_color *pBkgColor);
 BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
                   int iWidth, int iHeight, png_color BkgColor);
--- a/contrib/visupng/VisualPng.c
+++ b/contrib/visupng/VisualPng.c
@@ -27,7 +27,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <windows.h>
-#include <zlib.h>

 /* application includes */

--- a/191
+++ b/191
@@ -1,9 +1,10 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects

-scriptversion=2012-07-12.20; # UTC
+scriptversion=2011-12-04.11; # UTC

-# Copyright (C) 1999-2012 Free Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
+# 2011 Free Software Foundation, Inc.

 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -27,7 +28,7 @@ scriptversion=2012-07-12.20; # UTC

 case $1 in
  '')
-     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
     exit 1;
     ;;
  -h | --h*)
@@ -39,8 +40,8 @@ as side-effects.

 Environment variables:
  depmode     Dependency tracking mode.
-  source      Source file read by 'PROGRAMS ARGS'.
-  object      Object file output by 'PROGRAMS ARGS'.
+  source      Source file read by `PROGRAMS ARGS'.
+  object      Object file output by `PROGRAMS ARGS'.
  DEPDIR      directory where to store dependencies.
  depfile     Dependency file to output.
  tmpdepfile  Temporary file to use when outputting dependencies.
@@ -56,12 +57,6 @@ EOF
    ;;
 esac

-# A tabulation character.
-tab='	'
-# A newline character.
-nl='
-'
-
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
  echo "depcomp: Variables source, object and depmode must be set" 1>&2
  exit 1
@@ -74,9 +69,6 @@ tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}

 rm -f "$tmpdepfile"

-# Avoid interferences from the environment.
-gccflag= dashmflag=
-
 # Some modes work just like other modes, but use different flags.  We
 # parameterize here, but still list the modes in the big case below,
 # to make depend.m4 easier to write.  Note that we *cannot* use a case
@@ -110,12 +102,6 @@ if test "$depmode" = msvc7msys; then
   depmode=msvc7
 fi

-if test "$depmode" = xlc; then
-   # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
-   gccflag=-qmakedep=gcc,-MF
-   depmode=gcc
-fi
-
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
@@ -145,17 +131,13 @@ gcc3)
  ;;

 gcc)
-## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
-## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
-## (see the conditional assignment to $gccflag above).
 ## There are various ways to get dependency output from gcc.  Here's
 ## why we pick this rather obscure method:
 ## - Don't want to use -MD because we'd like the dependencies to end
 ##   up in a subdir.  Having to rename by hand is ugly.
 ##   (We might end up doing this anyway to support other compilers.)
 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
-##   -MM, not -M (despite what the docs say).  Also, it might not be
-##   supported by the other compilers which use the 'gcc' depmode.
+##   -MM, not -M (despite what the docs say).
 ## - Using -M directly means running the compiler twice (even worse
 ##   than renaming).
  if test -z "$gccflag"; then
@@ -174,14 +156,15 @@ gcc)
 ## The second -e expression handles DOS-style file names with drive letters.
  sed -e 's/^[^:]*: / /' \
      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
-## This next piece of magic avoids the "deleted header file" problem.
+## This next piece of magic avoids the `deleted header file' problem.
 ## The problem is that when a header file which appears in a .P file
 ## is deleted, the dependency causes make to die (because there is
 ## typically no way to rebuild the header).  We avoid this by adding
 ## dummy dependencies for each header file.  Too bad gcc doesn't do
 ## this for us directly.
-  tr ' ' "$nl" < "$tmpdepfile" |
-## Some versions of gcc put a space before the ':'.  On the theory
+  tr ' ' '
+' < "$tmpdepfile" |
+## Some versions of gcc put a space before the `:'.  On the theory
 ## that the space means something, we add a space to the output as
 ## well.  hp depmode also adds that space, but also prefixes the VPATH
 ## to the object.  Take care to not repeat it in the output.
@@ -220,15 +203,18 @@ sgi)
    # clever and replace this with sed code, as IRIX sed won't handle
    # lines with more than a fixed number of characters (4096 in
    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
-    # the IRIX cc adds comments like '#:fec' to the end of the
+    # the IRIX cc adds comments like `#:fec' to the end of the
    # dependency line.
-    tr ' ' "$nl" < "$tmpdepfile" \
+    tr ' ' '
+' < "$tmpdepfile" \
    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
-    tr "$nl" ' ' >> "$depfile"
+    tr '
+' ' ' >> "$depfile"
    echo >> "$depfile"

    # The second pass generates a dummy entry for each header file.
-    tr ' ' "$nl" < "$tmpdepfile" \
+    tr ' ' '
+' < "$tmpdepfile" \
   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
   >> "$depfile"
  else
@@ -240,17 +226,10 @@ sgi)
  rm -f "$tmpdepfile"
  ;;

-xlc)
-  # This case exists only to let depend.m4 do its work.  It works by
-  # looking at the text of this script.  This case will never be run,
-  # since it is checked for above.
-  exit 1
-  ;;
-
 aix)
  # The C for AIX Compiler uses -M and outputs the dependencies
  # in a .u file.  In older versions, this file always lives in the
-  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # current directory.  Also, the AIX compiler puts `$object:' at the
  # start of each line; $object doesn't have directory information.
  # Version 6 uses the directory in both cases.
  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
@@ -280,11 +259,12 @@ aix)
    test -f "$tmpdepfile" && break
  done
  if test -f "$tmpdepfile"; then
-    # Each line is of the form 'foo.o: dependent.h'.
+    # Each line is of the form `foo.o: dependent.h'.
    # Do two passes, one to just change these to
-    # '$object: dependent.h' and one to simply 'dependent.h:'.
+    # `$object: dependent.h' and one to simply `dependent.h:'.
    sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-    sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+    # That's a tab and a space in the [].
+    sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
  else
    # The sourcefile does not contain any dependencies, so just
    # store a dummy comment line, to avoid errors with the Makefile
@@ -295,26 +275,23 @@ aix)
  ;;

 icc)
-  # Intel's C compiler anf tcc (Tiny C Compiler) understand '-MD -MF file'.
-  # However on
-  #    $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+  # Intel's C compiler understands `-MD -MF file'.  However on
+  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
  # ICC 7.0 will fill foo.d with something like
  #    foo.o: sub/foo.c
  #    foo.o: sub/foo.h
-  # which is wrong.  We want
+  # which is wrong.  We want:
  #    sub/foo.o: sub/foo.c
  #    sub/foo.o: sub/foo.h
  #    sub/foo.c:
  #    sub/foo.h:
  # ICC 7.1 will output
  #    foo.o: sub/foo.c sub/foo.h
-  # and will wrap long lines using '\':
+  # and will wrap long lines using \ :
  #    foo.o: sub/foo.c ... \
  #     sub/foo.h ... \
  #     ...
-  # tcc 0.9.26 (FIXME still under development at the moment of writing)
-  # will emit a similar output, but also prepend the continuation lines
-  # with horizontal tabulation characters.
+
  "$@" -MD -MF "$tmpdepfile"
  stat=$?
  if test $stat -eq 0; then :
@@ -323,85 +300,6 @@ icc)
    exit $stat
  fi
  rm -f "$depfile"
-  # Each line is of the form 'foo.o: dependent.h',
-  # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
-  # Do two passes, one to just change these to
-  # '$object: dependent.h' and one to simply 'dependent.h:'.
-  sed -e "s/^[ $tab][ $tab]*/  /" -e "s,^[^:]*:,$object :," \
-    < "$tmpdepfile" > "$depfile"
-  sed '
-    s/[ '"$tab"'][ '"$tab"']*/ /g
-    s/^ *//
-    s/ *\\*$//
-    s/^[^:]*: *//
-    /^$/d
-    /:$/d
-    s/$/ :/
-  ' < "$tmpdepfile" >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-## The order of this option in the case statement is important, since the
-## shell code in configure will try each of these formats in the order
-## listed in this file.  A plain '-MD' option would be understood by many
-## compilers, so we must ensure this comes after the gcc and icc options.
-pgcc)
-  # Portland's C compiler understands '-MD'.
-  # Will always output deps to 'file.d' where file is the root name of the
-  # source file under compilation, even if file resides in a subdirectory.
-  # The object file name does not affect the name of the '.d' file.
-  # pgcc 10.2 will output
-  #    foo.o: sub/foo.c sub/foo.h
-  # and will wrap long lines using '\' :
-  #    foo.o: sub/foo.c ... \
-  #     sub/foo.h ... \
-  #     ...
-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  # Use the source, not the object, to determine the base name, since
-  # that's sadly what pgcc will do too.
-  base=`echo "$source" | sed -e 's|^.*/||' -e 's/\.[-_a-zA-Z0-9]*$//'`
-  tmpdepfile="$base.d"
-
-  # For projects that build the same source file twice into different object
-  # files, the pgcc approach of using the *source* file root name can cause
-  # problems in parallel builds.  Use a locking strategy to avoid stomping on
-  # the same $tmpdepfile.
-  lockdir="$base.d-lock"
-  trap "echo '$0: caught signal, cleaning up...' >&2; rm -rf $lockdir" 1 2 13 15
-  numtries=100
-  i=$numtries
-  while test $i -gt 0 ; do
-    # mkdir is a portable test-and-set.
-    if mkdir $lockdir 2>/dev/null; then
-      # This process acquired the lock.
-      "$@" -MD
-      stat=$?
-      # Release the lock.
-      rm -rf $lockdir
-      break
-    else
-      ## the lock is being held by a different process,
-      ## wait until the winning process is done or we timeout
-      while test -d $lockdir && test $i -gt 0; do
-        sleep 1
-        i=`expr $i - 1`
-      done
-    fi
-    i=`expr $i - 1`
-  done
-  trap - 1 2 13 15
-  if test $i -le 0; then
-    echo "$0: failed to acquire lock after $numtries attempts" >&2
-    echo "$0: check lockdir '$lockdir'" >&2
-    exit 1
-  fi
-
-  if test $stat -ne 0; then
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-  rm -f "$depfile"
  # Each line is of the form `foo.o: dependent.h',
  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
  # Do two passes, one to just change these to
@@ -446,7 +344,7 @@ hp2)
  done
  if test -f "$tmpdepfile"; then
    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
-    # Add 'dependent.h:' lines.
+    # Add `dependent.h:' lines.
    sed -ne '2,${
 	       s/^ *//
 	       s/ \\*$//
@@ -461,9 +359,9 @@ hp2)

 tru64)
   # The Tru64 compiler uses -MD to generate dependencies as a side
-   # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+   # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
-   # dependencies in 'foo.d' instead, so we check for that too.
+   # dependencies in `foo.d' instead, so we check for that too.
   # Subdirectories are respected.
   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
   test "x$dir" = "x$object" && dir=
@@ -509,7 +407,8 @@ tru64)
   done
   if test -f "$tmpdepfile"; then
      sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-      sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+      # That's a tab and a space in the [].
+      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
   else
      echo "#dummy" > "$depfile"
   fi
@@ -544,11 +443,11 @@ msvc7)
  p
 }' | $cygpath_u | sort -u | sed -n '
 s/ /\\ /g
-s/\(.*\)/'"$tab"'\1 \\/p
+s/\(.*\)/	\1 \\/p
 s/.\(.*\) \\/\1:/
 H
 $ {
-  s/.*/'"$tab"'/
+  s/.*/	/
  G
  p
 }' >> "$depfile"
@@ -579,7 +478,7 @@ dashmstdout)
    shift
  fi

-  # Remove '-o $object'.
+  # Remove `-o $object'.
  IFS=" "
  for arg
  do
@@ -599,14 +498,15 @@ dashmstdout)
  done

  test -z "$dashmflag" && dashmflag=-M
-  # Require at least two characters before searching for ':'
+  # Require at least two characters before searching for `:'
  # in the target name.  This is to cope with DOS-style filenames:
-  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
+  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
  "$@" $dashmflag |
-    sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
+    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
  rm -f "$depfile"
  cat < "$tmpdepfile" > "$depfile"
-  tr ' ' "$nl" < "$tmpdepfile" | \
+  tr ' ' '
+' < "$tmpdepfile" | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
@@ -662,7 +562,8 @@ makedepend)
  # makedepend may prepend the VPATH from the source file name to the object.
  # No need to regex-escape $object, excess matching of '.' is harmless.
  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
-  sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
+  sed '1,2d' "$tmpdepfile" | tr ' ' '
+' | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
@@ -682,7 +583,7 @@ cpp)
    shift
  fi

-  # Remove '-o $object'.
+  # Remove `-o $object'.
  IFS=" "
  for arg
  do
@@ -751,8 +652,8 @@ msvisualcpp)
  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
  rm -f "$depfile"
  echo "$object : \\" > "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
-  echo "$tab" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
+  echo "	" >> "$depfile"
  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;
--- a/example.c
+++ b/example.c
@@ -799,16 +799,12 @@ void write_png(char *file_name /* , ... other image information ... */)
    * use the first method if you aren't handling interlacing yourself.
    */
   png_uint_32 k, height, width;
-
-   /* In this example, "image" is a one-dimensional array of bytes */
-   png_byte image[height*width*bytes_per_pixel];
-
+   png_byte image[height][width*bytes_per_pixel];
   png_bytep row_pointers[height];

   if (height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
     png_error (png_ptr, "Image is too tall to process in memory");

-   /* Set up pointers into your "image" byte array */
   for (k = 0; k < height; k++)
     row_pointers[k] = image + k*width*bytes_per_pixel;

--- a/14
+++ b/14
@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile

-scriptversion=2011-11-20.07; # UTC
+scriptversion=2011-01-19.21; # UTC

 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -35,7 +35,7 @@ scriptversion=2011-11-20.07; # UTC
 # FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
-# 'make' implicit rules from creating a file called install from it
+# `make' implicit rules from creating a file called install from it
 # when there is no Makefile.
 #
 # This script is compatible with the BSD install script, but was written
@@ -156,7 +156,7 @@ while test $# -ne 0; do
    -s) stripcmd=$stripprog;;

    -t) dst_arg=$2
-	# Protect names problematic for 'test' and other utilities.
+	# Protect names problematic for `test' and other utilities.
 	case $dst_arg in
 	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
 	esac
@@ -190,7 +190,7 @@ if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
    fi
    shift # arg
    dst_arg=$arg
-    # Protect names problematic for 'test' and other utilities.
+    # Protect names problematic for `test' and other utilities.
    case $dst_arg in
      -* | [=\(\)!]) dst_arg=./$dst_arg;;
    esac
@@ -202,7 +202,7 @@ if test $# -eq 0; then
    echo "$0: no input file specified." >&2
    exit 1
  fi
-  # It's OK to call 'install-sh -d' without argument.
+  # It's OK to call `install-sh -d' without argument.
  # This can happen when creating conditional directories.
  exit 0
 fi
@@ -240,7 +240,7 @@ fi

 for src
 do
-  # Protect names problematic for 'test' and other utilities.
+  # Protect names problematic for `test' and other utilities.
  case $src in
    -* | [=\(\)!]) src=./$src;;
  esac
@@ -354,7 +354,7 @@ do
 	      if test -z "$dir_arg" || {
 		   # Check for POSIX incompatibilities with -m.
 		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writable bit of parent directory when it shouldn't.
+		   # other-writeable bit of parent directory when it shouldn't.
 		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
 		   case $ls_ld_tmpdir in
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,9 +1,9 @@
 Libpng-manual.txt - A description on how to use and modify libpng

- libpng version 1.5.15beta01 - February 5, 2013
+ libpng version 1.5.11rc05 - June 7, 2012
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson

 This document is released under the libpng license.
 For conditions of distribution and use, see the disclaimer
@@ -11,9 +11,9 @@ Libpng-manual.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.5.15beta01 - February 5, 2013
+ libpng versions 0.97, January 1998, through 1.5.11rc05 - June 7, 2012
 Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ Copyright (c) 1998-2011 Glenn Randers-Pehrson

 libpng 1.0 beta 6  version 0.96 May 28, 1997
 Updated and distributed by Andreas Dilger
@@ -48,7 +48,7 @@ of reducing the amount of time and effort it takes to support the PNG
 file format in application programs.

 The PNG specification (second edition), November 2003, is available as
-a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2004 (E)) at
+a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
 <http://www.w3.org/TR/2003/REC-PNG-20031110/
 The W3C and ISO documents have identical technical content.

@@ -141,8 +141,8 @@ APIs.  Most of these are fairly obvious; for example types corresponding
 to integers of particular sizes and types for passing color values.

 One exception is how non-integral numbers are handled.  For application
-convenience most APIs that take such numbers have C (double) arguments;
-however, internally PNG, and libpng, use 32 bit signed integers and encode
+convenience most APIs that take such numbers have C (double) arguments,
+however internally PNG, and libpng, use 32 bit signed integers and encode
 the value by multiplying by 100,000.  As of libpng 1.5.0 a convenience
 macro PNG_FP_1 is defined in png.h along with a type (png_fixed_point)
 which is simply (png_int_32).
@@ -650,6 +650,9 @@ where 0x7fffffffL means unlimited.  You can retrieve this limit with

   chunk_cache_max = png_get_chunk_cache_max(png_ptr);

+This limit also applies to the number of buffers that can be allocated
+by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
+
 You can also set a limit on the amount of memory that a compressed chunk
 other than IDAT can occupy, with

@@ -720,11 +723,11 @@ Libpng only supports composing onto a single color (using png_set_background;
 see below).  Otherwise you must do the composition yourself and, in this case,
 you may need to call png_set_alpha_mode:

-    #if PNG_LIBPNG_VER >= 10504
-       png_set_alpha_mode(png_ptr, mode, screen_gamma);
-    #else
-       png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
-    #endif
+#if PNG_LIBPNG_VER >= 10504
+   png_set_alpha_mode(png_ptr, mode, screen_gamma);
+#else
+   png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
+#endif

 The screen_gamma value is the same as the argument to png_set_gamma; however,
 how it affects the output depends on the mode.  png_set_alpha_mode() sets the
@@ -1149,8 +1152,8 @@ gamma when combining semitransparent pixels with the background color.
    int_file_gamma - 100,000 times the gamma at which the
                     file is written

-    png_get_cHRM(png_ptr, info_ptr,  &white_x, &white_y, &red_x,
-                     &red_y, &green_x, &green_y, &blue_x, &blue_y)
+    png_get_cHRM(png_ptr, info_ptr,  &white_x, &white_y, &red_x, &red_y,
+                     &green_x, &green_y, &blue_x, &blue_y)
    png_get_cHRM_XYZ(png_ptr, info_ptr, &red_X, &red_Y, &red_Z, &green_X,
                     &green_Y, &green_Z, &blue_X, &blue_Y, &blue_Z)
    png_get_cHRM_fixed(png_ptr, info_ptr, &int_white_x, &int_white_y,
@@ -1161,9 +1164,8 @@ gamma when combining semitransparent pixels with the background color.
                     &int_blue_X, &int_blue_Y, &int_blue_Z)

    {white,red,green,blue}_{x,y}
-                     A color space encoding specified using the
-                     chromaticities of the end points and the
-                     white point. (PNG_INFO_cHRM)
+                     A color space encoding specified using the chromaticities
+                     of the end points and the white point. (PNG_INFO_cHRM)

    {red,green,blue}_{X,Y,Z}
                     A color space encoding specified using the encoding end
@@ -1574,19 +1576,17 @@ Within the matrix,
     "A" means the transformation is obtained by png_set_add_alpha().
     "X" means the transformation is obtained by png_set_expand().
     "1" means the transformation is obtained by
-         png_set_expand_gray_1_2_4_to_8() (and by png_set_expand()
-         if there is no transparency in the original or the final
-         format).
+         png_set_expand_gray_1_2_4_to_8() (and by png_set_expand() if there
+         is no transparency in the original or the final format).
     "C" means the transformation is obtained by png_set_gray_to_rgb().
     "G" means the transformation is obtained by png_set_rgb_to_gray().
     "P" means the transformation is obtained by
         png_set_expand_palette_to_rgb().
     "p" means the transformation is obtained by png_set_packing().
     "Q" means the transformation is obtained by png_set_quantize().
-     "T" means the transformation is obtained by
-         png_set_tRNS_to_alpha().
-     "B" means the transformation is obtained by
-         png_set_background(), or png_strip_alpha().
+     "T" means the transformation is obtained by png_set_tRNS_to_alpha().
+     "B" means the transformation is obtained by png_set_background(), or
+         png_strip_alpha().

 When an entry has multiple transforms listed all are required to cause the
 right overall transformation.  When two transforms are separated by a comma
@@ -1671,8 +1671,8 @@ with alpha.

    if (color_type == PNG_COLOR_TYPE_RGB ||
        color_type == PNG_COLOR_TYPE_RGB_ALPHA)
-       png_set_rgb_to_gray(png_ptr, error_action,
-          double red_weight, double green_weight);
+       png_set_rgb_to_gray(png_ptr, error_action, double red_weight,
+          double green_weight);

    error_action = 1: silently do the conversion

@@ -1694,8 +1694,7 @@ with alpha.
 In the corresponding fixed point API the red_weight and green_weight values are
 simply scaled by 100,000:

-    png_set_rgb_to_gray(png_ptr, error_action,
-       png_fixed_point red_weight,
+    png_set_rgb_to_gray(png_ptr, error_action, png_fixed_point red_weight,
       png_fixed_point green_weight);

 If you have set error_action = 1 or 2, you can
@@ -1739,7 +1738,7 @@ the current display (e.g., the background color from a web page).  You
 need to tell libpng how the color is represented, both the format of the
 component values in the color (the number of bits) and the gamma encoding of the
 color.  The function takes two arguments, background_gamma_mode and need_expand
-to convey this information; however, only two combinations are likely to be
+to convey this information, however only two combinations are likely to be
 useful:

    png_color_16 my_background;
@@ -2033,7 +2032,7 @@ the second parameter NULL.

 If you don't want libpng to handle the interlacing details, just call
 png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
-Each of the images is a valid image by itself; however, you will almost
+Each of the images is a valid image by itself, however you will almost
 certainly need to distribute the pixels from each sub-image to the
 correct place.  This is where everything gets very tricky.

@@ -2190,7 +2189,7 @@ sPLT, only the n'th item in the structure is freed, where n is "seq".
 The default behavior is only to free data that was allocated internally
 by libpng.  This can be changed, so that libpng will not free the data,
 or so that it will free data that was allocated by the user with png_malloc()
-or png_calloc() and passed in via a png_set_*() function, with
+or png_zalloc() and passed in via a png_set_*() function, with

    png_data_freer(png_ptr, info_ptr, freer, mask)

@@ -2211,7 +2210,7 @@ or png_destroy_*() is supposed to free the data.  When the user assumes
 responsibility for libpng-allocated data, the application must use
 png_free() to free it, and when the user transfers responsibility to libpng
 for data that the user has allocated, the user must have used png_malloc()
-or png_calloc() to allocate it.
+or png_zalloc() to allocate it.

 If you allocated your row_pointers in a single block, as suggested above in
 the description of the high level read interface, you must not transfer
@@ -3029,8 +3028,8 @@ tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
 although this isn't a requirement.  Unlike the tIME chunk, the
 "Creation Time" tEXt chunk is not expected to be automatically changed
 by the software.  To facilitate the use of RFC 1123 dates, a function
-png_convert_to_rfc1123(png_ptr, png_timep) is provided to convert
-from PNG time to an RFC 1123 format string.
+png_convert_to_rfc1123(png_timep) is provided to convert from PNG
+time to an RFC 1123 format string.

 Writing unknown chunks

@@ -3392,7 +3391,7 @@ png_destroy_write_struct().
 The default behavior is only to free data that was allocated internally
 by libpng.  This can be changed, so that libpng will not free the data,
 or so that it will free data that was allocated by the user with png_malloc()
-or png_calloc() and passed in via a png_set_*() function, with
+or png_zalloc() and passed in via a png_set_*() function, with

    png_data_freer(png_ptr, info_ptr, freer, mask)

@@ -3428,7 +3427,7 @@ When the user assumes responsibility for libpng-allocated data, the
 application must use
 png_free() to free it, and when the user transfers responsibility to libpng
 for data that the user has allocated, the user must have used png_malloc()
-or png_calloc() to allocate it.
+or png_zalloc() to allocate it.

 If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
 separately, do not transfer responsibility for freeing text_ptr to libpng,
@@ -3456,13 +3455,12 @@ in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively.  To change
 these functions, call the appropriate png_set_*_fn() function.

 Memory allocation is done through the functions png_malloc(), png_calloc(),
-and png_free().  The png_malloc() and png_free() functions currently just
-call the standard C functions and png_calloc() calls png_malloc() and then
-clears the newly allocated memory to zero; note that png_calloc(png_ptr, size)
-is not the same as the calloc(number, size) function provided by stdlib.h.
-There is limited support for certain systems with segmented memory
-architectures and the types of pointers declared by png.h match this; you
-will have to use appropriate pointers in your application.  Since it is
+and png_free().  These currently just call the standard C functions.
+png_calloc() calls png_malloc() and then clears the newly
+allocated memory to zero.  There is limited support for certain systems
+with segmented memory architectures and the types of pointers declared by
+png.h match this; you will have to use appropriate pointers in your
+application.  Since it is
 unlikely that the method of handling memory allocation on a platform
 will change between applications, these functions must be modified in
 the library at compile time.  If you prefer to use a different method
@@ -3692,7 +3690,7 @@ available to set these separately for non-IDAT
 compressed chunks such as zTXt, iTXt, and iCCP:

    #include zlib.h
-    #if PNG_LIBPNG_VER >= 10504
+    #if PNG_LIBPNG_VER <= 10504
    png_set_text_compression_level(png_ptr, level);

    png_set_text_compression_mem_level(png_ptr, level);
@@ -4091,8 +4089,8 @@ png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
 png_set_asm_flags(), and png_mmx_supported()

 We removed the obsolete png_check_sig(), png_memcpy_check(), and
-png_memset_check() functions.  Instead use !png_sig_cmp(), png_memcpy(),
-and png_memset(), respectively.
+png_memset_check() functions.  Instead use !png_sig_cmp(), memcpy(),
+and memset(), respectively.

 The function png_set_gray_1_2_4_to_8() was removed. It has been
 deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
@@ -4129,9 +4127,7 @@ png_set_strip_error_numbers() was removed from the library by default.

 The png_zalloc() and png_zfree() functions are no longer exported.
 The png_zalloc() function no longer zeroes out the memory that it
-allocates.  Applications that called png_zalloc(png_ptr, number, size)
-can call png_calloc(png_ptr, number*size) instead, and can call
-png_free() instead of png_zfree().
+allocates.

 Support for dithering was disabled by default in libpng-1.4.0, because
 it has not been well tested and doesn't actually "dither".
@@ -4161,20 +4157,12 @@ This is enabled by default but can be disabled in each png_ptr with
                 0: disable
                 1: enable

-Retrieving the maximum palette index found was added at libpng-1.5.15.
-This statement must appear after png_read_png() or png_read_image().
-
-   int max_palette = png_get_palette_max(png_ptr, info_ptr);
-
-This will return the maximum palette index found, or "-1" if the palette
-was not checked, or "0" if no palette was found.
-
 A. Changes that affect users of libpng

 There are no substantial API changes between the non-deprecated parts of
-the 1.4.5 API and the 1.5.0 API; however, the ability to directly access
-members of the main libpng control structures, png_struct and png_info,
-deprecated in earlier versions of libpng, has been completely removed from
+the 1.4.5 API and the 1.5.0 API, however the ability to directly access
+the main libpng control structures, png_struct and png_info, deprecated
+in earlier versions of libpng, has been completely removed from
 libpng 1.5.

 We no longer include zlib.h in png.h.  Applications that need access
@@ -4182,12 +4170,9 @@ to information in zlib.h will need to add the '#include "zlib.h"'
 directive.  It does not matter whether it is placed prior to or after
 the '"#include png.h"' directive.

-The png_sprintf(), png_strcpy(), and png_strncpy() macros are no longer used
-and were removed.
-
-We moved the png_strlen(), png_memcpy(), png_memset(), and png_memcmp()
-macros into a private header file (pngpriv.h) that is not accessible to
-applications.
+We moved the png_strcpy(), png_strncpy(), png_strlen(), png_memcpy(),
+png_memcmp(), png_sprintf, and png_memcpy() macros into a private
+header file (pngpriv.h) that is not accessible to applications.

 In png_get_iCCP, the type of "profile" was changed from png_charpp
 to png_bytepp, and in png_set_iCCP, from png_charp to png_const_bytep.
@@ -4308,12 +4293,12 @@ B. Changes to the build and configuration of libpng

 Details of internal changes to the library code can be found in the CHANGES
 file and in the GIT repository logs.  These will be of no concern to the vast
-majority of library users or builders; however, the few who configure libpng
+majority of library users or builders, however the few who configure libpng
 to a non-default feature set may need to change how this is done.

 There should be no need for library builders to alter build scripts if
 these use the distributed build support - configure or the makefiles -
-however, users of the makefiles may care to update their build scripts
+however users of the makefiles may care to update their build scripts
 to build pnglibconf.h where the corresponding makefile does not do so.

 Building libpng with a non-default configuration has changed completely.
@@ -4419,7 +4404,7 @@ merely stops the function from being exported.
 PNG_FLOATING_ARITHMETIC_SUPPORTED chooses between the internal floating
 point implementation or the fixed point one.  Typically the fixed point
 implementation is larger and slower than the floating point implementation
-on a system that supports floating point; however, it may be faster on a
+on a system that supports floating point, however it may be faster on a
 system which lacks floating point hardware and therefore uses a software
 emulation.

@@ -4448,7 +4433,7 @@ pngconf.h no longer includes pngusr.h, therefore pngusr.h is ignored after the
 build of pnglibconf.h and it is never included in an application build.

 The rarely used alternative of adding a list of feature macros to the
-CFLAGS setting in the build also still works; however, the macros will be
+CFLAGS setting in the build also still works, however the macros will be
 copied to pnglibconf.h and this may produce macro redefinition warnings
 when the individual C files are compiled.

@@ -4586,7 +4571,7 @@ pngtest) appear in
 pngpriv.h
 above the comment that says

-  /* Maintainer: Put new private prototypes here ^ */
+  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */

 To avoid polluting the global namespace, the names of all exported
 functions and variables begin with "png_", and all publicly visible C
@@ -4603,7 +4588,7 @@ left parenthesis that follows it:
    for (i = 2; i > 0; --i)
       y[i] = a(x) + (int)b;

-We prefer #ifdef and #ifndef to #if defined() and #if !defined()
+We prefer #ifdef and #ifndef to #if defined() and if !defined()
 when there is only one macro being tested.

 We prefer to express integers that are used as bit masks in hex format,
@@ -4617,25 +4602,25 @@ Other rules can be inferred by inspecting the libpng source.

 XIV. Y2K Compliance in libpng

-February 5, 2013
+June 7, 2012

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.5.15beta01 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.11rc05 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

-Libpng only has two year fields.  One is a 2-byte unsigned integer that
-will hold years up to 65535.  The other holds the date in text
+Libpng only has three year fields.  One is a 2-byte unsigned integer that
+will hold years up to 65535.  The other two hold the date in text
 format, and will hold years up to 9999.

 The integer is
    "png_uint_16 year" in png_time_struct.

-The string is
-    "char time_buffer[29]" in png_struct.  This will no
-longer be used in libpng-1.6.x and will be removed from libpng-1.7.0.
+The strings are
+    "png_charp time_buffer" in png_struct and
+    "near_time_buffer", which is a local character string in png.c.

 There are seven time-related functions:

--- a/libpng.3
+++ b/libpng.3
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,11 +1,21 @@
-.TH LIBPNGPF 3 "February 5, 2013"
+.TH LIBPNGPF 3 "June 7, 2012"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.15beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.11rc05
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"

-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now that the private function prototypes are hidden in pngpriv.h and not accessible to applications. Look in pngpriv.h for the prototypes and a short description of each \fIfunction.
+\fI\fB
+
+\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now \fIthat
+
+\fBthe private function prototypes are hidden in pngpriv.h and not \fIaccessible
+
+\fBto applications. Look in pngpriv.h for the prototypes and a short \fIdescription
+
+\fBof each \fIfunction.
+
+\fI\fB

 .SH DESCRIPTION
 The functions previously listed here are used privately by libpng
--- a/148
+++ b/148
@@ -1,9 +1,10 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.

-scriptversion=2012-01-06.18; # UTC
+scriptversion=2009-04-28.21; # UTC

-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009 Free Software Foundation, Inc.
 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.

 # This program is free software; you can redistribute it and/or modify
@@ -25,7 +26,7 @@ scriptversion=2012-01-06.18; # UTC
 # the same distribution terms that you use for the rest of that program.

 if test $# -eq 0; then
-  echo 1>&2 "Try '$0 --help' for more information"
+  echo 1>&2 "Try \`$0 --help' for more information"
  exit 1
 fi

@@ -33,7 +34,7 @@ run=:
 sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
 sed_minuso='s/.* -o \([^ ]*\).*/\1/p'

-# In the cases where this matters, 'missing' is being run in the
+# In the cases where this matters, `missing' is being run in the
 # srcdir already.
 if test -f configure.ac; then
  configure_ac=configure.ac
@@ -64,7 +65,7 @@ case $1 in
    echo "\
 $0 [OPTION]... PROGRAM [ARGUMENT]...

-Handle 'PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
 error status if there is no known handling for PROGRAM.

 Options:
@@ -73,20 +74,21 @@ Options:
  --run           try to run the given command, and emulate it if it fails

 Supported PROGRAM values:
-  aclocal      touch file 'aclocal.m4'
-  autoconf     touch file 'configure'
-  autoheader   touch file 'config.h.in'
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
  autom4te     touch the output file, or create a stub one
-  automake     touch all 'Makefile.in' files
-  bison        create 'y.tab.[ch]', if possible, from existing .[ch]
-  flex         create 'lex.yy.c', if possible, from existing .c
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
  help2man     touch the output file
-  lex          create 'lex.yy.c', if possible, from existing .c
+  lex          create \`lex.yy.c', if possible, from existing .c
  makeinfo     touch the output file
-  yacc         create 'y.tab.[ch]', if possible, from existing .[ch]
+  tar          try tar, gnutar, gtar, then tar without non-portable flags
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]

-Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
-'g' are ignored when checking the name.
+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.

 Send bug reports to <bug-automake@gnu.org>."
    exit $?
@@ -98,8 +100,8 @@ Send bug reports to <bug-automake@gnu.org>."
    ;;

  -*)
-    echo 1>&2 "$0: Unknown '$1' option"
-    echo 1>&2 "Try '$0 --help' for more information"
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
    exit 1
    ;;

@@ -120,13 +122,22 @@ case $1 in
    # Not GNU programs, they don't have --version.
    ;;

+  tar*)
+    if test -n "$run"; then
+       echo 1>&2 "ERROR: \`tar' requires --run"
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       exit 1
+    fi
+    ;;
+
  *)
    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
       # We have it, but it failed.
       exit 1
    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
       # Could not run --version or --help.  This is probably someone
-       # running '$TOOL --version' or '$TOOL --help' to check whether
+       # running `$TOOL --version' or `$TOOL --help' to check whether
       # $TOOL exists and not knowing $TOOL uses missing.
       exit 1
    fi
@@ -138,27 +149,27 @@ esac
 case $program in
  aclocal*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
-         you modified 'acinclude.m4' or '${configure_ac}'.  You might want
-         to install the Automake and Perl packages.  Grab them from
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
         any GNU archive site."
    touch aclocal.m4
    ;;

  autoconf*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
-         you modified '${configure_ac}'.  You might want to install the
-         Autoconf and GNU m4 packages.  Grab them from any GNU
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`${configure_ac}'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
         archive site."
    touch configure
    ;;

  autoheader*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
-         you modified 'acconfig.h' or '${configure_ac}'.  You might want
-         to install the Autoconf and GNU m4 packages.  Grab them
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
         from any GNU archive site."
    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
    test -z "$files" && files="config.h"
@@ -175,9 +186,9 @@ WARNING: '$1' is $msg.  You should only need it if

  automake*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
-         you modified 'Makefile.am', 'acinclude.m4' or '${configure_ac}'.
-         You might want to install the Automake and Perl packages.
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+         You might want to install the \`Automake' and \`Perl' packages.
         Grab them from any GNU archive site."
    find . -type f -name Makefile.am -print |
 	   sed 's/\.am$/.in/' |
@@ -186,10 +197,10 @@ WARNING: '$1' is $msg.  You should only need it if

  autom4te*)
    echo 1>&2 "\
-WARNING: '$1' is needed, but is $msg.
+WARNING: \`$1' is needed, but is $msg.
         You might have modified some files without having the
         proper tools for further handling them.
-         You can get '$1' as part of Autoconf from any GNU
+         You can get \`$1' as part of \`Autoconf' from any GNU
         archive site."

    file=`echo "$*" | sed -n "$sed_output"`
@@ -209,13 +220,13 @@ WARNING: '$1' is needed, but is $msg.

  bison*|yacc*)
    echo 1>&2 "\
-WARNING: '$1' $msg.  You should only need it if
-         you modified a '.y' file.  You may need the Bison package
+WARNING: \`$1' $msg.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
         in order for those modifications to take effect.  You can get
-         Bison from any GNU archive site."
+         \`Bison' from any GNU archive site."
    rm -f y.tab.c y.tab.h
    if test $# -ne 1; then
-        eval LASTARG=\${$#}
+        eval LASTARG="\${$#}"
 	case $LASTARG in
 	*.y)
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
@@ -239,13 +250,13 @@ WARNING: '$1' $msg.  You should only need it if

  lex*|flex*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
-         you modified a '.l' file.  You may need the Flex package
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
         in order for those modifications to take effect.  You can get
-         Flex from any GNU archive site."
+         \`Flex' from any GNU archive site."
    rm -f lex.yy.c
    if test $# -ne 1; then
-        eval LASTARG=\${$#}
+        eval LASTARG="\${$#}"
 	case $LASTARG in
 	*.l)
 	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
@@ -262,10 +273,10 @@ WARNING: '$1' is $msg.  You should only need it if

  help2man*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
+WARNING: \`$1' is $msg.  You should only need it if
 	 you modified a dependency of a manual page.  You may need the
-	 Help2man package in order for those modifications to take
-	 effect.  You can get Help2man from any GNU archive site."
+	 \`Help2man' package in order for those modifications to take
+	 effect.  You can get \`Help2man' from any GNU archive site."

    file=`echo "$*" | sed -n "$sed_output"`
    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
@@ -280,12 +291,12 @@ WARNING: '$1' is $msg.  You should only need it if

  makeinfo*)
    echo 1>&2 "\
-WARNING: '$1' is $msg.  You should only need it if
-         you modified a '.texi' or '.texinfo' file, or any other file
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
         indirectly affecting the aspect of the manual.  The spurious
-         call might also be the consequence of using a buggy 'make' (AIX,
-         DU, IRIX).  You might want to install the Texinfo package or
-         the GNU make package.  Grab either from any GNU archive site."
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
    # The file to touch is that specified with -o ...
    file=`echo "$*" | sed -n "$sed_output"`
    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
@@ -307,14 +318,49 @@ WARNING: '$1' is $msg.  You should only need it if
    touch $file
    ;;

+  tar*)
+    shift
+
+    # We have already tried tar in the generic part.
+    # Look for gnutar/gtar before invocation to avoid ugly error
+    # messages.
+    if (gnutar --version > /dev/null 2>&1); then
+       gnutar "$@" && exit 0
+    fi
+    if (gtar --version > /dev/null 2>&1); then
+       gtar "$@" && exit 0
+    fi
+    firstarg="$1"
+    if shift; then
+	case $firstarg in
+	*o*)
+	    firstarg=`echo "$firstarg" | sed s/o//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+	case $firstarg in
+	*h*)
+	    firstarg=`echo "$firstarg" | sed s/h//`
+	    tar "$firstarg" "$@" && exit 0
+	    ;;
+	esac
+    fi
+
+    echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+         You may want to install GNU tar or Free paxutils, or check the
+         command line arguments."
+    exit 1
+    ;;
+
  *)
    echo 1>&2 "\
-WARNING: '$1' is needed, and is $msg.
+WARNING: \`$1' is needed, and is $msg.
         You might have modified some files without having the
-         proper tools for further handling them.  Check the 'README' file,
+         proper tools for further handling them.  Check the \`README' file,
         it often tells you about the needed prerequisites for installing
         this package.  You may also peek at any GNU archive site, in case
-         some other package would contain this missing '$1' program."
+         some other package would contain this missing \`$1' program."
    exit 1
    ;;
 esac
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "February 5, 2013"
+.TH PNG 5 "June 7, 2012"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
--- a/png.c
+++ b/png.c
@@ -1,8 +1,8 @@

 /* png.c - location for general purpose libpng functions
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.11 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -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_5_15beta01 Your_png_h_is_not_version_1_5_15beta01;
+typedef png_libpng_version_1_5_11rc05 Your_png_h_is_not_version_1_5_11rc05;

 /* 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
@@ -73,16 +73,13 @@ PNG_FUNCTION(voidpf /* PRIVATE */,
 png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED)
 {
   png_voidp ptr;
-   png_structp p;
-   png_uint_32 save_flags;
+   png_structp p=(png_structp)png_ptr;
+   png_uint_32 save_flags=p->flags;
   png_alloc_size_t num_bytes;

   if (png_ptr == NULL)
      return (NULL);

-   p=(png_structp)png_ptr;
-   save_flags=p->flags;
-
   if (items > PNG_UINT_32_MAX/size)
   {
     png_warning (p, "Potential overflow in png_zalloc()");
@@ -658,14 +655,14 @@ png_get_copyright(png_const_structp png_ptr)
 #else
 #  ifdef __STDC__
   return PNG_STRING_NEWLINE \
-     "libpng version 1.5.15beta01 - February 5, 2013" PNG_STRING_NEWLINE \
-     "Copyright (c) 1998-2013 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+     "libpng version 1.5.11rc05 - June 7, 2012" PNG_STRING_NEWLINE \
+     "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
     "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
     "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
     PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.15beta01 - February 5, 2013\
-      Copyright (c) 1998-2013 Glenn Randers-Pehrson\
+      return "libpng version 1.5.11rc05 - June 7, 2012\
+      Copyright (c) 1998-2011 Glenn Randers-Pehrson\
      Copyright (c) 1996-1997 Andreas Dilger\
      Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
 #  endif
@@ -1461,7 +1458,7 @@ png_check_fp_string(png_const_charp string, png_size_t size)
 }
 #endif /* pCAL or sCAL */

-#ifdef PNG_sCAL_SUPPORTED
+#ifdef PNG_READ_sCAL_SUPPORTED
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 /* Utility used below - a simple accurate power of ten from an integral
 * exponent.
@@ -2047,8 +2044,7 @@ png_muldiv_warn(png_structp png_ptr, png_fixed_point a, png_int_32 times,
 }
 #endif

-#if (defined PNG_READ_GAMMA_SUPPORTED) || (defined PNG_cHRM_SUPPORTED)
-/* more fixed point functions for gamma and cHRM (xy/XYZ) suport. */
+#ifdef PNG_READ_GAMMA_SUPPORTED /* more fixed point functions for gamma */
 /* Calculate a reciprocal, return 0 on div-by-zero or overflow. */
 png_fixed_point
 png_reciprocal(png_fixed_point a)
@@ -2068,7 +2064,6 @@ png_reciprocal(png_fixed_point a)
   return 0; /* error/overflow */
 }

-#ifdef PNG_READ_GAMMA_SUPPORTED
 /* A local convenience routine. */
 static png_fixed_point
 png_product2(png_fixed_point a, png_fixed_point b)
@@ -2090,7 +2085,6 @@ png_product2(png_fixed_point a, png_fixed_point b)

   return 0; /* overflow */
 }
-#endif /* READ_GAMMA */

 /* The inverse of the above. */
 png_fixed_point
@@ -2118,7 +2112,7 @@ png_reciprocal2(png_fixed_point a, png_fixed_point b)

   return 0; /* overflow */
 }
-#endif /* READ_GAMMA || cHRM */
+#endif /* READ_GAMMA */

 #ifdef PNG_CHECK_cHRM_SUPPORTED
 /* Added at libpng version 1.2.34 (Dec 8, 2008) and 1.4.0 (Jan 2,
--- a/png.h
+++ b/png.h
@@ -1,8 +1,8 @@

 /* png.h - header file for PNG reference library
 *
- * libpng version 1.5.15beta01 - February 5, 2013
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * libpng version 1.5.11rc05 - June 7, 2012
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -11,7 +11,7 @@
 * Authors and maintainers:
 *   libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
 *   libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *   libpng versions 0.97, January 1998, through 1.5.15beta01 - February 5, 2013: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.11rc05 - June 7, 2012: Glenn
 *   See also "Contributing Authors", below.
 *
 * Note about libpng version numbers:
@@ -176,15 +176,6 @@
 *    1.5.10                  15    10510  15.so.15.10[.0]
 *    1.5.11beta01            15    10511  15.so.15.11[.0]
 *    1.5.11rc01-05           15    10511  15.so.15.11[.0]
- *    1.5.11                  15    10511  15.so.15.11[.0]
- *    1.5.12                  15    10512  15.so.15.12[.0]
- *    1.5.13beta01-02         15    10513  15.so.15.13[.0]
- *    1.5.13rc01              15    10513  15.so.15.13[.0]
- *    1.5.13                  15    10513  15.so.15.13[.0]
- *    1.5.14beta01-08         15    10514  15.so.15.14[.0]
- *    1.5.14rc01-03           15    10514  15.so.15.14[.0]
- *    1.5.14                  15    10514  15.so.15.14[.0]
- *    1.5.15beta01            15    10515  15.so.15.15[.0]
 *
 *   Henceforth the source version will match the shared-library major
 *   and minor numbers; the shared-library major version number will be
@@ -216,8 +207,8 @@
 *
 * This code is released under the libpng license.
 *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.15beta01, February 5, 2013, are
- * Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.11rc05, June 7, 2012, are
+ * Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
 * distributed according to the same disclaimer and license as libpng-1.2.5
 * with the following individual added to the list of Contributing Authors:
 *
@@ -328,13 +319,13 @@
 * Y2K compliance in libpng:
 * =========================
 *
- *    February 5, 2013
+ *    June 7, 2012
 *
 *    Since the PNG Development group is an ad-hoc body, we can't make
 *    an official declaration.
 *
 *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.5.15beta01 are Y2K compliant.  It is my belief that
+ *    upward through 1.5.11rc05 are Y2K compliant.  It is my belief that
 *    earlier versions were also Y2K compliant.
 *
 *    Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -345,8 +336,7 @@
 *        "png_uint_16 year" in png_time_struct.
 *
 *    The string is
- *        "char time_buffer[29]" in png_struct.  This will be no
- *    longer used in libpng-1.6.0 and will be removed from libpng-1.7.0.
+ *        "png_char time_buffer" in png_struct
 *
 *    There are seven time-related functions:
 *        png.c: png_convert_to_rfc_1123() in png.c
@@ -393,9 +383,9 @@
 */

 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.15beta01"
+#define PNG_LIBPNG_VER_STRING "1.5.11rc05"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.15beta01 - February 5, 2013\n"
+     " libpng version 1.5.11rc05 - June 7, 2012\n"

 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -403,13 +393,13 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   5
-#define PNG_LIBPNG_VER_RELEASE 15
+#define PNG_LIBPNG_VER_RELEASE 11

 /* This should match the numeric part of the final component of
 * PNG_LIBPNG_VER_STRING, omitting any leading zero:
 */

-#define PNG_LIBPNG_VER_BUILD  01
+#define PNG_LIBPNG_VER_BUILD  05

 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -426,7 +416,7 @@
 #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_RC

 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
 * We must not include leading zeros.
@@ -434,7 +424,7 @@
 * version 1.0.0 was mis-numbered 100 instead of 10000).  From
 * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
 */
-#define PNG_LIBPNG_VER 10515 /* 1.5.15 */
+#define PNG_LIBPNG_VER 10511 /* 1.5.11 */

 /* Library configuration: these options cannot be changed after
 * the library has been built.
@@ -467,7 +457,7 @@

 /* Machine specific configuration. */
 #  include "pngconf.h"
-#endif /* PNG_VERSION_INFO_ONLY */
+#endif

 /*
 * Added at libpng-1.2.8
@@ -556,7 +546,7 @@ 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_5_15beta01;
+typedef char* png_libpng_version_1_5_11rc05;

 /* Three color definitions.  The order of the red, green, and blue, (and the
 * exact size) is not important, although the size of the fields need to
@@ -1165,9 +1155,9 @@ PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structp png_ptr));
 #define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/

 PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structp png_ptr,
-    int error_action, double red, double green))
+    int error_action, double red, double green));
 PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structp png_ptr,
-    int error_action, png_fixed_point red, png_fixed_point green))
+    int error_action, png_fixed_point red, png_fixed_point green));

 PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structp
    png_ptr));
@@ -1235,9 +1225,9 @@ PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth,
 #define PNG_ALPHA_BROKEN        3 /* the alpha channel is gamma encoded */

 PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structp png_ptr, int mode,
-    double output_gamma))
+    double output_gamma));
 PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structp png_ptr,
-    int mode, png_fixed_point output_gamma))
+    int mode, png_fixed_point output_gamma));
 #endif

 #if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED)
@@ -1460,10 +1450,10 @@ PNG_EXPORT(46, void, png_set_invert_mono, (png_structp png_ptr));
 */
 PNG_FP_EXPORT(47, void, png_set_background, (png_structp png_ptr,
    png_const_color_16p background_color, int background_gamma_code,
-    int need_expand, double background_gamma))
+    int need_expand, double background_gamma));
 PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structp png_ptr,
    png_const_color_16p background_color, int background_gamma_code,
-    int need_expand, png_fixed_point background_gamma))
+    int need_expand, png_fixed_point background_gamma));
 #endif
 #ifdef PNG_READ_BACKGROUND_SUPPORTED
 #  define PNG_BACKGROUND_GAMMA_UNKNOWN 0
@@ -1512,9 +1502,9 @@ PNG_EXPORT(49, void, png_set_quantize,
 */
 PNG_FP_EXPORT(50, void, png_set_gamma,
    (png_structp png_ptr, double screen_gamma,
-    double override_file_gamma))
+    double override_file_gamma));
 PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structp png_ptr,
-    png_fixed_point screen_gamma, png_fixed_point override_file_gamma))
+    png_fixed_point screen_gamma, png_fixed_point override_file_gamma));
 #endif

 #ifdef PNG_WRITE_FLUSH_SUPPORTED
@@ -1674,11 +1664,11 @@ PNG_EXPORT(67, void, png_set_filter,
 */
 PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structp png_ptr,
    int heuristic_method, int num_weights, png_const_doublep filter_weights,
-    png_const_doublep filter_costs))
+    png_const_doublep filter_costs));
 PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
    (png_structp png_ptr,
    int heuristic_method, int num_weights, png_const_fixed_point_p
-    filter_weights, png_const_fixed_point_p filter_costs))
+    filter_weights, png_const_fixed_point_p filter_costs));
 #endif /*  PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */

 /* Heuristic used for row filter selection.  These defines should NOT be
@@ -2060,9 +2050,9 @@ PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter,

 /* Returns pixel aspect ratio, computed from pHYs chunk data.  */
 PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio,
-    (png_const_structp png_ptr, png_const_infop info_ptr))
+    (png_const_structp png_ptr, png_const_infop info_ptr));
 PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed,
-    (png_const_structp png_ptr, png_const_infop info_ptr))
+    (png_const_structp png_ptr, png_const_infop info_ptr));

 /* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
 PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels,
@@ -2095,11 +2085,11 @@ PNG_EXPORT(132, void, png_set_bKGD, (png_structp png_ptr, png_infop info_ptr,
 PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structp png_ptr,
   png_const_infop info_ptr, double *white_x, double *white_y, double *red_x,
    double *red_y, double *green_x, double *green_y, double *blue_x,
-    double *blue_y))
+    double *blue_y));
 PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_structp png_ptr,
    png_const_infop info_ptr, double *red_X, double *red_Y, double *red_Z,
    double *green_X, double *green_Y, double *green_Z, double *blue_X,
-    double *blue_Y, double *blue_Z))
+    double *blue_Y, double *blue_Z));
 #ifdef PNG_FIXED_POINT_SUPPORTED /* Otherwise not implemented */
 PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
    (png_const_structp png_ptr,
@@ -2107,7 +2097,7 @@ PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
    png_fixed_point *int_white_y, png_fixed_point *int_red_x,
    png_fixed_point *int_red_y, png_fixed_point *int_green_x,
    png_fixed_point *int_green_y, png_fixed_point *int_blue_x,
-    png_fixed_point *int_blue_y))
+    png_fixed_point *int_blue_y));
 #endif
 PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
    (png_structp png_ptr, png_const_infop info_ptr,
@@ -2115,46 +2105,46 @@ PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
    png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
    png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
    png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
-    png_fixed_point *int_blue_Z))
+    png_fixed_point *int_blue_Z));
 #endif

 #ifdef PNG_cHRM_SUPPORTED
 PNG_FP_EXPORT(135, void, png_set_cHRM,
    (png_structp png_ptr, png_infop info_ptr,
    double white_x, double white_y, double red_x, double red_y, double green_x,
-    double green_y, double blue_x, double blue_y))
+    double green_y, double blue_x, double blue_y));
 PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_structp png_ptr,
    png_infop info_ptr, double red_X, double red_Y, double red_Z,
    double green_X, double green_Y, double green_Z, double blue_X,
-    double blue_Y, double blue_Z))
+    double blue_Y, double blue_Z));
 PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_structp png_ptr,
    png_infop info_ptr, png_fixed_point int_white_x,
    png_fixed_point int_white_y, png_fixed_point int_red_x,
    png_fixed_point int_red_y, png_fixed_point int_green_x,
    png_fixed_point int_green_y, png_fixed_point int_blue_x,
-    png_fixed_point int_blue_y))
+    png_fixed_point int_blue_y));
 PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_structp png_ptr,
    png_infop info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
    png_fixed_point int_red_Z, png_fixed_point int_green_X,
    png_fixed_point int_green_Y, png_fixed_point int_green_Z,
    png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
-    png_fixed_point int_blue_Z))
+    png_fixed_point int_blue_Z));
 #endif

 #ifdef PNG_gAMA_SUPPORTED
 PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA,
    (png_const_structp png_ptr, png_const_infop info_ptr,
-    double *file_gamma))
+    double *file_gamma));
 PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed,
    (png_const_structp png_ptr, png_const_infop info_ptr,
-    png_fixed_point *int_file_gamma))
+    png_fixed_point *int_file_gamma));
 #endif

 #ifdef PNG_gAMA_SUPPORTED
 PNG_FP_EXPORT(139, void, png_set_gAMA, (png_structp png_ptr,
-    png_infop info_ptr, double file_gamma))
+    png_infop info_ptr, double file_gamma));
 PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_structp png_ptr,
-    png_infop info_ptr, png_fixed_point int_file_gamma))
+    png_infop info_ptr, png_fixed_point int_file_gamma));
 #endif

 #ifdef PNG_hIST_SUPPORTED
@@ -2320,7 +2310,7 @@ PNG_EXPORT(167, void, png_set_tRNS,
 #ifdef PNG_sCAL_SUPPORTED
 PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL,
    (png_const_structp png_ptr, png_const_infop info_ptr,
-    int *unit, double *width, double *height))
+    int *unit, double *width, double *height));
 #ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
 /* NOTE: this API is currently implemented using floating point arithmetic,
 * consequently it can only be used on systems with floating point support.
@@ -2330,7 +2320,7 @@ PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL,
 PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed,
    (png_structp png_ptr, png_const_infop info_ptr, int *unit,
    png_fixed_point *width,
-    png_fixed_point *height))
+    png_fixed_point *height));
 #endif
 PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
    (png_const_structp png_ptr, png_const_infop info_ptr,
@@ -2338,10 +2328,10 @@ PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,

 PNG_FP_EXPORT(170, void, png_set_sCAL,
    (png_structp png_ptr, png_infop info_ptr,
-    int unit, double width, double height))
+    int unit, double width, double height));
 PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_structp png_ptr,
   png_infop info_ptr, int unit, png_fixed_point width,
-   png_fixed_point height))
+   png_fixed_point height));
 PNG_EXPORT(171, void, png_set_sCAL_s,
    (png_structp png_ptr, png_infop info_ptr,
    int unit, png_const_charp swidth, png_const_charp sheight));
@@ -2454,17 +2444,17 @@ PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch,
    (png_const_structp png_ptr, png_const_infop info_ptr));

 PNG_FP_EXPORT(196, float, png_get_x_offset_inches,
-    (png_const_structp png_ptr, png_const_infop info_ptr))
+    (png_const_structp png_ptr, png_const_infop info_ptr));
 #ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
 PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed,
-    (png_structp png_ptr, png_const_infop info_ptr))
+    (png_structp png_ptr, png_const_infop info_ptr));
 #endif

 PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structp png_ptr,
-    png_const_infop info_ptr))
+    png_const_infop info_ptr));
 #ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
 PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed,
-    (png_structp png_ptr, png_const_infop info_ptr))
+    (png_structp png_ptr, png_const_infop info_ptr));
 #endif

 #  ifdef PNG_pHYs_SUPPORTED
@@ -2655,8 +2645,6 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
 PNG_EXPORT(234, void, png_set_check_for_invalid_index, (png_structp png_ptr,
    int allowed));
-PNG_EXPORT(235, void, png_get_palette_max, (png_structp png_ptr,
-    png_const_infop info_ptr));
 #endif

 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project
@@ -2668,7 +2656,7 @@ PNG_EXPORT(235, void, png_get_palette_max, (png_structp png_ptr,
 * scripts/symbols.def as well.
 */
 #ifdef PNG_EXPORT_LAST_ORDINAL
-  PNG_EXPORT_LAST_ORDINAL(235);
+  PNG_EXPORT_LAST_ORDINAL(234);
 #endif

 #ifdef __cplusplus
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,9 +1,9 @@

 /* pngconf.h - machine configurable file for libpng
 *
- * libpng version 1.5.15beta01 - February 5, 2013
+ * libpng version 1.5.11rc05 - June 7, 2012
 *
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -177,16 +177,18 @@
 * ==========================
 * This code is used at build time to find PNG_IMPEXP, the API settings
 * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
- * import processing is possible.  On Windows systems it also sets
+ * import processing is possible.  On Windows/x86 systems it also sets
 * compiler-specific macros to the values required to change the calling
 * conventions of the various functions.
 */
-#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
-    defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
-  /* Windows system (DOS doesn't support DLLs).  Includes builds under Cygwin or
-   * MinGW on any architecture currently supported by Windows.  Also includes
-   * Watcom builds but these need special treatment because they are not
-   * compatible with GCC or Visual C because of different calling conventions.
+#if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+      defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\
+    ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
+      defined(_M_X64) || defined(_M_IA64) )
+  /* Windows system (DOS doesn't support DLLs) running on x86/x64.  Includes
+   * builds under Cygwin or MinGW.  Also includes Watcom builds but these need
+   * special treatment because they are not compatible with GCC or Visual C
+   * because of different calling conventions.
   */
 #  if PNG_API_RULE == 2
    /* If this line results in an error, either because __watcall is not
@@ -200,9 +202,6 @@
 #  if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
 #    define PNGCAPI __cdecl
 #    if PNG_API_RULE == 1
-       /* If this line results in an error __stdcall is not understood and
-        * PNG_API_RULE should not have been set to '1'.
-        */
 #      define PNGAPI __stdcall
 #    endif
 #  else
@@ -240,7 +239,7 @@
 #    endif
 #  endif /* compiler */

-#else /* !Windows */
+#else /* !Windows/x86 */
 #  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
 #    define PNGAPI _System
 #  else /* !Windows/x86 && !OS/2 */
@@ -345,23 +344,21 @@
 #    ifndef PNG_NORETURN
 #      define PNG_NORETURN   __attribute__((__noreturn__))
 #    endif
-#    if __GNUC__ >= 3
-#      ifndef PNG_ALLOCATED
-#        define PNG_ALLOCATED  __attribute__((__malloc__))
+#    ifndef PNG_ALLOCATED
+#      define PNG_ALLOCATED  __attribute__((__malloc__))
+#    endif
+#    ifndef PNG_DEPRECATED
+#      define PNG_DEPRECATED __attribute__((__deprecated__))
+#    endif
+#    ifndef PNG_PRIVATE
+#      if 0 /* Doesn't work so we use deprecated instead*/
+#        define PNG_PRIVATE \
+          __attribute__((warning("This function is not exported by libpng.")))
+#      else
+#        define PNG_PRIVATE \
+          __attribute__((__deprecated__))
 #      endif
-#      ifndef PNG_DEPRECATED
-#        define PNG_DEPRECATED __attribute__((__deprecated__))
-#      endif
-#      ifndef PNG_PRIVATE
-#        if 0 /* Doesn't work so we use deprecated instead*/
-#          define PNG_PRIVATE \
-            __attribute__((warning("This function is not exported by libpng.")))
-#        else
-#          define PNG_PRIVATE \
-            __attribute__((__deprecated__))
-#        endif
-#      endif
-#    endif /*  __GNUC__ >= 3 */
+#    endif
 #  endif /* __GNUC__ */

 #  if defined(_MSC_VER)  && (_MSC_VER >= 1300)
@@ -403,7 +400,7 @@
 #ifndef PNG_FP_EXPORT     /* A floating point API. */
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 #     define PNG_FP_EXPORT(ordinal, type, name, args)\
-         PNG_EXPORT(ordinal, type, name, args);
+         PNG_EXPORT(ordinal, type, name, args)
 #  else                   /* No floating point APIs */
 #     define PNG_FP_EXPORT(ordinal, type, name, args)
 #  endif
@@ -411,7 +408,7 @@
 #ifndef PNG_FIXED_EXPORT  /* A fixed point API. */
 #  ifdef PNG_FIXED_POINT_SUPPORTED
 #     define PNG_FIXED_EXPORT(ordinal, type, name, args)\
-         PNG_EXPORT(ordinal, type, name, args);
+         PNG_EXPORT(ordinal, type, name, args)
 #  else                   /* No fixed point APIs */
 #     define PNG_FIXED_EXPORT(ordinal, type, name, args)
 #  endif
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,8 +1,8 @@

 /* pngerror.c - stub functions for i/o and memory allocation
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.8 [February 1, 2011]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -161,7 +161,7 @@ png_format_number(png_const_charp start, png_charp end, int format,
         case PNG_NUMBER_FORMAT_02u:
            /* Expects at least 2 digits. */
            mincount = 2;
-            /* FALL THROUGH */
+            /* fall through */

         case PNG_NUMBER_FORMAT_u:
            *--end = digits[number % 10];
@@ -171,7 +171,7 @@ png_format_number(png_const_charp start, png_charp end, int format,
         case PNG_NUMBER_FORMAT_02x:
            /* This format expects at least two digits */
            mincount = 2;
-            /* FALL THROUGH */
+            /* fall through */

         case PNG_NUMBER_FORMAT_x:
            *--end = digits[number & 0xf];
--- a/pngget.c
+++ b/pngget.c
@@ -1,8 +1,8 @@

 /* pngget.c - retrieval of values from info struct
 *
- * Last changed in libpng 1.5.15 [(PENDING RELEASE)]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.7 [December 15, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -175,9 +175,6 @@ png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
         return ((float)((float)info_ptr->y_pixels_per_unit
             /(float)info_ptr->x_pixels_per_unit));
   }
-#else
-   PNG_UNUSED(png_ptr)
-   PNG_UNUSED(info_ptr)
 #endif

   return ((float)0.0);
@@ -206,9 +203,6 @@ png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
          (png_int_32)info_ptr->x_pixels_per_unit))
         return res;
   }
-#else
-   PNG_UNUSED(png_ptr)
-   PNG_UNUSED(info_ptr)
 #endif

   return 0;
@@ -1127,16 +1121,4 @@ png_get_io_chunk_name (png_structp png_ptr)
 }
 #endif /* ?PNG_IO_STATE_SUPPORTED */

-#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
-int PNGAPI
-png_get_max_palette_index(png_const_structp png_ptr, png_const_infop info_ptr)
-{
-   if (png_ptr != NULL && info_ptr != NULL)
-      return png_ptr->num_palette_max;
-
-   return (-1);
-}
-#endif
-
-
 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
--- a/pnginfo.h
+++ b/pnginfo.h
@@ -242,7 +242,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
 #ifdef PNG_sPLT_SUPPORTED
   /* Data on sPLT chunks (there may be more than one). */
   png_sPLT_tp splt_palettes;
-   int splt_palettes_num;
+   png_uint_32 splt_palettes_num;
 #endif

 #ifdef PNG_sCAL_SUPPORTED
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,8 +1,8 @@

 /* pngmem.c - stub functions for memory allocation
 *
- * Last changed in libpng 1.5.13 [September 27, 2012]
- * Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.7 [December 15, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -56,7 +56,7 @@ png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
   if (malloc_fn != NULL)
   {
      png_struct dummy_struct;
-      png_memset(&dummy_struct, 0, sizeof dummy_struct);
+      memset(&dummy_struct, 0, sizeof dummy_struct);
      dummy_struct.mem_ptr=mem_ptr;
      struct_ptr = (*(malloc_fn))(&dummy_struct, (png_alloc_size_t)size);
   }
@@ -90,7 +90,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
      if (free_fn != NULL)
      {
         png_struct dummy_struct;
-         png_memset(&dummy_struct, 0, sizeof dummy_struct);
+         memset(&dummy_struct, 0, sizeof dummy_struct);
         dummy_struct.mem_ptr=mem_ptr;
         (*(free_fn))(&dummy_struct, struct_ptr);
         return;
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@

 /* pngpread.c - read a png file in push mode
 *
- * Last changed in libpng 1.5.11 [June 14, 2012]
+ * Last changed in libpng 1.5.11 [(PENDING RELEASE)]
 * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -6,7 +6,7 @@
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
- * Last changed in libpng 1.5.10 [March 29, 2012]
+ * Last changed in libpng 1.5.10 [(PENDING RELEASE)]
 *
 * This code is released under the libpng license.
 * For conditions of distribution and use, see the disclaimer
@@ -39,7 +39,6 @@
 */
 #define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */

-#ifndef PNG_VERSION_INFO_ONLY
 /* This is required for the definition of abort(), used as a last ditch
 * error handler when all else fails.
 */
@@ -47,7 +46,6 @@

 /* This is used to find 'offsetof', used below for alignment tests. */
 #include <stddef.h>
-#endif /* !PNG_VERSION_INFO_ONLY */

 #define PNGLIB_BUILD /*libpng is being built, not used*/

@@ -127,6 +125,8 @@
 #endif

 #include "png.h"
+#include "pnginfo.h"
+#include "pngstruct.h"

 /* pngconf.h does not set PNG_DLL_EXPORT unless it is required, so: */
 #ifndef PNG_DLL_EXPORT
@@ -173,6 +173,14 @@
 #  endif
 #endif

+/* This is used for 16 bit gamma tables - only the top level pointers are const,
+ * this could be changed:
+ */
+typedef PNG_CONST png_uint_16p FAR * png_const_uint_16pp;
+
+/* Added at libpng-1.2.9 */
+/* Moved to pngpriv.h at libpng-1.5.0 */
+
 /* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
 * script.  We may need it here to get the correct configuration on things
 * like limits.
@@ -300,7 +308,6 @@
 #  define PNGFAPI /* PRIVATE */
 #endif

-#ifndef PNG_VERSION_INFO_ONLY
 /* Other defines specific to compilers can go here.  Try to keep
 * them inside an appropriate ifdef/endif pair for portability.
 */
@@ -345,7 +352,6 @@
    defined(_WIN32) || defined(__WIN32__)
 #  include <windows.h>  /* defines _WINDOWS_ macro */
 #endif
-#endif /* !PNG_VERSION_INFO_ONLY */

 /* Moved here around 1.5.0beta36 from pngconf.h */
 /* Users may want to use these so they are not private.  Any library
@@ -410,7 +416,7 @@
 #if PNG_ALIGN_TYPE == PNG_ALIGN_SIZE
   /* This is used because in some compiler implementations non-aligned
    * structure members are supported, so the offsetof approach below fails.
-    * Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access
+    * Set PNG_ALIGN_TO_SIZE=0 for compiler combinations where unaligned access
    * is good for performance.  Do not do this unless you have tested the result
    * and understand it.
    */
@@ -611,10 +617,8 @@
 #define png_fixed(png_ptr, fp, s) ((fp) <= 21474 && (fp) >= -21474 ?\
    ((png_fixed_point)(100000 * (fp))) : (png_fixed_error(png_ptr, s),0))
 #else
-#ifndef PNG_VERSION_INFO_ONLY
 PNG_EXTERN png_fixed_point png_fixed PNGARG((png_structp png_ptr, double fp,
   png_const_charp text));
-#endif /* !PNG_VERSION_INFO_ONLY */
 #endif
 #endif

@@ -688,18 +692,6 @@ PNG_EXTERN png_fixed_point png_fixed PNGARG((png_structp png_ptr, double fp,
 #define PNG_GAMMA_MAC_INVERSE 65909
 #define PNG_GAMMA_sRGB_INVERSE 45455

-/* Almost everything below is C specific; the #defines above can be used in
- * non-C code (so long as it is C-preprocessed) the rest of this stuff cannot.
- */
-#ifndef PNG_VERSION_INFO_ONLY
-
-#include "pngstruct.h"
-#include "pnginfo.h"
-
-/* This is used for 16 bit gamma tables -- only the top level pointers are
- * const; this could be changed:
- */
-typedef const png_uint_16p * png_const_uint_16pp;

 /* Inhibit C++ name-mangling for libpng functions but not for system calls. */
 #ifdef __cplusplus
@@ -831,8 +823,10 @@ PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
 #  endif
+#  ifdef PNG_FIXED_POINT_SUPPORTED
 PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr,
    png_fixed_point file_gamma));
+#  endif
 #endif

 #ifdef PNG_WRITE_sBIT_SUPPORTED
@@ -999,8 +993,8 @@ PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
 /* Unfilter a row: check the filter value before calling this, there is no point
 * calling it for PNG_FILTER_VALUE_NONE.
 */
-PNG_EXTERN void png_read_filter_row PNGARG((png_structp pp, png_row_infop
-    row_info, png_bytep row, png_const_bytep prev_row, int filter));
+PNG_EXTERN void png_read_filter_row PNGARG((png_structp pp, png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row, int filter));

 PNG_EXTERN void png_read_filter_row_up_neon PNGARG((png_row_infop row_info,
    png_bytep row, png_const_bytep prev_row));
@@ -1497,16 +1491,14 @@ PNG_EXTERN void png_formatted_warning(png_structp png_ptr,
 /* ASCII to FP interfaces, currently only implemented if sCAL
 * support is required.
 */
-#ifdef PNG_sCAL_SUPPORTED
+#if defined(PNG_READ_sCAL_SUPPORTED)
 /* MAX_DIGITS is actually the maximum number of characters in an sCAL
 * width or height, derived from the precision (number of significant
 * digits - a build time settable option) and assumpitions about the
 * maximum ridiculous exponent.
 */
 #define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/)
-#endif

-#ifdef PNG_sCAL_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 PNG_EXTERN void png_ascii_from_fp PNGARG((png_structp png_ptr, png_charp ascii,
    png_size_t size, double fp, unsigned int precision));
@@ -1590,15 +1582,15 @@ PNG_EXTERN void png_ascii_from_fixed PNGARG((png_structp png_ptr,
 #define PNG_FP_IS_ZERO(state) (((state) & PNG_FP_Z_MASK) == PNG_FP_SAW_DIGIT)
 #define PNG_FP_IS_POSITIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_Z_MASK)
 #define PNG_FP_IS_NEGATIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_NZ_MASK)
-
-/* The actual parser.  This can be called repeatedly. It updates
+ 
+/* The actual parser.  This can be called repeatedly, it updates
 * the index into the string and the state variable (which must
- * be initialized to 0).  It returns a result code, as above.  There
+ * be initialzed to 0).  It returns a result code, as above.  There
 * is no point calling the parser any more if it fails to advance to
 * the end of the string - it is stuck on an invalid character (or
 * terminated by '\0').
 *
- * Note that the pointer will consume an E or even an E+ and then leave
+ * Note that the pointer will consume an E or even an E+ then leave
 * a 'maybe' state even though a preceding integer.fraction is valid.
 * The PNG_FP_WAS_VALID flag indicates that a preceding substring was
 * a valid number.  It's possible to recover from this by calling
@@ -1637,7 +1629,7 @@ PNG_EXTERN png_fixed_point png_muldiv_warn PNGARG((png_structp png_ptr,
    png_fixed_point a, png_int_32 multiplied_by, png_int_32 divided_by));
 #endif

-#if (defined PNG_READ_GAMMA_SUPPORTED) || (defined PNG_cHRM_SUPPORTED)
+#ifdef PNG_READ_GAMMA_SUPPORTED
 /* Calculate a reciprocal - used for gamma values.  This returns
 * 0 if the argument is 0 in order to maintain an undefined value,
 * there are no warnings.
@@ -1672,72 +1664,7 @@ PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
    int bit_depth));
 #endif

-/* Missing declarations if FIXED_POINT is *not* supported - fixed properly
- * in libpng 1.6
- */
-#ifndef PNG_FIXED_POINT_SUPPORTED
-#ifdef PNG_cHRM_SUPPORTED
-PNG_EXTERN png_uint_32 png_get_cHRM_XYZ_fixed PNGARG(
-    (png_structp png_ptr, png_const_infop info_ptr,
-    png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
-    png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
-    png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
-    png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
-    png_fixed_point *int_blue_Z));
-PNG_EXTERN void png_set_cHRM_XYZ_fixed PNGARG((png_structp png_ptr,
-    png_infop info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
-    png_fixed_point int_red_Z, png_fixed_point int_green_X,
-    png_fixed_point int_green_Y, png_fixed_point int_green_Z,
-    png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
-    png_fixed_point int_blue_Z));
-PNG_EXTERN void png_set_cHRM_fixed PNGARG((png_structp png_ptr,
-    png_infop info_ptr, png_fixed_point int_white_x,
-    png_fixed_point int_white_y, png_fixed_point int_red_x,
-    png_fixed_point int_red_y, png_fixed_point int_green_x,
-    png_fixed_point int_green_y, png_fixed_point int_blue_x,
-    png_fixed_point int_blue_y));
-#endif
-
-#ifdef PNG_gAMA_SUPPORTED
-PNG_EXTERN png_uint_32 png_get_gAMA_fixed PNGARG(
-    (png_const_structp png_ptr, png_const_infop info_ptr,
-    png_fixed_point *int_file_gamma));
-PNG_EXTERN void png_set_gAMA_fixed PNGARG((png_structp png_ptr,
-    png_infop info_ptr, png_fixed_point int_file_gamma));
-#endif
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-PNG_EXTERN void png_set_background_fixed PNGARG((png_structp png_ptr,
-    png_const_color_16p background_color, int background_gamma_code,
-    int need_expand, png_fixed_point background_gamma));
-#endif
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
-PNG_EXTERN void png_set_alpha_mode_fixed PNGARG((png_structp png_ptr,
-    int mode, png_fixed_point output_gamma));
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-PNG_EXTERN void png_set_gamma_fixed PNGARG((png_structp png_ptr,
-    png_fixed_point screen_gamma, png_fixed_point override_file_gamma));
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-PNG_EXTERN void png_set_rgb_to_gray_fixed PNGARG((png_structp png_ptr,
-    int error_action, png_fixed_point red, png_fixed_point green));
-#endif
-#endif /* FIX MISSING !FIXED_POINT DECLARATIONS */
-
-#ifdef PNG_FILTER_OPTIMIZATIONS
-PNG_EXTERN void PNG_FILTER_OPTIMIZATIONS(png_structp png_ptr, unsigned int bpp);
-   /* This is the initialization function for hardware specific optimizations,
-    * one implementation (for ARM NEON machines) is contained in
-    * arm/filter_neon.c.  It need not be defined - the generic code will be used
-    * if not.
-    */
-#endif
-
-/* Maintainer: Put new private prototypes here ^ */
+/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */

 #include "pngdebug.h"

@@ -1745,5 +1672,4 @@ PNG_EXTERN void PNG_FILTER_OPTIMIZATIONS(png_structp png_ptr, unsigned int bpp);
 }
 #endif

-#endif /* PNG_VERSION_INFO_ONLY */
 #endif /* PNGPRIV_H */
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@

 /* pngread.c - read a PNG file
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
+ * Last changed in libpng 1.5.10 [March 8, 2012]
 * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,8 +1,8 @@

 /* pngrtran.c - transforms the data in a row for PNG readers
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.11 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -1221,7 +1221,7 @@ png_init_rgb_transformations(png_structp png_ptr)
            default:

            case 8:
-               /* FALL THROUGH (already 8 bits) */
+               /* Already 8 bits, fall through */

            case 16:
               /* Already a full 16 bits */
@@ -1770,8 +1770,8 @@ png_init_read_transformations(png_structp png_ptr)
         int num_palette = png_ptr->num_palette;
         int i;

-         /* NOTE: there are other transformations that should probably be in
-          * here too.
+         /*NOTE: there are other transformations that should probably be in here
+          * too.
          */
         for (i = 0; i < num_palette; i++)
         {
@@ -2277,7 +2277,7 @@ png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)
 #endif

 #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-   /* NOTE: moved here in 1.5.4 (from much later in this list.) */
+   /*NOTE: moved here in 1.5.4 (from much later in this list.) */
   if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
       (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
      png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
@@ -3303,7 +3303,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
               if (red != green || red != blue)
               {
                  rgb_error |= 1;
-                  /* NOTE: this is the historical approach which simply
+                  /*NOTE: this is the historical approach which simply
                   * truncates the results.
                   */
                  *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
@@ -3705,10 +3705,8 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        if (v == png_ptr->trans_color.gray)
                        {
                           /* Background is already in screen gamma */
-                           *sp = (png_byte)((png_ptr->background.gray >> 8)
-                                & 0xff);
-                           *(sp + 1) = (png_byte)(png_ptr->background.gray
-                                & 0xff);
+                           *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+                           *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
                        }

                        else
@@ -3731,10 +3729,8 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)

                        if (v == png_ptr->trans_color.gray)
                        {
-                           *sp = (png_byte)((png_ptr->background.gray >> 8)
-                                & 0xff);
-                           *(sp + 1) = (png_byte)(png_ptr->background.gray
-                                & 0xff);
+                           *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+                           *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
                        }
                     }
                  }
@@ -3814,12 +3810,9 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        /* Background is already in screen gamma */
                        *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
-                                & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green
-                                & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
-                                & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
                        *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                     }

@@ -3860,12 +3853,9 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                     {
                        *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
-                                & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green
-                                & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
-                                & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
                        *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                     }
                  }
@@ -3920,7 +3910,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        *sp = (png_byte)png_ptr->background.gray;

                     else if (a < 0xff)
-                        png_composite(*sp, *sp, a, png_ptr->background.gray);
+                        png_composite(*sp, *sp, a, png_ptr->background_1.gray);
                  }
               }
            }
@@ -3948,8 +3938,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                     else if (a == 0)
                     {
                        /* Background is already in screen gamma */
-                        *sp = (png_byte)((png_ptr->background.gray >> 8)
-                                & 0xff);
+                        *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
                     }

@@ -3979,8 +3968,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)

                     if (a == 0)
                     {
-                        *sp = (png_byte)((png_ptr->background.gray >> 8)
-                                & 0xff);
+                        *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
                     }

@@ -3989,7 +3977,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        png_uint_16 g, v;

                        g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
-                        png_composite_16(v, g, a, png_ptr->background.gray);
+                        png_composite_16(v, g, a, png_ptr->background_1.gray);
                        *sp = (png_byte)((v >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(v & 0xff);
                     }
@@ -4110,12 +4098,9 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        /* Background is already in screen gamma */
                        *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
-                                & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green
-                                & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
-                                & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
                        *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                     }

@@ -4126,16 +4111,14 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
                        png_composite_16(w, v, a, png_ptr->background_1.red);
                        if (!optimize)
-                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)]
-                               [w >> 8];
+                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
                        *sp = (png_byte)((w >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(w & 0xff);

                        v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
                        png_composite_16(w, v, a, png_ptr->background_1.green);
                        if (!optimize)
-                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)]
-                               [w >> 8];
+                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];

                        *(sp + 2) = (png_byte)((w >> 8) & 0xff);
                        *(sp + 3) = (png_byte)(w & 0xff);
@@ -4143,8 +4126,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                        v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
                        png_composite_16(w, v, a, png_ptr->background_1.blue);
                        if (!optimize)
-                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)]
-                               [w >> 8];
+                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];

                        *(sp + 4) = (png_byte)((w >> 8) & 0xff);
                        *(sp + 5) = (png_byte)(w & 0xff);
@@ -4165,12 +4147,9 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                     {
                        *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
-                                & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green
-                                & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
-                                & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
                        *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                     }

@@ -4746,9 +4725,7 @@ png_do_expand(png_row_infop row_info, png_bytep row,
         {
            if (row_info->bit_depth == 8)
            {
-               /* NOTE: prior to libpng 1.5.14 this cleared out the top bits of
-                * 'gray', however if those are set it is an error.
-                */
+               gray = gray & 0xff;
               sp = row + (png_size_t)row_width - 1;
               dp = row + (png_size_t)(row_width << 1) - 1;

--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,8 +1,8 @@

 /* pngrutil.c - utilities to read a PNG file
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [March 8, 2012]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -2452,7 +2452,7 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   png_textp text_ptr;
   png_charp key, lang, text, lang_key;
   int comp_flag;
-   int comp_type;
+   int comp_type = 0;
   int ret;
   png_size_t slength, prefix_len, data_len;

@@ -2533,24 +2533,15 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      return;
   }

-   comp_flag = *lang++;
-   comp_type = *lang++;
-
-   /* 1.5.14: The spec says "for uncompressed text decoders shall ignore [the
-    * compression type]".  The compression flag shall be 0 (no compression) or
-    * 1 (compressed with method 0 - deflate.)
-    */
-   if (comp_flag != 0 && comp_flag != 1)
+   else
   {
-      png_warning(png_ptr, "invalid iTXt compression flag");
-      png_free(png_ptr, png_ptr->chunkdata);
-      png_ptr->chunkdata = NULL;
-      return;
+      comp_flag = *lang++;
+      comp_type = *lang++;
   }

-   if (comp_flag/*compressed*/ && comp_type != 0)
+   if (comp_type || (comp_flag && comp_flag != PNG_TEXT_COMPRESSION_zTXt))
   {
-      png_warning(png_ptr, "unknown iTXt compression type");
+      png_warning(png_ptr, "Unknown iTXt compression type or method");
      png_free(png_ptr, png_ptr->chunkdata);
      png_ptr->chunkdata = NULL;
      return;
@@ -2586,7 +2577,7 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   key=png_ptr->chunkdata;

-   if (comp_flag/*compressed*/)
+   if (comp_flag)
      png_decompress_chunk(png_ptr, comp_type,
          (size_t)length, prefix_len, &data_len);

@@ -2604,8 +2595,7 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      return;
   }

-   text_ptr->compression =
-      (comp_flag ? PNG_ITXT_COMPRESSION_zTXt : PNG_ITXT_COMPRESSION_NONE);
+   text_ptr->compression = (int)comp_flag + 1;
   text_ptr->lang_key = png_ptr->chunkdata + (lang_key - key);
   text_ptr->lang = png_ptr->chunkdata + (lang - key);
   text_ptr->itxt_length = data_len;
@@ -3670,6 +3660,66 @@ png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
   }
 }

+#ifdef PNG_ARM_NEON
+
+#ifdef __linux__
+#include <stdio.h>
+#include <elf.h>
+#include <asm/hwcap.h>
+
+static int png_have_hwcap(unsigned cap)
+{
+   FILE *f = fopen("/proc/self/auxv", "r");
+   Elf32_auxv_t aux;
+   int have_cap = 0;
+
+   if (!f)
+      return 0;
+
+   while (fread(&aux, sizeof(aux), 1, f) > 0)
+   {
+      if (aux.a_type == AT_HWCAP &&
+          aux.a_un.a_val & cap)
+      {
+         have_cap = 1;
+         break;
+      }
+   }
+
+   fclose(f);
+
+   return have_cap;
+}
+#endif /* __linux__ */
+
+static void
+png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
+{
+#ifdef __linux__
+   if (!png_have_hwcap(HWCAP_NEON))
+      return;
+#endif
+
+   pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_neon;
+
+   if (bpp == 3)
+   {
+      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_neon;
+      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_neon;
+      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = 
+         png_read_filter_row_paeth3_neon;
+   }
+
+   else if (bpp == 4)
+   {
+      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_neon;
+      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_neon;
+      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+          png_read_filter_row_paeth4_neon;
+   }
+}
+#endif /* PNG_ARM_NEON */
+
 static void
 png_init_filter_functions(png_structp pp)
 {
@@ -3685,16 +3735,8 @@ png_init_filter_functions(png_structp pp)
      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
         png_read_filter_row_paeth_multibyte_pixel;

-#ifdef PNG_FILTER_OPTIMIZATIONS
-   /* To use this define PNG_FILTER_OPTIMIZATIONS as the name of a function to
-    * call to install hardware optimizations for the above functions; simply
-    * replace whatever elements of the pp->read_filter[] array with a hardware
-    * specific (or, for that matter, generic) optimization.
-    *
-    * To see an example of this examine what configure.ac does when
-    * --enable-arm-neon is specified on the command line.
-    */
-   PNG_FILTER_OPTIMIZATIONS(pp, bpp);
+#ifdef PNG_ARM_NEON
+   png_init_filter_functions_neon(pp, bpp);
 #endif
 }

--- a/pngset.c
+++ b/pngset.c
@@ -1,8 +1,8 @@

 /* pngset.c - storage of image information into info struct
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.11 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -690,17 +690,6 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr,
   /* Make sure we have enough space in the "text" array in info_struct
    * to hold all of the incoming text_ptr objects.
    */
-
-   if (num_text < 0 ||
-       num_text > INT_MAX - info_ptr->num_text - 8 ||
-       (unsigned int)/*SAFE*/(num_text +/*SAFE*/
-       info_ptr->num_text + 8) >=
-       PNG_SIZE_MAX/png_sizeof(png_text))
-   {
-      png_warning(png_ptr, "too many text chunks");
-      return(0);
-   }
-
   if (info_ptr->num_text + num_text > info_ptr->max_text)
   {
      int old_max_text = info_ptr->max_text;
@@ -908,12 +897,6 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
   if (png_ptr == NULL || info_ptr == NULL)
      return;

-   if (num_trans < 0 || num_trans > PNG_MAX_PALETTE_LENGTH)
-      {
-        png_warning(png_ptr, "Ignoring invalid num_trans value");
-        return;
-      }
-
   if (trans_alpha != NULL)
   {
       /* It may not actually be necessary to set png_ptr->trans_alpha here;
@@ -980,18 +963,9 @@ png_set_sPLT(png_structp png_ptr,
   if (png_ptr == NULL || info_ptr == NULL)
      return;

-   if (nentries < 0 ||
-       nentries > INT_MAX-info_ptr->splt_palettes_num ||
-       (unsigned int)/*SAFE*/(nentries +/*SAFE*/
-       info_ptr->splt_palettes_num) >=
-       PNG_SIZE_MAX/png_sizeof(png_sPLT_t))
-      np=NULL;
-
-   else
-
-      np = (png_sPLT_tp)png_malloc_warn(png_ptr,
-          (info_ptr->splt_palettes_num + nentries) *
-          (png_size_t)png_sizeof(png_sPLT_t));
+   np = (png_sPLT_tp)png_malloc_warn(png_ptr,
+       (info_ptr->splt_palettes_num + nentries) *
+       (png_size_t)png_sizeof(png_sPLT_t));

   if (np == NULL)
   {
@@ -1059,17 +1033,9 @@ png_set_unknown_chunks(png_structp png_ptr,
   if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
      return;

-   if (num_unknowns < 0 ||
-       num_unknowns > INT_MAX-info_ptr->unknown_chunks_num ||
-       (unsigned int)/*SAFE*/(num_unknowns +/*SAFE*/
-       info_ptr->unknown_chunks_num) >=
-       PNG_SIZE_MAX/png_sizeof(png_unknown_chunk))
-      np=NULL;
-
-   else
-      np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
-          (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) *
-          png_sizeof(png_unknown_chunk));
+   np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
+       (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) *
+       png_sizeof(png_unknown_chunk));

   if (np == NULL)
   {
--- a/pngstruct.h
+++ b/pngstruct.h
@@ -1,11 +1,11 @@

 /* pngstruct.h - header file for PNG reference library
 *
- * Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
- * Last changed in libpng 1.5.9 [February 18, 2012]
+ * Last changed in libpng 1.5.9 [(PENDING RELEASE)]
 *
 * This code is released under the libpng license.
 * For conditions of distribution and use, see the disclaimer
@@ -248,7 +248,6 @@ struct png_struct_def
 #endif

 #ifdef PNG_TIME_RFC1123_SUPPORTED
-   /* This is going to be unused in libpng16 and removed from libpng17 */
   char time_buffer[29]; /* String to hold RFC 1123 time text */
 #endif

--- a/pngtest.c
+++ b/pngtest.c
--- a/pngtest.png
+++ b/pngtest.png
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@

 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
 *
- * Last changed in libpng 1.5.11 [June 14, 2012]
+ * Last changed in libpng 1.5.11 [(PENDING RELEASE)]
 * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,8 +1,8 @@

 /* pngwrite.c - general routines to write a PNG file
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.11 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -420,6 +420,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
 }

 #ifdef PNG_CONVERT_tIME_SUPPORTED
+/* "tm" structure is not supported on WindowsCE */
 void PNGAPI
 png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm FAR * ttime)
 {
@@ -1041,7 +1042,6 @@ png_set_filter(png_structp png_ptr, int method, int filters)
         case 5:
         case 6:
         case 7: png_warning(png_ptr, "Unknown row filter for method 0");
-             /* FALL THROUGH */
 #endif /* PNG_WRITE_FILTER_SUPPORTED */
         case PNG_FILTER_VALUE_NONE:
            png_ptr->do_filter = PNG_FILTER_NONE; break;
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,8 +1,8 @@

 /* pngwtran.c - transforms the data in a row for PNG writers
 *
- * Last changed in libpng 1.5.13 [September 27, 2012]
- * Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.6 [November 3, 2011]
+ * Copyright (c) 1998-2011 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -45,20 +45,8 @@ png_do_write_transformations(png_structp png_ptr, png_row_infop row_info)

 #ifdef PNG_WRITE_FILLER_SUPPORTED
   if (png_ptr->transformations & PNG_FILLER)
-   {
-      if (png_ptr->color_type & (PNG_COLOR_MASK_ALPHA|PNG_COLOR_MASK_PALETTE))
-      {
-         /* GA, RGBA or palette; in any of these cases libpng will not do the
-          * the correct thing (whatever that might be).
-          */
-         png_warning(png_ptr, "incorrect png_set_filler call ignored");
-         png_ptr->transformations &= ~PNG_FILLER;
-      }
-
-      else
-         png_do_strip_channel(row_info, png_ptr->row_buf + 1,
-            !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
-   }
+      png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+         !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
 #endif

 #ifdef PNG_WRITE_PACKSWAP_SUPPORTED
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,8 +1,8 @@

 /* pngwutil.c - utilities to write a PNG file
 *
- * Last changed in libpng 1.5.14 [January 24, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.10 [March 8, 2012]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
@@ -460,21 +460,24 @@ png_text_compress(png_structp png_ptr,
               old_ptr = comp->output_ptr;

               comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
-                   (comp->max_output_ptr * png_sizeof(png_bytep)));
+                   (png_alloc_size_t)
+                   (comp->max_output_ptr * png_sizeof(png_charpp)));

               png_memcpy(comp->output_ptr, old_ptr, old_max
-                   * png_sizeof(png_bytep));
+                   * png_sizeof(png_charp));

               png_free(png_ptr, old_ptr);
            }
            else
               comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
-                   (comp->max_output_ptr * png_sizeof(png_bytep)));
+                   (png_alloc_size_t)
+                   (comp->max_output_ptr * png_sizeof(png_charp)));
         }

         /* Save the data */
         comp->output_ptr[comp->num_output_ptr] =
-             (png_bytep)png_malloc(png_ptr, png_ptr->zbuf_size);
+             (png_bytep)png_malloc(png_ptr,
+             (png_alloc_size_t)png_ptr->zbuf_size);

         png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
             png_ptr->zbuf_size);
@@ -1367,8 +1370,7 @@ png_write_tRNS(png_structp png_ptr, png_const_bytep trans_alpha,
      }

      /* Write the chunk out as it is */
-      png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha,
-         (png_size_t)num_trans);
+      png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha, (png_size_t)num_trans);
   }

   else if (color_type == PNG_COLOR_TYPE_GRAY)
--- a/projects/vstudio/WARNING
+++ b/projects/vstudio/WARNING
@@ -1,23 +0,0 @@
-WARNING
-=======
-Libpng 1.5 erroneously uses /MD when building debug DLL versions of libpng.
-It should use /MDd - you can change this under properties\C/C++\Code
-Generation\Runtime Library if you need to use the debug runtime for debug
-builds.  This will be changed in libpng 1.6 but is currently retained for
-compatibility with older libpng 1.5 releases.
-
-The runtime library settings for each build are as follows:
-
-           Release        Debug
-DLL         /MD            /MD
-Library     /MT            /MTd
-
-The Visual Studio 2010 defaults for a Win32 DLL or Static Library project are
-as follows:
-
-                 Release     Debug
-DLL               /MD         /MDd
-Static Library    /MD         /MDd
-
-Notice that by default static library builds use the DLL runtime, not the
-static library runtime.
--- a/projects/vstudio/libpng/libpng.vcxproj
+++ b/projects/vstudio/libpng/libpng.vcxproj
@@ -23,8 +23,8 @@
    <Keyword>Win32Proj</Keyword>
    <RootNamespace>libpng</RootNamespace>
  </PropertyGroup>
-  <Import Project="$(SolutionDir)\zlib.props" />
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(SolutionDir)\zlib.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
    <ConfigurationType>DynamicLibrary</ConfigurationType>
    <CharacterSet>MultiByte</CharacterSet>
--- a/projects/vstudio/pnglibconf/pnglibconf.vcxproj
+++ b/projects/vstudio/pnglibconf/pnglibconf.vcxproj
@@ -17,7 +17,6 @@
    <WholeProgramOptimization>true</WholeProgramOptimization>
    <CharacterSet>MultiByte</CharacterSet>
  </PropertyGroup>
-  <Import Project="$(SolutionDir)\zlib.props" />
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
  <ImportGroup Label="ExtensionSettings">
  </ImportGroup>
--- a/projects/vstudio/pngtest/pngtest.vcxproj
+++ b/projects/vstudio/pngtest/pngtest.vcxproj
@@ -23,8 +23,8 @@
    <Keyword>Win32Proj</Keyword>
    <RootNamespace>pngtest</RootNamespace>
  </PropertyGroup>
-  <Import Project="$(SolutionDir)\zlib.props" />
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(SolutionDir)\zlib.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <CharacterSet>Unicode</CharacterSet>
--- a/projects/vstudio/pngvalid/pngvalid.vcxproj
+++ b/projects/vstudio/pngvalid/pngvalid.vcxproj
@@ -23,8 +23,8 @@
    <Keyword>Win32Proj</Keyword>
    <RootNamespace>pngvalid</RootNamespace>
  </PropertyGroup>
-  <Import Project="$(SolutionDir)\zlib.props" />
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(SolutionDir)\zlib.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <CharacterSet>Unicode</CharacterSet>
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@

 VisualStudio instructions

-libpng version 1.5.15beta01 - February 5, 2013
+libpng version 1.5.11rc05 - June 7, 2012

 Copyright (c) 1998-2010 Glenn Randers-Pehrson

@@ -13,14 +13,6 @@ This directory  contains support for building libpng under MicroSoft
 VisualStudio 2010.  It may also work under later versions of VisualStudio.
 You should be familiar with VisualStudio before using this directory.

-WARNING
-=======
-Libpng 1.5 erroneously uses /MD when building debug DLL versions of libpng.
-It should use /MDd - you can change this under properties\C/C++\Code
-Generation\Runtime Library if you need to use the debug runtime for debug
-builds.  This will be changed in libpng 1.6 but is currently retained for
-compatibility with older libpng 1.5 releases.
-
 Initial preparations
 ====================
 You must enter some information in zlib.props before attempting to build
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
 * zlib.props - location of zlib source
 *
- * libpng version 1.5.15beta01 - February 5, 2013
+ * libpng version 1.5.11rc05 - June 7, 2012
 *
 * Copyright (c) 1998-2011 Glenn Randers-Pehrson
 *
@@ -33,13 +33,5 @@
 	 below:
     -->
    <ZLibSrcDir>..\..\..\..\zlib-1.2.5</ZLibSrcDir>
-
-    <!-- The following line allows compilation for an ARM target with Visual
-         Studio 2012.  Notice that this is not supported by the Visual Studio
-         2012 IDE and that the programs that result cannot be run unless they
-         signed by Microsoft.  This is therefore untested; only Microsoft can
-         test it:
-     -->
-    <WindowsSDKDesktopARMSupport>true</WindowsSDKDesktopARMSupport>
  </PropertyGroup>
 </Project>
--- a/projects/vstudio/zlib/zlib.vcxproj
+++ b/projects/vstudio/zlib/zlib.vcxproj
@@ -34,8 +34,8 @@
  <PropertyGroup Label="Globals">
    <Keyword>Win32Proj</Keyword>
  </PropertyGroup>
-  <Import Project="$(SolutionDir)\zlib.props" />
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(SolutionDir)\zlib.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
    <ConfigurationType>StaticLibrary</ConfigurationType>
  </PropertyGroup>
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,9 +1,9 @@

-Makefiles for  libpng version 1.5.15beta01 - February 5, 2013
+Makefiles for  libpng version 1.5.11rc05 - June 7, 2012

 pnglibconf.h.prebuilt       =>  Stores configuration settings
 makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng15.so.15.1.5.15beta01)
+                       (gcc, creates libpng15.so.15.1.5.11rc05)
 makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
 makefile.knr      =>  Archaic UNIX Makefile that converts files with
                       ansi2knr (Requires ansi2knr.c from
@@ -15,13 +15,12 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
 makefile.bc32     =>  32-bit Borland C++ (all modules compiled in C mode)
 makefile.beos     =>  beos makefile
 makefile.bor      =>  Borland makefile (uses bcc)
- makefile.cegcc    =>  minge32ce for Windows CE makefile (only included in the
-                       tar distributions, because it depends on "configure")
+ makefile.cegcc    =>  minge32ce for Windows CE makefile
 makefile.darwin   =>  Darwin makefile, can use on MacosX
 makefile.dec      =>  DEC Alpha UNIX makefile
 makefile.dj2      =>  DJGPP 2 makefile
 makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       (gcc, creates libpng15.so.15.1.5.15beta01)
+                       (gcc, creates libpng15.so.15.1.5.11rc05)
 makefile.freebsd  =>  FreeBSD makefile
 makefile.gcc      =>  Generic gcc makefile
 makefile.hpgcc    =>  HPUX makefile using gcc
@@ -36,12 +35,12 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
 makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
 makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
 makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng15.so.15.1.5.15beta01)
+                       creates libpng15.so.15.1.5.11rc05)
 makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
 makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng15.so.15.1.5.15beta01)
+                       creates libpng15.so.15.1.5.11rc05)
 makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng15.so.15.1.5.15beta01)
+                       creates libpng15.so.15.1.5.11rc05)
 makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
 makefile.sunos    =>  Sun makefile
 makefile.32sunu   =>  Sun Ultra 32-bit makefile
@@ -58,7 +57,7 @@ Other supporting scripts:
 libpng-config-body.in => used by several makefiles to create libpng-config
 libpng-config-head.in => used by several makefiles to create libpng-config
 libpng.pc.in      =>  Used by several makefiles to create libpng.pc
- pngwin.rc         =>  Used by the visualc71 and vstudio projects.
+ pngwin.rc         =>  Used by the visualc71 project.
 pngwin.def        =>  Used by makefile.os2
 pngwin.dfn        =>  Used to maintain pngwin.def
 SCOPTIONS.ppc     =>  Used with smakefile.ppc
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@

 # Modeled after libxml-config.

-version=1.5.15beta01
+version=1.5.11rc05
 prefix=""
 libdir=""
 libs=""
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng15

 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.5.15beta01
+Version: 1.5.11rc05
 Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}
--- a/scripts/makefile.cegcc
+++ b/scripts/makefile.cegcc
@@ -23,7 +23,7 @@

 VERMAJ = 1
 VERMIN = 5
-VERMIC = 15
+VERMIC = 11
 VER = $(VERMAJ).$(VERMIN).$(VERMIC)
 NAME = libpng
 PACKAGE = $(NAME)-$(VER)
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -10,7 +10,7 @@
 # Library name:
 LIBNAME = libpng15
 PNGMAJ = 15
-RELEASE = 15
+RELEASE = 11

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -236,4 +236,4 @@ pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pn
 pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h

-pngtest.o: png.h pngconf.h pnglibconf.h
+pngtest.o: png.h pngconf.h
--- a/scripts/makefile.msys
+++ b/scripts/makefile.msys
@@ -1,204 +0,0 @@
-# makefile for libpng using MSYS/gcc (shared, static library)
-# Copyright (C) 2012 Glenn Randers-Pehrson and Christopher M. Wheeler
-#
-# Portions taken from makefile.linux:
-# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs and
-# Glenn Randers-Pehrson
-# Copyright (C) 2000 Cosmin Truta
-# Copyright (C) 1996, 1997 Andreas Dilger
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-# # # # # # # # # # # # # # # # #
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Library name:
-LIBNAME = libpng15
-PNGMAJ = 15
-RELEASE = 15
-
-# Shared library names:
-LIBSO=$(LIBNAME).dll
-LIBSOMAJ=$(LIBNAME).dll.$(PNGMAJ)
-LIBSOREL=$(PNGMAJ).$(RELEASE)
-OLDSO=libpng.dll
-
-# Where the zlib library and include files are located.
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-
-# Compiler, linker, lib and other tools
-CC = gcc
-LD = $(CC)
-AR_RC = ar rcs
-RANLIB = ranlib
-RM_F = rm -rf
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-
-#ARCH = -march=pentium3
-#ARCH = -march=i686
-ARCH = 
-CDEBUG = -g -DPNG_DEBUG=5
-LDDEBUG =
-CRELEASE = -O2
-LDRELEASE = -s
-#CFLAGS = -W -Wall $(CDEBUG)
-CFLAGS = -W -Wall $(CRELEASE) $(ARCH)
-#LDFLAGS = $(LDDEBUG)
-LDFLAGS = $(LDRELEASE)
-LIBS = -lz -lm
-
-# File extensions
-O=.o
-A=.a
-EXE=.exe
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location.  Example:
-#
-#    make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-# Variables
-OBJS =  png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
-	pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
-	pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-
-# Targets
-all: static shared
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
-	cp scripts/pnglibconf.h.prebuilt $@
-
-.c$(O):
-	$(CC) -c $(CFLAGS) -I$(ZLIBINC) $<
-
-static: libpng$(A) pngtest$(EXE)
-
-shared: $(LIBSOMAJ)
-	$(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSO)
-
-$(LIBSO): $(LIBSOMAJ)
-	$(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ):
-	$(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSOMAJ)
-
-libpng$(A): $(OBJS)
-	$(AR_RC) $@ $(OBJS)
-	$(RANLIB) $@
-
-install-headers: png.h pngconf.h pnglibconf.h
-	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
-	cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
-	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-	-@$(RM_F) $(DI)/libpng
-	(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
-	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
-	cp libpng.a $(DL)/$(LIBNAME).a
-	-@$(RM_F) $(DL)/libpng.a
-	(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
-	-e s!@exec_prefix@!$(exec_prefix)! \
-	-e s!@libdir@!$(LIBPATH)! \
-	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
-
-libpng-config:
-	( cat scripts/libpng-config-head.in; \
-	echo prefix=\"$(prefix)\"; \
-	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng15 -lz -lm\"; \
-	cat scripts/libpng-config-body.in ) > libpng-config
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
-	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
-	-@$(RM_F) $(DL)/$(LIBSO)
-	-@$(RM_F) $(DL)/$(OLDSO)
-	cp $(LIBSO) $(DL)/$(LIBSOREL)
-	(cd $(DL); \
-	$(LN_SF) $(LIBSOREL) $(LIBSO); \
-	$(LN_SF) $(LIBSO) $(OLDSO))
-
-	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
-	-@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
-	-@$(RM_F) $(DL)/pkgconfig/libpng.pc
-	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
-	(cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
-	-@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
-	-@$(RM_F) $(DM)/man3/libpng.3
-	-@$(RM_F) $(DM)/man3/libpngpf.3
-	cp libpng.3 $(DM)/man3
-	cp libpngpf.3 $(DM)/man3
-	-@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
-	-@$(RM_F) $(DM)/man5/png.5
-	cp png.5 $(DM)/man5
-
-install-config: libpng-config
-	-@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
-	-@$(RM_F) $(DB)/libpng-config
-	-@$(RM_F) $(DB)/$(LIBNAME)-config
-	cp libpng-config $(DB)/$(LIBNAME)-config
-	(cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-test: pngtest$(EXE)
-	./pngtest$(EXE)
-
-pngtest$(EXE): pngtest$(O) libpng$(A)
-	$(LD) $(LDFLAGS) -L$(ZLIBLIB) -o $@ pngtest$(O) libpng$(A) $(LIBS)
-
-clean:
-	$(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png pnglibconf.h $(LIBSO) \
-	$(LIBSOMAJ) libpng-config
-
-png$(O):      png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread$(O):  png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest$(O):  png.h pngconf.h pnglibconf.h
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng15

 LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.15beta01
+SHLIB_MINOR=	1.5.11rc05
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include

 LIB=	png
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.15beta01
+SHLIB_MINOR=	1.5.11rc05
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat

 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.15beta01
+SHLIB_MINOR=	1.5.11rc05

 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
--- a/scripts/options.awk
+++ b/scripts/options.awk
@@ -102,7 +102,6 @@ pre && version == "search" && version_file != FILENAME{

 pre && version == "search" && $0 ~ /^ \* libpng version/{
   version = substr($0, 4)
-   gsub(/\./, " PNG_JOIN . PNG_JOIN", version)
   print "version =", version >out
   next
 }
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -21,7 +21,7 @@ file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H
 # C compiler to generate 'pnglibconf.h' - a list of all the
 # configuration options.  The file lists the various options
 # that can *only* be specified during the libpng build;
-# pnglibconf.h freezes the definitions selected for the specific
+# pnglibconf.h freezes the definitons selected for the specific
 # build.
 #
 # The syntax is detailed in scripts/options.awk, this is a summary
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,7 +3,7 @@

 /* pnglibconf.h - library build configuration */

-/* Libpng 1.5.15beta01 - February 5, 2013 */
+/* Libpng 1.5.11rc05 - June 7, 2012 */

 /* Copyright (c) 1998-2012 Glenn Randers-Pehrson */

--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -5,7 +5,7 @@
 LIBRARY

 EXPORTS
-;Version 1.5.15beta01
+;Version 1.5.11rc05
 png_access_version_number @1
 png_set_sig_bytes @2
 png_sig_cmp @3
@@ -240,4 +240,3 @@ EXPORTS
 png_set_cHRM_XYZ @232
 png_set_cHRM_XYZ_fixed @233
 png_set_check_for_invalid_index @234
- png_get_palette_max @235