Imported from libpng-1.2.27beta06.tar

ANNOUNCE

@@ -1,60 +1,79 @@
 
-Libpng 1.2.26 - April 2, 2008
+Libpng 1.2.27beta06 - April 21, 2008
 
-This is a public release of libpng, intended for use in production codes.
+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.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.26.tar.gz
-   libpng-1.2.26.tar.lzma
+   libpng-1.2.27beta06.tar.gz
+   libpng-1.2.27beta06.tar.lzma
      (Get the lzma codec from <http://tukaani.org/lzma>).
-   libpng-1.2.26.tar.bz2
+   libpng-1.2.27beta06.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.26-no-config.tar.gz
-   libpng-1.2.26-no-config.tar.lzma
-   libpng-1.2.26-no-config.tar.bz2
+   libpng-1.2.27beta06-no-config.tar.gz
+   libpng-1.2.27beta06-no-config.tar.lzma
+   libpng-1.2.27beta06-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lpng1226.zip
-   lpng1226.7z
-   lpng1226.tar.bz2
+   lp1227b06.zip
+   lp1227b06.7z
+   lp1227b06.tar.bz2
 
 Project files
 
-   libpng-1.2.26-project-netware.zip
-   libpng-1.2.26-project-wince.zip
+   libpng-1.2.27beta06-project-netware.zip
+   libpng-1.2.27beta06-project-wince.zip
 
 Other information:
 
-   libpng-1.2.26-README.txt
-   libpng-1.2.26-KNOWNBUGS.txt
-   libpng-1.2.26-LICENSE.txt
-   libpng-1.2.26-Y2K-compliance.txt
-   libpng-1.2.26-[previous version]-diff.txt
+   libpng-1.2.27beta06-README.txt
+   libpng-1.2.27beta06-KNOWNBUGS.txt
+   libpng-1.2.27beta06-LICENSE.txt
+   libpng-1.2.27beta06-Y2K-compliance.txt
+   libpng-1.2.27beta06-[previous version]-diff.txt
 
-Changes since the last public release (1.2.25):
+Changes since the last public release (1.2.26):
 
-version 1.2.26 [April 2, 2008]
+version 1.2.27beta01 [April 12, 2008]
+  Fixed bug (introduced in libpng-1.0.5h) with handling zero-length
+    unknown chunks.
+  Added more information about png_set_keep_unknown_chunks() to the
+    documetation.
+  Reject tRNS chunk with out-of-range samples instead of masking off
+    the invalid high bits as done in since libpng-1.2.19beta5.
 
-  Added missing "(" in pngmem.c.  Bug introduced in libpng-1.2.2/1.0.13
-  Refined error message returned from deflateInit2 in pngwutil.c
-  Check IHDR length in png_push_read_chunk() before saving it.
-  Revised contrib/gregbook to handle premature end-of-file and file
-    read errors correctly.
-  Free png_ptr->big_row_buf and png_ptr->prev_row before allocating
-    new copies in png_read_start_row().
-  Avoid reallocating big_row_buf and prev_row when the size does not increase.
-  Ifdef out some code that is unused when interlacing is not supported.
+version 1.2.27beta02 [April 13, 2008]
+  Revised documentation about unknown chunk and user chunk handling.
+  Keep tRNS chunk with out-of-range samples and issue a png_warning().
+
+version 1.2.27beta03 [April 14, 2008]
+  Added check for NULL ptr in TURBOC version of png_free_default().
+  Removed several unnecessary checks for NULL before calling png_free().
+  Revised png_set_tRNS() so that calling it twice removes and invalidates
+    the previous call.
+  Revised pngtest to check for out-of-range tRNS samples.
+
+version 1.2.27beta04 [April 18, 2008]
+  Added AC_LIBTOOL_WIN32_DLL to configure.ac
+  Rebuilt Makefile.in, aclocal.m4, and configure with autoconf-2.62
+
+version 1.2.27beta05 [April 19, 2008]
+  Added MAINTEINERCLEANFILES variable to Makefile.am
+
+version 1.2.27beta06 [April 21, 2008]
+  Avoid transforming color_type to RGB by png_set_expand_1_2_4_to_8().
 
 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

CHANGES

@@ -2097,9 +2097,42 @@ version 1.2.26beta05 [March 19, 2008]
 version 1.2.26beta06 [March 19, 2008]
   Avoid reallocating big_row_buf and prev_row when the size does not increase.
 
-version 1.2.26rc01 [April 2, 2008]
+version 1.2.26rc01 [March 26, 2008]
   Ifdef out some code that is unused when interlacing is not supported.
 
+versions 1.0.32 and 1.2.26 [April 2, 2008]
+  No changes.
+
+version 1.2.27beta01 [April 12, 2008]
+  Fixed bug (introduced in libpng-1.0.5h) with handling zero-length
+    unknown chunks.
+  Added more information about png_set_keep_unknown_chunks() to the
+    documetation.
+  Reject tRNS chunk with out-of-range samples instead of masking off
+    the invalid high bits as done in since libpng-1.2.19beta5.
+
+version 1.2.27beta02 [April 13, 2008]
+  Revised documentation about unknown chunk and user chunk handling.
+  Keep tRNS chunk with out-of-range samples and issue a png_warning().
+
+version 1.2.27beta03 [April 14, 2008]
+  Added check for NULL ptr in TURBOC version of png_free_default().
+  Removed several unnecessary checks for NULL before calling png_free().
+  Revised png_set_tRNS() so that calling it twice removes and invalidates
+    the previous call.
+  Revised pngtest to check for out-of-range tRNS samples.
+
+version 1.2.27beta04 [April 18, 2008]
+  Added AC_LIBTOOL_WIN32_DLL to configure.ac
+  Rebuilt Makefile.in, aclocal.m4, and configure with autoconf-2.62
+
+version 1.2.27beta05 [April 19, 2008]
+  Added MAINTEINERCLEANFILES variable to Makefile.am
+
+version 1.2.27beta06 [April 21, 2008]
+  Avoid transforming color_type to RGB by png_set_expand_1_2_4_to_8().
+
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.26 - April 2, 2008
+Installing libpng version 1.2.27beta06 - April 21, 2008
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -44,7 +44,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.26" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.27beta06" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -101,9 +101,9 @@ include
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.26)
+                       gcc, creates libpng12.so.0.1.2.27beta06)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.26)
+                       (gcc, creates libpng12.so.0.1.2.27beta06)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -125,14 +125,14 @@ include
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.26)
+                       creates libpng12.so.0.1.2.27beta06)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.26)
+                       creates libpng12.so.0.1.2.27beta06)
  makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.26)
+                       creates libpng12.so.0.1.2.27beta06)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.26)
+                       creates libpng12.so.0.1.2.27beta06)
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc

KNOWNBUG

@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.2.26
+Known bugs in libpng version 1.2.27beta06
 
 1. February 23, 2006: The custom makefiles don't build libpng with -lz.
 

LICENSE

@@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.26, April 2, 2008, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.27beta06, April 21, 2008, are
 Copyright (c) 2004, 2006-2008 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
@@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-April 2, 2008
+April 21, 2008

Makefile.am

@@ -86,11 +86,14 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng.txt pngvcrd.c 
+	example.c libpng-1.2.27beta06.txt pngvcrd.c 
 
 CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
 
+MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
+config.sub configure depcomp install-sh ltmain.sh missing
+
 $(PNGLIB_BASENAME).pc: libpng.pc
 	cp libpng.pc $@
 

Makefile.in

@@ -1,8 +1,8 @@
-# Makefile.in generated by automake 1.9.6 from Makefile.am.
+# Makefile.in generated by automake 1.10.1 from Makefile.am.
 # @configure_input@
 
 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004  Free Software Foundation, Inc.
+# 2003, 2004, 2005, 2006, 2007, 2008  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.
@@ -27,16 +27,10 @@
 
 
 
-SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) $(pngtest_SOURCES)
-
-srcdir = @srcdir@
-top_srcdir = @top_srcdir@
 VPATH = @srcdir@
 pkgdatadir = $(datadir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
-top_builddir = .
 am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
-INSTALL = @INSTALL@
 install_sh_DATA = $(install_sh) -c -m 644
 install_sh_PROGRAM = $(install_sh) -c
 install_sh_SCRIPT = $(install_sh) -c
@@ -48,24 +42,25 @@ POST_INSTALL = :
 NORMAL_UNINSTALL = :
 PRE_UNINSTALL = :
 POST_UNINSTALL = :
+build_triplet = @build@
 host_triplet = @host@
 check_PROGRAMS = pngtest$(EXEEXT)
 @HAVE_LD_VERSION_SCRIPT_TRUE@am__append_1 = -Wl,--version-script=libpng.vers
 @HAVE_LD_VERSION_SCRIPT_FALSE@am__append_2 = -export-symbols libpng.sym
+subdir = .
 DIST_COMMON = README $(am__configure_deps) $(dist_man_MANS) \
 	$(pkginclude_HEADERS) $(srcdir)/Makefile.am \
 	$(srcdir)/Makefile.in $(srcdir)/config.h.in \
 	$(top_srcdir)/configure $(top_srcdir)/scripts/libpng-config.in \
 	$(top_srcdir)/scripts/libpng.pc-configure.in INSTALL TODO \
-	compile config.guess config.sub depcomp install-sh ltmain.sh \
-	missing mkinstalldirs
-subdir = .
+	config.guess config.sub depcomp install-sh ltmain.sh missing \
+	mkinstalldirs
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
- configure.lineno configure.status.lineno
+ configure.lineno config.status.lineno
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
 CONFIG_HEADER = config.h
 CONFIG_CLEAN_FILES = libpng.pc libpng-config
@@ -90,6 +85,9 @@ am__objects_1 = libpng_la-png.lo libpng_la-pngset.lo \
 	libpng_la-pngerror.lo libpng_la-pngpread.lo
 am_libpng_la_OBJECTS = $(am__objects_1)
 libpng_la_OBJECTS = $(am_libpng_la_OBJECTS)
+libpng_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libpng_la_LDFLAGS) $(LDFLAGS) -o $@
 libpng12_la_LIBADD =
 am_libpng12_la_OBJECTS = libpng12_la-png.lo libpng12_la-pngset.lo \
 	libpng12_la-pngget.lo libpng12_la-pngrutil.lo \
@@ -100,22 +98,26 @@ am_libpng12_la_OBJECTS = libpng12_la-png.lo libpng12_la-pngset.lo \
 	libpng12_la-pngmem.lo libpng12_la-pngerror.lo \
 	libpng12_la-pngpread.lo
 libpng12_la_OBJECTS = $(am_libpng12_la_OBJECTS)
+libpng12_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libpng12_la_LDFLAGS) $(LDFLAGS) -o $@
 am_pngtest_OBJECTS = pngtest.$(OBJEXT)
 pngtest_OBJECTS = $(am_pngtest_OBJECTS)
 pngtest_DEPENDENCIES = libpng12.la
 binSCRIPT_INSTALL = $(INSTALL_SCRIPT)
 SCRIPTS = $(bin_SCRIPTS)
-DEFAULT_INCLUDES = -I. -I$(srcdir) -I.
+DEFAULT_INCLUDES = -I.@am__isrc@
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__depfiles_maybe = depfiles
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
-LTCOMPILE = $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) \
-	$(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
-	$(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 CCLD = $(CC)
-LINK = $(LIBTOOL) --mode=link --tag=CC $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
-	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+	$(LDFLAGS) -o $@
 SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) \
 	$(pngtest_SOURCES)
 DIST_SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) \
@@ -142,16 +144,12 @@ GZIP_ENV = --best
 distuninstallcheck_listfiles = find . -type f -print
 distcleancheck_listfiles = find . -type f -print
 
-# Avoid depending upon Character Ranges.
-AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
-
 #distribute headers in /usr/include/libpng/*
 pkgincludedir = $(includedir)/$(PNGLIB_BASENAME)
 ACLOCAL = @ACLOCAL@
-AMDEP_FALSE = @AMDEP_FALSE@
-AMDEP_TRUE = @AMDEP_TRUE@
 AMTAR = @AMTAR@
 AR = @AR@
+AS = @AS@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
 AUTOMAKE = @AUTOMAKE@
@@ -161,28 +159,25 @@ CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
-CXX = @CXX@
-CXXCPP = @CXXCPP@
-CXXDEPMODE = @CXXDEPMODE@
-CXXFLAGS = @CXXFLAGS@
 CYGPATH_W = @CYGPATH_W@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
-ECHO = @ECHO@
+DLLTOOL = @DLLTOOL@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
 EXEEXT = @EXEEXT@
-F77 = @F77@
-FFLAGS = @FFLAGS@
+FGREP = @FGREP@
 GREP = @GREP@
-HAVE_LD_VERSION_SCRIPT_FALSE = @HAVE_LD_VERSION_SCRIPT_FALSE@
-HAVE_LD_VERSION_SCRIPT_TRUE = @HAVE_LD_VERSION_SCRIPT_TRUE@
+INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
 LDFLAGS = @LDFLAGS@
 LIBOBJS = @LIBOBJS@
 LIBPNG_DEFINES = @LIBPNG_DEFINES@
@@ -192,9 +187,11 @@ LIBTOOL = @LIBTOOL@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
-MAINTAINER_MODE_FALSE = @MAINTAINER_MODE_FALSE@
-MAINTAINER_MODE_TRUE = @MAINTAINER_MODE_TRUE@
 MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
 OBJEXT = @OBJEXT@
 PACKAGE = @PACKAGE@
 PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
@@ -206,7 +203,6 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PNGLIB_MAJOR = @PNGLIB_MAJOR@
 PNGLIB_MINOR = @PNGLIB_MINOR@
 PNGLIB_RELEASE = @PNGLIB_RELEASE@
-SYMBOL_PREFIX = @SYMBOL_PREFIX@
 PNGLIB_VERSION = @PNGLIB_VERSION@
 POW_LIB = @POW_LIB@
 RANLIB = @RANLIB@
@@ -214,14 +210,14 @@ SED = @SED@
 SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
 STRIP = @STRIP@
+SYMBOL_PREFIX = @SYMBOL_PREFIX@
 VERSION = @VERSION@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
 ac_ct_CC = @ac_ct_CC@
-ac_ct_CXX = @ac_ct_CXX@
-ac_ct_F77 = @ac_ct_F77@
-am__fastdepCC_FALSE = @am__fastdepCC_FALSE@
-am__fastdepCC_TRUE = @am__fastdepCC_TRUE@
-am__fastdepCXX_FALSE = @am__fastdepCXX_FALSE@
-am__fastdepCXX_TRUE = @am__fastdepCXX_TRUE@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
 am__include = @am__include@
 am__leading_dot = @am__leading_dot@
 am__quote = @am__quote@
@@ -236,6 +232,7 @@ build_alias = @build_alias@
 build_cpu = @build_cpu@
 build_os = @build_os@
 build_vendor = @build_vendor@
+builddir = @builddir@
 compatlib = @compatlib@
 datadir = @datadir@
 datarootdir = @datarootdir@
@@ -255,6 +252,7 @@ libdir = @libdir@
 libexecdir = @libexecdir@
 localedir = @localedir@
 localstatedir = @localstatedir@
+lt_ECHO = @lt_ECHO@
 mandir = @mandir@
 mkdir_p = @mkdir_p@
 oldincludedir = @oldincludedir@
@@ -268,8 +266,12 @@ program_transform_name = @program_transform_name@
 psdir = @psdir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
 sysconfdir = @sysconfdir@
 target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
 PNGLIB_BASENAME = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
 
 # libpng does not follow GNU file name conventions
@@ -306,6 +308,9 @@ libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
 @HAVE_LD_VERSION_SCRIPT_FALSE@libpng12_la_DEPENDENCIES = libpng.sym
 @HAVE_LD_VERSION_SCRIPT_TRUE@libpng12_la_DEPENDENCIES = libpng.vers
 libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
+
+# Avoid depending upon Character Ranges.
+AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
 pkginclude_HEADERS = png.h pngconf.h
 pkgconfig_DATA = libpng12.pc
 
@@ -325,11 +330,14 @@ EXTRA_DIST = \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng.txt pngvcrd.c 
+	example.c libpng-1.2.27beta05.txt pngvcrd.c 
 
 CLEANFILES = pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
 
+MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
+config.sub configure depcomp install-sh ltmain.sh missing
+
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-am
 
@@ -372,7 +380,7 @@ $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 config.h: stamp-h1
 	@if test ! -f $@; then \
 	  rm -f stamp-h1; \
-	  $(MAKE) stamp-h1; \
+	  $(MAKE) $(AM_MAKEFLAGS) stamp-h1; \
 	else :; fi
 
 stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
@@ -391,21 +399,21 @@ libpng-config: $(top_builddir)/config.status $(top_srcdir)/scripts/libpng-config
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	@$(NORMAL_INSTALL)
-	test -z "$(libdir)" || $(mkdir_p) "$(DESTDIR)$(libdir)"
+	test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
 	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
 	  if test -f $$p; then \
 	    f=$(am__strip_dir) \
-	    echo " $(LIBTOOL) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) '$$p' '$(DESTDIR)$(libdir)/$$f'"; \
-	    $(LIBTOOL) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) "$$p" "$(DESTDIR)$(libdir)/$$f"; \
+	    echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) '$$p' '$(DESTDIR)$(libdir)/$$f'"; \
+	    $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) "$$p" "$(DESTDIR)$(libdir)/$$f"; \
 	  else :; fi; \
 	done
 
 uninstall-libLTLIBRARIES:
 	@$(NORMAL_UNINSTALL)
-	@set -x; list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
 	  p=$(am__strip_dir) \
-	  echo " $(LIBTOOL) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$p'"; \
-	  $(LIBTOOL) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$p"; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$p'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$p"; \
 	done
 
 clean-libLTLIBRARIES:
@@ -417,9 +425,9 @@ clean-libLTLIBRARIES:
 	  rm -f "$${dir}/so_locations"; \
 	done
 libpng.la: $(libpng_la_OBJECTS) $(libpng_la_DEPENDENCIES) 
-	$(LINK)  $(libpng_la_LDFLAGS) $(libpng_la_OBJECTS) $(libpng_la_LIBADD) $(LIBS)
+	$(libpng_la_LINK)  $(libpng_la_OBJECTS) $(libpng_la_LIBADD) $(LIBS)
 libpng12.la: $(libpng12_la_OBJECTS) $(libpng12_la_DEPENDENCIES) 
-	$(LINK) -rpath $(libdir) $(libpng12_la_LDFLAGS) $(libpng12_la_OBJECTS) $(libpng12_la_LIBADD) $(LIBS)
+	$(libpng12_la_LINK) -rpath $(libdir) $(libpng12_la_OBJECTS) $(libpng12_la_LIBADD) $(LIBS)
 
 clean-checkPROGRAMS:
 	@list='$(check_PROGRAMS)'; for p in $$list; do \
@@ -429,10 +437,10 @@ clean-checkPROGRAMS:
 	done
 pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES) 
 	@rm -f pngtest$(EXEEXT)
-	$(LINK) $(pngtest_LDFLAGS) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
+	$(LINK) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
 install-binSCRIPTS: $(bin_SCRIPTS)
 	@$(NORMAL_INSTALL)
-	test -z "$(bindir)" || $(mkdir_p) "$(DESTDIR)$(bindir)"
+	test -z "$(bindir)" || $(MKDIR_P) "$(DESTDIR)$(bindir)"
 	@list='$(bin_SCRIPTS)'; for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  if test -f $$d$$p; then \
@@ -489,235 +497,235 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pngtest.Po@am__quote@
 
 .c.o:
-@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(COMPILE) -c $<
 
 .c.obj:
-@am__fastdepCC_TRUE@	if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ `$(CYGPATH_W) '$<'`; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`
 
 .c.lo:
-@am__fastdepCC_TRUE@	if $(LTCOMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Plo"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<
 
 libpng_la-png.lo: png.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-png.lo -MD -MP -MF "$(DEPDIR)/libpng_la-png.Tpo" -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-png.Tpo" "$(DEPDIR)/libpng_la-png.Plo"; else rm -f "$(DEPDIR)/libpng_la-png.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-png.lo -MD -MP -MF $(DEPDIR)/libpng_la-png.Tpo -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-png.Tpo $(DEPDIR)/libpng_la-png.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='png.c' object='libpng_la-png.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
 
 libpng_la-pngset.lo: pngset.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngset.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngset.Tpo" -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngset.Tpo" "$(DEPDIR)/libpng_la-pngset.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngset.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngset.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngset.Tpo -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngset.Tpo $(DEPDIR)/libpng_la-pngset.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngset.c' object='libpng_la-pngset.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
 
 libpng_la-pngget.lo: pngget.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngget.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngget.Tpo" -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngget.Tpo" "$(DEPDIR)/libpng_la-pngget.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngget.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngget.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngget.Tpo -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngget.Tpo $(DEPDIR)/libpng_la-pngget.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngget.c' object='libpng_la-pngget.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c
 
 libpng_la-pngrutil.lo: pngrutil.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngrutil.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngrutil.Tpo" -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngrutil.Tpo" "$(DEPDIR)/libpng_la-pngrutil.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngrutil.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngrutil.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngrutil.Tpo -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngrutil.Tpo $(DEPDIR)/libpng_la-pngrutil.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngrutil.c' object='libpng_la-pngrutil.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngrutil.lo `test -f 'pngrutil.c' || echo '$(srcdir)/'`pngrutil.c
 
 libpng_la-pngtrans.lo: pngtrans.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngtrans.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngtrans.Tpo" -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngtrans.Tpo" "$(DEPDIR)/libpng_la-pngtrans.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngtrans.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngtrans.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngtrans.Tpo -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngtrans.Tpo $(DEPDIR)/libpng_la-pngtrans.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngtrans.c' object='libpng_la-pngtrans.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngtrans.lo `test -f 'pngtrans.c' || echo '$(srcdir)/'`pngtrans.c
 
 libpng_la-pngwutil.lo: pngwutil.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngwutil.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngwutil.Tpo" -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngwutil.Tpo" "$(DEPDIR)/libpng_la-pngwutil.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngwutil.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngwutil.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngwutil.Tpo -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngwutil.Tpo $(DEPDIR)/libpng_la-pngwutil.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngwutil.c' object='libpng_la-pngwutil.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
 
 libpng_la-pngread.lo: pngread.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngread.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngread.Tpo" -c -o libpng_la-pngread.lo `test -f 'pngread.c' || echo '$(srcdir)/'`pngread.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngread.Tpo" "$(DEPDIR)/libpng_la-pngread.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngread.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngread.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngread.Tpo -c -o libpng_la-pngread.lo `test -f 'pngread.c' || echo '$(srcdir)/'`pngread.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngread.Tpo $(DEPDIR)/libpng_la-pngread.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngread.c' object='libpng_la-pngread.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngread.lo `test -f 'pngread.c' || echo '$(srcdir)/'`pngread.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngread.lo `test -f 'pngread.c' || echo '$(srcdir)/'`pngread.c
 
 libpng_la-pngrio.lo: pngrio.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngrio.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngrio.Tpo" -c -o libpng_la-pngrio.lo `test -f 'pngrio.c' || echo '$(srcdir)/'`pngrio.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngrio.Tpo" "$(DEPDIR)/libpng_la-pngrio.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngrio.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngrio.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngrio.Tpo -c -o libpng_la-pngrio.lo `test -f 'pngrio.c' || echo '$(srcdir)/'`pngrio.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngrio.Tpo $(DEPDIR)/libpng_la-pngrio.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngrio.c' object='libpng_la-pngrio.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngrio.lo `test -f 'pngrio.c' || echo '$(srcdir)/'`pngrio.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngrio.lo `test -f 'pngrio.c' || echo '$(srcdir)/'`pngrio.c
 
 libpng_la-pngwio.lo: pngwio.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngwio.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pngwio.Tpo" -c -o libpng_la-pngwio.lo `test -f 'pngwio.c' || echo '$(srcdir)/'`pngwio.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pngwio.Tpo" "$(DEPDIR)/libpng_la-pngwio.Plo"; else rm -f "$(DEPDIR)/libpng_la-pngwio.Tpo"; exit 1; fi
+@am__fastdepCC_TRUE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pngwio.lo -MD -MP -MF $(DEPDIR)/libpng_la-pngwio.Tpo -c -o libpng_la-pngwio.lo `test -f 'pngwio.c' || echo '$(srcdir)/'`pngwio.c
+@am__fastdepCC_TRUE@	mv -f $(DEPDIR)/libpng_la-pngwio.Tpo $(DEPDIR)/libpng_la-pngwio.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngwio.c' object='libpng_la-pngwio.lo' libtool=yes @AMDEPBACKSLASH@
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 libpng_la-pngwrite.lo: pngwrite.c
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 libpng_la-pngrtran.lo: pngrtran.c
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 libpng_la-pngwtran.lo: pngwtran.c
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 libpng_la-pngmem.lo: pngmem.c
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 libpng_la-pngerror.lo: pngerror.c
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 libpng_la-pngpread.lo: pngpread.c
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 libpng12_la-png.lo: png.c
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 libpng12_la-pngset.lo: pngset.c
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 libpng12_la-pngget.lo: pngget.c
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 libpng12_la-pngrutil.lo: pngrutil.c
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 libpng12_la-pngtrans.lo: pngtrans.c
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 @AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngpread.c' object='libpng12_la-pngpread.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
 
 mostlyclean-libtool:
 	-rm -f *.lo
@@ -727,10 +735,9 @@ clean-libtool:
 
 distclean-libtool:
 	-rm -f libtool
-uninstall-info-am:
 install-man3: $(man3_MANS) $(man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man3dir)" || $(mkdir_p) "$(DESTDIR)$(man3dir)"
+	test -z "$(man3dir)" || $(MKDIR_P) "$(DESTDIR)$(man3dir)"
 	@list='$(man3_MANS) $(dist_man3_MANS) $(nodist_man3_MANS)'; \
 	l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
 	for i in $$l2; do \
@@ -775,7 +782,7 @@ uninstall-man3:
 	done
 install-man5: $(man5_MANS) $(man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man5dir)" || $(mkdir_p) "$(DESTDIR)$(man5dir)"
+	test -z "$(man5dir)" || $(MKDIR_P) "$(DESTDIR)$(man5dir)"
 	@list='$(man5_MANS) $(dist_man5_MANS) $(nodist_man5_MANS)'; \
 	l2='$(man_MANS) $(dist_man_MANS) $(nodist_man_MANS)'; \
 	for i in $$l2; do \
@@ -820,7 +827,7 @@ uninstall-man5:
 	done
 install-pkgconfigDATA: $(pkgconfig_DATA)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgconfigdir)" || $(mkdir_p) "$(DESTDIR)$(pkgconfigdir)"
+	test -z "$(pkgconfigdir)" || $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)"
 	@list='$(pkgconfig_DATA)'; for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  f=$(am__strip_dir) \
@@ -837,7 +844,7 @@ uninstall-pkgconfigDATA:
 	done
 install-pkgincludeHEADERS: $(pkginclude_HEADERS)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgincludedir)" || $(mkdir_p) "$(DESTDIR)$(pkgincludedir)"
+	test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
 	@list='$(pkginclude_HEADERS)'; for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  f=$(am__strip_dir) \
@@ -858,8 +865,8 @@ ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '    { files[$$0] = 1; } \
-	       END { for (i in files) print i; }'`; \
+	  $(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	mkid -fID $$unique
 tags: TAGS
 
@@ -871,8 +878,8 @@ TAGS:  $(HEADERS) $(SOURCES) config.h.in $(TAGS_DEPENDENCIES) \
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '    { files[$$0] = 1; } \
-	       END { for (i in files) print i; }'`; \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
 	  test -n "$$unique" || unique=$$empty_fix; \
 	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
@@ -882,13 +889,12 @@ ctags: CTAGS
 CTAGS:  $(HEADERS) $(SOURCES) config.h.in $(TAGS_DEPENDENCIES) \
 		$(TAGS_FILES) $(LISP)
 	tags=; \
-	here=`pwd`; \
 	list='$(SOURCES) $(HEADERS) config.h.in $(LISP) $(TAGS_FILES)'; \
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '    { files[$$0] = 1; } \
-	       END { for (i in files) print i; }'`; \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	test -z "$(CTAGS_ARGS)$$tags$$unique" \
 	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
 	     $$tags $$unique
@@ -902,9 +908,9 @@ distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
 check-TESTS: $(TESTS)
-	@failed=0; all=0; xfail=0; xpass=0; skip=0; \
+	@failed=0; all=0; xfail=0; xpass=0; skip=0; ws='[	 ]'; \
 	srcdir=$(srcdir); export srcdir; \
-	list='$(TESTS)'; \
+	list=' $(TESTS) '; \
 	if test -n "$$list"; then \
 	  for tst in $$list; do \
 	    if test -f ./$$tst; then dir=./; \
@@ -913,7 +919,7 @@ check-TESTS: $(TESTS)
 	    if $(TESTS_ENVIRONMENT) $${dir}$$tst; then \
 	      all=`expr $$all + 1`; \
 	      case " $(XFAIL_TESTS) " in \
-	      *" $$tst "*) \
+	      *$$ws$$tst$$ws*) \
 		xpass=`expr $$xpass + 1`; \
 		failed=`expr $$failed + 1`; \
 		echo "XPASS: $$tst"; \
@@ -925,7 +931,7 @@ check-TESTS: $(TESTS)
 	    elif test $$? -ne 77; then \
 	      all=`expr $$all + 1`; \
 	      case " $(XFAIL_TESTS) " in \
-	      *" $$tst "*) \
+	      *$$ws$$tst$$ws*) \
 		xfail=`expr $$xfail + 1`; \
 		echo "XFAIL: $$tst"; \
 	      ;; \
@@ -976,24 +982,22 @@ check-TESTS: $(TESTS)
 
 distdir: $(DISTFILES)
 	$(am__remove_distdir)
-	mkdir $(distdir)
-	$(mkdir_p) $(distdir)/${srcdir}/contrib/gregbook $(distdir)/${srcdir}/contrib/pngminus $(distdir)/${srcdir}/contrib/pngsuite $(distdir)/${srcdir}/contrib/visupng $(distdir)/${srcdir}/projects $(distdir)/${srcdir}/projects/beos $(distdir)/${srcdir}/projects/cbuilder5 $(distdir)/${srcdir}/projects/visualc6 $(distdir)/${srcdir}/projects/visualc71 $(distdir)/${srcdir}/scripts $(distdir)/scripts
-	@srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; \
-	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's|.|.|g'`; \
-	list='$(DISTFILES)'; for file in $$list; do \
-	  case $$file in \
-	    $(srcdir)/*) file=`echo "$$file" | sed "s|^$$srcdirstrip/||"`;; \
-	    $(top_srcdir)/*) file=`echo "$$file" | sed "s|^$$topsrcdirstrip/|$(top_builddir)/|"`;; \
-	  esac; \
+	test -d $(distdir) || mkdir $(distdir)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
 	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
-	  dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
-	  if test "$$dir" != "$$file" && test "$$dir" != "."; then \
-	    dir="/$$dir"; \
-	    $(mkdir_p) "$(distdir)$$dir"; \
-	  else \
-	    dir=''; \
-	  fi; \
 	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
 	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
 	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
 	    fi; \
@@ -1007,7 +1011,7 @@ distdir: $(DISTFILES)
 	-find $(distdir) -type d ! -perm -777 -exec chmod a+rwx {} \; -o \
 	  ! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; -o \
 	  ! -type d ! -perm -400 -exec chmod a+r {} \; -o \
-	  ! -type d ! -perm -444 -exec $(SHELL) $(install_sh) -c -m a+r {} {} \; \
+	  ! -type d ! -perm -444 -exec $(install_sh) -c -m a+r {} {} \; \
 	|| chmod -R a+r $(distdir)
 dist-gzip: distdir
 	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
@@ -1017,6 +1021,10 @@ dist-bzip2: distdir
 	tardir=$(distdir) && $(am__tar) | bzip2 -9 -c >$(distdir).tar.bz2
 	$(am__remove_distdir)
 
+dist-lzma: distdir
+	tardir=$(distdir) && $(am__tar) | lzma -9 -c >$(distdir).tar.lzma
+	$(am__remove_distdir)
+
 dist-tarZ: distdir
 	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
 	$(am__remove_distdir)
@@ -1043,6 +1051,8 @@ distcheck: dist
 	  GZIP=$(GZIP_ENV) gunzip -c $(distdir).tar.gz | $(am__untar) ;;\
 	*.tar.bz2*) \
 	  bunzip2 -c $(distdir).tar.bz2 | $(am__untar) ;;\
+	*.tar.lzma*) \
+	  unlzma -c $(distdir).tar.lzma | $(am__untar) ;;\
 	*.tar.Z*) \
 	  uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
 	*.shar.gz*) \
@@ -1082,7 +1092,7 @@ distcheck: dist
 	$(am__remove_distdir)
 	@(echo "$(distdir) archives ready for distribution: "; \
 	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
-	  sed -e '1{h;s/./=/g;p;x;}' -e '$${p;x;}'
+	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
 distuninstallcheck:
 	@cd $(distuninstallcheck_dir) \
 	&& test `$(distuninstallcheck_listfiles) | wc -l` -le 1 \
@@ -1109,7 +1119,7 @@ all-am: Makefile $(LTLIBRARIES) $(SCRIPTS) $(MANS) $(DATA) $(HEADERS) \
 		config.h
 installdirs:
 	for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" "$(DESTDIR)$(man3dir)" "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)"; do \
-	  test -z "$$dir" || $(mkdir_p) "$$dir"; \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
 install: install-am
 install-exec: install-exec-am
@@ -1136,6 +1146,7 @@ distclean-generic:
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
 clean: clean-am
 
 clean-am: clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
@@ -1163,14 +1174,22 @@ install-data-am: install-man install-pkgconfigDATA \
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) install-data-hook
 
+install-dvi: install-dvi-am
+
 install-exec-am: install-binSCRIPTS install-libLTLIBRARIES
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) install-exec-hook
 
+install-html: install-html-am
+
 install-info: install-info-am
 
 install-man: install-man3 install-man5
 
+install-pdf: install-pdf-am
+
+install-ps: install-ps-am
+
 installcheck-am:
 
 maintainer-clean: maintainer-clean-am
@@ -1193,31 +1212,36 @@ ps: ps-am
 
 ps-am:
 
-uninstall-am: uninstall-binSCRIPTS uninstall-info-am \
-	uninstall-libLTLIBRARIES uninstall-man uninstall-pkgconfigDATA \
+uninstall-am: uninstall-binSCRIPTS uninstall-libLTLIBRARIES \
+	uninstall-man uninstall-pkgconfigDATA \
 	uninstall-pkgincludeHEADERS
 	@$(NORMAL_INSTALL)
 	$(MAKE) $(AM_MAKEFLAGS) uninstall-hook
 
 uninstall-man: uninstall-man3 uninstall-man5
 
+.MAKE: install-am install-data-am install-exec-am install-strip \
+	uninstall-am
+
 .PHONY: CTAGS GTAGS all all-am am--refresh check check-TESTS check-am \
 	clean clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
 	clean-libtool ctags dist dist-all dist-bzip2 dist-gzip \
-	dist-shar dist-tarZ dist-zip distcheck distclean \
+	dist-lzma dist-shar dist-tarZ 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-exec install-exec-am \
-	install-exec-hook install-info install-info-am \
+	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 \
 	install-libLTLIBRARIES install-man install-man3 install-man5 \
-	install-pkgconfigDATA install-pkgincludeHEADERS install-strip \
-	installcheck installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-compile \
-	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	tags uninstall uninstall-am uninstall-binSCRIPTS \
-	uninstall-hook uninstall-info-am uninstall-libLTLIBRARIES \
+	install-pdf install-pdf-am install-pkgconfigDATA \
+	install-pkgincludeHEADERS install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am \
+	uninstall-binSCRIPTS uninstall-hook uninstall-libLTLIBRARIES \
 	uninstall-man uninstall-man3 uninstall-man5 \
 	uninstall-pkgconfigDATA uninstall-pkgincludeHEADERS
 

README

@@ -1,4 +1,4 @@
-README for libpng version 1.2.26 - April 2, 2008 (shared library 12.0)
+README for libpng version 1.2.27beta06 - April 21, 2008 (shared library 12.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -191,11 +191,11 @@ Files in this distribution:
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng12.so.0.1.2.26)
+                            gcc, creates libpng12.so.0.1.2.27beta06)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.26)
+                            (gcc, creates libpng12.so.0.1.2.27beta06)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.26,
+                            (gcc, creates libpng12.so.0.1.2.27beta06,
                             uses assembler code tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -217,12 +217,12 @@ Files in this distribution:
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng12.so.0.1.2.26)
+                            (gcc, creates libpng12.so.0.1.2.27beta06)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.26)
+                            (gcc, creates libpng12.so.0.1.2.27beta06)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.26)
+                            (gcc, creates libpng12.so.0.1.2.27beta06)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc

Y2KINFO

@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      April 2, 2008
+      April 21, 2008
 
       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 1.2.26 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.27beta06 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer

configure.ac

@@ -18,15 +18,15 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.26], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.27beta06], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.26
+PNGLIB_VERSION=1.2.27beta06
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
-PNGLIB_RELEASE=26
+PNGLIB_RELEASE=27
 
 dnl End of version number stuff
 
@@ -38,6 +38,7 @@ AC_PROG_CC
 AC_PROG_LD
 AC_PROG_CPP
 AC_CHECK_TOOL(SED, sed, :)
+AC_LIBTOOL_WIN32_DLL
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET

libpng-1.2.27beta06.txt

@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.26 - April 2, 2008
+ libpng version 1.2.27beta06 - April 21, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2008 Glenn Randers-Pehrson
@@ -47,12 +47,14 @@ a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
 The W3C and ISO documents have identical technical content.
 
 The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>
+<http://www.libpng.org/pub/png/documents/>.  It is technically equivalent
+to the PNG specification (second edition) but has some additional material.
 
 The PNG-1.0 specification is available
 as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC.png.html>. Some
-additional chunks are described in the special-purpose public chunks
+W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
+
+Some additional chunks are described in the special-purpose public chunks
 documents at <http://www.libpng.org/pub/png/documents/>.
 
 Other information
@@ -260,15 +262,19 @@ input stream. You must supply the function
          png_unknown_chunkp chunk);
     {
        /* The unknown chunk structure contains your
-          chunk data: */
+          chunk data, along with similar data for any other
+          unknown chunks: */
+
            png_byte name[5];
            png_byte *data;
            png_size_t size;
+
        /* Note that libpng has already taken care of
           the CRC handling */
 
-       /* put your code here.  Return one of the
-          following: */
+       /* put your code here.  Search for your chunk in the
+          unknown chunk structure, process it, and return one
+          of the following: */
 
        return (-n); /* chunk had an error */
        return (0); /* did not recognize */
@@ -288,6 +294,11 @@ you can retrieve with
 
     png_get_user_chunk_ptr(png_ptr);
 
+If you call the png_set_read_user_chunk_fn() function, then all unknown
+chunks will be saved when read, in case your callback function will need
+one or more of them.  This behavior can be changed with the
+png_set_keep_unknown_chunks() function, described below.
+
 At this point, you can set up a callback function that will be
 called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
@@ -332,13 +343,13 @@ Unknown-chunk handling
 Now you get to set the way the library processes unknown chunks in the
 input PNG stream. Both known and unknown chunks will be read.  Normal
 behavior is that known chunks will be parsed into information in
-various info_ptr members; unknown chunks will be discarded. To change
+various info_ptr members while unknown chunks will be discarded. To change
 this, you can call:
 
     png_set_keep_unknown_chunks(png_ptr, keep,
         chunk_list, num_chunks);
-    keep       - 0: do not handle as unknown
-                 1: do not keep
+    keep       - 0: default unknown chunk handling
+                 1: ignore; do not keep
                  2: keep only if safe-to-copy
                  3: keep even if unsafe-to-copy
                You can use these definitions:
@@ -361,6 +372,37 @@ instances of png_set_keep_unknown_chunks(), the final instance will
 take precedence.  The IHDR and IEND chunks should not be named in
 chunk_list; if they are, libpng will process them normally anyway.
 
+Here is an example of the usage of png_set_keep_unknown_chunks(),
+where the private "vpAg" chunk will later be processed by a user chunk
+callback function:
+
+    png_byte vpAg[5]={118, 112,  65, 103, (png_byte) '\0'};
+
+    #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+      png_byte unused_chunks[]=
+      {
+        104,  73,  83,  84, (png_byte) '\0',   /* hIST */
+        105,  84,  88, 116, (png_byte) '\0',   /* iTXt */
+        112,  67,  65,  76, (png_byte) '\0',   /* pCAL */
+        115,  67,  65,  76, (png_byte) '\0',   /* sCAL */
+        115,  80,  76,  84, (png_byte) '\0',   /* sPLT */
+        116,  73,  77,  69, (png_byte) '\0',   /* tIME */
+      };
+    #endif
+
+    ...
+
+    #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+      /* ignore all unknown chunks: */
+      png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+      /* except for vpAg: */
+      png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+      /* also ignore unused known chunks: */
+      png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
+         (int)sizeof(unused_chunks)/5);
+    #endif
+
+
 The high-level read interface
 
 At this point there are two ways to proceed; through the high-level
@@ -1743,6 +1785,11 @@ Some of the more important parts of the png_info are:
                      can also be
                      PNG_INTRAPIXEL_DIFFERENCING)
 
+If you call png_set_IHDR(), the call must appear before any of the
+other png_set_*() functions, which might require access to some of
+the IHDR settings.  The remaining png_set_*() functions can be called
+in any order.
+
     png_set_PLTE(png_ptr, info_ptr, palette,
        num_palette);
     palette        - the palette for the file
@@ -2391,6 +2438,9 @@ Your malloc_fn() must return NULL in case of failure.  The png_malloc()
 function will normally call png_error() if it receives a NULL from the
 system memory allocator or from your replacement malloc_fn().
 
+Your free_fn() will never be called with a NULL ptr, since libpng's
+png_free() checks for NULL before calling free_fn().
+
 Input/Output in libpng is done through png_read() and png_write(),
 which currently just call fread() and fwrite().  The FILE * is stored in
 png_struct and is initialized via png_init_io().  If you wish to change
@@ -2796,13 +2846,13 @@ application:
 
 IX. Y2K Compliance in libpng
 
-April 2, 2008
+April 21, 2008
 
 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 1.2.26 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.27beta06 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "April 2, 2008"
+.TH LIBPNG 3 "April 21, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.26
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.27beta06
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -410,7 +410,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.26 - April 2, 2008
+ libpng version 1.2.27beta06 - April 21, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2008 Glenn Randers-Pehrson
@@ -457,12 +457,14 @@ a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
 The W3C and ISO documents have identical technical content.
 
 The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>
+<http://www.libpng.org/pub/png/documents/>.  It is technically equivalent
+to the PNG specification (second edition) but has some additional material.
 
 The PNG-1.0 specification is available
 as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC.png.html>. Some
-additional chunks are described in the special-purpose public chunks
+W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
+
+Some additional chunks are described in the special-purpose public chunks
 documents at <http://www.libpng.org/pub/png/documents/>.
 
 Other information
@@ -670,15 +672,19 @@ input stream. You must supply the function
          png_unknown_chunkp chunk);
     {
        /* The unknown chunk structure contains your
-          chunk data: */
+          chunk data, along with similar data for any other
+          unknown chunks: */
+
            png_byte name[5];
            png_byte *data;
            png_size_t size;
+
        /* Note that libpng has already taken care of
           the CRC handling */
 
-       /* put your code here.  Return one of the
-          following: */
+       /* put your code here.  Search for your chunk in the
+          unknown chunk structure, process it, and return one
+          of the following: */
 
        return (-n); /* chunk had an error */
        return (0); /* did not recognize */
@@ -698,6 +704,11 @@ you can retrieve with
 
     png_get_user_chunk_ptr(png_ptr);
 
+If you call the png_set_read_user_chunk_fn() function, then all unknown
+chunks will be saved when read, in case your callback function will need
+one or more of them.  This behavior can be changed with the
+png_set_keep_unknown_chunks() function, described below.
+
 At this point, you can set up a callback function that will be
 called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
@@ -742,13 +753,13 @@ If you need to retrieve the limits that are being applied, use
 Now you get to set the way the library processes unknown chunks in the
 input PNG stream. Both known and unknown chunks will be read.  Normal
 behavior is that known chunks will be parsed into information in
-various info_ptr members; unknown chunks will be discarded. To change
+various info_ptr members while unknown chunks will be discarded. To change
 this, you can call:
 
     png_set_keep_unknown_chunks(png_ptr, keep,
         chunk_list, num_chunks);
-    keep       - 0: do not handle as unknown
-                 1: do not keep
+    keep       - 0: default unknown chunk handling
+                 1: ignore; do not keep
                  2: keep only if safe-to-copy
                  3: keep even if unsafe-to-copy
                You can use these definitions:
@@ -771,6 +782,37 @@ instances of png_set_keep_unknown_chunks(), the final instance will
 take precedence.  The IHDR and IEND chunks should not be named in
 chunk_list; if they are, libpng will process them normally anyway.
 
+Here is an example of the usage of png_set_keep_unknown_chunks(),
+where the private "vpAg" chunk will later be processed by a user chunk
+callback function:
+
+    png_byte vpAg[5]={118, 112,  65, 103, (png_byte) '\0'};
+
+    #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+      png_byte unused_chunks[]=
+      {
+        104,  73,  83,  84, (png_byte) '\0',   /* hIST */
+        105,  84,  88, 116, (png_byte) '\0',   /* iTXt */
+        112,  67,  65,  76, (png_byte) '\0',   /* pCAL */
+        115,  67,  65,  76, (png_byte) '\0',   /* sCAL */
+        115,  80,  76,  84, (png_byte) '\0',   /* sPLT */
+        116,  73,  77,  69, (png_byte) '\0',   /* tIME */
+      };
+    #endif
+
+    ...
+
+    #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+      /* ignore all unknown chunks: */
+      png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
+      /* except for vpAg: */
+      png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
+      /* also ignore unused known chunks: */
+      png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
+         (int)sizeof(unused_chunks)/5);
+    #endif
+
+
 .SS The high-level read interface
 
 At this point there are two ways to proceed; through the high-level
@@ -2153,6 +2195,11 @@ Some of the more important parts of the png_info are:
                      can also be
                      PNG_INTRAPIXEL_DIFFERENCING)
 
+If you call png_set_IHDR(), the call must appear before any of the
+other png_set_*() functions, which might require access to some of
+the IHDR settings.  The remaining png_set_*() functions can be called
+in any order.
+
     png_set_PLTE(png_ptr, info_ptr, palette,
        num_palette);
     palette        - the palette for the file
@@ -2801,6 +2848,9 @@ Your malloc_fn() must return NULL in case of failure.  The png_malloc()
 function will normally call png_error() if it receives a NULL from the
 system memory allocator or from your replacement malloc_fn().
 
+Your free_fn() will never be called with a NULL ptr, since libpng's
+png_free() checks for NULL before calling free_fn().
+
 Input/Output in libpng is done through png_read() and png_write(),
 which currently just call fread() and fwrite().  The FILE * is stored in
 png_struct and is initialized via png_init_io().  If you wish to change
@@ -3206,13 +3256,13 @@ application:
 
 .SH IX. Y2K Compliance in libpng
 
-April 2, 2008
+April 21, 2008
 
 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 1.2.26 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.27beta06 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3432,6 +3482,9 @@ the first widely used release:
  1.2.25              13    10225  12.so.0.25[.0]
  1.2.26beta01-06     13    10226  12.so.0.26[.0]
  1.2.26rc01          13    10226  12.so.0.26[.0]
+ 1.2.26              13    10226  12.so.0.26[.0]
+ 1.0.32              10    10032  10.so.0.32[.0]
+ 1.2.27beta01-06     13    10227  12.so.0.27[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3487,7 +3540,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.26 - April 2, 2008:
+Libpng version 1.2.27beta06 - April 21, 2008:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3508,7 +3561,7 @@ included in the libpng distribution, the latter shall prevail.)
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.26, April 2, 2008, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.27beta06, April 21, 2008, are
 Copyright (c) 2004,2006-2008 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
@@ -3607,7 +3660,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-April 2, 2008
+April 21, 2008
 
 .\" end of man page
 

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "April 2, 2008"
+.TH LIBPNGPF 3 "April 21, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.26
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.27beta06
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "April 2, 2008"
+.TH PNG 5 "April 21, 2008"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -13,7 +13,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_26 Your_png_h_is_not_version_1_2_26;
+typedef version_1_2_27beta06 Your_png_h_is_not_version_1_2_27beta06;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -693,7 +693,7 @@ png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
    png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.26 - April 2, 2008\n\
+   return ((png_charp) "\n libpng version 1.2.27beta06 - April 21, 2008\n\
    Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");

png.h

@@ -1,7 +1,6 @@
-
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.26 - April 2, 2008
+ * libpng version 1.2.27beta06 - April 21, 2008
  * Copyright (c) 1998-2008 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.)
@@ -9,7 +8,7 @@
  * 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 1.2.26 - April 2, 2008: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.27beta06 - April 21, 2008: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -181,6 +180,9 @@
  *    1.2.25                  13    10225  12.so.0.25[.0]
  *    1.2.26beta01-06         13    10226  12.so.0.26[.0]
  *    1.2.26rc01              13    10226  12.so.0.26[.0]
+ *    1.2.26                  13    10226  12.so.0.26[.0]
+ *    1.0.32                  10    10032  10.so.0.32[.0]
+ *    1.2.27beta01-06         13    10227  12.so.0.27[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -190,7 +192,7 @@
  *    to the source version x.y.z (leading zeros in y and z).  Beta versions
  *    were given the previous public release number plus a letter, until
  *    version 1.0.6j; from then on they were given the upcoming public
- *    release number plus "betaNN" or "rcN".
+ *    release number plus "betaNN" or "rcNN".
  *
  *    Binary incompatibility exists only when applications make direct access
  *    to the info_ptr or png_ptr members through png.h, and the compiled
@@ -210,7 +212,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.26, April 2, 2008, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.27beta06, April 21, 2008, are
  * Copyright (c) 2004, 2006-2008 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:
@@ -322,13 +324,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    April 2, 2008
+ *    April 21, 2008
  *
  *    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 1.2.26 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.27beta06 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -384,9 +386,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.26"
+#define PNG_LIBPNG_VER_STRING "1.2.27beta06"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.26 - April 2, 2008\n"
+   " libpng version 1.2.27beta06 - April 21, 2008\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -394,11 +396,11 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 26
+#define PNG_LIBPNG_VER_RELEASE 27
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  0
+#define PNG_LIBPNG_VER_BUILD  06
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -415,14 +417,14 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
  * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
  * 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 10226 /* 1.2.26 */
+#define PNG_LIBPNG_VER 10227 /* 1.2.27 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 /* include the compression library's header */
@@ -1439,7 +1441,7 @@ struct png_struct_def
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_2_26;
+typedef png_structp version_1_2_27beta06;
 
 typedef png_struct FAR * FAR * png_structpp;
 

pngconf.h

@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.26 - April 2, 2008
+ * libpng version 1.2.27beta06 - April 21, 2008
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngmem.c

@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.2.26 [April 2, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -293,7 +293,7 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */
 
-   if(png_ptr == NULL) return;
+   if(png_ptr == NULL || ptr == NULL) return;
 
    if (png_ptr->offset_table != NULL)
    {

pngpread.c

@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.26 [April 2, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1502,9 +1502,14 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
                  png_sizeof(png_ptr->unknown_chunk.name));
       png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]='\0';
 
-      png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
       png_ptr->unknown_chunk.size = (png_size_t)length;
-      png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+      if (length == 0)
+         png_ptr->unknown_chunk.data = NULL;
+      else
+      {
+         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
+         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+      }
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
       if(png_ptr->read_user_chunk_fn != NULL)
       {

pngrtran.c

@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -548,9 +548,7 @@ png_set_expand(png_structp png_ptr)
    png_debug(1, "in png_set_expand\n");
    if(png_ptr == NULL) return;
    png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-#ifdef PNG_WARN_UNINITIALIZED_ROW
    png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 
 /* GRR 19990627:  the following three functions currently are identical
@@ -577,9 +575,7 @@ png_set_palette_to_rgb(png_structp png_ptr)
    png_debug(1, "in png_set_palette_to_rgb\n");
    if(png_ptr == NULL) return;
    png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-#ifdef PNG_WARN_UNINITIALIZED_ROW
    png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 
 #if !defined(PNG_1_0_X)
@@ -590,9 +586,7 @@ png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
    png_debug(1, "in png_set_expand_gray_1_2_4_to_8\n");
    if(png_ptr == NULL) return;
    png_ptr->transformations |= PNG_EXPAND;
-#ifdef PNG_WARN_UNINITIALIZED_ROW
    png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 #endif
 
@@ -615,9 +609,7 @@ png_set_tRNS_to_alpha(png_structp png_ptr)
 {
    png_debug(1, "in png_set_tRNS_to_alpha\n");
    png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-#ifdef PNG_WARN_UNINITIALIZED_ROW
    png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 #endif /* defined(PNG_READ_EXPAND_SUPPORTED) */
 
@@ -627,9 +619,7 @@ png_set_gray_to_rgb(png_structp png_ptr)
 {
    png_debug(1, "in png_set_gray_to_rgb\n");
    png_ptr->transformations |= PNG_GRAY_TO_RGB;
-#ifdef PNG_WARN_UNINITIALIZED_ROW
    png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
-#endif
 }
 #endif
 
@@ -967,7 +957,7 @@ png_init_read_transformations(png_structp png_ptr)
 	    /* Prevent the transformations being done again, and make sure
 	     * that the now spurious alpha channel is stripped - the code
 	     * has just reduced background composition and gamma correction
-	     * to a simply alpha channel strip.
+	     * to a simple alpha channel strip.
 	     */
 	    png_ptr->transformations &= ~PNG_BACKGROUND;
 	    png_ptr->transformations &= ~PNG_GAMMA;
@@ -1138,7 +1128,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
    {
       if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
       {
-         if (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND_tRNS))
+         if (png_ptr->num_trans &&
+              (png_ptr->transformations & PNG_EXPAND_tRNS))
             info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
          else
             info_ptr->color_type = PNG_COLOR_TYPE_RGB;
@@ -1151,8 +1142,10 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
          {
             if (png_ptr->transformations & PNG_EXPAND_tRNS)
               info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
+#if 0 /* Removed from libpng-1.2.27 */
             else
               info_ptr->color_type |= PNG_COLOR_MASK_COLOR;
+#endif
          }
          if (info_ptr->bit_depth < 8)
             info_ptr->bit_depth = 8;

pngrutil.c

@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.26 [April 2, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1241,15 +1241,9 @@ void /* PRIVATE */
 png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
    png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
-   int bit_mask;
 
    png_debug(1, "in png_handle_tRNS\n");
 
-   /* For non-indexed color, mask off any bits in the tRNS value that
-    * exceed the bit depth.  Some creators were writing extra bits there.
-    * This is not needed for indexed color. */
-   bit_mask = (1 << png_ptr->bit_depth) - 1;
-
    if (!(png_ptr->mode & PNG_HAVE_IHDR))
       png_error(png_ptr, "Missing IHDR before tRNS");
    else if (png_ptr->mode & PNG_HAVE_IDAT)
@@ -1278,7 +1272,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
       png_crc_read(png_ptr, buf, 2);
       png_ptr->num_trans = 1;
-      png_ptr->trans_values.gray = png_get_uint_16(buf) & bit_mask;
+      png_ptr->trans_values.gray = png_get_uint_16(buf);
    }
    else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
    {
@@ -1292,9 +1286,9 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       }
       png_crc_read(png_ptr, buf, (png_size_t)length);
       png_ptr->num_trans = 1;
-      png_ptr->trans_values.red = png_get_uint_16(buf) & bit_mask;
-      png_ptr->trans_values.green = png_get_uint_16(buf + 2) & bit_mask;
-      png_ptr->trans_values.blue = png_get_uint_16(buf + 4) & bit_mask;
+      png_ptr->trans_values.red = png_get_uint_16(buf);
+      png_ptr->trans_values.green = png_get_uint_16(buf + 2);
+      png_ptr->trans_values.blue = png_get_uint_16(buf + 4);
    }
    else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
    {
@@ -2227,9 +2221,14 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
                   (png_charp)png_ptr->chunk_name, 
                   png_sizeof(png_ptr->unknown_chunk.name));
        png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
-       png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
        png_ptr->unknown_chunk.size = (png_size_t)length;
-       png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+       if (length == 0)
+         png_ptr->unknown_chunk.data = NULL;
+       else
+       {
+         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
+         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
+       }
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
        if(png_ptr->read_user_chunk_fn != NULL)
        {
@@ -2251,7 +2250,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
        }
        else
 #endif
-         png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+       png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
        png_free(png_ptr, png_ptr->unknown_chunk.data);
        png_ptr->unknown_chunk.data = NULL;
    }
@@ -3149,8 +3148,7 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
 
    if(row_bytes + 64 > png_ptr->old_big_row_buf_size)
    {
-     if (png_ptr->big_row_buf)
-        png_free(png_ptr,png_ptr->big_row_buf);
+     png_free(png_ptr,png_ptr->big_row_buf);
      png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes+64);
      png_ptr->row_buf = png_ptr->big_row_buf+32;
      png_ptr->old_big_row_buf_size = row_bytes+64;
@@ -3165,8 +3163,7 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
 
    if(png_ptr->rowbytes+1 > png_ptr->old_prev_row_size)
    {
-     if (png_ptr->prev_row)
-        png_free(png_ptr,png_ptr->prev_row);
+     png_free(png_ptr,png_ptr->prev_row);
      png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
         png_ptr->rowbytes + 1));
      png_ptr->old_prev_row_size = png_ptr->rowbytes+1;

pngset.c

@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -914,6 +914,8 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
+   png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
+
    if (trans != NULL)
    {
        /*
@@ -921,30 +923,41 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
         * we do it for backward compatibility with the way the png_handle_tRNS
         * function used to do the allocation.
         */
-#ifdef PNG_FREE_ME_SUPPORTED
-       png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
-#endif
+
        /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
        png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
            (png_uint_32)PNG_MAX_PALETTE_LENGTH);
-       if (num_trans <= PNG_MAX_PALETTE_LENGTH)
+       if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
          png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
-#ifdef PNG_FREE_ME_SUPPORTED
-       info_ptr->free_me |= PNG_FREE_TRNS;
-#else
-       png_ptr->flags |= PNG_FLAG_FREE_TRNS;
-#endif
    }
 
    if (trans_values != NULL)
    {
+      int sample_max = (1 << info_ptr->bit_depth);
+      if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+          (int)trans_values->gray > sample_max) ||
+          (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+          ((int)trans_values->red > sample_max ||
+          (int)trans_values->green > sample_max ||
+          (int)trans_values->blue > sample_max)))
+        png_warning(png_ptr,
+           "tRNS chunk has out-of-range samples for bit_depth");
       png_memcpy(&(info_ptr->trans_values), trans_values,
          png_sizeof(png_color_16));
       if (num_trans == 0)
         num_trans = 1;
    }
+
    info_ptr->num_trans = (png_uint_16)num_trans;
-   info_ptr->valid |= PNG_INFO_tRNS;
+   if (num_trans != 0)
+   {
+      info_ptr->valid |= PNG_INFO_tRNS;
+#ifdef PNG_FREE_ME_SUPPORTED
+      info_ptr->free_me |= PNG_FREE_TRNS;
+#else
+      png_ptr->flags |= PNG_FLAG_FREE_TRNS;
+#endif
+   }
 }
 #endif
 
@@ -1040,28 +1053,31 @@ png_set_unknown_chunks(png_structp png_ptr,
 
     for (i = 0; i < num_unknowns; i++)
     {
-        png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
-        png_unknown_chunkp from = unknowns + i;
+       png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
+       png_unknown_chunkp from = unknowns + i;
 
-        png_memcpy((png_charp)to->name, 
-                   (png_charp)from->name, 
-                   png_sizeof(from->name));
-        to->name[png_sizeof(to->name)-1] = '\0';
+       png_memcpy((png_charp)to->name, 
+                  (png_charp)from->name, 
+                  png_sizeof(from->name));
+       to->name[png_sizeof(to->name)-1] = '\0';
+       to->size = from->size;
+       /* note our location in the read or write sequence */
+       to->location = (png_byte)(png_ptr->mode & 0xff);
 
-        to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
-        if (to->data == NULL)
-        {
-           png_warning(png_ptr,
+       if (from->size == 0)
+          to->data=NULL;
+       else
+       {
+          to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
+          if (to->data == NULL)
+          {
+             png_warning(png_ptr,
               "Out of memory while processing unknown chunk.");
-        }
-        else
-        {
-           png_memcpy(to->data, from->data, from->size);
-           to->size = from->size;
-
-           /* note our location in the read or write sequence */
-           to->location = (png_byte)(png_ptr->mode & 0xff);
-        }
+             to->size=0;
+          }
+          else
+             png_memcpy(to->data, from->data, from->size);
+       }
     }
 
     info_ptr->unknown_chunks = np;
@@ -1193,8 +1209,7 @@ png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
 {
     if (png_ptr == NULL)
        return;
-    if(png_ptr->zbuf)
-       png_free(png_ptr, png_ptr->zbuf);
+    png_free(png_ptr, png_ptr->zbuf);
     png_ptr->zbuf_size = (png_size_t)size;
     png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
     png_ptr->zstream.next_out = png_ptr->zbuf;

pngtest.c

@@ -1,9 +1,9 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.2.23 - [November 6, 2007]
+ * Last changed in libpng 1.2.27 - [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  *
@@ -689,8 +689,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
    {
       fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
-      if (row_buf)
-         png_free(read_ptr, row_buf);
+      png_free(read_ptr, row_buf);
       png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
 #ifdef PNG_WRITE_SUPPORTED
       png_destroy_info_struct(write_ptr, &write_end_info_ptr);
@@ -1024,8 +1023,16 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
          &trans_values))
       {
-         png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
-            trans_values);
+         int sample_max = (1 << read_info_ptr->bit_depth);
+         /* libpng doesn't reject a tRNS chunk with out-of-range samples */
+         if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+            (int)trans_values->gray > sample_max) ||
+            (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+            ((int)trans_values->red > sample_max ||
+            (int)trans_values->green > sample_max ||
+            (int)trans_values->blue > sample_max))))
+           png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
+              trans_values);
       }
    }
 #endif
@@ -1553,4 +1560,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_26 your_png_h_is_not_version_1_2_26;
+typedef version_1_2_27beta06 your_png_h_is_not_version_1_2_27beta06;

pngwrite.c

@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -112,6 +112,8 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
             ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
             (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
          {
+            if (up->size == 0)
+               png_warning(png_ptr, "Writing zero-length unknown chunk");
             png_write_chunk(png_ptr, up->name, up->data, up->size);
          }
        }

pngwutil.c

@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.26 [April 2, 2008]
+ * Last changed in libpng 1.2.27 [April 21, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1516,8 +1516,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
 
    png_write_chunk_end(png_ptr);
    png_free(png_ptr, new_key);
-   if (new_lang)
-     png_free(png_ptr, new_lang);
+   png_free(png_ptr, new_lang);
 }
 #endif
 

scripts/CMakeLists.txt

@@ -6,7 +6,7 @@ project(PNG)
 
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 2)
-set(PNGLIB_RELEASE 26)
+set(PNGLIB_RELEASE 27)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
 
@@ -169,7 +169,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
 
 # SET UP LINKS
 set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.2.26
+#    VERSION 0.${PNGLIB_RELEASE}.1.2.27beta06
      VERSION 0.${PNGLIB_RELEASE}.0
      SOVERSION 0
      CLEAN_DIRECT_OUTPUT 1)

scripts/libpng-config-head.in

@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.2.26
+version=1.2.27beta06
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc-configure.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.26
+Version: 1.2.27beta06
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir} @LIBPNG_NO_MMX@

scripts/libpng.pc.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.26
+Version: 1.2.27beta06
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}

scripts/makefile.32sunu

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.64sunu

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.aix

@@ -20,7 +20,7 @@ LN_SF = ln -f -s
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local

scripts/makefile.beos

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.cygwin

@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll

scripts/makefile.darwin

@@ -19,7 +19,7 @@ ZLIBINC=../zlib
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.dec

@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 

scripts/makefile.elf

@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.gcmmx

@@ -14,7 +14,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.hp64

@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.hpgcc

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.hpux

@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.linux

@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.mingw

@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 MINGDLL = 12
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll

scripts/makefile.ne12bsd

@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.26
+SHLIB_MINOR=	1.2.27beta06
 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

scripts/makefile.netbsd

@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.26
+SHLIB_MINOR=	1.2.27beta06
 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

scripts/makefile.nommx

@@ -7,7 +7,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.openbsd

@@ -8,7 +8,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.26
+SHLIB_MINOR=	1.2.27beta06
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \

scripts/makefile.sco

@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.sggcc

@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.sgi

@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.so9

@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 

scripts/makefile.solaris

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/makefile.solaris-x86

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.26
+PNGMIN = 1.2.27beta06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:

scripts/pngos2.def

@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.26
+; Version 1.2.27beta06
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"

scripts/pngw32.def

@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.2.26
+;Version 1.2.27beta06
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3