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        Changes in TIFF v4.3.0
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<BASEFONT SIZE=4>
<B><FONT SIZE="+3">T</FONT>IFF <FONT SIZE="+2">C</FONT>HANGE <FONT SIZE="+2">I</FONT>NFORMATION</B>
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<div style="margin-left: 3em">
<HR SIZE=4 ALIGN=left>
<B>Current Version</B>: v4.3.0<BR>
<B>Previous Version</B>: <A HREF="v4.2.0.html">v4.2.0</A><BR>
<B>Master Download Site</B>: <A HREF="https://download.osgeo.org/libtiff">
download.osgeo.org</a>, directory pub/libtiff<BR>
<B>Master HTTP Site #1</B>: <A HREF="http://www.simplesystems.org/libtiff/">
  http://www.simplesystems.org/libtiff/</A><BR>
<B>Master HTTP Site #2</B>: <A HREF="https://libtiff.gitlab.io/libtiff/">
  https://libtiff.gitlab.io/libtiff/</A><BR>
<B>Master HTTP Site #3</B>: <A HREF="http://libtiff.maptools.org/">
http://libtiff.maptools.org/</a>
<HR SIZE=4 ALIGN=left>
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<P>
This document provides a summary of significant changes made to the
software between the <I>previous</I> and <I>current</I> versions (see
above). A fully-detailed change summary is provided by the ChangeLog file
included in the release package and by the Git commit history:
<UL>
<LI><A HREF="#highlights">Major Changes</A>
<LI><A HREF="#configure">Changes in the software configuration</A>
<LI><A HREF="#libtiff">Changes in libtiff</A>
<LI><A HREF="#tools">Changes in the tools</A>
<LI><A HREF="#contrib">Changes in the contrib area</A>
</UL>
<p>
<P><HR ALIGN=left>

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<A NAME="highlights"><B><FONT SIZE="+3">M</FONT>AJOR CHANGES:</B></A>

<UL>

  <LI>Build and usage of the library and its utilities requires a C99 capable
      compiler.</LI>

  <LI>New optional codec for the LERC (Limited Error Raster Compression) compression scheme.
      To have it available, configure libtiff against the SDK available at
      https://github.com/esri/lerc</LI>

  <LI>CMake build: revamp of build scripts</LI>
</UL>


<P><HR ALIGN=left>
<!-- ============================================================= -->

<A NAME="configure"><B><FONT SIZE="+3">C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>

<UL>

  <LI>cmake: revamp of the cmake build scripts. There are impacts on the case of
      some options.</LI>

  <LI>cmake: update minimum version and policy version to 3.9.</LI>

  <LI>Remove NMake build support. The functionality provided by the NMake build
      is now completely superseded by the CMake build.</LI>

  <LI>Remove antiquated Scons and makefile.lcc build support.</LI>

  <LI>Remove non-functional VMS and WinCE support.</LI>

  <LI>autogen.sh now updates config.guess and config.sub from master gnulib version.</LI>

</UL>

<P><HR ALIGN=left>

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<A NAME="libtiff"><B><FONT SIZE="+3">C</FONT>HANGES IN LIBTIFF:</B></A>

<UL>

  <LI>Use of "int8", "uint8", "int16", "uint16", "int32", "uint32", "int64", "uint64"
      typedefs is now deprecated. libtiff code and headers no longer use them,
      and use their C99 standard equivalents (with "_t" suffix). Those typedefs
      are still available, with deprecation warnings, but external code is strongly
      encouraged to use the corresponding C99 stdint.h types. The deprecated
      types might be removed in a future release.</LI>

  <LI>Removal of unused, or now useless due to C99 availability, functions in port/</LI>

  <LI>A few issues spotted by static code analysis tools fixed. Compiler
      warnings addressed.</LI>
</UL>

<P><HR ALIGN=left>

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<A NAME="tools"><B><FONT SIZE="+3">C</FONT>HANGES IN THE TOOLS:</B></A>

<UL>

  <LI>In usage text, insert a line of text summarizing each tool's purpose </LI>

  <LI>tiff tools: made display of compression methods and their parameters
      conditional on their actual availability</LI>

  <LI>tiff2ps: exit the loop in case of error (#232)</LI>

  <LI>tiff2pdf: check that tiff_datasize fits in a signed tsize_t (#202)</LI>

  <LI>tiffsplit: exit with EXIT_FAILURE if there are extra args on the command line</LI>

  <LI>tiffcmp: fix comparaison with pixels that are fractional number of bytes (#53)</LI>

</UL>

<P><HR ALIGN=left>

<!-- ============================================================= -->

<A NAME="contrib"><B><FONT SIZE="+3">C</FONT>HANGES IN THE CONTRIB AREA:</B></A>

<UL>

  <LI>iptcutil.c - set '#ifdef _WIN32' (was '#ifdef WIN32', which failed at build time)</LI>

</UL>

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