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Changes in TIFF v4.3.0
======================
.. table:: References
:widths: auto
====================== ==========================================
Current Version v4.3.0 (:tag:`v4.3.0`)
Previous Version :doc:`v4.2.0 <v4.2.0>`
Master Download Site `<https://download.osgeo.org/libtiff/>`_
Master HTTP Site #1 `<http://www.simplesystems.org/libtiff/>`_
Master HTTP Site #2 `<https://libtiff.gitlab.io/libtiff/>`_
Master HTTP Site #3 `<http://libtiff.maptools.org/>`_
====================== ==========================================
This document provides a summary of significant changes made to the
software between the *previous* and *current* versions (see
above). A fully-detailed change summary is provided by the :file:`ChangeLog` file
included in the release package and by the Git commit history:
Major changes
-------------
* Build and usage of the library and its utilities requires a C99 capable
compiler.
* 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>`_
* CMake build: revamp of build scripts
Software configuration changes
------------------------------
* cmake: revamp of the cmake build scripts. There are impacts on the case of
some options.
* cmake: update minimum version and policy version to 3.9.
* Remove NMake build support. The functionality provided by the NMake build
is now completely superseded by the CMake build.
* Remove antiquated Scons and makefile.lcc build support.
* Remove non-functional VMS and WinCE support.
* :file:`autogen.sh` now updates :file:`config.guess` and :file:`config.sub` from master gnulib version.
Library changes
---------------
* Use of :c:type:`int8`, :c:type:`uint8`, :c:type:`int16`, :c:type:`uint16`,
:c:type:`int32`, :c:type:`uint32`, :c:type:`int64`, :c:type:`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 :file:`stdint.h` types. The deprecated
types might be removed in a future release.
* Removal of unused, or now useless due to C99 availability, functions in :file:`port/`
* A few issues spotted by static code analysis tools fixed. Compiler
warnings addressed.
Tools changes
-------------
* In usage text, insert a line of text summarizing each tool's purpose
* tiff tools: made display of compression methods and their parameters
conditional on their actual availability
* :program:`tiff2ps`: exit the loop in case of error (#232)
* :program:`tiff2pdf`: check that tiff_datasize fits in a signed :c:type:`tsize_t` (#202)
* :program:`tiffsplit`: exit with :c:macro:`EXIT_FAILURE` if there are extra args on the command line
* :program:`tiffcmp`: fix comparaison with pixels that are fractional number of bytes (#53)
Contributed software changes
----------------------------
* :file:`iptcutil.c` - set ``#ifdef _WIN32`` (was ``#ifdef WIN32``, which failed at build time)
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