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| -rw-r--r-- | NEWS | 143 |
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@@ -2,6 +2,149 @@ XZ Utils Release Notes ====================== +5.6.0 (2024-02-24) + + This bumps the minor version of liblzma because new features were + added. The API and ABI are still backward compatible with liblzma + 5.4.x and 5.2.x and 5.0.x. + + NOTE: As described in the NEWS for 5.5.2beta, the core components + are now under the BSD Zero Clause License (0BSD). + + Since 5.5.2beta: + + * liblzma: + + - Disabled the branchless C variant in the LZMA decoder based + on the benchmark results from the community. + + - Disabled x86-64 inline assembly on x32 to fix the build. + + * Sandboxing support in xz: + + - Landlock is now used even when xz needs to create files. + In this case the sandbox is has to be more permissive than + when no files need to be created. A similar thing was + already in use with pledge(2) since 5.3.4alpha. + + - Landlock and pledge(2) are now stricter when reading from + more than one input file and only writing to standard output. + + - Added support for Landlock ABI version 4. + + * CMake: + + - Default to -O2 instead of -O3 with CMAKE_BUILD_TYPE=Release. + -O3 is not useful for speed and makes the code larger. + + - Now builds lzmainfo and lzmadec. + + - xzdiff, xzgrep, xzless, xzmore, and their symlinks are now + installed. The scripts are also tested during "make test". + + - Added translation support for xz, lzmainfo, and the + man pages. + + - Applied the symbol versioning workaround for MicroBlaze that + is used in the Autotools build. + + - The general XZ Utils and liblzma API documentation is now + installed. + + - The CMake component names were changed a little and several + were added. liblzma_Runtime and liblzma_Development are + unchanged. + + - Minimum required CMake version is now 3.14. However, + translation support is disabled with CMake versions + older than 3.20. + + - The CMake-based build is now close to feature parity with the + Autotools-based build. Most importantly a few tests aren't + run yet. Testing the CMake-based build on different operating + systems would be welcome now. See the comment at the top of + CMakeLists.txt. + + * Fixed a bug in the Autotools feature test for ARM64 CRC32 + instruction support for old versions of Clang. This did not + affect the CMake build. + + * Windows: + + - The build instructions in INSTALL and windows/INSTALL*.txt + were revised completely. + + - windows/build-with-cmake.bat along with the instructions + in windows/INSTALL-MinGW-w64_with_CMake.txt should make + it very easy to build liblzma.dll and xz.exe on Windows + using CMake and MinGW-w64 with either GCC or Clang/LLVM. + + - windows/build.bash was updated. It now works on MSYS2 and + on GNU/Linux (cross-compiling) to create a .zip and .7z + package for 32-bit and 64-bit x86 using GCC + MinGW-w64. + + * The TODO file is no longer installed as part of the + documentation. The file is out of date and does not reflect + the actual tasks that will be completed in the future. + + * Translations: + + - Translated lzmainfo man pages are now installed. These + had been forgotten in earlier versions. + + - Updated Croatian, Esperanto, German, Hungarian, Korean, + Polish, Romanian, Spanish, Swedish, Vietnamese, and Ukrainian + translations. + + - Updated German, Korean, Romanian, and Ukrainian man page + translations. + + * Added a few tests. + + Summary of new features added in the 5.5.x development releases: + + * liblzma: + + - LZMA decoder: Speed optimizations to the C code and + added GCC & Clang compatible inline assembly for x86-64. + + - Added lzma_mt_block_size() to recommend a Block size for + multithreaded encoding. + + - Added CLMUL-based CRC32 on x86-64 and E2K with runtime + processor detection. Similar to CRC64, on 32-bit x86 it + isn't available unless --disable-assembler is used. + + - Optimized the CRC32 calculation on ARM64 platforms using the + CRC32 instructions. Runtime detection for the instruction is + used on GNU/Linux, FreeBSD, Windows, and macOS. If the + compiler flags indicate unconditional CRC32 instruction + support (+crc) then the generic version is not built. + + - Added definitions of mask values like + LZMA_INDEX_CHECK_MASK_CRC32 to <lzma/index.h>. + + * xz: + + - Multithreaded mode is now the default. This improves + compression speed and creates .xz files that can be + decompressed in multithreaded mode. The downsides are + increased memory usage and slightly worse compression ratio. + + - Added a new command line option --filters to set the filter + chain using the liblzma filter string syntax. + + - Added new command line options --filters1 ... --filters9 to + set additional filter chains using the liblzma filter string + syntax. The --block-list option now allows specifying filter + chains that were set using these new options. + + - Ported the command line tools to Windows MSVC. + Visual Studio 2015 or later is required. + + * Added lz4 support to xzdiff/xzcmp and xzgrep. + + 5.5.2beta (2024-02-14) * Licensing change: The core components are now under the |