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@@ -2,6 +2,66 @@ XZ Utils Release Notes ====================== +5.5.2beta (2024-02-14) + + * Licensing change: The core components are now under the + BSD Zero Clause License (0BSD). In XZ Utils 5.4.6 and older + and 5.5.1alpha these components are in the public domain and + obviously remain so; the change affects the new releases only. + + 0BSD is an extremely permissive license which doesn't require + retaining or reproducing copyright or license notices when + distributing the code, thus in practice there is extremely + little difference to public domain. + + * liblzma + + - Significant speed optimizations to the LZMA decoder were + made. There are now three variants that can be chosen at + build time: + + * Basic C version: This is a few percent faster than + 5.4.x due to some new optimizations. + + * Branchless C: This is currently the default on platforms + for which there is no assembly code. This should be a few + percent faster than the basic C version. + + * x86-64 inline assembly. This works with GCC and Clang. + + The default choice can currently be overriden by setting + LZMA_RANGE_DECODER_CONFIG in CPPFLAGS: 0 means the basic + version and 3 means that branchless C version. + + - Optimized the CRC32 calculation on ARM64 platforms using the + CRC32 instructions. The instructions are optional in ARMv8.0 + and are required in ARMv8.1 and later. 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 lz4 support to xzdiff/xzcmp and xzgrep. + + * Man pages of xzdiff/xzcmp, xzgrep, and xzmore were rewritten + to simplify licensing of the man page translations. + + * Translations: + + - Updated Chinese (simplified), German, Korean, Polish, + Romanian, Spanish, Swedish, and Ukrainian translations. + + - Updated German, Korean, Romanian, and Ukrainian man page + translations. + + * Small improvements to the tests. + + * Removed the macos/build.sh script. It had not been updated + since 2013. + + * Removed doc/examples_old. These were from 2012. + + 5.5.1alpha (2024-01-26) * Added a new filter for RISC-V binaries. The filter can be used |