This is the first release made under the 0BSD license. Please let us know if there are any concerns about the license change. We are looking forward to releasing 5.6.0 later this month!
XZ Utils 5.5.2beta is available at <https://xz.tukaani.org/xz-utils/>. Here is an extract from the NEWS file: 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. * Added doc/examples/11_file_info.c. It was added to the Git repository in 2017 but forgotten to be added into distribution tarballs. * Removed doc/examples_old. These were from 2012. * Removed the macos/build.sh script. It had not been updated since 2013. --- Jia Tan
