Starting with YACReader 9.0.0 all versions of YACReader can use (lib)unarr >= 1.0.1 as decompression backend. For Windows and MacOSX precompiled libraries are available in the dependencies folder (not included in the source tarballs!). For all other operating systems or users who wish to compile unarr themselves, source code and build instructions are available at https://github.com/selmf/unarr/ For best performance it is recommended to build and install unarr as a shared library. Users who prefer an embedded build can also download a snapshot from https://github.com/selmf/unarr/archive/master.zip and extract it in this folder. The build system will then detect the presence of the source code and include it in the build process. However, as the embedded build option uses different compiler flags and does not include any options to detect and make use of libraries like zlib, bzip2 or lzma embedded builds will have slower extraction speed and won't support zip files with bzip2 or xz compression.