buildroot

config BR2_PACKAGE_XZ

    bool "xz-utils"

    help

      XZ is the successor to the Lempel-Ziv/Markov-chain Algorithm

      compression format, which provides memory-hungry but powerful

      compression (often better than bzip2) and fast, easy decompression.

​

      This package provides the command line tools for working with XZ

      compression, including xz, unxz, xzcat, xzgrep, and so on. They can

      also handle the older LZMA format, and if invoked via appropriate

      symlinks will emulate the behavior of the commands in the lzma

      package.

​

      http://tukaani.org/xz/