xz-utils 5.1.1alpha+20120614-1 source package in Ubuntu


xz-utils (5.1.1alpha+20120614-1) unstable; urgency=low

  * New snapshot, taken from upstream commit f1675f76.
    - liblzma: BCJ filters would return a spurious LZMA_BUF_ERROR
      result in certain circumstances.  As a result, the xz tool
      could produce inappropriate "Compressed data is corrupt" or
      "Unexpected end of input" failures (reported in XZ Embedded as
      Fedora bug 735408).
    - "xz -v -v --list" prints the minimal XZ Utils version needed
      to decompress a stream.
    - "xz --robot -v --list" formats filenames more plainly.
    - xzgrep does not fail unconditionally when the decompressor
      dies with SIGPIPE due to unconsumed output any more.  This
      makes the exit status from commands such as "xzgrep -q" and
      "xzgrep -l" more predictable and convenient for scripts.
    - examples/xz_pipe_decomp.c did not check correctly for
      truncated input.
    - There is a new set of sample programs.  The old ones have
      been renamed to examples_old but are still maintained.
  * liblzma:
    - If dlopen() indicates that liblzma.so.2 is loaded, check fewer
      reserved fields in the stream argument to the lzma_code()
      function.  This prevents out-of-bounds reads when liblzma5
      functions are called by code built against liblzma2 (see
    - Remove the lzma_code@Base compatibility symbol.
      Closes: #649522.  Thanks to Eduard Bloch.
    - Install run-time library to /lib so it can be used before /usr
      is mounted.  Closes: #672120.
    - Configure with --disable-threads for now to avoid needlessly
      linking to libpthread and librt.
  * liblzma-dev:
    - Install an appropriate library for static linking instead of
      the decompression-only version used to build xzdec.
      Closes: #673001.  Thanks to Anton Tolchanov.
    - Use the liblzma2-compatible version of lzma_code() in the
      static library.
    - Multi-Arch: same.  Thanks to Riku Voipio.
    - Install new examples and revised old examples to
  * xz-utils:
    - Use update-alternatives to provide lzma, unlzma, lzcat, and
      the rest of the lz* scripts without conflicting with the lzma
    - Conflicts: lzma versions before before 9.22-1, when it started
      providing lzma, unlzma, and lzcat through the alternatives
    - Conflicts: and Replaces: xz-lzma.
    - README.Debian: Update instructions on configuring the package
      to provide lzma compatibility commands.
  * Remove xz-lzma package.
  * Use dpkg-buildflags to retrieve compiler flags, including
    hardening options.  Build-Depends: dpkg-dev (>= 1.16.1).
    Closes: #653739.
  * debian/rules:
    - build-arch: Simplify by using a double-colon rule instead of a
      dependency on a dummy noop target.
    - build-indep: Assume doxygen is available, instead of trying to
      get by by assuming the caller meant to invoke build-arch when
      it is missing.  Build-Depends: dpkg-dev (>= 1.16.2).
    - Rearrange for clarity.
  * debian/symbols: Bump the minimal version for lzma_code(),
    lzma_raw_buffer_decode(), and lzma_raw_buffer_encode().
  * Use machine-readable copyright-format 1.0.
  * Update copyright file.
  * Standards-Version: 3.9.3 (checked).
  * debian/changelog.upstream.sh: Use ‘git rev-list | git diff-tree’
    instead of ‘git log’ to avoid depending on the build system’s

 -- Jonathan Nieder <email address hidden>  Sat, 16 Jun 2012 15:03:17 -0500

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Jonathan Nieder on 2012-06-18
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File Size MD5 Checksum
xz-utils_5.1.1alpha+20120614-1.dsc 2.3 KiB 5e7cdb519cc364d9c2e82c0b8bb8d34b
xz-utils_5.1.1alpha+20120614.orig.tar.gz 543.4 KiB 4827c3ea0638c6a3e8bafb77793fdc98
xz-utils_5.1.1alpha+20120614-1.debian.tar.gz 148.9 KiB a7e2b72bb03cbfaf4d5cc13c88fcc5f7

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liblzma5: XZ-format compression library

 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.
 The native format of liblzma is XZ; it also supports raw (headerless)
 streams and the older LZMA format used by lzma. (For 7-Zip's related
 format, use the p7zip package instead.)

xz-utils: XZ-format compression utilities

 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
 The XZ format is similar to the older LZMA format but includes some
 improvements for general use:
  * 'file' magic for detecting XZ files;
  * crc64 data integrity check;
  * limited random-access reading support;
  * improved support for multithreading (not used in xz-utils);
  * support for flushing the encoder.

xzdec: XZ-format compression utilities - tiny decompressors

 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 xzdec and lzmadec utilities, which write
 the decompressed version of a compressed file to standard output. The
 binaries are very small, so they can be easily stored on small media
 with some compressed files, and they are linked statically against
 liblzma so they can be used on machines without a compatible version
 of liblzma installed. However, they have:
   * no compression support;
   * no support for writing to a file other than standard output;
   * no translated messages;
   * been optimized for size rather than speed.
 For a full-featured xzcat command without these limitations, use
 the xz-utils package instead.