From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7691 invoked by alias); 16 Mar 2009 03:30:04 -0000 Received: (qmail 28362 invoked by uid 22791); 16 Mar 2009 03:22:44 -0000 X-SWARE-Spam-Status: No, hits=-3.4 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_LOW,SARE_SUB_OBFU_Z,SPF_PASS X-Spam-Check-By: sourceware.org From: Charles Wilson Date: Mon, 16 Mar 2009 03:30:00 -0000 Subject: [1.7] New: {xz/liblzma0/liblzma-devel}-4.999.8beta-10 To: cygwin-announce@cygwin.com Message-Id: <20090316032236.EE1582C639@heartbeat2.messagingengine.com> Mailing-List: contact cygwin-announce-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-announce-owner@cygwin.com Reply-To: The Cygwin Mailing List Mail-Followup-To: cygwin-announce@cygwin.com X-SW-Source: 2009-03/txt/msg00055.txt.bz2 The xz package is the successor to lzma. Its command-line tools support both .lzma files and the new .xz format, and it ships with compatibility links so you don't even need to retrain your fingers: 'lzma', 'lzcat', etc, are all still present. However, you probably should: .xz files are already being used by some upstream source distribution sites, including GNU FSF, and the new format includes features (such as internal integrity checks) that the old .lzma format lacks. The xz package provides a new runtime library: liblzma supports encoding as well as decoding, both .lzma and .xz streams. The older liblzmadec library supported decoding .lzma streams only. Notes about stability: ====================== >From the package README: This is a beta version. The .xz file format is now stable though, which means that files created with the beta version will be uncompressible with all future XZ Utils versions too (assuming that there are no catastrophical bugs). liblzma API is pretty stable now, although minor tweaks may still be done if really needed. The ABI is not stable yet. The major soname will be bumped right before the first stable release. Probably it will be bumped to something like .so.5.0.0 because some distributions using the alpha versions already had to use other versions than .so.0.0.0. For cygwin, this means that the current DLL number "0" will be changed to "5" (or whatever major soname upstream decides on) when xz-5.0 is released. This gives us plenty of room (1-4) for other DLL number changes between now and that release for any issues that pop up (esp. related to the gcc4 switch?) The final 5.0 release is expected relatively soon. However, I wanted cygwin to begin supporting the new (now stable) .xz file format as soon as possible -- and "soon" sounds dangerously close to the (laughable and always wrong) "Real Soon Now". [[ compiled using gcc-3.4.4-999 ]] This package differs from the simultaneously-released xz-4.999.8beta-1 package for cygwin-1.5 in only trivial ways: the README references cygport-0.9.5 and cygwin-1.7.0-43, and the /usr/share/doc/ layout is influenced by the cygport changes between 0.4.x and 0.9.x. CHANGES (since lzma-4.32.7-2) ======================== o Fork for cygwin-1.7 development o New upstream source package: xz o Now supports new .xz file format as well as .lzma format o New liblzma library supports encoding as well as decoding, and both .lzma and .xz formats o Tools now have many more options, and support multiple (internal) compression algorithms in addition to LZMA, when creating/reading .xz format files. o CRC32, CRC64, and SHA256 integrity checking of .xz files -- Charles Wilson volunteer lzma/xz maintainer for cygwin ==================================================================== To update your installation, click on the "Install Cygwin now" link on the http://cygwin.com/ web page. This downloads setup.exe to your system. Then, run setup and answer all of the questions. *** CYGWIN-ANNOUNCE UNSUBSCRIBE INFO *** If you want to unsubscribe from the cygwin-announce mailing list, look at the "List-Unsubscribe: " tag in the email header of this message. Send email to the address specified there. It will be in the format: cygwin-announce-unsubscribe-you=yourdomain.com@cygwin.com If you need more information on unsubscribing, start reading here: http://sources.redhat.com/lists.html#unsubscribe-simple Please read *all* of the information on unsubscribing that is available starting at this URL.