Message-Id:	<202205161717.24GHHdp5022045@delorie.com>
Date:	Mon, 16 May 2022 19:01:52 +0200
From:	"Juan Manuel Guerrero (juan DOT guerrero AT gmx DOT de) [via djgpp-announce AT delorie DOT com]" <djgpp-announce AT delorie DOT com>
To:	djgpp-announce AT delorie DOT com
Subject:	ANNOUNCE: DJGPP port of zlib 1.2.12 uploaded.
Reply-To:	djgpp AT delorie DOT com

This is a port of zlib 1.2.12 to MSDOS/DJGPP.


  zlib 1.2.12 is a free, general purpose data compression/decompression
  library as used in gzip.  All the code is thread safe.


  DJGPP specific changes.
  =======================

  There are no DJGPP specific changes.  Only the usual configuration
  files have been added.  They are located in the /djgpp directory.

  The port has been configured and compiled on WinXP SP3 and Win98SE.
  There is no guarantee that this may be possible with any other
  DOS-like OS.  Due to the use of long file names it will not be
  possible to configure and compile without LFN support.  The port has
  been compiled using gcc346 and bnu2351b.

  The port has been tested by using it.  I have used them only on WinXP.
  It has worked flawlessly.  I do not konw if this will ever be the
  case on FreeDOS.  I have never used/tested them in that environment.

  To be able to build this port you may need to have LFN support.

  As usual, all djgpp specific files (diffs, README files, etc.) are
  stored in the /djgpp directory.  The sources have been configured to
  be build in the 0build directory.  If for some reason it does not
  work for you, delete its contents and configure from scratch again.

  For further information about zlib please read the docs and
  NEWS file.


  Here is an extract of the home page showing the user visible changes
  from the last port (zlib 1.2.11) to this one:

-------------------------------------------------------------------------------

Version 1.2.12 has these key improvements over 1.2.11:

    Fix a deflate bug when using the Z_FIXED strategy that can result
    in out-of-bound accesses. Fix a deflate bug when the window is full
    in deflate_stored(). Speed up CRC-32 computations by a factor of
    1.5 to 3. Use the hardware CRC-32 instruction on ARMv8 processors.
    Speed up crc32_combine() with powers of x tables.
    Add crc32_combine_gen() and crc32_combine_op() for fast combines.

Due to the bug fixes, any installations of 1.2.11 should be replaced
with 1.2.12.


-------------------------------------------------------------------------------




  The port consists of the usual two packages that have been produced
  using djdev205 (CVS repository code) and can be downloaded from
  ftp.delorie.com and mirrors as (time stamp 2022-04-18):


    zlib 1.2.12 headers, libs and man format documentation:
    ftp://ftp.delorie.com/pub/djgpp/current/v2tk/zlb1212b.zip

    zlib 1.2.12 source:
    ftp://ftp.delorie.com/pub/djgpp/current/v2tk/zlb1212s.zip



  Send zlib specific bug reports to <zlib AT gzip DOT org>.
  Send suggestions and bug reports concerning the DJGPP port to
  comp.os.msdos.djgpp or <djgpp AT delorie DOT com>.


Enjoy.

    Guerrero, Juan Manuel <juan DOT guerrero AT gmx DOT de>

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