[Zlib-devel] zlib 1.2.1 released!

[Cosmin Truta]

On Fri, 21 Nov 2003, Gilles Vollant wrote:

> I replaced http://www.winimage.com/zLibDll/zlib121.zip by your version
> of zipfile

Okay.
I made another one, though. It's at the same location:

  http://www.cs.toronto.edu/~cosmin/pngtech/zlib/zlib121.zip

MD5 sum:
  d71bdc0736afdc70fc8056de4b5df5e6  zlib121.zip


The difference is that I used a custom build of zip under Unix, in which
the storing of GID/UID was compiled out. I saved about 2KBytes. The
archive has now 412204 bytes. Notwithstanding the absence of GID/UID,
the archive is identical to the old one.

Perhaps I could have done even more: modify the zip source code, to
store only the modification (universal) time, but not the "last access"
time. I though, however, that this kind of quick surgery would have been
too risky. I might consider submitting a patch to Info-ZIP, though.

N.B.: I had to use a Unix version of zip, because that one stores the
Unix attributes. It's necessary to store the "executable" attribute of
the "configure" file.


> I made again http://www.winimage.com/zLibDll/build_dll_zlib121.zip
> with the .EXP file

Thanks. I had supplied an .EXP file myself already in the ready-to-eat
distribution (binaries + headers + docs) available at:

  http://www.cs.toronto.edu/~cosmin/pngtech/zlib/zlib121-dll.zip

by the time when I did the initial posting. Here is its MD5 sum:

  db599409ae2f84441ebd052979568c99  zlib121-dll.zip


I understood from the private discussions with Chris and Mark that the
official DLL release will NOT be ASM-enabled.

>From the deflation point of view I don't see it at all as a problem,
because my tests with VC6 showed no real difference between the C and
the ASM version, and I expect (though I had no time to test) that the
C code compiled with VC7.1 can be even better.

>From the inflation point of view, there is some visible difference due
to the use of MMX, and it's too bad that we lose it, but at least we
should be happy that we have a C inflate that's faster than that of
zlib-1.1.4.


Best regards,
Cosmin