[Bug 1982583] Re: Fix for zlib CRC32 optimization for s390x

[Frank Heimes]

I transferred the modification into a separate patch (d/p/lp1982583-fix-for-zlib-crc32-optimization-for-s390x.patch),
and build a patched version (for all major architectures) in PPA for jammy and kinetic:
https://launchpad.net/~fheimes/+archive/ubuntu/lp1990379+lp1982583
and attaching here the debdiff for jammy and kinetic - which are for both LP bugs, this LP#1982583 and LP#1990379.

** Attachment added: "lp1990379+lp1982583_debdiffs.tgz"
   https://bugs.launchpad.net/ubuntu/+source/zlib/+bug/1982583/+attachment/5622051/+files/lp1990379+lp1982583_debdiffs.tgz

** Also affects: ubuntu-z-systems
   Importance: Undecided
       Status: New

** Changed in: ubuntu-z-systems
     Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)

** Changed in: zlib (Ubuntu)
   Importance: Undecided => High

** Changed in: ubuntu-z-systems
   Importance: Undecided => High

** Changed in: zlib (Ubuntu)
       Status: New => In Progress

** Changed in: ubuntu-z-systems
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1982583

Title:
  Fix for zlib CRC32 optimization for s390x

Status in Ubuntu on IBM z Systems:
  In Progress
Status in zlib package in Ubuntu:
  In Progress

Bug description:
  'zlib CRC32 optimization for s390x works only in a static library'

  I've discovered two issues in lp1932010-ibm-z-add-vectorized-
  crc32-implementation.patch:

  1) s390_crc32_vx() signature mismatch, resulting in a warning.
  2) -DS390_CRC32_VX is not added to SFLAGS, resulting in vectorization being enabled only in the static library.

  I've attached the updated patch.

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