[Bug 1931857] Re: [21.10 FEAT] Update PCRE2 for JIT and Performance Improvements on s390x

[Graham Inggs]

This upload is currently stuck in -proposed due to an autokpkgtest
failure in mariadb-10.5:

/usr/bin/mysqltest: error while loading shared libraries:
libpcre2-posix.so.2: cannot open shared object file: No such file or
directory

I've found that upstream changed the SONAME from libpcre2-posix.so.2 to
libpcre2-posix.so.3, due to several dropped symbols.  The binary package
libpcre2-posix2 should be renamed to libpcre2-posix3 and reverse-
dependencies hardlink and mariadb-10.5 need to be rebuilt.

I have tested all of this in my PPA and the rebuilt mariadb-10.5's
autopkgtest now pass there.

I'd like an ack from release team before I go ahead and complete this
transition.

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https://bugs.launchpad.net/bugs/1931857

Title:
  [21.10 FEAT] Update PCRE2 for JIT and Performance Improvements on
  s390x

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in pcre2 package in Ubuntu:
  Fix Committed

Bug description:
  PCRE2 version 10.37 as available from https://ftp.pcre.org/pub/pcre/
  contains the enablement of the JIT and provides some performance improvements

  Version 10.38 to be released in November or December 2021 will contain
  the complete implementation with full JIT performance.

  To pick up the changes please configure with "--enable-jit" for s390x.

  It may be beneficial to rebuild certain dependent packages after that
  change, such as haproxy.

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