diff -pruN 2.3.3.4+dfsg-1/debian/changelog 2.3.3.4+dfsg-1ubuntu5/debian/changelog
--- 2.3.3.4+dfsg-1/debian/changelog	2016-12-22 07:40:15.000000000 +0000
+++ 2.3.3.4+dfsg-1ubuntu5/debian/changelog	2022-03-23 09:46:28.000000000 +0000
@@ -1,3 +1,40 @@
+clucene-core (2.3.3.4+dfsg-1ubuntu5) jammy; urgency=medium
+
+  * No-change rebuild for ppc64el baseline bump.
+
+ -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Wed, 23 Mar 2022 10:46:28 +0100
+
+clucene-core (2.3.3.4+dfsg-1ubuntu4) impish; urgency=medium
+
+  * No-change rebuild to build packages with zstd compression.
+
+ -- Matthias Klose <doko@ubuntu.com>  Thu, 07 Oct 2021 12:10:08 +0200
+
+clucene-core (2.3.3.4+dfsg-1ubuntu3) hirsute; urgency=medium
+
+  * Make libclucene-contribs1v5f Conflict/Replace libclucene-contribs1v5
+
+ -- Balint Reczey <rbalint@ubuntu.com>  Wed, 17 Feb 2021 22:11:42 +0100
+
+clucene-core (2.3.3.4+dfsg-1ubuntu2) hirsute; urgency=medium
+
+  * Drop defining float_t as double on s390x, rename packages changing the ABI
+    to use float_t as float instead (LP: #1915927)
+
+ -- Balint Reczey <rbalint@ubuntu.com>  Wed, 17 Feb 2021 19:25:01 +0100
+
+clucene-core (2.3.3.4+dfsg-1ubuntu1) hirsute; urgency=medium
+
+  * Fix float_t abi to double ahead of glibc change.
+
+ -- Dimitri John Ledkov <xnox@ubuntu.com>  Mon, 01 Feb 2021 10:22:06 +0000
+
+clucene-core (2.3.3.4+dfsg-1build1) focal; urgency=medium
+
+  * No-change rebuild for libgcc-s1 package name change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Sat, 21 Mar 2020 13:26:42 +0100
+
 clucene-core (2.3.3.4+dfsg-1) unstable; urgency=medium
 
   * Update debian/copyright: clarify src/test/data/* copyright and
diff -pruN 2.3.3.4+dfsg-1/debian/control 2.3.3.4+dfsg-1ubuntu5/debian/control
--- 2.3.3.4+dfsg-1/debian/control	2016-08-02 09:24:56.000000000 +0000
+++ 2.3.3.4+dfsg-1ubuntu5/debian/control	2021-02-17 21:11:42.000000000 +0000
@@ -1,8 +1,9 @@
 Source: clucene-core
 Priority: optional
-Maintainer: Fathi Boudra <fabo@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Fathi Boudra <fabo@debian.org>
 Uploaders: Daniel Glassey <wdg@debian.org>
-Build-Depends: cmake (>= 2.8.5), debhelper (>= 9), libboost-dev, libz-dev
+Build-Depends: cmake (>= 2.8.5), debhelper (>= 9), libboost-dev, libc6-dev (>> 2.33), libz-dev
 Standards-Version: 3.9.8
 Section: libs
 Homepage: http://clucene.sourceforge.net
@@ -11,9 +12,12 @@ Package: libclucene-dev
 Section: libdevel
 Architecture: any
 Depends: libc6-dev,
-         libclucene-contribs1v5 (= ${binary:Version}),
-         libclucene-core1v5 (= ${binary:Version}),
+         libclucene-contribs1v5 (= ${binary:Version}) [!s390x],
+         libclucene-contribs1v5f (= ${binary:Version}) [s390x],
+         libclucene-core1v5 (= ${binary:Version}) [!s390x],
+         libclucene-core1v5f (= ${binary:Version}) [s390x],
          ${misc:Depends}
+Breaks: libc6-dev (<< 2.33) [s390x]
 Description: library for full-featured text search engine (development)
  CLucene is a C++ port of the popular Apache Lucene search engine
  (http://lucene.apache.org/java). It is released under LGPL or the Apache
@@ -29,7 +33,7 @@ Description: library for full-featured t
  applications that use the CLucene search API.
 
 Package: libclucene-core1v5
-Architecture: any
+Architecture: amd64 arm64 armel armhf hppa i386 m68k mips mipsel mipsn32 mipsn32el mips64 mips64el mipsr6 mipsr6el mipsn32r6 mipsn32r6el mips64r6 mips64r6el nios2 powerpc ppc64 ppc64el riscv64 sparc sparc64 sh3 sh4 x32
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Pre-Depends: ${misc:Pre-Depends}
 Multi-Arch: same
@@ -49,8 +53,29 @@ Description: core library for full-featu
  This package contains the files necessary for running applications that
  use the CLucene core and shared libraries.
 
+Package: libclucene-core1v5f
+Architecture: s390x
+Depends: ${misc:Depends}, ${shlibs:Depends}
+Pre-Depends: ${misc:Pre-Depends}
+Multi-Arch: same
+Conflicts: libclucene-core1, libclucene-core1v5
+Replaces: libclucene-core1, libclucene-core1v5
+Description: core library for full-featured text search engine (runtime)
+ CLucene is a C++ port of the popular Apache Lucene search engine
+ (http://lucene.apache.org/java). It is released under LGPL or the Apache
+ License.
+ .
+ CLucene aims to be a high-speed alternative to Java Lucene, its API is very
+ similar to that of the Java version. CLucene has recently been brought up to
+ date with Lucene 1.4.3. It contains most of the same functionality as the
+ Java version, except for Socket, Threading and the special caching
+ modifications.
+ .
+ This package contains the files necessary for running applications that
+ use the CLucene core and shared libraries.
+
 Package: libclucene-contribs1v5
-Architecture: any
+Architecture: amd64 arm64 armel armhf hppa i386 m68k mips mipsel mipsn32 mipsn32el mips64 mips64el mipsr6 mipsr6el mipsn32r6 mipsn32r6el mips64r6 mips64r6el nios2 powerpc ppc64 ppc64el riscv64 sparc sparc64 sh3 sh4 x32
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Pre-Depends: ${misc:Pre-Depends}
 Multi-Arch: same
@@ -59,6 +84,28 @@ Replaces: libclucene-contribs1
 Description: language specific text analyzers (runtime)
  CLucene is a C++ port of the popular Apache Lucene search engine
  (http://lucene.apache.org/java). It is released under LGPL or the Apache
+ License.
+ .
+ CLucene aims to be a high-speed alternative to Java Lucene, its API is very
+ similar to that of the Java version. CLucene has recently been brought up to
+ date with Lucene 1.4.3. It contains most of the same functionality as the
+ Java version, except for Socket, Threading and the special caching
+ modifications.
+ .
+ This package contains the files necessary for running applications that
+ use the CLucene contribs library (language specific text analyzers for
+ CLucene).
+
+Package: libclucene-contribs1v5f
+Architecture: s390x
+Depends: ${misc:Depends}, ${shlibs:Depends}
+Pre-Depends: ${misc:Pre-Depends}
+Multi-Arch: same
+Conflicts: libclucene-contribs1, libclucene-contribs1v5
+Replaces: libclucene-contribs1, libclucene-contribs1v5
+Description: language specific text analyzers (runtime)
+ CLucene is a C++ port of the popular Apache Lucene search engine
+ (http://lucene.apache.org/java). It is released under LGPL or the Apache
  License.
  .
  CLucene aims to be a high-speed alternative to Java Lucene, its API is very
diff -pruN 2.3.3.4+dfsg-1/debian/libclucene-contribs1v5f.install 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-contribs1v5f.install
--- 2.3.3.4+dfsg-1/debian/libclucene-contribs1v5f.install	1970-01-01 00:00:00.000000000 +0000
+++ 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-contribs1v5f.install	2021-02-17 21:11:42.000000000 +0000
@@ -0,0 +1,2 @@
+usr/lib/*/libclucene-contribs-lib.so.1
+usr/lib/*/libclucene-contribs-lib.so.2.*
diff -pruN 2.3.3.4+dfsg-1/debian/libclucene-contribs1v5f.lintian-overrides 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-contribs1v5f.lintian-overrides
--- 2.3.3.4+dfsg-1/debian/libclucene-contribs1v5f.lintian-overrides	1970-01-01 00:00:00.000000000 +0000
+++ 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-contribs1v5f.lintian-overrides	2021-02-17 21:11:42.000000000 +0000
@@ -0,0 +1 @@
+package-name-doesnt-match-sonames libclucene-contribs-lib1
diff -pruN 2.3.3.4+dfsg-1/debian/libclucene-core1v5f.docs 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-core1v5f.docs
--- 2.3.3.4+dfsg-1/debian/libclucene-core1v5f.docs	1970-01-01 00:00:00.000000000 +0000
+++ 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-core1v5f.docs	2021-02-17 21:11:42.000000000 +0000
@@ -0,0 +1,3 @@
+README
+doc/*.htm
+doc/*.jpg
diff -pruN 2.3.3.4+dfsg-1/debian/libclucene-core1v5f.install 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-core1v5f.install
--- 2.3.3.4+dfsg-1/debian/libclucene-core1v5f.install	1970-01-01 00:00:00.000000000 +0000
+++ 2.3.3.4+dfsg-1ubuntu5/debian/libclucene-core1v5f.install	2021-02-17 21:11:42.000000000 +0000
@@ -0,0 +1,4 @@
+usr/lib/*/libclucene-core.so.1
+usr/lib/*/libclucene-core.so.2.*
+usr/lib/*/libclucene-shared.so.1
+usr/lib/*/libclucene-shared.so.2.*
