diff -pruN 5.8.0-1/debian/changelog 5.8.0-1ubuntu1/debian/changelog
--- 5.8.0-1/debian/changelog	2025-10-24 02:16:18.000000000 +0000
+++ 5.8.0-1ubuntu1/debian/changelog	2025-10-24 08:01:59.000000000 +0000
@@ -1,9 +1,23 @@
+libqalculate (5.8.0-1ubuntu1) resolute; urgency=medium
+
+  * Merge from Debian Unstable. Remaining changes:
+    - Build with -O2 on ppc64el to avoid test failures.
+
+ -- Rik Mills <rikmills@kde.org>  Fri, 24 Oct 2025 09:01:59 +0100
+
 libqalculate (5.8.0-1) unstable; urgency=medium
 
   * New upstream release.
 
  -- James Lu <jlu@debian.org>  Thu, 23 Oct 2025 19:16:18 -0700
 
+libqalculate (5.7.0-1ubuntu1) resolute; urgency=medium
+
+  * Merge from Debian Unstable. Remaining changes:
+    - Build with -O2 on ppc64el to avoid test failures.
+
+ -- Rik Mills <rikmills@kde.org>  Thu, 23 Oct 2025 14:21:52 +0100
+
 libqalculate (5.7.0-1) unstable; urgency=medium
 
   * New upstream release.
@@ -11,6 +25,18 @@ libqalculate (5.7.0-1) unstable; urgency
 
  -- James Lu <jlu@debian.org>  Sat, 23 Aug 2025 17:32:49 -0700
 
+libqalculate (5.5.2-1ubuntu1) questing; urgency=medium
+
+  * Build with -O2 on ppc64el to avoid test failures.
+
+ -- Matthias Klose <doko@ubuntu.com>  Wed, 28 May 2025 12:43:20 +0200
+
+libqalculate (5.5.2-1build1) questing; urgency=medium
+
+  * No-change rebuild for libxml2 soname change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Wed, 21 May 2025 08:15:39 +0200
+
 libqalculate (5.5.2-1) unstable; urgency=medium
 
   * New upstream release.
diff -pruN 5.8.0-1/debian/control 5.8.0-1ubuntu1/debian/control
--- 5.8.0-1/debian/control	2025-08-24 00:27:03.000000000 +0000
+++ 5.8.0-1ubuntu1/debian/control	2025-10-24 08:01:07.000000000 +0000
@@ -1,7 +1,8 @@
 Source: libqalculate
 Section: math
 Priority: optional
-Maintainer: Qalculate Team <team+qalculate@tracker.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Qalculate Team <team+qalculate@tracker.debian.org>
 Uploaders:
  James Lu <jlu@debian.org>,
  Phil Morrell <debian@emorrp1.name>,
diff -pruN 5.8.0-1/debian/rules 5.8.0-1ubuntu1/debian/rules
--- 5.8.0-1/debian/rules	2024-12-31 21:11:36.000000000 +0000
+++ 5.8.0-1ubuntu1/debian/rules	2025-10-24 08:01:00.000000000 +0000
@@ -2,6 +2,14 @@
 
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all reproducible=+fixfilepath
 DPKG_EXPORT_BUILDFLAGS = 1
+
+ifeq ($(DEB_HOST_ARCH),ppc64el)
+  export DEB_CFLAGS_MAINT_STRIP = -O3
+  export DEB_CXXFLAGS_MAINT_STRIP = -O3
+  export DEB_CFLAGS_MAINT_APPEND = -O2
+  export DEB_CXXFLAGS_MAINT_APPEND = -O2
+endif
+
 include /usr/share/dpkg/buildflags.mk
 
 export CXXFLAGS_FOR_BUILD=$(CXXFLAGS)