diff -Nru debug-me-1.20221231/debian/changelog debug-me-1.20221231/debian/changelog
--- debug-me-1.20221231/debian/changelog	2023-07-04 17:38:00.000000000 +0200
+++ debug-me-1.20221231/debian/changelog	2023-09-18 15:51:21.000000000 +0200
@@ -1,3 +1,9 @@
+debug-me (1.20221231-1ubuntu1) mantic; urgency=medium
+
+  * Disable LTO on the ppc64el architecture (LP: #2033639)
+
+ -- Heinrich Schuchardt <heinrich.schuchardt@canonical.com>  Mon, 18 Sep 2023 15:51:21 +0200
+
 debug-me (1.20221231-1) unstable; urgency=medium
 
   * New upstream release.
diff -Nru debug-me-1.20221231/debian/control debug-me-1.20221231/debian/control
--- debug-me-1.20221231/debian/control	2023-07-04 17:38:00.000000000 +0200
+++ debug-me-1.20221231/debian/control	2023-09-18 15:51:21.000000000 +0200
@@ -1,5 +1,6 @@
 Source: debug-me
-Maintainer: Sean Whitton <spwhitton@spwhitton.name>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Sean Whitton <spwhitton@spwhitton.name>
 Priority: optional
 Section: net
 Build-Depends: debhelper (>= 10),
diff -Nru debug-me-1.20221231/debian/rules debug-me-1.20221231/debian/rules
--- debug-me-1.20221231/debian/rules	2023-07-04 17:38:00.000000000 +0200
+++ debug-me-1.20221231/debian/rules	2023-09-18 15:51:21.000000000 +0200
@@ -1,9 +1,18 @@
 #!/usr/bin/make -f
 
+DPKG_EXPORT_BUILDFLAGS := 1
+include /usr/share/dpkg/architecture.mk
+
 # Debian's ghc cannot compile anything with -fPIC at present, so we
 # have to disable PIE hardening to avoid build failures on archs like
 # amd64.  See discussion on debian-haskell@lists.debian.org
-export DEB_BUILD_MAINT_OPTIONS = hardening=+all,-pie
+DEB_BUILD_MAINT_OPTIONS = hardening=+all,-pie
+
+# Building with LTO failed on ppc64el (LP: #2033639)
+ifeq ("$(DEB_BUILD_ARCH)", "ppc64el")
+	DEB_BUILD_MAINT_OPTIONS += optimize=-lto
+endif
+export DEB_BUILD_MAINT_OPTIONS
 
 # cabal likes to write to $HOME, so use Setup.hs directly
 export BUILDER = ./Setup