diff -Nru ecl-21.2.1+ds/debian/changelog ecl-21.2.1+ds/debian/changelog
--- ecl-21.2.1+ds/debian/changelog	2022-01-15 08:32:24.000000000 +0000
+++ ecl-21.2.1+ds/debian/changelog	2024-03-31 18:10:19.000000000 +0000
@@ -1,3 +1,22 @@
+ecl (21.2.1+ds-4.1ubuntu2) noble; urgency=medium
+
+  * No-change rebuild for CVE-2024-3094
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Sun, 31 Mar 2024 18:10:19 +0000
+
+ecl (21.2.1+ds-4.1ubuntu1) noble; urgency=medium
+
+  * Disable LTO.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Thu, 28 Mar 2024 05:26:54 +0000
+
+ecl (21.2.1+ds-4.1) unstable; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.  Closes: #1062520
+
+ -- Michael Hudson-Doyle <mwhudson@debian.org>  Wed, 28 Feb 2024 02:42:24 +0000
+
 ecl (21.2.1+ds-4) unstable; urgency=medium
 
   * Add dependency on libecl-dev to ecl.
diff -Nru ecl-21.2.1+ds/debian/control ecl-21.2.1+ds/debian/control
--- ecl-21.2.1+ds/debian/control	2022-01-15 08:32:14.000000000 +0000
+++ ecl-21.2.1+ds/debian/control	2024-03-28 05:26:54.000000000 +0000
@@ -1,11 +1,12 @@
 Source: ecl
 Section: lisp
 Priority: optional
-Maintainer: Debian Common Lisp Team <debian-common-lisp@lists.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian Common Lisp Team <debian-common-lisp@lists.debian.org>
 Uploaders: Peter Van Eynde <pvaneynd@debian.org>,
  Christoph Egger <christoph@debian.org>,
  Tobias Hansen <thansen@debian.org>
-Build-Depends:
+Build-Depends: dpkg-dev (>= 1.22.5),
  debhelper-compat (= 12),
  libgmp-dev,
  file,
@@ -27,7 +28,7 @@
 Package: ecl
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends},
- libecl21.2 (= ${binary:Version}), libecl-dev (= ${binary:Version}),
+ libecl21.2t64 (= ${binary:Version}), libecl-dev (= ${binary:Version}),
  libffi-dev, libgmp-dev, libncurses5-dev, libgc-dev, libatomic-ops-dev, gcc
 Provides: lisp-compiler
 Suggests: slime, ecl-doc
@@ -50,13 +51,14 @@
   * A simple conservative mark & sweep garbage collector.
   * The Boehm-Weiser garbage collector.
 
-Package: libecl21.2
+Package: libecl21.2t64
+Provides: ${t64:Provides}
 Section: libs
 Architecture: any
 Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}
-Breaks: ecl (<< 21.2.1+ds-2)
-Replaces: ecl (<< 21.2.1+ds-2)
+Breaks: libecl21.2 (<< ${source:Version}), ecl (<< 21.2.1+ds-2)
+Replaces: libecl21.2, ecl (<< 21.2.1+ds-2)
 Description: Embeddable Common-Lisp: shared library
  ECL stands for Embeddable Common-Lisp. The ECL project is an
  effort to modernize Giuseppe Attardi's ECL environment to
@@ -82,7 +84,7 @@
 Section: libdevel
 Architecture: any
 Multi-Arch: same
-Depends: ${misc:Depends}, libecl21.2 (= ${binary:Version})
+Depends: ${misc:Depends}, libecl21.2t64 (= ${binary:Version})
 Breaks: ecl (<< 21.2.1+ds-2)
 Replaces: ecl (<< 21.2.1+ds-2)
 Description: Embeddable Common-Lisp: development files
diff -Nru ecl-21.2.1+ds/debian/libecl21.2.install ecl-21.2.1+ds/debian/libecl21.2.install
--- ecl-21.2.1+ds/debian/libecl21.2.install	2022-01-14 19:52:16.000000000 +0000
+++ ecl-21.2.1+ds/debian/libecl21.2.install	1970-01-01 00:00:00.000000000 +0000
@@ -1,5 +0,0 @@
-/usr/lib/*/libecl.so.*
-/usr/lib/*/ecl-*/*.asd
-/usr/lib/*/ecl-*/*.fas
-/usr/lib/*/ecl-*/help.doc
-/usr/lib/*/ecl-*/encodings
diff -Nru ecl-21.2.1+ds/debian/libecl21.2.lintian-overrides ecl-21.2.1+ds/debian/libecl21.2.lintian-overrides
--- ecl-21.2.1+ds/debian/libecl21.2.lintian-overrides	2021-12-12 11:01:41.000000000 +0000
+++ ecl-21.2.1+ds/debian/libecl21.2.lintian-overrides	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-libecl21.2: library-not-linked-against-libc */sb-bsd-sockets.fas
diff -Nru ecl-21.2.1+ds/debian/libecl21.2t64.install ecl-21.2.1+ds/debian/libecl21.2t64.install
--- ecl-21.2.1+ds/debian/libecl21.2t64.install	1970-01-01 00:00:00.000000000 +0000
+++ ecl-21.2.1+ds/debian/libecl21.2t64.install	2022-01-14 19:52:16.000000000 +0000
@@ -0,0 +1,5 @@
+/usr/lib/*/libecl.so.*
+/usr/lib/*/ecl-*/*.asd
+/usr/lib/*/ecl-*/*.fas
+/usr/lib/*/ecl-*/help.doc
+/usr/lib/*/ecl-*/encodings
diff -Nru ecl-21.2.1+ds/debian/libecl21.2t64.lintian-overrides ecl-21.2.1+ds/debian/libecl21.2t64.lintian-overrides
--- ecl-21.2.1+ds/debian/libecl21.2t64.lintian-overrides	1970-01-01 00:00:00.000000000 +0000
+++ ecl-21.2.1+ds/debian/libecl21.2t64.lintian-overrides	2024-02-28 02:42:15.000000000 +0000
@@ -0,0 +1,2 @@
+libecl21.2t64: library-not-linked-against-libc */sb-bsd-sockets.fas
+libecl21.2t64: package-name-doesnt-match-sonames libecl21.2
diff -Nru ecl-21.2.1+ds/debian/rules ecl-21.2.1+ds/debian/rules
--- ecl-21.2.1+ds/debian/rules	2021-12-04 19:51:55.000000000 +0000
+++ ecl-21.2.1+ds/debian/rules	2024-03-28 05:26:54.000000000 +0000
@@ -3,6 +3,8 @@
 # Uncomment this to turn on verbose mode.
 #export DH_VERBOSE=1
 
+export DEB_BUILD_MAINT_OPTIONS=optimize=-lto
+
 %:
 	dh $@