Bug#1062244: libccrtp: NMU diff for 64-bit time_t transition

[Steve Langasek]

Source: libccrtp
Version: 2.0.9-2.4
Severity: serious
Tags: patch pending
Justification: library ABI skew on upgrade
User: debian-arm at lists.debian.org
Usertags: time-t

Dear maintainer,

As part of the 64-bit time_t transition required to support 32-bit
architectures in 2038 and beyond
(https://wiki.debian.org/ReleaseGoals/64bit-time), we have identified
libccrtp as a source package shipping runtime libraries whose ABI
either is affected by the change in size of time_t, or could not be
analyzed via abi-compliance-checker (and therefore to be on the safe
side we assume is affected).

To ensure that inconsistent combinations of libraries with their
reverse-dependencies are never installed together, it is necessary to
have a library transition, which is most easily done by renaming the
runtime library package.

Since turning on 64-bit time_t is being handled centrally through a change
to the default dpkg-buildflags (https://bugs.debian.org/1037136), it is
important that libraries affected by this ABI change all be uploaded close
together in time.  Therefore I have prepared a 0-day NMU for libccrtp
which will initially be uploaded to experimental if possible, then to
unstable after packages have cleared binary NEW.

Please find the patch for this NMU attached.

If you have any concerns about this patch, please reach out ASAP.  Although
this package will be uploaded to experimental immediately, there will be a
period of several days before we begin uploads to unstable; so if information
becomes available that your package should not be included in the transition,
there is time for us to amend the planned uploads.



-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.5.0-14-generic (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
-------------- next part --------------
diff -Nru libccrtp-2.0.9/debian/changelog libccrtp-2.0.9/debian/changelog
--- libccrtp-2.0.9/debian/changelog	2023-12-05 22:11:43.000000000 +0000
+++ libccrtp-2.0.9/debian/changelog	2024-01-31 20:12:52.000000000 +0000
@@ -1,3 +1,10 @@
+libccrtp (2.0.9-2.5) experimental; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.
+
+ -- Steve Langasek <vorlon at debian.org>  Wed, 31 Jan 2024 20:12:52 +0000
+
 libccrtp (2.0.9-2.4) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -Nru libccrtp-2.0.9/debian/control libccrtp-2.0.9/debian/control
--- libccrtp-2.0.9/debian/control	2023-12-05 22:11:43.000000000 +0000
+++ libccrtp-2.0.9/debian/control	2024-01-31 20:12:51.000000000 +0000
@@ -13,7 +13,7 @@
 Package: libccrtp-dev
 Section: libdevel
 Architecture: any
-Depends: ${misc:Depends}, libccrtp2v5 (= ${binary:Version}),
+Depends: ${misc:Depends}, libccrtp2t64 (= ${binary:Version}),
  libc6-dev, libucommon-dev, pkg-config
 Description: Common C++ class framework for RTP packets - development files
  GNU ccRTP is a GNU Common C++ based high performance RTP stack. RTP is
@@ -42,14 +42,17 @@
  streaming with different underlying transport protocols, not just
  with IPV4 UDP sockets. 
 
-Package: libccrtp2v5
+Package: libccrtp2t64
+Provides: ${t64:Provides}
+X-Time64-Compat: libccrtp2v5
+Breaks: libccrtp2v5 (<< ${source:Version})
 Section: libs
 Architecture: any
 Pre-Depends: ${misc:Pre-Depends}
 Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Conflicts: libccrtp2
-Replaces: libccrtp2
+Replaces: libccrtp2v5, libccrtp2
 Description: Common C++ class framework for RTP packets
  GNU ccRTP is a GNU Common C++ based high performance RTP stack. RTP is
  the Internet-standard protocol for the transport of real-time data, 
diff -Nru libccrtp-2.0.9/debian/libccrtp2t64.install libccrtp-2.0.9/debian/libccrtp2t64.install
--- libccrtp-2.0.9/debian/libccrtp2t64.install	1970-01-01 00:00:00.000000000 +0000
+++ libccrtp-2.0.9/debian/libccrtp2t64.install	2023-12-05 22:11:43.000000000 +0000
@@ -0,0 +1 @@
+usr/lib/*/lib*.so.*
diff -Nru libccrtp-2.0.9/debian/libccrtp2t64.lintian-overrides libccrtp-2.0.9/debian/libccrtp2t64.lintian-overrides
--- libccrtp-2.0.9/debian/libccrtp2t64.lintian-overrides	1970-01-01 00:00:00.000000000 +0000
+++ libccrtp-2.0.9/debian/libccrtp2t64.lintian-overrides	2024-01-31 20:12:51.000000000 +0000
@@ -0,0 +1 @@
+libccrtp2t64: package-name-doesnt-match-sonames libccrtp2v5
diff -Nru libccrtp-2.0.9/debian/libccrtp2v5.install libccrtp-2.0.9/debian/libccrtp2v5.install
--- libccrtp-2.0.9/debian/libccrtp2v5.install	2023-12-05 22:11:43.000000000 +0000
+++ libccrtp-2.0.9/debian/libccrtp2v5.install	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-usr/lib/*/lib*.so.*