Debian Bug report logs - #792494
evolution-data-server fails to build with GCC 5 from experimental

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Matthias Klose <doko@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: evolution-data-server fails to build with GCC 5 from experimental

Date: Wed, 15 Jul 2015 14:05:22 +0200

Package: src:evolution-data-server
Version: 3.16.3-1
Severity: important
Tags: sid stretch patch
User: debian-gcc@lists.debian.org
Usertags: ftbfs-gcc-5 libstdc++-cxx11

patch at
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-016/+files/evolution-data-server_3.12.11-0ubuntu3~gcc5.1_3.12.11-0ubuntu3.diff.gz

also:

library transition may be needed when GCC 5 is the default

Background [1]: libstdc++6 introduces a new ABI to conform to the
C++11 standard, but keeps the old ABI to not break existing binaries.
Packages which are built with g++-5 from experimental (not the one
from testing/unstable) are using the new ABI.  Libraries built from
this source package export some of the new __cxx11 or B5cxx11 symbols,
and dropping other symbols.  If these symbols are part of the API of
the library, then this rebuild with g++-5 will trigger a transition
for the library.

What is needed:

 - Rebuild the library using g++/g++-5 from experimental. Note that
   most likely all C++ libraries within the build dependencies need
   a rebuild too. You can find the log for a rebuild in
     https://people.debian.org/~doko/logs/gcc5-20150701/
   Search for "BEGIN GCC CXX11" in the log.

 - Decide if the symbols matching __cxx11 or B5cxx11 are part of the
   library API, and are used by the reverse dependencies of the
   library.

 - If there are no symbols matching __cxx11 or B5cxx11 in the symbols
   forming the library API, you should close this issue with a short
   explanation.

 - If there are no reverse dependencies, it should be the package
   maintainers decision if a transition is needed.  However this might
   break software which is not in the Debian archive, and built
   against these packages.

 - If a library transition is needed, please prepare for the change.
   Rename the library package, append "v5" to the name of the package
   (e.g. libfoo2 -> libfoo2v5). Such a change can be avoided, if you
   have a soversion bump and you upload this version instead of the
   renamed package.  Prepare a patch and attach it to this issue (mark
   this issue with patch), so that it is possible to NMU such a
   package. We'll probably have more than hundred transitions
   triggered. Then reassign the issue to release.debian.org and
   properly tag it as a transition issue, by sending an email to
   control@bugs.debian.org:

     user release.debian.org@packages.debian.org
     usertag <this issue> + transition
     block <this issue> by 790756
     reassign <this issue> release.debian.org

 - If unsure if a transition is needed, please tag the issue with help
   to ask for feedback from other Debian developers.

The libstdc++6 transition will be a large one, and it will come with a
lot of pain.  Please help it by preparing the follow-up transitions.

[1] https://wiki.debian.org/GCC5#libstdc.2B-.2B-_ABI_transition

Message #12 received at 792494@bugs.debian.org (full text, mbox, reply):

From: Simon McVittie <smcv@debian.org>

To: 792494@bugs.debian.org

Subject: Re: Bug#792494: evolution-data-server fails to build with GCC 5 from experimental

Date: Thu, 6 Aug 2015 10:25:54 +0100

On Wed, 15 Jul 2015 at 14:05:22 +0200, Matthias Klose wrote:
> patch at
> https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-016/+files/evolution-data-server_3.12.11-0ubuntu3~gcc5.1_3.12.11-0ubuntu3.diff.gz

I've adapted that patch on the assumption that e-d-s upstream do not consider
the offending symbols to be ABI (they're C++ template instantiations from
a private module).

> also:
> library transition may be needed when GCC 5 is the default

I think this is a false positive because those symbols aren't API.

> The libstdc++6 transition will be a large one, and it will come with a
> lot of pain.  Please help it by preparing the follow-up transitions.

To reduce the pain slightly, the attached patch also disables
libphonenumber support on Linux for the moment; according to codesearch,
only syncevolution uses it, and syncevolution seems to be designed to
cope gracefully with its absence.

This would let the buildds start work on libreoffice as soon as e-d-s
has built; this seems like a big win, because libreoffice takes hours
to build, and has had a pair of successful binNMUs on kFreeBSD (where
libphonenumber is already disabled).

I have not been able to test the patched e-d-s yet, since upgrading
my system to the g++-5 ABI still has too much collateral damage (notably
including libreoffice becoming uninstallable). However, perhaps it's
worth uploading anyway, to keep the transition moving?

    S

Message #17 received at 792494@bugs.debian.org (full text, mbox, reply):

From: Simon McVittie <smcv@debian.org>

To: 792494@bugs.debian.org

Subject: Re: Bug#792494: evolution-data-server fails to build with GCC 5 from experimental

Date: Thu, 6 Aug 2015 10:29:26 +0100

[Message part 1 (text/plain, inline)]

On Thu, 06 Aug 2015 at 10:25:54 +0100, Simon McVittie wrote:
> the attached patch

... is now attached.

[eds-792494.diff (text/x-diff, attachment)]

Message #22 received at 792494@bugs.debian.org (full text, mbox, reply):

From: Simon McVittie <smcv@debian.org>

To: 792494@bugs.debian.org

Subject: Re: Bug#792494: evolution-data-server fails to build with GCC 5 from experimental

Date: Thu, 6 Aug 2015 23:26:31 +0100

[Message part 1 (text/plain, inline)]

On Thu, 06 Aug 2015 at 10:25:54 +0100, Simon McVittie wrote:
> I have not been able to test the patched e-d-s yet, since upgrading
> my system to the g++-5 ABI still has too much collateral damage

Now tested and uploaded to DELAYED/2, final debdiff attached.
Please let me know if I should cancel or reschedule.

    S

[evolution-data-server_3.16.3-1.1.diff (text/x-diff, attachment)]

Message #29 received at 792494-close@bugs.debian.org (full text, mbox, reply):

From: Simon McVittie <smcv@debian.org>

To: 792494-close@bugs.debian.org

Subject: Bug#792494: fixed in evolution-data-server 3.16.3-1.1

Date: Sat, 08 Aug 2015 22:34:41 +0000

Source: evolution-data-server
Source-Version: 3.16.3-1.1

We believe that the bug you reported is fixed in the latest version of
evolution-data-server, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 792494@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Simon McVittie <smcv@debian.org> (supplier of updated evolution-data-server package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Thu, 06 Aug 2015 19:56:33 +0100
Source: evolution-data-server
Binary: evolution-data-server evolution-data-server-common evolution-data-server-dev evolution-data-server-dbg evolution-data-server-doc libedataserver-1.2-20 libedataserver1.2-dev gir1.2-edataserver-1.2 libedataserverui-1.2-1 libedataserverui1.2-dev libcamel-1.2-52 libcamel1.2-dev libebook-1.2-16 libebook1.2-dev gir1.2-ebook-1.2 libedata-book-1.2-25 libedata-book1.2-dev gir1.2-ebookcontacts-1.2 libebook-contacts-1.2-1 libebook-contacts1.2-dev libecal-1.2-18 libecal1.2-dev libedata-cal-1.2-27 libedata-cal1.2-dev libebackend-1.2-10 libebackend1.2-dev
Architecture: all source
Version: 3.16.3-1.1
Distribution: unstable
Urgency: medium
Maintainer: Debian Evolution Maintainers <pkg-evolution-maintainers@lists.alioth.debian.org>
Changed-By: Simon McVittie <smcv@debian.org>
Closes: 792494
Description: 
 evolution-data-server-common - architecture independent files for Evolution Data Server
 evolution-data-server-dbg - evolution database backend server with debugging symbols
 evolution-data-server-dev - Development files for evolution-data-server (metapackage)
 evolution-data-server-doc - Documentation files for the Evolution Data Server libraries
 evolution-data-server - evolution database backend server
 gir1.2-ebook-1.2 - GObject introspection for the EBook library
 gir1.2-ebookcontacts-1.2 - GObject introspection for the EBook Contacts library
 gir1.2-edataserver-1.2 - GObject introspection for the EDataServer library
 libcamel-1.2-52 - Evolution MIME message handling library
 libcamel1.2-dev - Development files for libcamel
 libebackend-1.2-10 - Utility library for evolution data servers
 libebackend1.2-dev - Utility library for evolution data servers (development files)
 libebook-1.2-16 - Client library for evolution address books
 libebook1.2-dev - Client library for evolution address books (development files)
 libebook-contacts-1.2-1 - Client library for evolution contacts books
 libebook-contacts1.2-dev - Client library for evolution contacts books (development files)
 libecal-1.2-18 - Client library for evolution calendars
 libecal1.2-dev - Client library for evolution calendars (development files)
 libedata-book-1.2-25 - Backend library for evolution address books
 libedata-book1.2-dev - Backend library for evolution address books (development files)
 libedata-cal-1.2-27 - Backend library for evolution calendars
 libedata-cal1.2-dev - Backend library for evolution calendars (development files)
 libedataserver-1.2-20 - Utility library for evolution data servers
 libedataserver1.2-dev - Utility library for evolution data servers (development files)
 libedataserverui-1.2-1 - Utility library for evolution data servers
 libedataserverui1.2-dev - Utility library for evolution data servers (development files)
Changes:
 evolution-data-server (3.16.3-1.1) unstable; urgency=medium
 .
   * Non-maintainer upload.
   * Disable libphonenumber support for now, to disentangle e-d-s from
     that part of the libstdc++ transition (which it appears is going
     to involve a new upstream release).
   * debian/libedataserver-1.2-20.symbols: mark ICU template instantiations
     as optional since they are not intended to be ABI (Closes: #792494)
Checksums-Sha1: 
 576e5f44e4d30b42f7fb165d05b124b089ab23a6 5069 evolution-data-server_3.16.3-1.1.dsc
 a75c0cc2c4fc0187c58fcd24ebce2fa6fae462b8 43644 evolution-data-server_3.16.3-1.1.debian.tar.xz
 64119f24e28a629db39d93320ee97b30615ee663 1182586 evolution-data-server-common_3.16.3-1.1_all.deb
 c7c797a1b70b15449a49d7b5fe7db348c1db1d7c 1468446 evolution-data-server-doc_3.16.3-1.1_all.deb
Checksums-Sha256: 
 cacaa221ebbb2dc875e58dd7778a9fbace0dae748fd7b02a26c4385ba30585fa 5069 evolution-data-server_3.16.3-1.1.dsc
 99379f1d6091aab788239f8b351da3ce56aac285a182818c523ff01117742342 43644 evolution-data-server_3.16.3-1.1.debian.tar.xz
 c7ddaeb6f2c3841ae0350d7e060a6c06606572f831477f0aed4ad4f276beee5b 1182586 evolution-data-server-common_3.16.3-1.1_all.deb
 74f6fb3e9013fe32d202f3656151a68571d083dff6b5acbc12b02fc069a8d581 1468446 evolution-data-server-doc_3.16.3-1.1_all.deb
Files: 
 9d628f5b1f06100e58c62c3f6b986e2f 5069 gnome optional evolution-data-server_3.16.3-1.1.dsc
 13a00b995f8ad996a00ebd59c05690e8 43644 gnome optional evolution-data-server_3.16.3-1.1.debian.tar.xz
 ee44eafef8cbc17ed18dd76ad174a43a 1182586 gnome optional evolution-data-server-common_3.16.3-1.1_all.deb
 bcd1dc2d613d07177a09913d4de3f953 1468446 doc optional evolution-data-server-doc_3.16.3-1.1_all.deb

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