Ubuntu
media-hub package

please drop build-dependency on g++-4.9

Bug #1452331 reported by Steve Langasek
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
media-hub (Ubuntu)
Fix Released
Critical
Thomas Voß
Ubuntu ubuntu-15.07

Bug Description

The media-hub package currently has a build-dependency on g++-4.9. This build-dependency is present because of the recommendations on https://wiki.ubuntu.com/cpp-11 about handling of C++11.

The C++11 ABI has now stabilized in gcc as of gcc 5; however, before we can switch to gcc 5, we first need to be able to do rebuild tests of the archive against this compiler.

To facilitate this, please drop the build-dependency on g++-4.9 from the package in wily. 4.9 will remain the default until all transition issues have been identified, so there is no risk of accidental ABI breakage here anymore.

Tags: lsd-cxx11

Related branches

lp:~thomas-voss/media-hub/fix-1452331
Ready for review for merging into lp:media-hub
PS Jenkins bot: Needs Fixing (continuous-integration)
Jim Hodapp: Pending requested
Diff: 109 lines (+13/-21)
5 files modified
CMakeLists.txt (+2/-2)
debian/changelog (+6/-0)
debian/control (+5/-9)
debian/libmedia-hub-common3.symbols (+0/-2)
debian/rules (+0/-8)
Steve Langasek (vorlon)
tags: added: lsd-cxx11
Revision history for this message
Matthias Klose (doko) wrote :

raising importance, prevents build using GCC 5, which will become the default at the end of July

Changed in media-hub (Ubuntu):
importance: Undecided → Critical
milestone: none → ubuntu-15.07
status: New → Confirmed
Thomas Voß (thomas-voss)
Changed in media-hub (Ubuntu):
assignee: nobody → Thomas Voß (thomas-voss)
Revision history for this message
Thomas Voß (thomas-voss) wrote :
Download full text (3.3 KiB)

When trying to compile the attached branch, an ICE is triggered:

[ 64%] Building CXX object src/core/media/CMakeFiles/media-hub-service.dir/player_skeleton.cpp.o
cd /scratch/gcc5/fix-1452331/build/src/core/media && /usr/bin/x86_64-linux-gnu-g++ -DMEDIA_HUB_HAVE_HYBRIS_MEDIA_COMPAT_LAYER -DQT_CORE_LIB -DQT_DBUS_LIB -DQT_NO_DEBUG -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -std=c++11 -Wall -fno-strict-aliasing -Wextra -fPIC -pthread -Wno-error=unused-local-typedefs -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include -I/scratch/gcc5/fix-1452331/include -I/usr/include/gstreamer-1.0 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/scratch/gcc5/fix-1452331/src -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -isystem /usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -isystem /usr/include/x86_64-linux-gnu/qt5/QtDBus -fPIC -o CMakeFiles/media-hub-service.dir/player_skeleton.cpp.o -c /scratch/gcc5/fix-1452331/src/core/media/player_skeleton.cpp
In file included from /usr/include/x86_64-linux-gnu/sys/stat.h:104:0,
                 from /usr/include/boost/asio/detail/impl/eventfd_select_interrupter.ipp:23,
                 from /usr/include/boost/asio/detail/eventfd_select_interrupter.hpp:80,
                 from /usr/include/boost/asio/detail/select_interrupter.hpp:25,
                 from /usr/include/boost/asio/detail/epoll_reactor.hpp:29,
                 from /usr/include/boost/asio/detail/reactor.hpp:21,
                 from /usr/include/boost/asio/detail/impl/task_io_service.ipp:24,
                 from /usr/include/boost/asio/detail/task_io_service.hpp:198,
                 from /usr/include/boost/asio/impl/io_service.hpp:71,
                 from /usr/include/boost/asio/io_service.hpp:767,
                 from /usr/include/boost/asio/basic_io_object.hpp:19,
                 from /usr/include/boost/asio/basic_socket.hpp:20,
                 from /usr/include/boost/asio/basic_datagram_socket.hpp:20,
                 from /usr/include/boost/asio.hpp:21,
                 from /scratch/gcc5/fix-1452331/src/core/media/external_services.h:25,
                 from /scratch/gcc5/fix-1452331/src/core/media/player_skeleton.cpp:22:
/usr/include/x86_64-linux-gnu/bits/stat.h:93:5: internal compiler error: Segmentation fault
     struct timespec st_ctim; /* Time of last status change. */
     ^
0xaaaf2f crash_signal
 ../../src/gcc/toplev.c:383
0x1086a91 _cpp_skip_block_comment
 ../../src/libcpp/lex.c:1111
0x108947a _cpp_lex_direct
 ../../src/libcpp/lex.c:2432
0x10898ed _cpp_lex_token
 ../../src/libcpp/lex.c:2176
0x108e3d7 cpp_get_token_1
 ../../src/libcpp/macro.c:2442
0x741edc c_lex_with_flags(tree_node**, unsigned int*, unsigned char*, int)
 ../../src/gcc/c-family/c-lex.c:408
0x66470f cp_lexer_get_preprocessor_token
 ../../src/gcc/cp/parser.c:779
0x693708 cp_lexer_new_main
 ../../src/gcc/cp/parser.c:660
0x693708 cp_parser_new
 ../../src/gcc/cp/parser.c:3484
0x693708 c_parse_file()
 ../../src/gcc/cp/parser.c:33224
0x746c62 c_common_parse_file()
 ../../src/gcc/c-family/c-opts.c:1057
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Changed in media-hub (Ubuntu):
status: Confirmed → In Progress
Revision history for this message
Matthias Klose (doko) wrote :

the ICE is not reproducible for me. It would be good to show it in a PPA build. However the build fails later, because you didn't rename the .install files.

Steve Langasek (vorlon)
Changed in media-hub (Ubuntu):
status: In Progress → Fix Released
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