[Bug 1331242] Re: libstdc++6: missing symbols std::__once_functor, std::__get_once_mutex(), `std::__set_once_functor_lock_ptr(std::unique_lock<std::mutex>*)

[Matthias Klose]

fixed in binutils, and a rebuild of gcc-4.8 and gcc-4.9 with the new
binutils

** Changed in: gcc-4.9 (Ubuntu)
       Status: New => Fix Released

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Title:
  libstdc++6: missing symbols std::__once_functor,
  std::__get_once_mutex(),
  `std::__set_once_functor_lock_ptr(std::unique_lock<std::mutex>*)

Status in “gcc-4.9” package in Ubuntu:
  Fix Released

Bug description:
  Building unity-scope-click in the landing ppa against current utopic
  fails with undefined references to various libstdc functions.

  /usr/bin/arm-linux-gnueabihf-g++   -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2  -std=c++11 -O2 -g -Wextra -Wall -Werror -fPIC   -Wl,-Bsymbolic-functions -Wl,-z,relro CMakeFiles/libclick-scope-tests.dir/test_download_manager.cpp.o CMakeFiles/libclick-scope-tests.dir/test_index.cpp.o CMakeFiles/libclick-scope-tests.dir/test_interface.cpp.o CMakeFiles/libclick-scope-tests.dir/test_configuration.cpp.o CMakeFiles/libclick-scope-tests.dir/test_reviews.cpp.o CMakeFiles/libclick-scope-tests.dir/test_smartconnect.cpp.o CMakeFiles/libclick-scope-tests.dir/test_webclient.cpp.o CMakeFiles/libclick-scope-tests.dir/test_data.cpp.o CMakeFiles/libclick-scope-tests.dir/libclick-scope-tests_automoc.cpp.o  -o libclick-scope-tests -rdynamic /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5.2.1 ../click/libclickscope.a -lunity-scopes -lunity-api -lubuntuoneauth-2.0 -lQt5DBus -lQt5Network -lsignon-qt5 -laccounts-qt5 -lQt5Xml -lQt5Core -lubuntu-download-manager-client -lQt5DBus -lQt5Core -lubuntu-download-manager-common -lQt5DBus -lQt5Core -ljsoncpp ../../gmock/libgmock.a ../../gmock/libgmock_main.a -lpthread -lQt5Network -lsignon-qt5 -laccounts-qt5 -lQt5Xml -lubuntu-download-manager-client -lubuntu-download-manager-common -lboost_locale 
  ../click/libclickscope.a(qtbridge.cpp.o): In function `void std::call_once<void (std::__future_base::_State_base::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>&, bool&), std::__future_base::_State_base* const, std::reference_wrapper<std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()> >, std::reference_wrapper<bool> >(std::once_flag&, void (std::__future_base::_State_base::*&&)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>&, bool&), std::__future_base::_State_base* const&&, std::reference_wrapper<std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()> >&&, std::reference_wrapper<bool>&&)':
  /usr/include/c++/4.8/mutex:779: undefined reference to `std::__get_once_mutex()'
  /usr/include/c++/4.8/mutex:783: undefined reference to `std::__set_once_functor_lock_ptr(std::unique_lock<std::mutex>*)'
  /usr/include/c++/4.8/mutex:790: undefined reference to `std::__set_once_functor_lock_ptr(std::unique_lock<std::mutex>*)'
  ../click/libclickscope.a(qtbridge.cpp.o): In function `function<std::call_once(std::once_flag&, _Callable&&, _Args&& ...) [with _Callable = void (std::__future_base::_State_base::*)(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter>()>&, bool&); _Args = {std::__future_base::_State_base* const, std::reference_wrapper<std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter>()> >, std::reference_wrapper<bool>}]::__lambda0, void>':
  /usr/include/c++/4.8/functional:2030: undefined reference to `std::__once_functor'
  collect2: error: ld returned 1 exit status

  https://launchpadlibrarian.net/177798305/buildlog_ubuntu-utopic-armhf.unity-scope-click_0.1%2B14.10.20140617.5-0ubuntu1_FAILEDTOBUILD.txt.gz
  https://launchpad.net/~ci-train-ppa-service/+archive/landing-018/

  This build was done with binutils 2.24.51.20140617-1ubuntu1, g++-4.8
  4.8.3-3ubuntu2, libstdc++-4.8-dev .3-3ubuntu2, and libstdc++6
  4.9.0-7ubuntu2.

  /usr/include/c++/4.8/mutex:779: undefined reference to `std::__get_once_mutex()'
  /usr/include/c++/4.8/mutex:783: undefined reference to `std::__set_once_functor_lock_ptr(std::unique_lock<std::mutex>*)'
  /usr/include/c++/4.8/mutex:790: undefined reference to `std::__set_once_functor_lock_ptr(std::unique_lock<std::mutex>*)'

  None of these symbols are present in libstdc++6 4.8.2-19ubuntu1 from
  trusty, nor are they present in current libstdc++6 4.9.0-7ubuntu2 in
  utopic.  All were present in libstdc++6 4.9.0-7ubuntu1.

  The same issue has been seen when building mir in the landing-016
  silo.

  https://launchpad.net/~ci-train-ppa-service/+archive/landing-016/+build/6107085/+files/buildlog_ubuntu-utopic-armhf.mir_0.3.0%2B14.10.20140617.4-0ubuntu1_FAILEDTOBUILD.txt.gz
  https://launchpad.net/~ci-train-ppa-service/+archive/landing-016/

  (Other packages in that silo have failed to build because they're
  incorrectly building against an older version of mir in the ppa.  They
  are basically showing the converse of this bug, caused by a previous
  mir build succeeding against a libstdc++6 with a different ABI.)

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