Re: [Boost-users] linking with boost log 1.54

Subject: Re: [Boost-users] linking with boost log 1.54
From: Eric Prud'hommeaux (eric_at_[hidden])
Date: 2013-11-20 14:02:07

* Ovanes Markarian <om_boost_at_[hidden]> [2013-11-20 17:35+0100]
> Unfortunately, still had no luck to link the logging library under linux.
> 
> Please find the list of libraires my application links with:
> 
> System Libs
> =========
> pthread rt dl
> 
> Boost Libs
> ========
> system${boost_suffix}
> filesystem${boost_suffix}
> date_time${boost_suffix}
> program_options${boost_suffix}
> chrono${boost_suffix}
> thread${boost_suffix}
> log${boost_suffix}
> log_setup${boost_suffix}
> 
> 
> boost_suffix is -mt. Defining the -DBOOST_LOG_DYN_LINK option makes the
> linker to only miss the logger library symbols. I assume, because
> everything else is expected to be within the missing implementations....

It looks below like the linker isn't finding your static build of the
logger. Maybe (outside shot) you need to add an object which
instantiates a trivial logger to get some of the template functions
below.

I doubt it will help, but just in case, before boost::log was
integrated into the main boost distro, I linked to my app with
something like:

LIBINC	 += -L$(BOOST_TARGET)lib $(LINK_BOOST_LOG) -lboost_thread$(BOOST_SUFFIX) -lboost_filesystem$(BOOST_SUFFIX) -lboost_system$(BOOST_SUFFIX) -lboost_date_time$(BOOST_SUFFIX)

> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::record
> boost::log::v2_mt_posix::sources::basic_composite_logger<char,
> boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string>,
> boost::log::v2_mt_posix::sources::multi_thread_model<boost::log::v2_mt_posix::aux::light_rw_mutex>,
> boost::log::v2_mt_posix::sources::features<boost::log::v2_mt_posix::sources::severity<boost::log::v2_mt_posix::trivial::severity_level>,
> boost::log::v2_mt_posix::sources::channel<std::string>, void, void, void,
> void, void, void, void, void>
> >::open_record<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const* const>,
> boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::severity,
> boost::log::v2_mt_posix::trivial::severity_level const>,
> boost::parameter::aux::empty_arg_list> >
> >(boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const* const>,
> boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::severity,
> boost::log::v2_mt_posix::trivial::severity_level const>,
> boost::parameter::aux::empty_arg_list> > const&)':
> /usr/local/include/boost/log/sources/basic_logger.hpp:457: undefined
> reference to `boost::log::v2_mt_posix::core::get_logging_enabled() const'
> ../libsolver.a(solver_impl.cpp.o): In function `~record_pump':
> /usr/local/include/boost/log/sources/record_ostream.hpp:278: undefined
> reference to `boost::log::v2_mt_posix::aux::unhandled_exception_count()'
> ../libsolver.a(solver_impl.cpp.o): In function `~auto_release':
> /usr/local/include/boost/log/sources/record_ostream.hpp:243: undefined
> reference to
> `boost::log::v2_mt_posix::aux::stream_provider<char>::release_compound(boost::log::v2_mt_posix::aux::stream_provider<char>::stream_compound*)'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::core::push_record(boost::rv<boost::log::v2_mt_posix::record>&)':
> /usr/local/include/boost/log/core/core.hpp:308: undefined reference to
> `boost::log::v2_mt_posix::core::push_record_move(boost::log::v2_mt_posix::record&)'
> ../libsolver.a(solver_impl.cpp.o): In function `record_pump':
> /usr/local/include/boost/log/sources/record_ostream.hpp:258: undefined
> reference to
> `boost::log::v2_mt_posix::aux::stream_provider<char>::allocate_compound(boost::log::v2_mt_posix::record&)'
> /usr/local/include/boost/log/sources/record_ostream.hpp:259: undefined
> reference to `boost::log::v2_mt_posix::aux::unhandled_exception_count()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::aux::severity_level<boost::log::v2_mt_posix::trivial::severity_level>::set_value(boost::log::v2_mt_posix::trivial::severity_level)':
> /usr/local/include/boost/log/sources/severity_feature.hpp:135: undefined
> reference to `boost::log::v2_mt_posix::sources::aux::get_severity_level()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::record
> boost::log::v2_mt_posix::sources::basic_logger<char,
> boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string>,
> boost::log::v2_mt_posix::sources::multi_thread_model<boost::log::v2_mt_posix::aux::light_rw_mutex>
> >::open_record_unlocked<boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const* const>,
> boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::severity,
> boost::log::v2_mt_posix::trivial::severity_level const>,
> boost::parameter::aux::empty_arg_list> >
> >(boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const* const>,
> boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::severity,
> boost::log::v2_mt_posix::trivial::severity_level const>,
> boost::parameter::aux::empty_arg_list> > const&)':
> /usr/local/include/boost/log/sources/basic_logger.hpp:260: undefined
> reference to
> `boost::log::v2_mt_posix::core::open_record(boost::log::v2_mt_posix::attribute_set
> const&)'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::attributes::mutable_constant<std::string, void,
> void, void>::impl::set(std::string const&)':
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:258: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> new(unsigned long)'
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:258: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `~attribute_value_impl':
> /usr/local/include/boost/log/attributes/attribute_value_impl.hpp:47:
> undefined reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> /usr/local/include/boost/log/attributes/attribute_value_impl.hpp:47:
> undefined reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `~impl':
> /usr/local/include/boost/log/attributes/attribute_value.hpp:74: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> /usr/local/include/boost/log/attributes/attribute_value.hpp:74: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o):/usr/local/include/boost/log/attributes/attribute.hpp:69:
> more undefined references to
> `boost::log::v2_mt_posix::attribute::impl::operator delete(void*, unsigned
> long)' follow
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::record::reset()':
> /usr/local/include/boost/log/core/record.hpp:153: undefined reference to
> `boost::log::v2_mt_posix::record_view::public_data::destroy(boost::log::v2_mt_posix::record_view::public_data
> const*)'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::aux::lazy_singleton<boost::log::v2_mt_posix::sources::aux::logger_singleton<logger>,
> boost::shared_ptr<boost::log::v2_mt_posix::sources::aux::logger_holder<boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string> > > >::get()':
> /usr/local/include/boost/log/detail/singleton.hpp:43: undefined reference
> to `boost::log::v2_mt_posix::aux::once_block_sentry::commit()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::aux::once_block_sentry::executed() const':
> /usr/local/include/boost/log/utility/once_block.hpp:90: undefined reference
> to `boost::log::v2_mt_posix::aux::once_block_sentry::enter_once_block()
> const'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::aux::logger_singleton<logger>::init_instance()':
> /usr/local/include/boost/log/sources/global_logger_storage.hpp:119:
> undefined reference to
> `boost::log::v2_mt_posix::sources::aux::global_storage::get_or_init(std::type_info
> const&,
> boost::shared_ptr<boost::log::v2_mt_posix::sources::aux::logger_holder_base>
> (*)())'
> /usr/local/include/boost/log/sources/global_logger_storage.hpp:130:
> undefined reference to
> `boost::log::v2_mt_posix::sources::aux::throw_odr_violation(std::type_info
> const&, std::type_info const&,
> boost::log::v2_mt_posix::sources::aux::logger_holder_base const&)'
> ../libsolver.a(solver_impl.cpp.o): In function `~once_block_sentry':
> /usr/local/include/boost/log/utility/once_block.hpp:85: undefined reference
> to `boost::log::v2_mt_posix::aux::once_block_sentry::rollback()'
> ../libsolver.a(solver_impl.cpp.o): In function `~basic_logger':
> /usr/local/include/boost/log/sources/basic_logger.hpp:80: undefined
> reference to `boost::log::v2_mt_posix::attribute_set::~attribute_set()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::basic_severity_logger<boost::log::v2_mt_posix::sources::basic_channel_logger<boost::log::v2_mt_posix::sources::basic_logger<char,
> boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string>,
> boost::log::v2_mt_posix::sources::multi_thread_model<boost::log::v2_mt_posix::aux::light_rw_mutex>
> >, std::string>,
> boost::log::v2_mt_posix::trivial::severity_level>::basic_severity_logger<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const [7]>
> >(boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const [7]> const&)':
> /usr/local/include/boost/log/sources/severity_feature.hpp:232: undefined
> reference to
> `boost::log::v2_mt_posix::aux::default_attribute_names::severity()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::basic_channel_logger<boost::log::v2_mt_posix::sources::basic_logger<char,
> boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string>,
> boost::log::v2_mt_posix::sources::multi_thread_model<boost::log::v2_mt_posix::aux::light_rw_mutex>
> >,
> std::string>::basic_channel_logger<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const [7]>
> >(boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const [7]> const&)':
> /usr/local/include/boost/log/sources/channel_feature.hpp:134: undefined
> reference to
> `boost::log::v2_mt_posix::aux::default_attribute_names::channel()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::basic_logger<char,
> boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string>,
> boost::log::v2_mt_posix::sources::multi_thread_model<boost::log::v2_mt_posix::aux::light_rw_mutex>
> >::add_attribute_unlocked(boost::log::v2_mt_posix::attribute_name const&,
> boost::log::v2_mt_posix::attribute const&)':
> /usr/local/include/boost/log/sources/basic_logger.hpp:228: undefined
> reference to
> `boost::log::v2_mt_posix::attribute_set::insert(boost::log::v2_mt_posix::attribute_name,
> boost::log::v2_mt_posix::attribute const&)'
> ../libsolver.a(solver_impl.cpp.o): In function `severity_level':
> /usr/local/include/boost/log/sources/severity_feature.hpp:98: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> new(unsigned long)'
> /usr/local/include/boost/log/sources/severity_feature.hpp:98: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `~impl':
> /usr/local/include/boost/log/sources/severity_feature.hpp:65: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> /usr/local/include/boost/log/sources/severity_feature.hpp:65: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::aux::severity_level<boost::log::v2_mt_posix::trivial::severity_level>::impl::dispatch(boost::log::v2_mt_posix::type_dispatcher&)':
> /usr/local/include/boost/log/sources/severity_feature.hpp:75: undefined
> reference to `boost::log::v2_mt_posix::sources::aux::get_severity_level()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::aux::severity_level<boost::log::v2_mt_posix::trivial::severity_level>::impl::detach_from_thread()':
> /usr/local/include/boost/log/sources/severity_feature.hpp:86: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> new(unsigned long)'
> /usr/local/include/boost/log/sources/severity_feature.hpp:87: undefined
> reference to `boost::log::v2_mt_posix::sources::aux::get_severity_level()'
> /usr/local/include/boost/log/sources/severity_feature.hpp:87: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `~attribute_value_impl':
> /usr/local/include/boost/log/attributes/attribute_value_impl.hpp:47:
> undefined reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> /usr/local/include/boost/log/attributes/attribute_value_impl.hpp:47:
> undefined reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::sources::basic_logger<char,
> boost::log::v2_mt_posix::sources::severity_channel_logger_mt<boost::log::v2_mt_posix::trivial::severity_level,
> std::string>,
> boost::log::v2_mt_posix::sources::multi_thread_model<boost::log::v2_mt_posix::aux::light_rw_mutex>
> >::basic_logger<boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const [7]>
> >(boost::parameter::aux::tagged_argument<boost::log::v2_mt_posix::keywords::tag::channel,
> char const [7]> const&)':
> /usr/local/include/boost/log/sources/basic_logger.hpp:172: undefined
> reference to `boost::log::v2_mt_posix::core::get()'
> /usr/local/include/boost/log/sources/basic_logger.hpp:172: undefined
> reference to `boost::log::v2_mt_posix::attribute_set::attribute_set()'
> ../libsolver.a(solver_impl.cpp.o): In function `mutable_constant':
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:276: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> new(unsigned long)'
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:276: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `impl':
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:242: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> new(unsigned long)'
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:242: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `~impl':
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:226: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> /usr/local/include/boost/log/attributes/mutable_constant.hpp:226: undefined
> reference to `boost::log::v2_mt_posix::attribute::impl::operator
> delete(void*, unsigned long)'
> ../libsolver.a(solver_impl.cpp.o): In function `basic_severity_logger':
> /usr/local/include/boost/log/sources/severity_feature.hpp:209: undefined
> reference to
> `boost::log::v2_mt_posix::aux::default_attribute_names::severity()'
> ../libsolver.a(solver_impl.cpp.o): In function `basic_channel_logger':
> /usr/local/include/boost/log/sources/channel_feature.hpp:112: undefined
> reference to
> `boost::log::v2_mt_posix::aux::default_attribute_names::channel()'
> ../libsolver.a(solver_impl.cpp.o): In function
> `boost::log::v2_mt_posix::aux::attribute_set_reference_proxy::operator=(boost::log::v2_mt_posix::attribute
> const&) const':
> /usr/local/include/boost/log/attributes/attribute_set.hpp:484: undefined
> reference to
> `boost::log::v2_mt_posix::attribute_set::insert(boost::log::v2_mt_posix::attribute_name,
> boost::log::v2_mt_posix::attribute const&)'
> ../libsolver.a(solver_impl.cpp.o): In function `basic_logger':
> /usr/local/include/boost/log/sources/basic_logger.hpp:148: undefined
> reference to `boost::log::v2_mt_posix::core::get()'
> /usr/local/include/boost/log/sources/basic_logger.hpp:148: undefined
> reference to
> `boost::log::v2_mt_posix::attribute_set::attribute_set(boost::log::v2_mt_posix::attribute_set
> const&)'
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
> 
> 
> 
> On Wed, Nov 20, 2013 at 4:16 PM, Ovanes Markarian <om_boost_at_[hidden]>wrote:
> 
> > Lars,
> >
> > thanks for your answer. I will try your proposal, we only have static libs
> > which we assemble into an executable. So boost log should be fine here. I
> > also link filesystem etc, but not dl. May be that is the error.
> >
> >
> > I will try it.
> >
> > Thanks,
> > Ovanes
> >
> >
> > On Wed, Nov 20, 2013 at 3:30 PM, Lars Viklund <zao_at_[hidden]> wrote:
> >
> >> On Wed, Nov 20, 2013 at 03:16:54PM +0100, Ovanes Markarian wrote:
> >> > Hi *,
> >> >
> >> > I am stuck with a problem to link on linux (ubuntu 12.04) with a boost
> >> log
> >> > library (clang 3.0 & libstdc++).
> >> >
> >> > No matter what I do it fails. The problem is:
> >> >
> >> > I have a 3rd party library which is delivered as an .so-module and I
> >> need
> >> > to link with it. My project is organized so that we develop static
> >> > libraries and link them with test or application runner executables.
> >> >
> >> > I currently build boost as static libraries only, after I link my
> >> project
> >> > with log library I get tons of errors like:
> >> >
> >> >
> >> /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libpthread.a(nptl-init.o):
> >> > In function `__pthread_initialize_minimal_internal':
> >> > /build/buildd/eglibc-2.15/nptl/nptl-init.c:296: undefined reference to
> >> > `__libc_setup_tls'
> >> > /build/buildd/eglibc-2.15/nptl/nptl-init.c:314: undefined reference to
> >> > `_dl_cpuclock_offset'
> >> > /build/buildd/eglibc-2.15/nptl/nptl-init.c:430: undefined reference to
> >> > `_dl_pagesize'
> >> > /build/buildd/eglibc-2.15/nptl/nptl-init.c:456: undefined reference to
> >> > `_dl_init_static_tls'
> >> > /build/buildd/eglibc-2.15/nptl/nptl-init.c:458: undefined reference to
> >> > `_dl_wait_lookup_done'
> >> >
> >> /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libpthread.a(nptl-init.o):
> >> > In function `__pthread_get_minstack':
> >> > /build/buildd/eglibc-2.15/nptl/nptl-init.c:479: undefined reference to
> >> > `_dl_pagesize'
> >> >
> >> /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libpthread.a(pthread_create.o):
> >> > In function `allocate_stack':
> >> > /build/buildd/eglibc-2.15/nptl/allocatestack.c:457: undefined reference
> >> to
> >> > `_dl_stack_flags'
> >> > /build/buildd/eglibc-2.15/nptl/allocatestack.c:596: undefined reference
> >> to
> >> > `_dl_stack_flags'
> >> > /usr/local/lib/libboost_log-mt-s.a(text_file_backend.o): In function
> >> >
> >> `boost::log::v2s_mt_posix::sinks::anonymous::file_collector::file_collector(boost::shared_ptr<boost::log::v2s_mt_posix::sinks::anonymous::file_collector_repository>
> >> > const&, boost::filesystem::path const&, unsigned long, unsigned long)':
> >> > libs/log/src/text_file_backend.cpp:(.text+0x60b): undefined reference to
> >> > `boost::filesystem::detail::current_path(boost::system::error_code*)'
> >> > libs/log/src/text_file_backend.cpp:(.text+0x65c): undefined reference to
> >> > `boost::filesystem::absolute(boost::filesystem::path const&,
> >> > boost::filesystem::path const&)'
> >> > libs/log/src/text_file_backend.cpp:(.text+0x6b1): undefined reference to
> >> > `boost::filesystem::detail::create_directories(boost::filesystem::path
> >> > const&, boost::system::error_code*)'
> >> >
> >> > And so on. Do you have any hints or suggestions?
> >>
> >> No matter which platform you target, static libraries have the amusing
> >> property that they're pretty much a lump of object files, and as such,
> >> are not linked to any libraries at build time.
> >>
> >> Thus, you need to link to any libraries that Boost.Log uses when you
> >> link to a static Boost.Log. Judging by your errors, this would be
> >> -lboost_filesystem, -ldl and possibly building with -pthread, depending
> >> on your toolchain.
> >>
> >> Also note that if you use Boost.Log in more than one module (DLL, shared
> >> object), you need to use the shared Boost.Log library as indicated by
> >> the documentation [1].
> >>
> >>
> >> http://www.boost.org/doc/libs/1_55_0/libs/log/doc/html/log/installation/config.html
> >>
> >> --
> >> Lars Viklund | zao_at_[hidden]
> >> _______________________________________________
> >> Boost-users mailing list
> >> Boost-users_at_[hidden]
> >> http://lists.boost.org/mailman/listinfo.cgi/boost-users
> >>
> >
> >

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