July 2012 - Boost-users - lists.preview.boost.org

Re: [Boost-users] Include sqlite3 in Jam.root file
by Damian 07 Jul '12

07 Jul '12

Hi Steven, Thanks for the quick reply. I've made progress with your information but I still can't compile. The new error is with the linker: /usr/bin/ld: cannot find -lsqlite3 Here is my Jamroot file (minus the hash marks): I would have thought that /usr/include was in the default search path for g++. Any ideas? ############################################### lib sqlite3 ; exe mainApp : ## sources sqlite3 [ glob ./src/*.cpp ] : ## requirements <include>/usr/include <include>./pwiz_root/boost_1_43_0 <include>./pwiz_root/libraries/boost_aux #<include>./src/threadpool/boost <include>./pwiz_root/pwiz <include>./pwiz_root/ext/boost/regex <library>./pwiz_root/pwiz/data/msdata//pwiz_data_msdata <library>./pwiz_root/pwiz/utility/misc//pwiz_utility_misc : ## requirements <warnings>all <threading>multi <toolset>gcc <link>static #<cxxflags> <optimization>speed <variant>release : ## default-build ; #################################################### > > > ------------------------------ > > Message: 2 > Date: Fri, 06 Jul 2012 21:05:55 -0700 > From: Steven Watanabe <watanabesj(a)gmail.com> > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] Include sqlite3 in Jam.root file > Message-ID: <4FF7B5A3.1000800(a)providere-consulting.com> > Content-Type: text/plain; charset=ISO-8859-1 > > AMDG > > On 07/06/2012 07:25 PM, Damian wrote: >> Hello. >> >> I'm trying to compile a C++ project using boost/bjam that uses SQLite3. >> >> Normally I would: g++ main.cpp -lsqlite3 -o main.exe >> >> But I don't know how to specify the library in the Jam file. >> >> Can someone tell me how you specify the libraries in a jam file? >> >> I'm using RHEL 6.2 (64bit) in case it matters. >> >> Thanks in advance for any and all help. >> > > lib sqlite3 ; > exe main : main.cpp sqlite3 ; > > In Christ, > Steven Watanabe >

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Include sqlite3 in Jam.root file
by Damian 07 Jul '12

07 Jul '12

Hello. I'm trying to compile a C++ project using boost/bjam that uses SQLite3. Normally I would: g++ main.cpp -lsqlite3 -o main.exe But I don't know how to specify the library in the Jam file. Can someone tell me how you specify the libraries in a jam file? I'm using RHEL 6.2 (64bit) in case it matters. Thanks in advance for any and all help. Damian -------------------------------------------------------------------------------- "There is no gene for the Human Spirit" -- GATTACA --------------------------------------------------------------------------------

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[Serialization] msvc derived class in dll throws archive_exception::unregistered_class
by drivehappy 06 Jul '12

06 Jul '12

Hi, This is (yet another) question about the archive_exception::unregistered_class ("derived class not registered or exported"). I've tried to find as much information before posting here, but frankly I'm stumped at this point. I believe this SO topic (http://stackoverflow.com/questions/9189055/put-the-serialization-of-a-class…) is pretty much the exact same problem I'm having if you want more code to look at. The problem is that the archive_exception::unregistered_class exception is thrown when attempting to serialize via a base class pointer that is instantiated as a derived type defined in a shared library (DLL). The declaration and definition for the serialization is split between a header/cpp respectively. Serializing in the same manner, but with the derived class defined in the same executable works correctly. To hopefully answer the easy questions right away: the header contains the BOOST_CLASS_EXPORT_KEY macro and the cpp contains the BOOST_CLASS_EXPORT_IMPLEMENT with the defined exported templated functions for the binary_iarchive and binary_oarchive, e.g.: header: BOOST_CLASS_EXPORT_KEY(derivedClass) cpp: BOOST_CLASS_EXPORT_IMPLEMENT(derivedClass) template LIB_LINKAGE void derivedClass::serialize(boost::archive::binary_iarchive & ar, const unsigned int version); template LIB_LINKAGE void derivedClass::serialize(boost::archive::binary_oarchive & ar, const unsigned int version); The derivedClass::serialize contains the serialization for the base class, e.g.: template <class Archive> void ModuleStarted::serialize(Archive & ar, unsigned int) { ar & boost::serialization::base_object<baseClass>(*this); } My problem only exists under msvc (have not tried other versions but using 9 with SP1), building under g++ 4.6.3 works correctly. I have tested with Boost 1.49.0 and 1.50.0. Some discussions mentioned placing the BOOST_CLASS_EXPORT_* macros after the export.hpp #include, and even having the export.hpp included after the archive headers, all of which don't appear to work. I have also created a standalone VS solution with the executable and dll projects from the Boost.Serialization test code (test_dll_export, with polymorphic_base and polymorphic_derived2) and the same problem still occurs. I have attached this file (unfortunately the include paths will need to be modified) - it's built against Boost 1.50.0. I've looked at the following discussions: http://www.boost.org/doc/libs/1_50_0/libs/serialization/doc/special.html#dl… (The manual, I've triple-checked this). http://lists.boost.org/boost-users/2011/01/65295.php (Robert modified a VS solution but the zip was never attached properly, so I cannot check this). Thanks, Mark

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My personally built boost gives me remove_reference.hpp:39:29: error: template argument 1 is invalid type messages
by Jim Galarowicz 06 Jul '12

06 Jul '12

Hi all, I'm wondering if anyone has seen this issue before and might be able to point out what I'm doing wrong. I'm building boost into a local directory on systems where I don't have root privileges and need to use boost for our tool development. Here is the snippet of code I'm using to build boost (1.48 or 1.49). Both give me the problem(s) outlined below. cp SOURCES/boost_$boostver.tar.gz BUILD/$sys/boost_$boostver.tar.gz cd BUILD/$sys tar -xzvf boost_$boostver.tar.gz cd boost_$boostver ./bootstrap.sh --prefix=$OPENSS_BOOST_ROOT ./bjam --layout=tagged --prefix=$OPENSS_BOOST_ROOT --libdir=$OPENSS_BOOST_ROOT/$LIBDIR --includedir=$OPENSS_BOOST_ROOT/include threading=multi install cd ../../.. I believe I was able to build earlier versions of boost (1.45) w/o these issues. So maybe something changed or needed to that I wasn't aware of... ERRORS on some platforms (x86_64 clusters) : -- Build files have been written to: /home/jeg/cbtf/framework/build + make Scanning dependencies of target cbtf [ 3%] Building CXX object libcbtf/CMakeFiles/cbtf.dir/Component.cpp.o In file included from /opt/OSS202/include/boost/any.hpp:17:0, from /home/jeg/cbtf/framework/libcbtf/KrellInstitute/CBTF/Component.hpp:23, from /home/jeg/cbtf/framework/libcbtf/Component.cpp:21: /opt/OSS202/include/boost/type_traits/remove_reference.hpp:39:29: error: template argument 1 is invalid In file included from /opt/OSS202/include/boost/type_traits/is_reference.hpp:17:0, from /opt/OSS202/include/boost/any.hpp:18, from /home/jeg/cbtf/framework/libcbtf/KrellInstitute/CBTF/Component.hpp:23, from /home/jeg/cbtf/framework/libcbtf/Component.cpp:21: /opt/OSS202/include/boost/type_traits/is_rvalue_reference.hpp:21:1: error: template argument 1 is invalid In file included from /opt/OSS202/include/boost/type_traits/decay.hpp:14:0, from /opt/OSS202/include/boost/filesystem/v3/path_traits.hpp:22, from /opt/OSS202/include/boost/filesystem/v3/path.hpp:25, from /opt/OSS202/include/boost/filesystem.hpp:35, from /home/jeg/cbtf/framework/libcbtf/KrellInstitute/CBTF/Component.hpp:24, from /home/jeg/cbtf/framework/libcbtf/Component.cpp:21: /opt/OSS202/include/boost/type_traits/is_function.hpp:99:1: error: template argument 1 is invalid In file included from /opt/OSS202/include/boost/filesystem/v3/path.hpp:27:0, from /opt/OSS202/include/boost/filesystem.hpp:35, from /home/jeg/cbtf/framework/libcbtf/KrellInstitute/CBTF/Component.hpp:24, from /home/jeg/cbtf/framework/libcbtf/Component.cpp:21: ERRORS on another platform (Cray): - Configuring done -- Generating done -- Build files have been written to: /ccs/home/jgalaro/cbtf/framework/build + make Scanning dependencies of target cbtf [ 5%] Building CXX object libcbtf/CMakeFiles/cbtf.dir/Component.cpp.o [ 11%] Building CXX object libcbtf/CMakeFiles/cbtf.dir/ComponentImpl.cpp.o [ 17%] Building CXX object libcbtf/CMakeFiles/cbtf.dir/ResolvePath.cpp.o In file included from /ccs/home/jgalaro/oss_202_shared/include/boost/spirit/home/classic/core.hpp:28:0, from /ccs/home/jgalaro/oss_202_shared/include/boost/spirit/home/classic.hpp:24, from /ccs/home/jgalaro/cbtf/framework/libcbtf/ResolvePath.cpp:22: /ccs/home/jgalaro/oss_202_shared/include/boost/spirit/home/classic/core/match.hpp:18:69: fatal error: boost/spirit/home/classic/core/impl/match_attr_traits.ipp: No such file or directory compilation terminated. make[2]: *** [libcbtf/CMakeFiles/cbtf.dir/ResolvePath.cpp.o] Error 1 make[1]: *** [libcbtf/CMakeFiles/cbtf.dir/all] Error 2 make: *** [all] Error 2 + make install [ 5%] Building CXX object libcbtf/CMakeFiles/cbtf.dir/ResolvePath.cpp.o In file included from /ccs/home/jgalaro/oss_202_shared/include/boost/spirit/home/classic/core.hpp:28:0, from /ccs/home/jgalaro/oss_202_shared/include/boost/spirit/home/classic.hpp:24, from /ccs/home/jgalaro/cbtf/framework/libcbtf/ResolvePath.cpp:22: /ccs/home/jgalaro/oss_202_shared/include/boost/spirit/home/classic/core/match.hpp:18:69: fatal error: boost/spirit/home/classic/core/impl/match_attr_traits.ipp: No such file or directory compilation terminated. make[2]: *** [libcbtf/CMakeFiles/cbtf.dir/ResolvePath.cpp.o] Error 1 make[1]: *** [libcbtf/CMakeFiles/cbtf.dir/all] Error 2 make: *** [all] Error 2 + cd ../.. Thanks, Jim G.

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[Chrono][System]:header only Boost.Chrono is not working with header only Boost.System
by Dmitriy Matison 06 Jul '12

06 Jul '12

Hi, On RHEL 5.5 Boost.Chrono 1.1.0 (Boost 1.47.0) fails to run in header only mode with header only Boost.System. This file can't be compiled: #define BOOST_SYSTEM_NO_DEPRECATED // without it also error, but in [Boost.System] #define BOOST_SYSTEM_INLINED #define BOOST_CHRONO_HEADER_ONLY #include <boost/chrono.hpp> int main() { boost::chrono::steady_clock::time_point start = boost::chrono::steady_clock::now(); return 0; } Error: In function `boost::chrono::steady_clock::now()': boost/chrono/detail/inlined/posix/chrono.hpp:85: undefined reference to `boost::system::system_category()' Any comments from Chrono\System guys? Thanks, Dmitriy.

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boost::log & Visual Studio 2010 - problem with advanced event log backend.
by Konrad Rybacki 06 Jul '12

06 Jul '12

Hi All, I am trying to introduce boost::log into one of projects I am working on. The application already does some logging to the trace file and additionaly uses Windows Event Log to post messages. What I am going to do is to replace the existing logging framework with boost::log. Being frank - these are my first attempts at boost at all. I am following exactly the steps from the examples section of the documentation. I have written the following code: boost::shared_ptr< sinks::event_log_backend > backend( new sinks::event_log_backend(( keywords::message_file = "<path to library>.dll", keywords::log_name = "My Application", keywords::log_source = "My Source" )) ); sinks::event_log::event_composer composer( sinks::event_log::direct_event_id_mapping<int>("EventId") ); composer[MY_APPLICATION_SESSION_CREATION_FAILURE] % fmt::message(); backend->set_event_composer(composer); boost::shared_ptr<sinks::synchronous_sink< sinks::event_log_backend>> sink( new sinks::synchronous_sink< sinks::event_log_backend >(backend) ); sink->set_filter( (flt::attr<SeverityLevel>("Severity") == info || flt::attr<SeverityLevel>("Severity") == warning || flt::attr<SeverityLevel>("Severity") == error || flt::attr<SeverityLevel>("Severity") == fatal) && flt::has_attr<int>("EventId") ); sinks::event_log::custom_event_type_mapping<SeverityLevel> mapping("Severity"); mapping[trace] = sinks::event_log::info; mapping[debug] = sinks::event_log::info; mapping[info] = sinks::event_log::info; mapping[warning] = sinks::event_log::warning; mapping[error] = sinks::event_log::error; mapping[fatal] = sinks::event_log::error; sink->locked_backend()->set_event_type_mapper(mapping); logging::core::get()->add_sink(sink); I am building the code with Visual Studio 2010. Unfortunately I get the following error: 1>F:\boost\boost\boost/function/function_template.hpp(153): error C2064: term does not evaluate to a function taking 3 arguments 1> class does not define an 'operator()' or a user defined conversion operator to a pointer-to-function or reference-to-function that takes appropriate number of arguments 1> F:\boost\boost\boost/function/function_template.hpp(147) : while compiling class template member function 'void boost::detail::function::void_function_obj_invoker3<FunctionObj,R,T0,T1,T2>::invoke(boost::detail::function::function_buffer &,T0,T1,T2)' 1> with 1> [ 1> FunctionObj=boost::log_mt_nt5::formatters::fmt_message<char>, 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & 1> ] 1> F:\boost\boost\boost/function/function_template.hpp(907) : see reference to class template instantiation 'boost::detail::function::void_function_obj_invoker3<FunctionObj,R,T0,T1,T2>' being compiled 1> with 1> [ 1> FunctionObj=boost::log_mt_nt5::formatters::fmt_message<char>, 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> & 1> ] 1> F:\boost\boost\boost/function/function_template.hpp(722) : see reference to function template instantiation 'void boost::function3<R,T0,T1,T2>::assign_to<Functor>(Functor)' being compiled 1> with 1> [ 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> &, 1> Functor=boost::log_mt_nt5::formatters::fmt_message<char> 1> ] 1> F:\boost\boost\boost/log/sinks/event_log_backend.hpp(678) : see reference to function template instantiation 'boost::function3<R,T0,T1,T2>::function3<FormatterT>(Functor,int)' being compiled 1> with 1> [ 1> R=void, 1> T0=std::basic_ostream<char,std::char_traits<char>> &, 1> T1=const boost::log_mt_nt5::basic_attribute_values_view<char> &, 1> T2=const std::basic_string<char,std::char_traits<char>,std::allocator<char>> &, 1> FormatterT=boost::log_mt_nt5::formatters::fmt_message<char>, 1> Functor=boost::log_mt_nt5::formatters::fmt_message<char> 1> ] 1> LoggingFacility.cpp(111) : see reference to function template instantiation 'boost::log_mt_nt5::sinks::event_log::basic_event_composer<CharT>::event_map_reference &boost::log_mt_nt5::sinks::event_log::basic_event_composer<CharT>::event_map_reference::operator %<boost::log_mt_nt5::formatters::fmt_message<CharT>>(const FormatterT &)' being compiled 1> with 1> [ 1> CharT=char, 1> FormatterT=boost::log_mt_nt5::formatters::fmt_message<char> 1> ] The problem seems to be caused by the following expression: composer[MY_APPLICATION_SESSION_CREATION_FAILURE] % fmt::message(); Other backends work flawlessly. Event log files (.h/.mc/.dll) are OK too. Any help? Regards, Konrad Rybacki.

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assign from coordinate_matrix to a compressed_matrix problems??
by Anelia Angelova 05 Jul '12

05 Jul '12

Hi, I am trying to convert a coordinate_matrix to a compressed_matrix using the "assign" function and got weird compilations errors. Could you please help me with what the problem is.I am running the following code:------------------int size=10;typedef ublas::coordinate_matrix<double> data_type_1;typedef ublas::compressed_matrix<double> data_type; data_type_1 A(size,size, 9*size);data_type M;M.resize(A.size1(),A.size2(),A.nnz()); // Convert matrix A into a compressed one.M.assign(A); // <----------- Error occurs here!------------------------- I get the following compilation errors: /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/include/g++-v4/bits/stl_tempbuf.h: In constructor 'std::_Temporary_buffer<_ForwardIterator, _Tp>::_Temporary_buffer(_ForwardIterator, _ForwardIterator) [with _ForwardIterator = boost::numeric::ublas::indexed_iterator<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, std::random_access_iterator_tag>, _Tp = boost::numeric::ublas::index_triple<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > >]':/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/include/g++-v4/bits/stl_algo.h:3084:17: instantiated from 'void std::inplace_merge(_BIter, _BIter, _BIter) [with _BIter = boost::numeric::ublas::indexed_iterator<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, std::random_access_iterator_tag>]'/usr/include/boost/numeric/ublas/matrix_sparse.hpp:4403:17: instantiated from 'void boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::sort() const [with T = double, L = boost::numeric::ublas::basic_row_major<>, long unsigned int IB = 0ul, IA = boost::numeric::ublas::unbounded_array<long unsigned int>, TA = boost::numeric::ublas::unbounded_array<double, std::allocator<double> >]'/usr/include/boost/numeric/ublas/matrix_sparse.hpp:4486:13: instantiated from 'boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::const_iterator1 boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::find1(int, boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::size_type, boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::size_type, int) const [with T = double, L = boost::numeric::ublas::basic_row_major<>, long unsigned int IB = 0ul, IA = boost::numeric::ublas::unbounded_array<long unsigned int>, TA = boost::numeric::ublas::unbounded_array<double, std::allocator<double> >, boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::size_type = long unsigned int]'/usr/include/boost/numeric/ublas/matrix_sparse.hpp:4798:34: instantiated from 'boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::const_iterator1 boost::numeric::ublas::coordinate_matrix<T, L, IB, IA, TA>::begin1() const [with T = double, L = boost::numeric::ublas::basic_row_major<>, long unsigned int IB = 0ul, IA = boost::numeric::ublas::unbounded_array<long unsigned int>, TA = boost::numeric::ublas::unbounded_array<double, std::allocator<double> >]'/usr/include/boost/numeric/ublas/detail/matrix_assign.hpp:909:57: instantiated from 'void boost::numeric::ublas::matrix_assign(M&, const boost::numeric::ublas::matrix_expression<E>&, boost::numeric::ublas::sparse_tag, boost::numeric::ublas::row_major_tag) [with F = boost::numeric::ublas::scalar_assign, R = boost::numeric::ublas::basic_full<>, M = boost::numeric::ublas::compressed_matrix<double>, E = boost::numeric::ublas::coordinate_matrix<double>]'/usr/include/boost/numeric/ublas/detail/matrix_assign.hpp:1216:9: instantiated from 'void boost::numeric::ublas::matrix_assign(M&, const boost::numeric::ublas::matrix_expression<E2>&) [with F = boost::numeric::ublas::scalar_assign, M = boost::numeric::ublas::compressed_matrix<double>, E = boost::numeric::ublas::coordinate_matrix<double>]'/usr/include/boost/numeric/ublas/matrix_sparse.hpp:2992:13: instantiated from 'boost::numeric::ublas::compressed_matrix<T, L, IB, IA, TA>& boost::numeric::ublas::compressed_matrix<T, L, IB, IA, TA>::assign(const boost::numeric::ublas::matrix_expression<E1>&) [with AE = boost::numeric::ublas::coordinate_matrix<double>, T = double, L = boost::numeric::ublas::basic_row_major<>, long unsigned int IB = 0ul, IA = boost::numeric::ublas::unbounded_array<long unsigned int>, TA = boost::numeric::ublas::unbounded_array<double, std::allocator<double> >, boost::numeric::ublas::compressed_matrix<T, L, IB, IA, TA> = boost::numeric::ublas::compressed_matrix<double>]'mexLapBoo.cc:254:12: instantiated from here/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/include/g++-v4/bits/stl_tempbuf.h:192:6: error: invalid initialization of non-const reference of type 'boost::numeric::ublas::index_triple<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > >&' from an rvalue of type 'boost::numeric::ublas::indexed_iterator<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, std::random_access_iterator_tag>::reference'/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/include/g++-v4/bits/stl_uninitialized.h:223:5: error: in passing argument 3 of 'void std::__uninitialized_construct_range(_ForwardIterator, _ForwardIterator, _Tp&) [with _ForwardIterator = boost::numeric::ublas::index_triple<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > >*, _Tp = boost::numeric::ublas::index_triple<boost::numeric::ublas::index_triple_array<boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<long unsigned int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > >]' Your help is really appreciated. Thanks a lot!

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Re: [Boost-users] [cfe-dev] Using c++11 features in clang
by Marshall Clow 05 Jul '12

05 Jul '12

On Jul 5, 2012, at 12:41 PM, Joseph Galbraith wrote: > On 07/05/2012 12:29, Marshall Clow wrote: >> In response to a some questions on the boost-users list (and boost bug reports), I wrote up this: >> http://marshall.calepin.co/llvmclang-and-standard-libraries-on-mac-os-x.html >> >> I don't know if this should be a FAQ entry for Boost, or for clang. >> Suggestions/comments/edits welcome. > > Isn't one of both of -std=c++11 and -stdlib=libc++ an ABI change? > > If so, it should probably be noted that all code should be build with > the same settings for these flags. Yes. > In particular, I think that you can't pass a std:: classes from libstdc++ > built code to libc++ code without bad things happening. I would expect that also, but libc++ has versioned namespaces that _should_ prevent that from happening (I.e, cause linker errors). > I'm not sure whether just turning whether the following is safe or not: > > clang++ -c -stdlib=libc++ x.cpp > clang++ -c -stdlib=libc++ -std=c++11 y.cpp > clang++ -stdlib=libc++ x.o y.o I would expect either: * It would "just work" * It would fail to link depending on what the contents of x.cpp and y.cpp were. If you can come up with a good way of explaining this, I'll be happy to add it to my post. -- Marshall Marshall Clow Idio Software <mailto:mclow.lists@gmail.com> A.D. 1517: Martin Luther nails his 95 Theses to the church door and is promptly moderated down to (-1, Flamebait). -- Yu Suzuki

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[boost.locale] Conversion exception when generator class object extracts locale class object for russian utf-8 strings
by NtVisigoth 05 Jul '12

05 Jul '12

Hello, everyone! When using boost::locale with the russian language of the string in UTF-8 encoding I get an error while getting the locale. An exception with the message e.what(): "Conversion failed" is thrown My code is not very different from that in the examples: #define TR(S) boost::locale::translate(S).str()**const std ::string strDefaultLangId( "en" );**int main( int argc, char * argv[] )**{** using namespace std;** using namespace boost::locale;** int exitCode = EXIT_SUCCESS;** try** {** generator gen;** gen.add_messages_path("g:\\source\\boost_locale\\languages\\");** gen.add_messages_domain("messages");** std ::string language( argc == 2 ? argv[1] : strDefaultLangId.c_str() );** std::locale loc = gen( language );** locale::global( loc );** std::wstring s = TR(L"hello world");** wcout << s << endl;** }** catch( exception& e )** {** cout << "Error : " << e.what() << endl;** exitCode = EXIT_FAILURE;** }** catch ( ... )** {** cout << "Unknown error" << endl;** exitCode = EXIT_FAILURE;** }** return exitCode;**} The path to the file with the russian language: "g:\source\boost_locale\languages\ru\LC_MESSAGES\messages.mo" What could be wrong? * Is it necessary to use any backends? * Is it yet necessary to call imbue on the stream? But I'd like avoid it because I am going to write the log using glog.

1 0

[Graph] No known conversion from int to vertex_iterator
by Martin Magnusson 05 Jul '12

05 Jul '12

I'm using BGL to store 3D triangle meshes, and I'm also using the ANN lib to find nearest neighbours of mesh points. My code used to work, using gcc 4.4 and BGL 1.40 (in Ubuntu 10.04), but since upgrading to gcc 4.6 and BGL 1.48 (in Ubuntu 12.04), my code doesn't compile anymore. I cut down my code to a minimal (I think) example that shows my problem. The attached code compiles with the old setup (I just get a warning that adjacency_list.hpp uses a deprecated header), but it does not compile in Ubuntu 12.04, The compilation error I get is "no matching function for call to 'Mesh::Vertex_Iterator::Vertex_Iterator(const Mesh* const, unsigned int&)'" The reason for that is that there is "no known conversion for argument 2 from 'unsigned int' to 'Mesh::Vertex_Graph_Iterator {aka boost::range_detail::integer_iterator<unsigned int>}'" Could anybody explain why, and what I can do to solve it? Is there any way to create a boost::adjacency_list::vertex_iterator using an int in the current version of BGL? #include <boost/graph/adjacency_list.hpp> class Mesh { public: typedef boost::property< boost::vertex_index1_t, int32_t, // The actual vertex boost::property< boost::vertex_index2_t, std::vector< unsigned int >, // Connected mesh faces boost::property< boost::vertex_rank_t, bool > > > // Boundary flag Vertex_Properties; typedef boost::property< boost::edge_weight_t, double > Edge_Length; typedef boost::adjacency_list < boost::setS, // No parallel edges boost::vecS, // Loading gets painful if this is setS boost::undirectedS, // Edges are undirected Vertex_Properties, // Vertices store Vertex, faces & bnd. flag Edge_Length > // Edges store their length Vertex_Graph; typedef Vertex_Graph::vertex_iterator Vertex_Graph_Iterator; //---------------------------------------------------------------// // VERTEX ITERATOR: //---------------------------------------------------------------// class Vertex_Iterator : public boost::iterator_adaptor <Vertex_Iterator, Vertex_Graph_Iterator, int32_t, boost::bidirectional_traversal_tag> { public: Vertex_Iterator() {} Vertex_Iterator( const Mesh* const mesh, Vertex_Graph_Iterator p ) : its_parent (mesh), its_vertex (p) {} const Mesh* its_parent; Vertex_Graph_Iterator its_vertex; }; void test_function() const; }; void Mesh::test_function() const { unsigned int i = 1; std::vector< Mesh::Vertex_Iterator > closest (10); closest[1] = Vertex_Iterator ( this, i ); //THIS IS THE PROBLEM } int main( int argc, char** argv ) { Mesh m; m.test_function(); return 0; }

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