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

boost::bind overloaded operators
by tolik levchik 11 Jul '12

11 Jul '12

Hello, i have some questions: 1) Why min_element give me errors without BOOST_RANGE_ENABLE_CONCEPT_ASSERT defined 0? Is it uses only for make error messages more readable? Is it safe to define it to 0? #include <vector> //#define BOOST_RANGE_ENABLE_CONCEPT_ASSERT 0 #include <boost/range.hpp> #include <boost/range/adaptors.hpp> #include <boost/range/algorithm.hpp> #include <boost/range/numeric.hpp> #include <boost/bind.hpp> struct foo{ int x; }; int main() { using namespace boost::adaptors; using boost::bind; std::vector<foo> vec; auto rng = vec | transformed(bind(&foo::x, _1)); boost::accumulate(rng, 0); // ok boost::min_element(rng); // error } 2) Why only logical operators overloaded for boost::bind and arithmetic one are not? Is it safe to define it manually with BOOST_BIND_OPERATOR?

2 1

Using c++11 features in clang
by Marshall Clow 11 Jul '12

11 Jul '12

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. -- 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

5 5

Windows 8/Windows Server 2012 compatibility
by Eli Zakashansky 11 Jul '12

11 Jul '12

Hi, Does anyone knows/tested boost compatibility with Windows 8/Windows Server 2012 ? I am currently using Boost 1.39.0, it works very well on prior versions of windows. Should Windows 8 be different ? did anyone faced compatibility issues ? Thanks in advance, Eli Zakashansky.

2 1

Re: [Boost-users] boost::log & Visual Studio 2010 - problem with advanced event log backend
by Don 10 Jul '12

10 Jul '12

Konrad, I don't think the author of boost::log watches this mailing list. You might find more help at the boost-log sourceforge forum: http://sourceforge.net/projects/boost-log/forums/forum/710022. For what it's worth, I found using boost::log to be challenging, because there were lots of API changes between version 1 and 2, the API continues to change, and the documentation has not always kept up with the changes. Furthermore as the author makes changes he uses the current boost sandbox -- boost::log does not always build with the current released version of boost. If you already have a home-grown logging system in place, I'd question whether it is worth the effort to change. Don -------- Original Message -------- Subject: [Boost-users] boost::log & Visual Studio 2010 - problem with advanced event log backend. From: Konrad Rybacki <konrad.rybacki(a)gmail.com> To: boost-users(a)lists.boost.org Date: Tue, 10 Jul 2012 16:57:22 +0200 > 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. >

1 0

boost::log & Visual Studio 2010 - problem with advanced event log backend.
by Konrad Rybacki 10 Jul '12

10 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.

1 0

boost compilation error on MSVS 2010
by NtVisigoth 10 Jul '12

10 Jul '12

Hello everybody. I have tried to compile boost-libraries and I have trouble with compileation. Try number #1: g:\Projects\boost_1_50_0>bootstrap.bat 1>stdout.txt 2> stderr.txt g:\Projects\boost_1_50_0\tools\build\v2\engine> stdout.txt: Building Boost.Build engine stderr.txt: \Microsoft was unexpected at this time. bootstrap.log: Setting environment for using Microsoft Visual Studio 2010 x86 tools. Try number #2: g:\Projects\boost_1_50_0>bootstrap.bat toolset=msvc 1>stdout.txt 2>stderr.txt g:\Projects\boost_1_50_0> stdout.txt: Building Boost.Build engine Failed to build Boost.Build engine. Please consult bootstrap.log for furter diagnostics. You can try to obtain a prebuilt binary from http://sf.net/project/showfiles.php?group_id=7586&package_id=72941 Also, you can file an issue at http://svn.boost.org Please attach bootstrap.log in that case. stderr.txt: - this file is empty bootstrap.txt: ### ### "Unknown toolset: toolset" ### ### You can specify the toolset as the argument, i.e.: ### .\build.bat msvc ### ### Toolsets supported by this script are: borland, como, gcc, gcc-nocygwin, ### intel-win32, metrowerks, mingw, msvc, vc7, vc8, vc9, vc10, vc11 ### What can I do?

2 2

[Foreach] tweaked for speed -- a kludge worth refining?
by Paul Tuinenga 10 Jul '12

10 Jul '12

I admire the tight machine code BOOST_FOREACH teases compilers into generating. So what could be my problem? More speed! I have a situation with gathering floating-point data that may be of such low interest it's not worth pursuing for the library. In any case, I have my work-around (described below) that gets the job done. In this case, the need to accumulate: 1) using vectors of indices into another data vector (very NUMA) i.e. data[index] 2) there is always at least one index 3) majority of cases are two indices 4) but there may be several indices Obviously, it is best to go ahead and immediately process the (guaranteed) first index. This hides the cost of increment and loop-test in the latency of data fetch, even from L1 cache. But BOOST_FOREACH does not do that. So I hacked the macro. Works great! Creates the tightest machine code, boosting 2-element cases to the hardware limit (SSE/AVX instructions). Yes, there is the curly braces thing -- "crude but effective" is all I'm claiming. I'm sure there are better ways to alter the macro and/or use model; I'm interested to hear about that. - paul Example use: double accum = 0; ORG_BOOST_FOREACH(unsigned i, index) accum += data[i]; double temp, accum = 0; MOD_BOOST_FOREACH(unsigned i, index, temp = data[i]) accum += temp; temp = data[i]; } accum += temp; /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// #define ORG_BOOST_FOREACH(VAR, COL) \ BOOST_FOREACH_PREAMBLE() \ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_col) = BOOST_FOREACH_CONTAIN(COL)) \ {} \ else if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_BEGIN(COL)) \ {} \ else if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_end) = BOOST_FOREACH_END(COL)) \ {} \ else \ for (bool BOOST_FOREACH_ID(_foreach_continue) = true; \ BOOST_FOREACH_ID(_foreach_continue) && !BOOST_FOREACH_DONE(COL); \ BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_NEXT(COL) : (void)0) \ if (boost::foreach_detail_::set_false(BOOST_FOREACH_ID(_foreach_continue))) \ {} \ else \ for (VAR = BOOST_FOREACH_DEREF(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true) #define MOD_BOOST_FOREACH(VAR, COL, TMP) \ BOOST_FOREACH_PREAMBLE() \ if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_col) = BOOST_FOREACH_CONTAIN(COL)) \ {} \ else if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_BEGIN(COL)) \ {} \ else if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_end) = BOOST_FOREACH_END(COL)) \ {} \ else if (bool BOOST_FOREACH_ID(_foreach_continue) = false) \ {} \ else \ { \ /* some kind of BOOST-MPL "assert" here (debug only) to insure there is one item at least */ \ for (VAR = BOOST_FOREACH_DEREF(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true) \ TMP; \ for (BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_NEXT(COL) : (void)0; \ BOOST_FOREACH_ID(_foreach_continue) && !BOOST_FOREACH_DONE(COL); \ BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_NEXT(COL) : (void)0) \ if (boost::foreach_detail_::set_false(BOOST_FOREACH_ID(_foreach_continue))) \ {} \ else \ for (VAR = BOOST_FOREACH_DEREF(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true) ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////

1 0

chaining ouput iterator to input iterator
by MM 09 Jul '12

09 Jul '12

Hi, I have a function that transforms a serie of numbers into another serie: template <typename InputIterator, typename OutputIterator> void transform( InputIterator begin, InputIterator end, OutputIterator out ) { } and a 2nd function that calculates the standard deviation of a sample template <typename InputIterator > double stdev( InputIterator begin, InputIterator end) { } Is there a way to chain these existing functions in order to get the std dev of the transformed serie, without storing the intermediate numbers? Maybe with the help of some lazy iterator, or some lazy function? MM

4 10

[Multi Index] Random Access Index C2247 Compile Error
by Steve Hibbert 09 Jul '12

09 Jul '12

Igor, thanks for getting back to me. Very good suggestion. I was trying to gain 'direct random access' to the items in the container by using the bracket operator on the MIC object, as you would do on a vector... "m_micOrders[index]". This is how example 10 in the Boost documentation shows the usage, using a text block stored in a MIC called tc, and using tc[pos] to access the pos'th element. After a review of the MIC source code and a bit of thinking, I have tried first getting a reference to the random access index, and then using the bracket operator on the reference to the index like this (where the random index is the seventh defined index in my case)... OrderMIC::nth_index<6>::type& index6 = m_micOrders.get<6>(); spOrder = index6[ index ]; It seems a general rule with MIC's is that you should never call any member functions on anything other than a reference to one of the indices. So, thanks very much for your help, and I am off and running again, much obliged. Steve

2 1

[Multi Index] Random Access Index C2247 Compile Error
by Steve Hibbert 09 Jul '12

09 Jul '12

Thanks very much to Steven Watanabe for getting back to me regarding my lower_bound/upper_bound question - I will take a look at equal_range() as suggested. I have been reading around and found the random_access index. This is useful to me to find any random item in my multi_index container. I am having a problem compiling though, I get error c2247 when I try to use the square bracket operator [] to access a randomly indexed item. The error message says that this is an inheritance issue with the protected status of the operator... c:\program files\microsoft visual studio\myprojects\xmltest\xmltest\xmltestapp.cpp(899) : error C2247: 'boost::multi_index::detail::random_access_index<SuperMeta,TagList>::operator []' not accessible because 'boost::multi_index::detail::ordered_index<KeyFromValue,Compare,SuperMeta,TagList,Category>' uses 'protected' to inherit from 'boost::multi_index::detail::random_access_index<SuperMeta,TagList>' I have based my code on example 10 in the Multi Index Documentation source examples. I can see that Daniel Bradburn had the same problem, detailed in a post dated April 6th 2010. Joaquin M Lopez Munoz responded, asking for a little test project to demonstrate, but there I can find no resolution to his (and, thus, my) question. I have also tried using the "#define BOOST_NO_MEMBER_TEMPLATE_FRIENDS" line, but no joy. For now, I can work around by either hacking the protected state to public or iterating the container to a random point. I have updated Boost to 1_50 and created an isolated test case in a small project to replicate the issue. I am using Visual Studio 9 on Windows Vista. Thanks in advance for any help with this. Steve

2 2

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 >

2 1

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 --------------------------------------------------------------------------------

2 1

[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

1 0

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.

1 1

[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.

3 6

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.

1 0

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!

1 0

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

1 0

[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; }

2 1

Is there a straightforward Boost API for REST Web services calls
by Adam J Cooper 05 Jul '12

05 Jul '12

I am new to Boost and definitely still a novice with C++ in general. I would like to use Amazon Web Services (AWS) with C++. AWS supplies tookits (APIs) for .Net, Java, etc. However, they do not supply an API for C++. Therefore, I believe the best way for me to interact with AWS using C++ will be with REST. My rationale for wanting to use C++ is that I enjoy the flexibility and aesthetics of C++ and want to continue to find opportunities to learn and practice with it. (I do not have a specific application need and could use the AWS .Net API for my project if I needed to). Having said that, I understand that Boost is one of the most highly-regarded add-on libraries for C++. Therefore, is there a Boost library that will EASILY allow me to make REST (get and post) calls? If not, can someone recommend another well-tested and widely used C++ library that would allow me to make such REST calls? Thank you, Adam

5 4

Question about Program Options Vector processing for config file
by Charles Mills 05 Jul '12

05 Jul '12

I have the following in my code cnfOptions->add_options()("pacing", po::value< std::vector<float> >(&foo)->composing(), "Pacing experiment") If my config file contains pacing= 3.14 pacing= 2.718 then it works as expected (foo contains the two float numbers). But "pacing" is really a pair of values, not some collection of independent values. I've tried to find a config file syntax more like pacing= 3.14 2.718 that Boost PO will accept, but I can't find one. (I get syntax error complaints about pacing.) Is there either (a.) a syntax for a single pacing= that PO will "compose" into the vector, or (b.) a change I could make to add_options that would make this work. For example, I'm not in love with vector if there is some other container that would work better. Thanks, Charles

1 0

[Multi Index Container]: Retrieving a set by ordered non-unique criteria?
by Steve Hibbert 05 Jul '12

05 Jul '12

I'm a newbie use of Multi Index Containers, apologies if this question is facile. I have read through the Boost online documentation but am still a bit stumped. I have a container that contains shared pointers to instants of a custom object type (in this case, financial market orders). The container has an ordered-non-unique index defined by a member function of the object. Specifically it is the object's state code, an integer. At any point in time, I would expect several objects with a state value of 1, several with 2, etc. I need to pull back the set of objects in a particular state, to a set. I intend to use the set in testing to 'do something' with one random object in that set, but to all intents and purposes I just need to get the shared pointer to an item in State=1. How would I pull back the set (or analogous container) of objects that are in State=1? I am thinking that I first get a reference to the index in question, which is fine. Would I then do a find(), and would that find() operation return a set-like object? Or, would I need to do a lower_bound() and upper_bound() operation to find the two enclosing iterators, and then copy all shared-pointers-to-objects to a std::set, and then operate on the set as normal? Thanks in advance for assistance with this, help is greatly appreciated. Steve [I'm aware that if I change state values, I have to do so via the modify function, via the index, been bitten on that point before.]

2 1

Compiling boost asio 1.50.0 under Xcode 4.3.3 with Clang or GCC and c++11 support
by Graham Reitz 05 Jul '12

05 Jul '12

(Below) Is this is known issue, am I missing something, or does the libboost_system.a library need to be compiled differently than the default directions to work with c++11 support? The following code produces linker errors when the compiler options -std=c++11and libc++ are used: #include <iostream> #include <boost/asio.hpp> int main( int argc, char* argv[] ) { return 0; } Undefined symbols for architecture x86_64: "std::allocator<char>::allocator()", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) "std::allocator<char>::~allocator()", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) "std::string::operator=(char const*)", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&)", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()", referenced from: (anonymous namespace)::generic_error_category::message(int) const in libboost_system.a(error_code.o) ___tcf_0 in libboost_system.a(error_code.o) ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

2 2

[test] defining a macro to ignore tests
by Marco Craveiro 05 Jul '12

05 Jul '12

boost-uers, I vaguely recall a discussion a while ago regarding support for ignoring tests in boost test, and the conclusion being that its not possible. However, is it as simple as defining a macro such as this? #define BOOST_IGNORE_AUTO_TEST_CASE(test_name) void test_name() If that's the case, it would really be useful to have this in boost test. Cheers Marco -- So young, and already so unknown -- Pauli blog: http://mcraveiro.blogspot.com

3 3