April 2013 - Boost-users - lists.preview.boost.org

boost interprocess linking problems under windows
by Jonathon Love 24 Apr '13

24 Apr '13

hi, i'm having difficulty compiling my program which uses boost::interprocess under windows. it compiles successfully under OS X. ./debug\enginesync.o: In function `ZN5boost12interprocess6winapi16co_uninitializerD1Ev': C:/progra~1/boost/boost_1_53_0/boost/interprocess/detail/win32_api.hpp:1651: undefined reference to `_imp__CoUninitialize@0' ./debug\enginesync.o: In function `ZN5boost12interprocess6winapi23get_wmi_class_attributeERSbIwSt11char_traitsIwESaIwEEPKwS8_': C:/progra~1/boost/boost_1_53_0/boost/interprocess/detail/win32_api.hpp:1673: undefined reference to `_imp__CoInitializeEx@8' Makefile.Debug:148: recipe for target '..\JASPDesktop.exe' failed C:/progra~1/boost/boost_1_53_0/boost/interprocess/detail/win32_api.hpp:1690: undefined reference to `_imp__CoInitializeSecurity@36' C:/progra~1/boost/boost_1_53_0/boost/interprocess/detail/win32_api.hpp:1700: undefined reference to `_imp__CoCreateInstance@20' C:/progra~1/boost/boost_1_53_0/boost/interprocess/detail/win32_api.hpp:1731: undefined reference to `_imp__CoSetProxyBlanket@32' C:/progra~1/boost/boost_1_53_0/boost/interprocess/detail/win32_api.hpp:1774: undefined reference to `_imp__VariantClear@4' collect2.exe: error: ld returned 1 exit status mingw32-make[2]: *** [..\JASPDesktop.exe] Error 1 i'm using mingw32 gcc 4.7, boost 1.53, under windows xp 32 bit. any assistance would be appreciated. with thanks

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Cpp_int and cpp_dec_float conversion
by Alessandro Tagliapietra 24 Apr '13

24 Apr '13

Hello, is there a way to convert from cpp_int to cpp_dec_float and viceversa? Since I've to use the modulus between two cpp_dec_float which I know they're integers but I need sqrt before and trying to run % with them gives: /usr/local/include/boost/multiprecision/number.hpp: In member function > ‘void boost::multiprecision::number<Backend, > ExpressionTemplates>::do_assign(const Exp&, const > boost::multiprecision::detail::modulus_immediates&) [with Exp = > boost::multiprecision::detail::expression<boost::multiprecision::detail::modulus_immediates, > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, void, void>, Backend = > boost::multiprecision::backends::cpp_dec_float<100u, int, void>, > boost::multiprecision::expression_template_option ExpressionTemplates = > et_on]’: > /usr/local/include/boost/multiprecision/number.hpp:680: instantiated > from ‘void boost::multiprecision::number<Backend, > ExpressionTemplates>::do_assign(const > boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>&, > const mpl_::true_&) [with tag = > boost::multiprecision::detail::modulus_immediates, Arg1 = > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, Arg2 = > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, Arg3 = void, Arg4 = void, Backend = > boost::multiprecision::backends::cpp_dec_float<100u, int, void>, > boost::multiprecision::expression_template_option ExpressionTemplates = > et_on]’ > /usr/local/include/boost/multiprecision/number.hpp:134: instantiated > from ‘typename boost::enable_if<boost::is_convertible<typename > boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, > Arg4>::result_type, boost::multiprecision::number<Backend, > ExpressionTemplates> >, boost::multiprecision::number<Backend, > ExpressionTemplates>&>::type boost::multiprecision::number<Backend, > ExpressionTemplates>::operator=(const > boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>&) > [with tag = boost::multiprecision::detail::modulus_immediates, Arg1 = > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, Arg2 = > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, Arg3 = void, Arg4 = void, Backend = > boost::multiprecision::backends::cpp_dec_float<100u, int, void>, > boost::multiprecision::expression_template_option ExpressionTemplates = > et_on]’ > /usr/local/include/boost/multiprecision/number.hpp:181: instantiated > from ‘boost::multiprecision::number<Backend, > ExpressionTemplates>::number(const > boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>&, > typename boost::enable_if_c<boost::is_convertible<typename > boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, > Arg4>::result_type,boost::multiprecision::number<Backend, > ExpressionTemplates> >::value, void>::type*) [with tag = > boost::multiprecision::detail::modulus_immediates, Arg1 = > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, Arg2 = > boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<100u, > int, void>, et_on>, Arg3 = void, Arg4 = void, Backend = > boost::multiprecision::backends::cpp_dec_float<100u, int, void>, > boost::multiprecision::expression_template_option ExpressionTemplates = > et_on]’ > test.cpp:20: instantiated from here > /usr/local/include/boost/multiprecision/number.hpp:912: error: invalid > application of ‘sizeof’ to incomplete type > ‘boost::STATIC_ASSERTION_FAILURE<false>’ Thanks in advance Best Regards

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HOWTO: Connect Boost Signals & Slots to Qt Signals & Slots
by John Adamson 24 Apr '13

24 Apr '13

Hello everyone, Please find the first in a series of articles here: http://www.oxforddynamics.com/articles/connect_qt_and_boost_signals_and_slo… I hope it will be of use! Moderators: is this type of post is acceptable or not? Please let me know if it isn't and I won't post Boost related HOWTOs here again. Kind Regards, John

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message_queue and libvevent
by Francesco "kurojishi" Berni 23 Apr '13

23 Apr '13

hi, i'm trying to use the boost::interprocess::message_queue class in an event driven software that use for a great part sockets and libevent for the event loop. normally for monitoring of events in this software we use the file descriptor of the PF_UNIX sockets. now, i'm trying to understand if the message_queue generate signals or other events when useing the blocking methods and if there is something i can feed to the event_new() function of libevent. i didn't find anything that give me this information in the doc: http://www.boost.org/doc/libs/1_53_0/doc/html/interprocess/synchronization_… thankss -- Francesco Berni - kurojishi Registered Linux User #512920 GPG: A1FB5252

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[Xpressive] Problem with more than 49 named captures
by michael.donnerer＠googlemail.com 23 Apr '13

23 Apr '13

Hi all, I am having trouble getting more than 49 named captures to work with boost xpressive 1.49.0. I extended the default mark_tag like so: boost::xpressive::mark_tag s10(10); boost::xpressive::mark_tag s11(11); boost::xpressive::mark_tag s12(12); … boost::xpressive::mark_tag s48(48); boost::xpressive::mark_tag s49(49); together with a regular expression that uses these named captures: (skip rather long expression)… (s49= +(boost::xpressive::set[boost::xpressive::range('0','9')|'-'])) This works as long as I stick to only using up to s49, as soon as I start using s50 the regular expression no longer seems to match. Is there anything obvious I am missing before I start digging deeper? Thanks, Mike

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[REVIEW] Boost.Predef
by Joel Falcou 23 Apr '13

23 Apr '13

Hi all, first, I want to apologize for the delay in getting this review results out. Looks like my last email get lost at some point. Anyway, after the initial review of Rene Riviera Boost.Predef, my decision was to Conditionnally Accept Boost.Predef under the request that the comments raised during the review period were addressed. Since then, Rene worked hard on actually making those changes so I now feel confident to announce that Boost.Predef is ACCEPTED as a Boost library. Regards

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boost::wave help?
by Raghavendra Raaghu 23 Apr '13

23 Apr '13

Hi all, I'm a newbie in c++ and i want to use boost::wave library to preprocess a c file. I found a exe file in boost site which works fine. But i want a similar executable/binary for Solaris 10/11.I'm using g++. I've installed boost in both solaris 10 and 11. But how i'm getting a wierd linker error with too big error message. Any help is greatly appreciated. thanks Raghu

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newbie trying use boost using INTEL compilter
by Per Zetterberg 23 Apr '13

23 Apr '13

Dear All, I built boost_1_53_0 using the intel compiler (__INTEL_COMPILER is 1310). It seemed to work great. However, when I try to compile my app (also using intel compiler) I get the following error: ../core/four_multi.cpp(675): error: class "boost::asio::ip::basic_resolver_iterator<boost::asio::ip::tcp>" has no suitable copy constructor The code has previously compiler and worked great using the gcc. Any help would be highly appreciated. BR/ Per Zetterberg

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boost::bind issues
by Littlefield, Tyler 23 Apr '13

23 Apr '13

Hello all: I'm having some issues with boost::bind. I'm using it as normal, but I'm still getting a ton of errors: In file included from staticObject.h:7:0, from staticObject.cpp:6: olc.h: In instantiation of ‘class OlcEntry<boost::function<std::basic_string<char>()__attribute__((const))>, boost::function<void(const std::basic_string<char>&)> >’: staticObject.cpp:160:60: required from here olc.h:43:5: error: ‘OlcEntry<G, S>::_getter’ has incomplete type here's what the specific lines on staticObject.cpp looks like: sgroup->AddEntry(new OlcStringEntry("name", "Sets the name of the object", OF_NORMAL, boost::bind(&StaticObject::GetName, _1), boost::bind(&StaticObject::SetName, _1, _2))); and here's the incomplete type deal. typedef boost::function<std::string () const> StringGetter; typedef boost::function<void (const std::string&)> StringSetter; template <class G, class S> class OlcEntry:public IOlcEntry { protected: G _getter; S _setter; public: OlcEntry(const std::string &name, const std::string &help, FLAG flag, const G& getter, const S& setter) :IOlcEntry(name, help, flag) { _setter = setter; _getter = getter; } ... }; Any ideas/help would be awesome. Thanks, -- Take care, Ty http://tds-solutions.net The aspen project: a barebones light-weight mud engine: http://code.google.com/p/aspenmud He that will not reason is a bigot; he that cannot reason is a fool; he that dares not reason is a slave.

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[serialization] Custom Shared pointer
by Jari 22 Apr '13

22 Apr '13

hi i have couple questions about boost serilazation regarding shared pointers. First off i was wondering if boost::shared_ptr has working serilazation code? if so maybe i can learn from there. What's im trying to do is save fairly simple custom shared-pointer class. All it should take is to save the pointer in the class and ref count as well the Parent variable which is pointer to the parent shared-pointer. what needs to be considered for this? should i disable tracking for the shared-pointer and does the pointer stored in the shared-pointer require some special considerations? thanks.

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