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[Asio]How to solve the link wrongs in Mingw ?
by SP Z 18 Aug '06

18 Aug '06

Sorry,this is a beginner question, Maybe waste your time here :) When I build the examples of tutorial asio 0.37 in Mingw , the compiler tell me " undefined reference to `WinMain@16'" at the last step. I try google anywhere ,but still can't the right way. the wrong messages $ bjam -sTOOLS=mingw ...found 1176 targets... ...updating 12 targets... gcc-Link-action ..\..\..\..\bin\boost\libs\asio\example\tutorial\timer1.exe\mingw\debug\threading-multi\timer1.exe F:/job/environment/mingw/mingw/bin/../lib/gcc/i686-pc-mingw32/3.4.2/../../../libmingw32.a(main.o):main.c:(.text+0x106): undefined reference to `WinMain@16' collect2: ld returned 1 exit status "g++" "-Wl,--enable-auto-image-base" -g -mthreads -Wl,--allow-multiple-definition -mno-cygwin -o "..\..\..\..\bin\boost\libs\asio\example\tutorial\timer1.exe\mingw\debug\threading-multi\timer1.exe" -L"../../../../bin/boost/libs/thread/build/libboost_thread.lib/mingw/debug/threading-multi" -L"" "..\..\..\..\bin\boost\libs\asio\example\tutorial\timer1.exe\mingw\debug\threading-multi\timer.obj" "..\..\..\..\bin\boost\libs\thread\build\libboost_thread.lib\mingw\debug\threading-multi\libboost_thread-mgw-mt-d-1_33_1.lib" "..\..\..\..\bin\boost\libs\thread\build\libboost_thread.lib\mingw\debug\threading-multi\libboost_thread-mgw-mt-d-1_33_1.lib" -lws2_32 -lmswsock and so on........ --

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[Boost.Test] How to handle std::valarray<> w/ BOOST_CHECK or BOOST_CHECK_EQUAL
by Marc Viala 18 Aug '06

18 Aug '06

Hello, I am using the Boost.Test framework, but I not able to use std::valarray<> with BOOST_CHECK or BOOST_CHECK_EQUAL macro. For example: <\code> static void print_valarray(std::ostream& os, std::valarray<double> const& v) { // TODO } namespace std { std::ostream& operator<< (std::ostream& os, std::valarray<double> const& v) { print_valarray(os, v) ; return os ; } } ; std::valarray<double> v(10) ; BOOST_CHECK_EQUAL(v, v); <\code> Failed with the following compilation error: c:\Dev\MViala\ADV\Library\boost-1_33_1\boost\test\predicate_result.hpp(51): error C2664: 'boost::test_tools::predicate_result::readonly_property57::readonly_property57(const boost::test_tools::predicate_result::readonly_property57::write_param_t)' : impossible de convertir le paramètre 1 de 'std::_Boolarray' en 'const boost::test_tools::predicate_result::readonly_property57::write_param_t' Configuration: Platform: Win32 Compiler: Microsoft Visual C++ version 7.1 STL : Dinkumware standard library version 313 Boost : 1.33.1 Any help will be appreciated... Marc Viala

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Vacation Days
by Clarke, Carus V 17 Aug '06

17 Aug '06

Matt, My son has an audition with the Tacoma Youth Symphony tomorrow and needs me to provide transportation. Therefore, I will need to take one day of vacation to do this. Also, he has a college visit scheduled in Portland next Wednesday, August 23, and I will have to take another day of vacation to take him. Thanks, Carus V. (Bud) Clarke carus.v.clarke(a)boeing.com

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Building boost for 64-bit on AIX
by Patrik Jonsson 17 Aug '06

17 Aug '06

Hi, I'm trying to build boost (1.32.0) on an IBM SP2 under AIX5, using the 64-bit ABI. This is troublesome. I do: bjam "-sTOOLS=gcc" "-sGXX=g++ -maix64 -pthread" --prefix=$HOME --libdir=$HOME/lib64-gcc --includedir=$HOME/include-gcc install But it doesn't work. I get loads of errors like: gcc-Link-action bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/libboost_date_time-gcc-d-1_32.so ld: 0711-738 ERROR: Input file bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/greg_month.o: XCOFF32 object files are not allowed in 64-bit mode. collect2: ld returned 8 exit status set -e LIBPATH=bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true:$LIBPATH export LIBPATH "g++" -maix64 -pthread -g -fPIC -shared -o "bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/libboost_date_time-gcc-d-1_32.so" "bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/greg_month.o" "bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/greg_weekday.o" "bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/date_generators.o" ...failed gcc-Link-action bin/boost/libs/date_time/build/libboost_date_time.so/gcc/debug/shared-linkable-true/libboost_date_time-gcc-d-1_32.so... ...skipped <@boost!lib64-gcc>libboost_date_time-gcc-d-1_32.so for lack of <@boost!libs!date_time!build/libboost_date_time.so/gcc/debug/shared-linkable-true>libboost_date_time-gcc-d-1_32.so... It seems it's using -maix64 ok when trying to build the library, but not when compiling... Can anyone tell me what the proper way of building boost under these conditions are? Thanks, /Patrik Jonsson

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Boost Stride/Extent useage in multi array.
by james osburn 17 Aug '06

17 Aug '06

given the following: multi_array< double, 3 > y( extents[dim3][dim2][dim1] ); what is: y.shape()[0] y.strides()[0] thanks black_13

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Re: [Boost-users] [Graph] kamada_kawai_spring_layout runs forever
by Sebi 17 Aug '06

17 Aug '06

hi chris, > I think your problem is that all your verticies are at the same > location. >> From the documentation: > > " Prior to invoking this algorithm, it is recommended that the > vertices be > placed along the vertices of a regular n-sided polygon via > circle_layout<http://www.boost.org/libs/graph/doc/circle_layout.html>. > " thank you so much, that was it. i actually read the docs, but since it says "recommended" i thought i'd rather leave it away to make things not even more complicated. i think i will suggest to have the documentation changed to "...it is required that...". lots of regards, sebastian mecklenburg

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[statechart] Getting the current state from an async machine
by Johan Nilsson 17 Aug '06

17 Aug '06

Hi, I need a way to get the current state from an asynchronous state machine for testing purposes - something analogous to state_cast. I'll only be using this in my unit tests, so I don't mind if it's a bit cumbersome to use. Thread-safety also isn't an issue. Is there any way of getting a reference to the actual Processor instance? Thanks / Johan

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[serialization] -- compiling but not linking...undefined references
by rkemp 17 Aug '06

17 Aug '06

I successfully built the entire boost library using the bjam utility. Now I'm trying to compile and link demo.cpp but it is failing to resolve about a dozen symbols. demo.cpp is the example code for the serialization library. A typical error reads: undefined reference to 'boost::archive::ARCHIVE_SIGNUTURE' I am linking to the libboost_serialization-gcc.so library. Is there another? Can anyone steer me in the right direction? Thx.

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[program_options] How to allow multiple options?
by Ian McCulloch 17 Aug '06

17 Aug '06

Hi, I have spent several hours looking at the docs and sources, but I cannot figure out how to allow multiple occurances of an option. Many unix tools allow you to specify the --verbose option multiple times, to mean increasing verbosity of output, and I want to replicate this behaviour. Does this require writing a new class derived from value_semantic, that combines the behaviour of bool_switch() and typed_value<std::vector<bool>> ? I'm not sure how to go about doing that. It is a very useful lib, but I do wish (often!) there was some real reference docs (aside from the doxygen stuff and comments in the sources themselves, which isn't enough :-( Unrelated, but in trying to figure this out from the docs, I noticed in the overview.html, in the Syntactic Information there is a call to a function value<string>()->implicit(). However typed_value<T> has no such member function. Maybe it is left over from a previous design iteration or something, as there is a member variable m_implicit but it is never initialized or accessed. Cheers, Ian McCulloch

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[serialization] Problem serializing a std::map
by David Guardado 16 Aug '06

16 Aug '06

Hello, When trying to serialize a STL map, doing the following (in Visual C++ 7.1): class Being { private: std::wstring Name, Description; friend class boost::serialization::access; public: template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & this->Name; ar & this->Description; } }; class Ecosystem { private: friend class boost::serialization::access; std::map<std::wstring,Being> Beings; public: template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & this->Beings; } }; ... ar & ecosystem; // Making the serialization within some function (storing) ... I get this compile-time error: "c:\Boost\include\boost-1_33_1\boost\serialization\access.hpp(109): error C2039: 'serialize' : is not a member of 'std::map<_Kty,_Ty>' with [_Kty=std::wstring,_Ty=Models::Beings]" Has anyone any ideas about the reason for this error? Thanking you in advance, David

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