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Mac & Boost::Locale from_utf error Undefined symbols for architecture x86_64
by NoRulez 06 Apr '14

06 Apr '14

Hello, I've used the following command to build boost on a mac: ./b2 -a toolset=darwin architecture=x86 macosx-version=10.5 macosx-version-min=10.5 threading=multi link=static address-model=32_64 --without-mpi stage When i link the following source: bool runJavascript(const char * jscode) { std::string javaScriptCode; try { javaScriptCode = boost::locale::conv::from_utf<char>(jscode, "ISO-8859-15"); } catch(...) { javaScriptCode = jscode; } } Then i get the following error message, on windows this work just fine: Undefined symbols for architecture x86_64: "std::basic_string<char, std::char_traits<char>, std::allocator<char> > boost::locale::conv::from_utf<char>(char const*, char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::locale::conv::method_type)", referenced from: ProxyMethod(char const*, char const*, void*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)in JavaScriptRunner.cpp.o ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status Does anyone have an idea on how to solve that? Thanks in advance

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[Graph] Questions and remarks
by Albert Yiamakis 06 Apr '14

06 Apr '14

Hello, Some questions and remarks regarding Boost.Graph: i) Why does write_graphviz require a VertexEdgeListGraph? I was unable to invoke it on an adjacency_list using sets as containers for vertices and edges; instead I had to switch to vectors. However, the function is meant to output - does the efficiency of the traversal really matter? ii) Would it be possible to mutate the graph in the visitors of an algorithm? For instance, generating the graph during a breadth-first search, by adding vertices and edges. Presumably, it would be the user's responsibility to color the vertices appropriately. (Interestingly, visitors take a non-const reference to the graph - but compilation failed at some other point). iii) The documentation of the distance_recorder states that "A WritablePropertyMap where the key type and the value type are the vertex descriptor type of the graph." which has to be a mistake. It seems this has already been pointed out in the past (http://boost.2283326.n4.nabble.com/BGL-distance-recorder-td2571349.html) but is yet to be corrected. Albert -- kojirion.github.io

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Find out which build options were used
by NoRulez 05 Apr '14

05 Apr '14

Hello, is there somewhere in the boost directory a log file or something else where I can find out how the boost libraries where build? The problem is the following, a college of mine build an old version of boost. The college is not longer in our company and I want to update the library to 1.55.0, but I don't know the preprocessor variables and/or options he used. Any help would be great. Thanks so much

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Compilation errors after upgrading from 1.38 to 1.55
by Normand Mongeau 04 Apr '14

04 Apr '14

Hi, I'm trying to change our boost version from 1.38 to 1.55, and am getting these compilation errors: 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(24): warning C4002: too many actual parameters for macro 'trunc' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(24): error C2027: use of undefined type 'boost::math::tools::promote_args' 1> D:\RootReferences\boost_1_55_0\boost/math/tools/promotion.hpp(120) : see declaration of 'boost::math::tools::promote_args' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(24): error C2226: syntax error : unexpected type 'T' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(24): error C2988: unrecognizable template declaration/definition 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(24): error C2059: syntax error : '-' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(24): error C2059: syntax error : ')' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(26): error C2065: 'T' : undeclared identifier 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(26): error C2988: unrecognizable template declaration/definition 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(26): error C2059: syntax error : '-' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(26): error C2059: syntax error : ')' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): warning C4002: too many actual parameters for macro 'round' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): error C2027: use of undefined type 'boost::math::tools::promote_args' 1> D:\RootReferences\boost_1_55_0\boost/math/tools/promotion.hpp(120) : see declaration of 'boost::math::tools::promote_args' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): error C2226: syntax error : unexpected type 'T' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): error C2143: syntax error : missing ';' before '+' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): error C2059: syntax error : ')' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(42): error C2059: syntax error : ')' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(44): error C2065: 'T' : undeclared identifier 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(44): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(44): error C2374: 'boost::math::floor' : redefinition; multiple initialization 1> D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_fwd .hpp(42) : see declaration of 'boost::math::floor' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(44): error C2143: syntax error : missing ';' before '+' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(44): error C2059: syntax error : ')' 1>D:\RootReferences\boost_1_55_0\boost/math/special_functions/detail/round_f wd.hpp(44): error C2059: syntax error : ')' The code doesn't matter as the errors occur as soon as I have an include for lexical_cast, i.e. #include <boost/lexical_cast.hpp> This is using Visual Studio 2010. Any ideas as to what the problem is? Thanks, Normand

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Re: [Boost-users] [Serialization] good practice for serialization with private default constructors
by David Rajaratnam 04 Apr '14

04 Apr '14

On 05/04/14 03:46, Robert Ramey wrote: > > Note that subject is treated in the manual. I forget where. You'll > have to > look for it. boost/libs/serialization/doc/index.html > > And there are two tests which explicitly test this. see. > > https://github.com/boostorg/serialization/blob/develop/test/test_non_defaul… > Sorry, I couldn't find the reference in the manual addressing private default constructor good/bad practice. I am undoubtedly misunderstanding something, but I'm not sure the part on non-default constructors is relevant. In any case... > > never do ar & *x. This will evade certain code which the library > requires. Trust > the source luke! > this answers my question. Regards, Dave PS. Thanks for the great library!

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[Serialization] Polymorphic portable binary archive error
by Szymon Gatner 04 Apr '14

04 Apr '14

Hi, I am trying to use polymorphic_portable_binary_archive in Visual Studio 2012 but adding relevant *.cpp(s) (from examples directory) to the project yields: 1>c:\users\bravo\documents\visual studio 2012\projects\polymorphic_serialization_test\polymorphic_portable_binary_oarchive.hpp(19): fatal error C1083: Cannot open include file: 'boost/archive/detail/polymorphic_oarchive_dispatch.hpp': No such file or directory 1>c:\users\bravo\documents\visual studio 2012\projects\polymorphic_serialization_test\polymorphic_portable_binary_oarchive.cpp(18): fatal error C1083: Cannot open include file: 'boost/archive/impl/archive_pointer_oserializer.ipp': No such file or directory Error 2 error C1083: Cannot open include file: 'boost/archive/detail/polymorphic_iarchive_dispatch.hpp': No such file or directory c:\users\bravo\documents\visual studio 2012\projects\polymorphic_serialization_test\polymorphic_portable_binary_iarchive.hpp 19 polymorphic_serialization_test Indeed, none of those files exists in my boost release, I am using boot 1.54. Also: what is the status of Portable Binary Archives? From forum posts It would seem that ony unsupported things is floating point numbers? Is that correct? Other that that, is everything else production ready? Regards, Szymon Gatner -- Szymon Gatner Bravasoft / The Lordz Games Studio Twitter: @sgatner

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boost::regex_replace problem
by Илья 04 Apr '14

04 Apr '14

Greetings everyone! My name is Ilya and i have such problem with boost::regex_replace : I want to process some text messages to find and replace with * swears there. I wrote regular expressions, this is an example of one of them: "([[:punct:]]|[[:space:]]|[[:digit:]]|^)(?:a)(?:[[:punct:]]|[[:space:]]|[[:digit:]])*(?:b)(?:[[:punct:]]|[[:space:]]|[[:digit:]])*(?:c)([[:punct:]]|[[:space:]]|[[:digit:]]|$)". The format string i used is: "$1***$2" Then i run boost::regex_replace() and it works almoust correctly, except one case: when i have message with abc's standing next to each other with one separator beetween them, like this: "abc abc", "--abc-abc--" etc. So i need to run boost::regex_replace() twice to process corectly such messages. Are there any other ways to solve this problem? Thank you for answers. Ilya Bindiug

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[Serialization] good practice for serialization with private default constructors
by David Rajaratnam 03 Apr '14

03 Apr '14

I am interested to know what is good practice when dealing with serializable classes with private default constructors. In particular it is not clear what is the cleanest way to deserializing these objects. Explaining with reference to the example from: http://stackoverflow.com/questions/7123613/boost-serialization-does-the-def… The answer to this stackoverflow question shows how to serialize/deserialize an object with a private default constructor. Summarizing: class Colour { friend class boost::serialization::access; // private default constructor // template serialize function public: boost::shared_ptr<Colour> test() { // returns new object; } }; int main(){ boost::shared_ptr<Colour> c = Colour::test(); std::stringstream str; boost::archive::text_oarchive oa(str); oa & c; // ... c.reset(); boost::archive::text_iarchive ia(str); ia & c; } However, it is important to observe that it is not just serializing/deserializing the object itself but also the shared pointer to the object! So for example: replacing "ao & c;" with "oa & *c;" will compile and properly serialize (only) the object, but will throw an exception when it tries to deserialize because it is expecting a shared pointer to the object. My solution to this is to provide a constructor that takes an archive object: class Colour { // other stuff public: template<typename Archive> Colour(Archive& ar) { ar >> *this; } }; // some explicit specializations where there are // other single argument constructors The example main then becomes: int main(){ boost::shared_ptr<Colour> c = Colour::test(); std::stringstream str; boost::archive::text_oarchive oa(str); oa & *c; // ... boost::archive::text_iarchive ia(str); Colour c2(ia); } The above works and is clean in that only the Colour object is being serialized/deserialized. However, I'm not sure if it is good practice. In particular: - I presume there will be an intermediate copy of the Colour object being created by the archive object. - Passing *this to a function that takes an object of type Object from within the constructor seems like a bad thing. - In general template based constructors seems like they should be avoided. So, my question is whether my solution is reasonable or is there a better option. Regards, Dave R.

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[wave] fail to parse variadics macro
by gag maker 03 Apr '14

03 Apr '14

Hi, I'm using wave library from boost 1.53.0. Library compiled with default settings, meaning BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS is set to 1 in wave_config.cpp Wave driver is also compiled to support variadics. However, when I try to feed translation unit to wave driver it reports following error: .../compiler.h:32:1: error: ill formed preprocessor directive: #define __builtin_warning(x, y...) (1) And btw, wave driver was called with --variadics option What went wrong here? Thank you, --Alex

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[preprocessor] Undeclared identifier BOOST_PP_IIF_0 under Clang only
by Pierre Talbot 03 Apr '14

03 Apr '14

Hi, I defined a macro using Boost.Preprocessor that compiles and works fine under gcc but fails to compile under Clang. The macro is defined here: https://github.com/ptal/Boost.Expected/blob/master/include/boost/functional… And the error message follows this message, the file using the macro is https://github.com/ptal/Boost.Expected/blob/master/example/monadic_calculat… Thanks for any helps, Pierre Talbot Boost.Expected/example/monadic_calculator$ b2 ...patience... ...found 1246 targets... ...updating 2 targets... clang-linux.compile.c++.without-pth bin/clang-linux-3.5.0/debug/monadic_calculator.o monadic_calculator.cpp:141:15: error: use of undeclared identifier 'BOOST_PP_IIF_0' etokens = DO( ^ ../../include/boost/functional/do_yield.hpp:100:17: note: expanded from macro 'DO' #define DO(...) DO_SEQ(BOOST_PP_VARIADIC_TO_SEQ(__VA_ARGS__)) ^ ../../include/boost/functional/do_yield.hpp:97:3: note: expanded from macro 'DO_SEQ' BOOST_PP_SEQ_FOR_EACH_I(DO_ELEM, seq, seq) \ ^ /usr/local/boost_1_55_0/boost/preprocessor/seq/for_each_i.hpp:27:55: note: expanded from macro 'BOOST_PP_SEQ_FOR_EACH_I' # define BOOST_PP_SEQ_FOR_EACH_I(macro, data, seq) BOOST_PP_FOR((macro, data, seq (nil), 0), BOOST_PP_SEQ_FOR_EACH_I_P, BOOST_PP_SEQ_FOR_EACH_I_O, BOOST_PP_SEQ_FOR_EACH_I_M) ^ /usr/local/boost_1_55_0/boost/preprocessor/repetition/for.hpp:27:23: note: expanded from macro 'BOOST_PP_FOR' # define BOOST_PP_FOR BOOST_PP_CAT(BOOST_PP_FOR_, BOOST_PP_AUTO_REC(BOOST_PP_FOR_P, 256)) ^ /usr/local/boost_1_55_0/boost/preprocessor/cat.hpp:22:32: note: expanded from macro 'BOOST_PP_CAT' # define BOOST_PP_CAT(a, b) BOOST_PP_CAT_I(a, b) ^ /usr/local/boost_1_55_0/boost/preprocessor/cat.hpp:29:34: note: expanded from macro 'BOOST_PP_CAT_I' # define BOOST_PP_CAT_I(a, b) a ## b ^ <scratch space>:130:1: note: expanded from here BOOST_PP_FOR_1 ^ /usr/local/boost_1_55_0/boost/preprocessor/repetition/detail/for.hpp:22:37: note: expanded from macro 'BOOST_PP_FOR_1' # define BOOST_PP_FOR_1(s, p, o, m) BOOST_PP_FOR_1_C(BOOST_PP_BOOL(p(2, s)), s, p, o, m) ^ /usr/local/boost_1_55_0/boost/preprocessor/repetition/detail/for.hpp:279:42: note: expanded from macro 'BOOST_PP_FOR_1_C' # define BOOST_PP_FOR_1_C(c, s, p, o, m) BOOST_PP_IIF(c, m, BOOST_PP_TUPLE_EAT_2)(2, s) BOOST_PP_IIF(c, BOOST_PP_FOR_2, BOOST_PP_TUPLE_EAT_4)(BOOST_PP_EXPR_IIF(c, o)(2, s), p, o, m) ^ /usr/local/boost_1_55_0/boost/preprocessor/control/iif.hpp:18:37: note: expanded from macro 'BOOST_PP_IIF' # define BOOST_PP_IIF(bit, t, f) BOOST_PP_IIF_I(bit, t, f) ^ /usr/local/boost_1_55_0/boost/preprocessor/control/iif.hpp:25:39: note: expanded from macro 'BOOST_PP_IIF_I' # define BOOST_PP_IIF_I(bit, t, f) BOOST_PP_IIF_ ## bit(t, f) ^ <scratch space>:136:1: note: expanded from here BOOST_PP_IIF_0 ^

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