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[Interprocess] robust mutex support
by Gábor Márton 14 Mar '13

14 Mar '13

Hi, I would like to take the advantages of the robust pthread mutex attribute. Is it possible in 1.53? If no, are there any plans to implement robust mutex support in Interprocess, in future releases? Note: I've found the following discussion http://boost.2283326.n4.nabble.com/boost-interprocess-gt-1-45-robust-mutexe… Based on this, I should modify the file boost/interprocess/sync/posix/pthread_helpers.hpp, but I don't want to create an unofficial patch to the boost libs. Thanks, Gabor

1 0

[Smart pointers] BOOST_SP_HAS_SYNC undefined on ARM
by Vaclav Barta 14 Mar '13

14 Mar '13

Hi, I've been looking at some traces of our Android app (which is mostly native and extensively uses boost) and was surprised to find it uses spinlocks around the reference count of boost::shared_ptr. So I've checked the boost sources and found boost/smart_ptr/detail/atomic_count.hpp choosing the implementation depending on platform and other #defines, of which BOOST_SP_HAS_SYNC sounded like it should be turned on (Google recommends using gcc __sync_* intrinsics on Android). But, boost/smart_ptr/detail/sp_has_sync.hpp requires either __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 (which the Google cross-compiler apparently doesn't have), or (for recent gcc) #define BOOST_SP_HAS_SYNC #if defined( __arm__ ) || defined( __armel__ ) #undef BOOST_SP_HAS_SYNC #endif Why not use the intrinsics on ARM? Are they broken? For all ARM variants, or just some (ideally some old ones - I cound ignore them then)? Or are the intrinsics' semantics incompatible with the way boost atomic count needs? Bye Vasek -- http://www.mangrove.cz/

1 0

Supressing GCCs 'MACRONAME' is not defined [-Wundef]
by Roman Himmes 13 Mar '13

13 Mar '13

Hi! After compiling boost_1_53_0 I got a lot of MACROS are not defined messages compiling my project. To suppress those warnings I changed the boost/config.hpp and appended: #define BOOST_MPL_HAS_XXX_NO_EXPLICIT_TEST_FUNCTION 0 #define BOOST_MPL_HAS_XXX_NO_WRAPPED_TYPES 0 #define BOOST_MPL_HAS_XXX_NO_EXPLICIT_TEST_FUNCTION 0 #define BOOST_MPL_HAS_XXX_NEEDS_TEMPLATE_SFINAE 0 #define BOOST_PP_VARIADICS_MSVC 0 #define BOOST_IOSTREAMS_GCC_WORKAROUND_GUARD 0 #define BOOST_SELECT_BY_SIZE_MAX_CASE 0 #define BOOST_PP_VARIADICS_MSVC 0 #define BOOST_FT_CC_IMPLICIT 0 #define BOOST_FT_CC_CDECL 0 #define BOOST_FT_CC_STDCALL 0 #define BOOST_FT_CC_PASCAL 0 #define BOOST_FT_CC_FASTCALL 0 #define BOOST_FT_CC_CLRCALL 0 #define BOOST_FT_CC_THISCALL 0 #define BOOST_FT_CC_IMPLICIT_THISCALL 0too I realize that this is very dangerous and definitly not the way to go. Any Idea how to suppress those warnings correctly? I am using Arch-Linux with gcc-4.7.2. I compiled boost with (as far as I remember): ./b2 toolset=gcc cxxflags=-std=c++11 link=static stage Best Regards, Roman Himmes -- Softwareentwicklung iDev GmbH Spichernstr. 73 50672 Köln Tel: +49 221 / 222 858-0 Fax: +49 221 / 222 858-20 E-Mail: himmes(a)idev.de WWW: www.idev.de AG Köln HRB 58720 Geschäftsführung: Michael Mertens

3 2

[serialization] C alternative for boost serialization
by Arash Abghari 13 Mar '13

13 Mar '13

Hi, We are heavily using boost serialization and verty happy with that. But we need to port some of our code to an embedded system where there is no c++ compiler available. Can anyone suggest an alternative C library for serialization? Thanks, Arash

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[Format] NaN values?
by John M. Dlugosz 13 Mar '13

13 Mar '13

Hmm, might boost::format("%.1f") be producing a result of "-1.$" when fed a NAN? It looks suspiciously like the string "-1.#INF" mentioned in printf formatting documentation.

1 0

Building Boost for iOS projects
by Daniel Ford 12 Mar '13

12 Mar '13

I'm trying to use some of the compiled boost libraries for an iOS project. Ideally, it would be nice to get a framework, but getting anything which works would be great. I've tried following the instructions here http://goodliffe.blogspot.com/2010/09/building-boost-framework-for-ios-ipho…<http://www.google.com/url?q=http%3A%2F%2Fgoodliffe.blogspot.com%2F2010%2F09…> to build a boost framework, making the obvious changes to the version numbers of the SDK and Boost, and swapping the compiler to llvm-gcc-4.2 because I don't seem to have gcc-4.2. However, I get errors like this: boostoniphone/src/boost_1_52_0/tools/build/v2/build/feature.jam:767: in expand-composites from module feature error: explicitly-specified values of non-free feature <toolset-darwin:version> conflict error: existing values: 4.2.1~iphonesim 6.0.0~iphonesim error: value from expanding <toolset-darwin:version>6.0.0~iphonesim : 6.0.0~iphonesim I've also been trying this approach here http://www.a-coding.com/2011/01/building-boost-for-ios.html<http://www.google.com/url?q=http%3A%2F%2Fwww.a-coding.com%2F2011%2F01%2Fbui…> which seems to be building most of the .a files OK. I'm not particularly experienced with build systems and libraries (I do algorithms and statistics usually) so I have a few of questions: Is there some obvious way to make the framework script work? Is there some way to just use the .a files I'm getting from the second approach and bundle them up? Or do I just add the .a files generated by the second approach to my project and be done with it? Has anyone else done this by another method, or can suggest how to set user-config.jam to get the libraries I want? Thanks, Daniel

1 0

program_options - example will not compile
by Neil Sutton 12 Mar '13

12 Mar '13

I have the following: 1. */usr/local/lib/* which contains libboost_program_options.a libboost_program_options.so libboost_program_options.so_1.53.0 2. /usr/local/include/boost that contains program_options.hpp I want to compile this file which can be found in boost /libs/program_options/examples: ---------------------------------- // Copyright Vladimir Prus 2002-2004. // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt // or copy at http://www.boost.org/LICENSE_1_0.txt) /* The simplest usage of the library. */ #include <boost/program_options.hpp> namespace po = boost::program_options; #include <iostream> #include <iterator> using namespace std; int main(int ac, char* av[]) { try { po::options_description desc("Allowed options"); desc.add_options() ("help", "produce help message") ("compression", po::value<double>(), "set compression level") ; po::variables_map vm; po::store(po::parse_command_line(ac, av, desc), vm); po::notify(vm); if (vm.count("help")) { cout << desc << "\n"; return 0; } if (vm.count("compression")) { cout << "Compression level was set to " << vm["compression"].as<double>() << ".\n"; } else { cout << "Compression level was not set.\n"; } } catch(exception& e) { cerr << "error: " << e.what() << "\n"; return 1; } catch(...) { cerr << "Exception of unknown type!\n"; } return 0; } ----------------------------- A. g++ error. This is the command I am using with g++ g++ first.cpp -o first -L/usr/local/lib/libboost_program_options.so and this is the error output: ------------ /tmp/cctMoqyr.o: In function `main': first.cpp:(.text+0x1a): undefined reference to `boost::program_options::options_description::m_default_line_length' first.cpp:(.text+0x2a): undefined reference to `boost::program_options::options_description::m_default_line_length' first.cpp:(.text+0x72): undefined reference to `boost::program_options::options_description::options_description(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned int, unsigned int)' first.cpp:(.text+0xed): undefined reference to `boost::program_options::options_description::add_options()' first.cpp:(.text+0x10b): undefined reference to `boost::program_options::options_description_easy_init::operator()(char const*, char const*)' first.cpp:(.text+0x127): undefined reference to `boost::program_options::options_description_easy_init::operator()(char const*, boost::program_options::value_semantic const*, char const*)' first.cpp:(.text+0x135): undefined reference to `boost::program_options::variables_map::variables_map()' first.cpp:(.text+0x191): undefined reference to `boost::program_options::store(boost::program_options::basic_parsed_options<char> const&, boost::program_options::variables_map&, bool)' first.cpp:(.text+0x1e6): undefined reference to `boost::program_options::notify(boost::program_options::variables_map&)' first.cpp:(.text+0x28b): undefined reference to `boost::program_options::operator<<(std::basic_ostream<char, std::char_traits<char> >&, boost::program_options::options_description const&)' /tmp/cctMoqyr.o: In function `boost::program_options::error_with_option_name::~error_with_option_name()': first.cpp:(.text._ZN5boost15program_options22error_with_option_nameD2Ev[boost::program_options::error_with_option_name::~error_with_option_name()]+0xd): undefined reference to `vtable for boost::program_options::error_with_option_name' /tmp/cctMoqyr.o: In function `boost::program_options::validation_error::validation_error(boost::program_options::validation_error::kind_t, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)': first.cpp:(.text._ZN5boost15program_options16validation_errorC1ENS1_6kind_tERKSsS4_i[boost::program_options::validation_error::validation_error(boost::program_options::validation_error::kind_t, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)]+0x1d): undefined reference to `boost::program_options::validation_error::get_template(boost::program_options::validation_error::kind_t)' first.cpp:(.text._ZN5boost15program_options16validation_errorC1ENS1_6kind_tERKSsS4_i[boost::program_options::validation_error::validation_error(boost::program_options::validation_error::kind_t, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)]+0x47): undefined reference to `boost::program_options::error_with_option_name::error_with_option_name(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)' /tmp/cctMoqyr.o: In function `boost::program_options::value_semantic_codecvt_helper<char>::value_semantic_codecvt_helper()': first.cpp:(.text._ZN5boost15program_options29value_semantic_codecvt_helperIcEC2Ev[boost::program_options::value_semantic_codecvt_helper<char>::value_semantic_codecvt_helper()]+0x16): undefined reference to `vtable for boost::program_options::value_semantic_codecvt_helper<char>' /tmp/cctMoqyr.o: In function `boost::program_options::value_semantic_codecvt_helper<char>::~value_semantic_codecvt_helper()': first.cpp:(.text._ZN5boost15program_options29value_semantic_codecvt_helperIcED2Ev[boost::program_options::value_semantic_codecvt_helper<char>::~value_semantic_codecvt_helper()]+0xb): undefined reference to `vtable for boost::program_options::value_semantic_codecvt_helper<char>' /tmp/cctMoqyr.o: In function `boost::program_options::variables_map::operator[](std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const': first.cpp:(.text._ZNK5boost15program_options13variables_mapixERKSs[boost::program_options::variables_map::operator[](std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const]+0x14): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' /tmp/cctMoqyr.o: In function `boost::program_options::variables_map::~variables_map()': first.cpp:(.text._ZN5boost15program_options13variables_mapD1Ev[boost::program_options::variables_map::~variables_map()]+0xd): undefined reference to `vtable for boost::program_options::variables_map' /tmp/cctMoqyr.o: In function `boost::program_options::basic_command_line_parser<char>::basic_command_line_parser(int, char const* const*)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcEC1EiPKPKc[boost::program_options::basic_command_line_parser<char>::basic_command_line_parser(int, char const* const*)]+0x6b): undefined reference to `boost::program_options::detail::cmdline::cmdline(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&)' /tmp/cctMoqyr.o: In function `boost::program_options::basic_command_line_parser<char>::options(boost::program_options::options_description const&)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE7optionsERKNS0_19options_descriptionE[boost::program_options::basic_command_line_parser<char>::options(boost::program_options::options_description const&)]+0x14): undefined reference to `boost::program_options::detail::cmdline::set_options_description(boost::program_options::options_description const&)' /tmp/cctMoqyr.o: In function `boost::program_options::basic_command_line_parser<char>::style(int)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE5styleEi[boost::program_options::basic_command_line_parser<char>::style(int)]+0x14): undefined reference to `boost::program_options::detail::cmdline::style(int)' /tmp/cctMoqyr.o: In function `boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>)': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE12extra_parserENS_9function1ISt4pairISsSsERKSsEE[boost::program_options::basic_command_line_parser<char>::extra_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>)]+0x28): undefined reference to `boost::program_options::detail::cmdline::set_additional_parser(boost::function1<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&>)' /tmp/cctMoqyr.o: In function `boost::program_options::basic_command_line_parser<char>::run()': first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE3runEv[boost::program_options::basic_command_line_parser<char>::run()]+0x12): undefined reference to `boost::program_options::detail::cmdline::get_canonical_option_prefix()' first.cpp:(.text._ZN5boost15program_options25basic_command_line_parserIcE3runEv[boost::program_options::basic_command_line_parser<char>::run()]+0x3d): undefined reference to `boost::program_options::detail::cmdline::run()' /tmp/cctMoqyr.o: In function `std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > boost::program_options::to_internal<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&)': first.cpp:(.text._ZN5boost15program_options11to_internalISsEESt6vectorISsSaISsEERKS2_IT_SaIS5_EE[std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > boost::program_options::to_internal<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&)]+0x3c): undefined reference to `boost::program_options::to_internal(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost15program_options11typed_valueIdcEE[vtable for boost::program_options::typed_value<double, char>]+0x1c): undefined reference to `boost::program_options::value_semantic_codecvt_helper<char>::parse(boost::any&, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, bool) const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost15program_options20invalid_option_valueE[vtable for boost::program_options::invalid_option_value]+0x10): undefined reference to `boost::program_options::error_with_option_name::what() const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost15program_options20invalid_option_valueE[vtable for boost::program_options::invalid_option_value]+0x18): undefined reference to `boost::program_options::error_with_option_name::substitute_placeholders(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost15program_options16validation_errorE[vtable for boost::program_options::validation_error]+0x10): undefined reference to `boost::program_options::error_with_option_name::what() const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost15program_options16validation_errorE[vtable for boost::program_options::validation_error]+0x18): undefined reference to `boost::program_options::error_with_option_name::substitute_placeholders(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' /tmp/cctMoqyr.o:(.rodata._ZTIN5boost15program_options11typed_valueIdcEE[typeinfo for boost::program_options::typed_value<double, char>]+0x10): undefined reference to `typeinfo for boost::program_options::value_semantic_codecvt_helper<char>' /tmp/cctMoqyr.o:(.rodata._ZTIN5boost15program_options16validation_errorE[typeinfo for boost::program_options::validation_error]+0x8): undefined reference to `typeinfo for boost::program_options::error_with_option_name' /tmp/cctMoqyr.o: In function `boost::program_options::typed_value<double, char>::name() const': first.cpp:(.text._ZNK5boost15program_options11typed_valueIdcE4nameEv[boost::program_options::typed_value<double, char>::name() const]+0x1f): undefined reference to `boost::program_options::arg' /tmp/cctMoqyr.o: In function `void boost::program_options::validate<double, char>(boost::any&, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, double*, long)': first.cpp:(.text._ZN5boost15program_options8validateIdcEEvRNS_3anyERKSt6vectorISbIT0_St11char_traitsIS5_ESaIS5_EESaIS9_EEPT_l[void boost::program_options::validate<double, char>(boost::any&, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, double*, long)]+0xf): undefined reference to `boost::program_options::validators::check_first_occurrence(boost::any const&)' first.cpp:(.text._ZN5boost15program_options8validateIdcEEvRNS_3anyERKSt6vectorISbIT0_St11char_traitsIS5_ESaIS5_EESaIS9_EEPT_l[void boost::program_options::validate<double, char>(boost::any&, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, double*, long)]+0x92): undefined reference to `boost::program_options::invalid_option_value::invalid_option_value(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/cctMoqyr.o: In function `boost::program_options::error_with_option_name::error_with_option_name(boost::program_options::error_with_option_name const&)': first.cpp:(.text._ZN5boost15program_options22error_with_option_nameC2ERKS1_[boost::program_options::error_with_option_name::error_with_option_name(boost::program_options::error_with_option_name const&)]+0x1f): undefined reference to `vtable for boost::program_options::error_with_option_name' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail10clone_implINS0_19error_info_injectorINS_15program_options16validation_errorEEEEE[vtable for boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::program_options::validation_error> >]+0x14): undefined reference to `boost::program_options::error_with_option_name::what() const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail10clone_implINS0_19error_info_injectorINS_15program_options16validation_errorEEEEE[vtable for boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::program_options::validation_error> >]+0x1c): undefined reference to `boost::program_options::error_with_option_name::substitute_placeholders(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail19error_info_injectorINS_15program_options16validation_errorEEE[vtable for boost::exception_detail::error_info_injector<boost::program_options::validation_error>]+0x10): undefined reference to `boost::program_options::error_with_option_name::what() const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail19error_info_injectorINS_15program_options16validation_errorEEE[vtable for boost::exception_detail::error_info_injector<boost::program_options::validation_error>]+0x18): undefined reference to `boost::program_options::error_with_option_name::substitute_placeholders(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail10clone_implINS0_19error_info_injectorINS_15program_options20invalid_option_valueEEEEE[vtable for boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::program_options::invalid_option_value> >]+0x14): undefined reference to `boost::program_options::error_with_option_name::what() const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail10clone_implINS0_19error_info_injectorINS_15program_options20invalid_option_valueEEEEE[vtable for boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::program_options::invalid_option_value> >]+0x1c): undefined reference to `boost::program_options::error_with_option_name::substitute_placeholders(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail19error_info_injectorINS_15program_options20invalid_option_valueEEE[vtable for boost::exception_detail::error_info_injector<boost::program_options::invalid_option_value>]+0x10): undefined reference to `boost::program_options::error_with_option_name::what() const' /tmp/cctMoqyr.o:(.rodata._ZTVN5boost16exception_detail19error_info_injectorINS_15program_options20invalid_option_valueEEE[vtable for boost::exception_detail::error_info_injector<boost::program_options::invalid_option_value>]+0x18): undefined reference to `boost::program_options::error_with_option_name::substitute_placeholders(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const' collect2: ld returned 1 exit status ---------------------- B. Clang error. I tried using clang instead with this command: clang first.cpp -o first -L/usr/local/lib/libboost_program_options.so and this is the error I get: In file included from first.cpp:9: In file included from /usr/local/include/boost/program_options.hpp:15: In file included from /usr/local/include/boost/program_options/options_description.hpp:13: In file included from /usr/local/include/boost/program_options/value_semantic.hpp:14: In file included from /usr/local/include/boost/lexical_cast.hpp:151: /usr/include/c++/4.4/cmath:518:14: error: cannot compile this builtin function yet return __builtin_isinf(__type(__f)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 diagnostic generated. ---------------------------- How can this be fixed?

2 1

[fusion] filter_if at run-time???
by Jeff Flinn 12 Mar '13

12 Mar '13

I've got a fusion set say: set<int, optional<double>, bool> s(...) I'd like to filter out empty optional<double> values when streaming out: std::cout << s; so for s(1, 2.0, true) ==> (1,2.0,true) and for s(3, optional<double>(), false) ==> (2,false) filter_if's predicate is an a Metafunction returning mpl::bool_ so it looks to me like this won't support run time? Is there another facility that would achieve the above? Thanks, Jeff

2 2

Compiled Boost with MPI
by julien.plu＠redaction-developpez.com 12 Mar '13

12 Mar '13

Hi, For my project I saw today that I needed MPI too. So I installed MPICH2 and Changed my < user-config.jam > file like that : import toolset : using ; using python : 2.7 : "C:/Python273" : "C:/Python273/include" : "C:/Python273/libs" ; using mpi : : <find-static-library>mpi <library-path>"C:/librairies/MPICH2-3.0.2/lib" <include>"C:/librairies/MPICH2-3.0.2/include" : "\"C:\\librairies\\MPICH2-3.0.2\\bin\\mpiexec\"" ; So I compile Boost with this command line : b2 toolset=gcc --j4 --layout=system release --prefix=C:\librairies\boost-1.53.0 --user-config=user-config.jam install And the error is in the out.txt file in attachment. Anyone know what's happenned ? Thanks in advance. Julien.

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[geometry] Documentation error regarding geographical coordinate system?
by Jason 12 Mar '13

12 Mar '13

In the "Quick Start" section of the Boost.Geometry documentation, there is the following note under the "Non-Cartesian" header: Boost.Geometry supports a geographical coordinate system, but that is in an extension and not released in the current Boost release. boost::geometry::cs::geographic does seem to be in the v1.53 release. Is this just a remnant from legacy documentation, or are there some gotchas to be expected with the geographic coordinate system support? Jason -- View this message in context: http://boost.2283326.n4.nabble.com/geometry-Documentation-error-regarding-g… Sent from the Boost - Users mailing list archive at Nabble.com.

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