- Boost-users - lists.boost.org

Newbie Question - Errors if i want to compile using g++
by mix＠openflex.net 21 Jul '05

21 Jul '05

Hi all, I'm a newbie in c++ and in boost too, but i want to learn ;) I've installed boost via apt and also with "hand-compile" but it doesn't run anyway.. here my code: -------------------- #include <iostream> #include <boost/regex.hpp> using namespace boost; using namespace std; int main() { const boost::regex e("PING\\s:\\S+"); cmatch match; if(boost::regex_match("PING :jgWEjg",match,e)) { cout << "PONG :" << match[1]; } return 0; } -------------------- then i want to compile it with ""g++ main.cc -o test" and these errors appeared: -------------------- /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEED1Ev+0xd): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::~basic_regex [in-charge]()': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::~reg_expression [not-in-charge]()' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEEC1EPKcjRKS3_+0x22): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::basic_regex[in-charge](char const*, unsigned, std::allocator<char> const&)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::reg_expression[not-in-charge](char const*, unsigned, std::allocator<char> const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEEC1ES3_S3_RNS_ 13match_resultsIS3_S6_EERKNS_14reg_expressionIcS8_S9_EENS_15regex_constants12_match_flagsE+0x53): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::perl_matcher[in-charge](char const*, char const*, boost::match_results<char const*, std::allocator<boost::sub_match<char const*> > >&, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&, boost::regex_constants::_match_flags)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_traits() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEEC1ES3_S3_RNS_ 13match_resultsIS3_S6_EERKNS_14reg_expressionIcS8_S9_EENS_15regex_constants12_match_flagsE+0x85): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::perl_matcher[in-charge](char const*, char const*, boost::match_results<char const*, std::allocator<boost::sub_match<char const*> > >&, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&, boost::regex_constants::_match_flags)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::empty() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE24estimate_ma x_state_countEPSt26random_access_iterator_tag+0x2b): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::estimate_max_state_count(std::random_access_iterator_tag*)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::size() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE9match_impEv+ 0x8c): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::match_imp()': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::mark_count() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE9match_impEv+ 0x12c): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::match_imp()': : undefined reference to `boost::re_detail::verify_options(unsigned, boost::regex_constants::_match_flags)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail15save_state_initC1EPPNS0_11saved_stateES4_+0x13): In function `boost::re_detail::save_state_init::save_state_init[in-charge](boost::re_detail::saved_state**, boost::re_detail::saved_state**)': : undefined reference to `boost::re_detail::get_mem_block()' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail15save_state_initD1Ev+0x11): In function `boost::re_detail::save_state_init::~save_state_init [in-charge]()': : undefined reference to `boost::re_detail::put_mem_block(void*)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE5firstERKNS_14reg_expressionIcS3_S4_EE+0xd) : In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::first(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::first(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE18unwind_extr a_blockEb+0x48): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::unwind_extra_block(bool)': : undefined reference to `boost::re_detail::put_mem_block(void*)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_12regex_traitsIcEEEEvRKT_j+0x15): In function `void boost::re_detail::raise_error<boost::regex_traits<char> >(boost::regex_traits<char> const&, unsigned)': : undefined reference to `boost::re_detail::c_traits_base::error_string(unsigned)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_12regex_traitsIcEEEEvRKT_j+0x23): In function `void boost::re_detail::raise_error<boost::regex_traits<char> >(boost::regex_traits<char> const&, unsigned)': : undefined reference to `boost::re_detail::raise_regex_exception(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost14c_regex_traitsIcE9translateEcb+0x1f): In function `boost::c_regex_traits<char>::translate(char, bool)': : undefined reference to `boost::re_detail::c_traits_base::lower_case_map' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail16re_is_set_memberIPKccNS_12regex_traitsIcEESaIcEEET_S7_S7_PKNS0_11re_set_longERK NS_14reg_expressionIT0_T1_T2_EE+0x3d): In function `char const* boost::re_detail::re_is_set_member<char const*, char, boost::regex_traits<char>, std::allocator<char> >(char const*, char const*, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_traits() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail16re_is_set_memberIPKccNS_12regex_traitsIcEESaIcEEET_S7_S7_PKNS0_11re_set_longERK NS_14reg_expressionIT0_T1_T2_EE+0x244): In function `char const* boost::re_detail::re_is_set_member<char const*, char, boost::regex_traits<char>, std::allocator<char> >(char const*, char const*, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::c_regex_traits<char>::transform(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail16re_is_set_memberIPKccNS_12regex_traitsIcEESaIcEEET_S7_S7_PKNS0_11re_set_longERK NS_14reg_expressionIT0_T1_T2_EE+0x32e): In function `char const* boost::re_detail::re_is_set_member<char const*, char, boost::regex_traits<char>, std::allocator<char> >(char const*, char const*, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::c_regex_traits<char>::transform_primary(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE9can_startEcPKhh+0x30): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::can_start(char, unsigned char const*, unsigned char)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::can_start(char, unsigned char const*, unsigned char, boost::re_detail::_narrow_type const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost14c_regex_traitsIcE8is_classEcj+0x14): In function `boost::c_regex_traits<char>::is_class(char, unsigned)': : undefined reference to `boost::re_detail::c_traits_base::class_map' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE12extend_stac kEv+0x16): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::extend_stack()': : undefined reference to `boost::re_detail::get_mem_block()' collect2: ld returned 1 exit status -------------------- so .. what i make wrong? *g* i know, bad question :) thx mix

2 1

Building Boost question
by Edward Diener 20 Jul '05

20 Jul '05

The documentation for building Boost states that one can use 'install', 'stage', or nothing on the bjam command line. But it does not explain the difference between these options other than: "none Only builds the Boost libraries. This lets you do the first part of what the install action normally does without copying the built libraries to the install location. install Builds and installs Boost libraries and headers. stage Builds the Boost libraries and copies them into a common directory." This tells me almost nothing. In the 'none' explanation, what does "copying the built libraries to the install location" mean when the install location is never specified ? In the 'install' explanation, what does "installs Boost libraries and headers" mean and why do headers need to be installed ? In the 'stage' explanation, what is the "common directory" to which Boost libraries are copied ? In general where exactly are resulting libraries put for each of these options and are header files moved anywhere also ?

3 5

Is there Boost Network library that provides...
by BRIDGES Dick 20 Jul '05

20 Jul '05

I have the following requirements. One TCP socket - R&W ("event driven": R & W request arrivals not predictable) - threadsafe. If it's of any help, readS update the local state machine in response to events external to a "server". Events external to the local device are reported back to the server via writeS. Communication in both directions is in the form of discrete "messages". OS is, let's say, Linux. An IOStream wrapper would be nice. On the other hand, I must have fairly low level control over the socket (specify interface(s) used, set various SO_*, etc.) It just doesn't seem that I should be required to roll my own to provide what appears to me to be a fairly basic set of requirements. On the other hand, I haven't seen anything on Boost that provides the features I'm looking for. It looks like the closest would be the new iostreams library *after* Jonathan Turkanis adds socket support to Boost version 1.34. Is that pretty much it? Anyone got any other ideas that might work now? Suggestions sincerely appreciated, Dick Bridges "For every complex problem, there is a solution that is simple, neat, and wrong." H.L. Mencken

1 0

boost::array MSVC 7.1 /GL bug
by Johan Råde 20 Jul '05

20 Jul '05

Hi, I just discovered a bug when using boost::array with MSVC 7.1. I have project with about 100 cpp files and 20.000 lines of code. It uses about a dozen different boost libraries. When I compile with the compiler option /GL (whole program optimization) then I get an internal compiler error. It is certainly a compiler bug. The option /GL is a somewhat experimental feature. The boost::array source code contains a templatized assignment operator with type conversion. If I add a regular assignment operator, then the code compiles. In fact, I get a clean /W4 build :-) I have tried to reproduce the bug in a smaller example, but with no success. Smaller projects compile just fine. I propose that the following lines be added to array.hpp: // assignment without type conversion (sometimes needed with MSVC 7.1 with option /GL) array<T,N>& operator= (const array<T,N>& rhs) { std::copy(rhs.begin(),rhs.end(), begin()); return *this; } --Johan Råde Department of Mathematics Lund University Lund, Sweden

1 0

beginner question about boost Unit test framework
by J Liu 20 Jul '05

20 Jul '05

I am using Boost 1.31 with VC 6.0. I am testing the simplest example provided in the boost document. It seems "boost::unit_test" is not a valid namespace. After I change it to "boost::unit_test_framwork", it can compile but can not link, the error I got is "LINK : fatal error LNK1561: entry point must be defined". The exmaple I used: #include <boost/test/unit_test.hpp> using namespace boost::unit_test; test_suite* init_unit_test_suite( int argc, char* argv[] ) { test_suite* test= BOOST_TEST_SUITE( "const_string test" ); return test; } Thanks for any help

4 9

[date-time] Local time to UTC conversion?
by Charles BROSSOLLET 20 Jul '05

20 Jul '05

Hello, I'm looking for a way to convert a local time to UTC time. I found c_local_adjustor::utc_to_local, but is there the reciprocal? thanks, -- Charles Brossollet

2 1

Re: [Boost-users] Container/Algorithm question
by JOAQUIN LOPEZ MU?Z 20 Jul '05

20 Jul '05

----- Mensaje original ----- De: Elisha Berns <e.berns(a)computer.org> Fecha: Sábado, Julio 16, 2005 3:15 am Asunto: Re: [Boost-users] Container/Algorithm question > Joaquin, > > Sorry to be the bearer of bad news, but for some reason the multi- > indexcontainer starts to fail for some larger number of pairs (a few > hundred). The container doesn't/won't insert them, and to be > honest, I > don't have a clue at this point why. The code is so simple that I fail to see how it can be failing, so let's insert some traces: std::pair<iterator,bool> insert(const value_type& x) { iterator it0=impl.find(boost::make_tuple(x.first)); if(it0!=impl.end()){ typename impl_type::nth_index_iterator<1>::type it1= impl.template get<1>().find(x.second); if(it1!=impl.template get<1>().end()){ std::cout<<x.first<<","<<x.second<<std::endl; std::cout<<it0->first<<","<<it0->second<<std::endl; std::cout<<it1->first<<","<<it1->second<<std::endl; return std::make_pair(it0,false); } } return impl.insert(x); } Can you insert the std::cout output sentences above to your code and report what it's showing? If everything is working OK, when an insertion fails, x.first==it0->first and x.second=it1->second. Isn't it so? Can you provide the data the container is fed with when the first (erroneous) insertion failure happens? > If you're up for it you > might want > to stress test the code you sent me with thousands of unique pairs and > redundant pairs. > I'll examine this closer next Monday if we haven't located the problem before. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

3 3

Serilization : Using serialization with socket++ for serializing objects over TCP connections : Problem
by nitin motgi 20 Jul '05

20 Jul '05

Hi All, I using boost::archive and socket++ libraries for serializing objects over TCP connections. Socket++ provides iosockinet class which is a derivative of iostream that supports i/o with two different buffers. Upon binding the iosockinet to a port I assign it to binary_iarchive and oarchive upon doing so .. the program aborts immediately. I am not sure what is causing this problem. Any help in this would be appreciated. ================= serialize_common.h ======================== class serialize_common { private: friend class boost::serialization::access; string name; int iVal; long lVal; unsigned int uiVal; float fVal; double dVal; template <class Archive> void serialize(Archive& ar, const unsigned int version) { ar & name; ar & iVal; ar & lVal; ar & uiVal; ar & fVal; ar & dVal; } public: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . }; ================= test.cpp ================================== /* 1. sockinetbuf is derived from sockbuf 2. iosockinet is derived from iosockstream which inturn is derived from iostream */ #include <sockinet.h> #include "serialize_common.h" int main() { serialize_common command; sockinetbuf si(sockbuf::sock_stream); si.bind(); cout << si.localhost() << ' ' << si.localport() << endl; si.listen(); while(1) { iosockinet s(si.accept()); boost::archive::binary_oarchive ao(s); <== Modifies s which comes non usable boost::archive::binary_iarchive ao(s); <== Aborts at this point char buf[1024]; while (s >> buf) { cout << buf << ' '; s << ::strlen(buf) << endl; } cout << endl; } return 0; } Thank you, Nitin

1 0

weak_ptr for intrusive_ptr's??
by Edson Tadeu 19 Jul '05

19 Jul '05

Is there an weak_ptr<> equivalent to the intrusive_ptr<>, to handle ownership cycles? Thanks.

2 1

cvs boost 1.33 date_time problem
by Serge Skorokhodov 19 Jul '05

19 Jul '05

Hi, I've built todays cvs boost library but date_time lib seems to have the same error as in 1.32 version. That is: wstring wts = _T("20021017T231217.12345"); wdate_facet* date_facet = new wdate_facet; wtime_facet* time_facet = new wtime_facet; ptime pt1( from_iso_string( convert_string_type<_TCHAR, char>(wts) ) ); long Y = pt1.date().year(); long M = pt1.date().month(); long d = pt1.date().day(); long h = pt1.time_of_day().hours(); long m = pt1.time_of_day().minutes(); long s = pt1.time_of_day().seconds(); long f = pt1.time_of_day().fractional_seconds(); wcout << L"Components of pt1:" << endl << L"Year: " << Y << endl << L"Month: " << M << endl << L"Day: " << d << endl << L"Hours: " << h << endl << L"Minutes: " << m << endl << L"Seconds: " << s << endl << L"Microseconds: " << f << endl; ptime pt2( gregorian::date(2002, 10, 17), posix_time::time_duration(23, 12, 17, 12345) ); wcout << pt2 << endl; Y = pt2.date().year(); M = pt2.date().month(); d = pt2.date().day(); h = pt2.time_of_day().hours(); m = pt2.time_of_day().minutes(); s = pt2.time_of_day().seconds(); f = pt2.time_of_day().fractional_seconds(); wcout << L"Components of pt2:" << endl << L"Year: " << Y << endl << L"Month: " << M << endl << L"Day: " << d << endl << L"Hours: " << h << endl << L"Minutes: " << m << endl << L"Seconds: " << s << endl << L"Microseconds: " << f << endl; Output is: Components of pt1: Year: 2002 Month: 10 Day: 17 Hours: 23 Minutes: 12 Seconds: 17 Microseconds: 0 2002-Oct-17 23:12:17.012345 Components of pt2: Year: 2002 Month: 10 Day: 17 Hours: 23 Minutes: 12 Seconds: 17 Microseconds: 12345 Another question is about wide char support. As far as I understand, wstring is supported only through stringstream and facets? TIA -- Serge

2 11