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Problem compiling boost::iostreams - bzlib.h file not found
by Tim Taylor 31 Aug '05

31 Aug '05

I have just downloaded boost 1.33.0 and am doing a bulk-standard install on my linux PC as per the instructions, with the command: bjam "-sTOOLS=gcc" install Nearly everything worked fine, but the iostreams library failed to compile, with the error in boost_1_33_0/libs/iostreams/src/bzip2.cpp: could not find include file "bzlib.h" On further investigation, this file comes from the package libbzip2_1-devel, which also needs to be installed. An extra thought: bzip2.cpp includes this file as #include "bzlib.h" but it should really be #include <bzlib.h> as this is from a different library. Tim

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boost::lambda::bind operator = std::vector sucess, bnu::vector and std::valarray fail
by pviallet＠yahoo.fr 31 Aug '05

31 Aug '05

I’m just starting to use boost::lambda an boost::lambda::bind, and I do not understand why this do not work whith bnuy::vector && std::valarray : class CToto{ public: CToto(double _i): a(_i) {} CToto(): a(0.0) {} double get() const {return a;} private: double a; }; std::vector<std::CToto *> aTotoPtrVect; aTotoPtrVect.push_back(new std::CToto(1.1)); aTotoPtrVect.push_back(new std::CToto(2.2)); aTotoPtrVect.push_back(new std::CToto(3.3)); aTotoPtrVect.push_back(new std::CToto(4.4)); //case 1 std::vector <double> dv(std::distance((aTotoVect.begin(), aTotoVect.end()); std::for_each(aTotoPtrVect.begin(), aTotoPtrVect.end(), bll::var(dv)[bll::var(uiIdx)++] = bll::bind(&CToto::get, bll::_1)); // work fine //case 2 double d(4) std::for_each(aTotoPtrVect.begin(), aTotoPtrVect.end(), bll::var(d)[bll::var(uiIdx)++] = bll::bind(&CToto::get, bll::_1)); // work fine //case 3 std::valaray <double> dvv(std::distance((aTotoVect.begin(), aTotoVect.end()); std::for_each(aTotoPtrVect.begin(), aTotoPtrVect.end(), bll::var(dvv)[bll::var(uiIdx)++] = bll::bind(&CToto::get, bll::_1)); // do not compile //case 4 bnu::vector<double> bvv(std::distance((aTotoVect.begin(), aTotoVect.end()); std::for_each(aTotoPtrVect.begin(), aTotoPtrVect.end(), bll::var(bvv)[bll::var(uiIdx)++] = bll::bind(&CToto::get, bll::_1)); // do not compile Is someone could explain me why it work in 1 and 2 ?

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boost::date_time GMT/UTC question
by Leon Mergen 31 Aug '05

31 Aug '05

Hello, Simple/quick question: is boost::posix_time::ptime boost::posix_time::second_clock::universal_time(), which is described as UTC in the boost manual page, equal to GMT? If not, what is the difference between UTC and GMT? As I understood it, UTC is the "new" name for GMT, but I'm not sure. Regards, Leon

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Re: [Boost-users] Boost-users] boost::date_time GMT/UTC question
by Christopher Hunt 31 Aug '05

31 Aug '05

Sorry about my previous post - I don't know quite what happened but it didn't include the intended response. What I meant to state was that for most applications, UTC and GMT can be regarded as the same. Here's a good explanation on UTC: http://en.wikipedia.org/wiki/Utc Cheers, -C

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Re: [Boost-users] Regex boost 1.33 - (mingw/w32) linking
by Arno Mauhourat 31 Aug '05

31 Aug '05

> Well there's something wrong at your end, because it works for me: > > cd libs/regex/example/grep > g++ -I../../../.. -c -o grep.o grep.cpp > g++ -o grep.exe grep.o > 'C:\data\boost\develop\boost\bin\boost\libs\regex\build\libboost_regex.lib\mingw\debug\threading-multi\libboost_regex-mgw-mt-d-1_33.lib' > 'C:\data\boost\develop\boost\bin\boost\libs\program_options\build\libboost_program_options.lib\mingw\debug\threading-multi\libboost_program_options-mgw-mt-d-1_33.lib' > -g3 > > compiles and links cleanly with the current MinGW release. > > John. > Thanks John, for your time and quick answers. I found the issue: I compiled "grep.cpp" with -O3 and this leads to: - error at linking on debug version of the library (libboost_regex-mgw-mt-d-1_33.lib) - OK linking with non-debug version (libboost_regex-mgw-mt-1_33.lib) I am quite unfamiliar with g++ (and it is quite off topic here) but seems strange to me that an optimization level ruins a linking... Arno

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Re: [Boost-users] Boost::multiIndex container problems
by JOAQUIN LOPEZ MU?Z 31 Aug '05

31 Aug '05

> I tried putting the boost::multi_index::member<> in bare and it > resulted in > the error, regardless of if I hit 'build' or 'rebuild' solution. Weird!! I'd be greateful if you could pursue this a little more. The macro looks like (the second branch is that matters): #if defined(BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS) #define BOOST_MULTI_INDEX_MEMBER(Class,Type,MemberName) \ ::boost::multi_index::member_offset<Class,Type,offsetof (Class,MemberName)> #else #define BOOST_MULTI_INDEX_MEMBER(Class,Type,MemberName) \ ::boost::multi_index::member<Class,Type,&Class::MemberName> #endif The only difference with the bare member call I can see is the full qualification, with a beginning :: included. Could you see if this makes any difference? Thanks! Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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undefined symbols in the interval library
by Matei Stroila 31 Aug '05

31 Aug '05

Using Visual Studio 7.1 and boost_1_33_0, I am getting the following undefined symbol while trying to run an application that uses the interval_lib: error LNK2019: unresolved external symbol _rint referenced in function "public: static double __cdecl boost::numeric::interval_lib::detail::x86_rounding::to_int(double const &)" (?to_int@x86_rounding@detail@interval_lib@numeric@boost@@SANABN@Z) On the other hand, the same code is compiled and runs fine on my powerbook (gcc and the boost same library version). Thanks for help, Matei

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Seg fault when using serialization library
by Sebastien Gerega 31 Aug '05

31 Aug '05

I am running FC4 with gcc4.0.1 and I installed boost-devel using yum. When I compile with gcc and run the serialization example located at http://www.boost.org/libs/serialization/example/demo.cpp I have no problems. However, the project I am working on requires that I use compatgcc32 for compilation. When I compile with gcc32 and run the same example I get the following output with a seg fault: original schedule 6:24 bob 0x0x8ede5b8 34\uffff135'52.56" 134\uffff22'78.3" 24th Street and 10th Avenue 0x0x8ede5e0 35\uffff137'23.456" 133\uffff35'54.12" State street and Cathedral Vista Lane 0x0x8edeb50 35\uffff136'15.456" 133\uffff32'15.3" White House 9:57 bob 0x0x8ede5b8 34\uffff135'52.56" 134\uffff22'78.3" 24th Street and 10th Avenue 0x0x8ede5e0 35\uffff137'23.456" 133\uffff35'54.12" State street and Cathedral Vista Lane 0x0x8edeb50 35\uffff136'15.456" 133\uffff32'15.3" White House 11:2 alice 0x0x8ede5b8 34\uffff135'52.56" 134\uffff22'78.3" 24th Street and 10th Avenue 0x0x8ede5e0 35\uffff137'23.456" 133\uffff35'54.12" State street and Cathedral Vista Lane 0x0x8edeb50 35\uffff136'15.456" 133\uffff32'15.3" White House 7:17 ted 0x0x8edeb78 35\uffff134'48.789" 133\uffff32'16.23" Lincoln Memorial 0x0x8edeb50 35\uffff136'15.456" 133\uffff32'15.3" White House 0x0x8ede5e0 35\uffff137'23.456" 133\uffff35'54.12" State street and Cathedral Vista Lane 9:38 ted 0x0x8edeb78 35\uffff134'48.789" 133\uffff32'16.23" Lincoln Memorial 0x0x8edeb50 35\uffff136'15.456" 133\uffff32'15.3" White House 0x0x8ede5e0 35\uffff137'23.456" 133\uffff35'54.12" State street and Cathedral Vista Lane 11:47 alice 0x0x8edeb78 35\uffff134'48.789" 133\uffff32'16.23" Lincoln Memorial 0x0x8edeb50 35\uffff136'15.456" 133\uffff32'15.3" White House Segmentation fault I am guessing this is because of different compilers being used or different versions of libstdc++ being required but I am able to compile and run examples using other Boost libraries without problems. Is there any way around this? thanks, Sebastien Gerega

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Re: [Boost-users] Boost-users] boost::date_time GMT/UTC question
by Christopher Hunt 31 Aug '05

31 Aug '05

On 31/08/2005, at 8:07 AM, boost-users-request(a)lists.boost.org wrote: > Simple/quick question: is boost::posix_time::ptime > boost::posix_time::second_clock::universal_time(), which is > described as > UTC in the boost manual page, equal to GMT? If not, what is the > difference between UTC and GMT? > > As I understood it, UTC is the "new" name for GMT, but I'm not sure. * * * Showpiece your Palm device and instantly access world times using our beautiful 3 dimensional globe http://www.classactionpl.com/

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boost::thread state check
by Ovanes Markarian 30 Aug '05

30 Aug '05

Can someone please provide an example how one can test if a started thread is still running or is done? With Kind Regards, Ovanes Markarian

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