January 2009 - Boost-users - lists.preview.boost.org

Correctlt installing libboost*
by Robert Denton 17 Jan '09

17 Jan '09

Hi there. I am attempting to get the facebook thrift/scribe framework installed on an ubuntu 8.10 server which requires boost and libboost. I thought I'd installed boost correctly, simply by downloading the most recent tarball and doing a ./configure --prefix=/usr/local/boost and then a make install (which took about 30 minutes). However, when attempting to configure scribe with the following params, ./configure --with-boost=/usr/local/boost -with-boost-system=boost_system-gcc42-mt-1_37 -with-boost-filesystem=boost_filesystem-gcc42-mt-1_37 I ended up with an error like this as the last line of the configure output: configure: error: Could not link against boost_system-boost_system-gcc42-mt1_37 ! I am wondering if this is a known problem with this version of boost, or if anyone who listens to this list might have some advice for me. Thanks!

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[graph] topological sort of subgraph?
by Emit Sorrels 16 Jan '09

16 Jan '09

Hello, Using the File Dependency sample as an example, if I wanted the topo sorted list of dependencies for *just* libfoobar.a, is there an obvious way to do it without constructing another mini graph and calling topological_sort on it? TIA, Emit

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Re: [Boost-users] [serialization] link error and exception onget_key
by Daniel Roberts 16 Jan '09

16 Jan '09

I got the test to work but in my own code I am getting an "unregistered void cast" exception when trying to serialize the derived type. I moved the relevant classes into a separate test and made sure everything was identical to the test I made that does work (e.g. macro placement, include order) and I still get the exception. If I move the derived class definition into the header file it works. The function definitions don't even have to be inlined, they just need to be in the header. This is very weird. I am not sure you can help but if you have any ideas I would appreciate it. Thanks, Daniel Roberts I just separated things out and things seemed to work fine. The only thing that might or might not be an issue is header order: #include <boost/serialization/type_info_implementation.hpp> #include <boost/serialization/extended_type_info_no_rtti.hpp> #include <boost/serialization/export.hpp> #include "polymorphic_derived1.hpp" BOOST_CLASS_EXPORT(polymorphic_derived1) const char * polymorphic_derived1::get_key() const { return boost::serialization::type_info_implementation< polymorphic_derived1 >::type::get_const_instance().get_key(); } Notice I specified extended_type_info_no_rtti.hpp before export.hpp. If I remember correctly, if no type id system header is specified before export is encountered the system may take the rtti one as the default. Since we're not using defaults in this example, its probably not an issue. As far as I know, no one has ever asked a question about using EXPORT without rtti before - at least no one has ever had any questions about it. You may be treading new ground here. Robert Ramey

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boost concept creation
by Zach 16 Jan '09

16 Jan '09

Can someone give me a high level explanation of the idea behind how concepts work? I'm trying to write a new concept class which enforces that two types are the same and it's not quite clicking. Strangely gcc has this concept built in, so I was surprised that boost didn't. I noticed a boost::is_same<> template, but it's not a concept, so it's not usable inside a BOOST_CONCEPT_ASSERT() macro.

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[Singleton] When CRTP won't work
by Alexander 16 Jan '09

16 Jan '09

The current version of Boost candidate Signelton as well as other implementation is CRTP base. However, one may want to use it as local class my_class& get_something(std::string const& param) { struct local : singleton<local> { ... }; return local::instance->some_method(param); }

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can't build threads on msvc-7.1
by Larry E. Ramey 16 Jan '09

16 Jan '09

I can't build the thread library. I have no idea why. ( What gregorian date is doing in the thread lib eludes me ) I have changed boost/config/user.hpp to #define BOOST_ALL_DYN_LIN, of course, that shouldn't effect threads.... but whatever.... Anyone got a clue? C:\RTI\devroot\packages-src\boost_1_37_0>cl.exe Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.6030 for 80x86 Copyright (C) Microsoft Corporation 1984-2002. All rights reserved. usage: cl [ option... ] filename... [ /link linkoption... ] C:\RTI\devroot\packages-src\boost_1_37_0>bjam --version Boost.Build V2 (Milestone 12) Boost.Jam 03.1.17 C:\RTI\devroot\packages-src\boost_1_37_0>bjam --with-thread toolset=msvc-7.1 var iant=release link=shared WARNING: No python installation configured and autoconfiguration failed. See http://www.boost.org/libs/python/doc/building.html for configuration instructions or pass --without-python to suppress this message and silently skip all Boost.Python targets ...patience... ...found 716 targets... ...updating 2 targets... msvc.link.dll bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.dll Creating library bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.lib and object bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.exp thread.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall boost::gregorian::greg_month::greg_month(unsigned short)" (__im p_??0greg_month@gregorian@boost@@QAE@G@Z) referenced in function "public: __thiscall boost::gregorian::date::date(enum boost::date_time::special_values)" (??0da te@gregorian@boost@@QAE@W4special_values@date_time@2@@Z) bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.dll : fatal error LNK1120: 1 unresolved externals call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul link /NOLOGO /INCREMENTAL:NO /DLL /subsystem:console /out:"bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.dll" /IMPLIB:"bin .v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.lib" @"bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_threa d-vc71-mt-1_37.dll.rsp" if %ERRORLEVEL% NEQ 0 EXIT %ERRORLEVEL% if exist "bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boos t_thread-vc71-mt-1_37.dll.manifest" ( mt -nologo -manifest "bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.dll.manifest" "-outputresource:bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.dll;2" ) ...failed msvc.link.dll bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.dll bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.lib... ...removing bin.v2\libs\thread\build\msvc-7.1\release\threading-multi\boost_thread-vc71-mt-1_37.lib ...failed updating 2 targets...

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Why there are accepted libraries that doesn't included in boost distribution yet ?
by Kamil Zubair 16 Jan '09

16 Jan '09

I just perused the formal review lists in boost website and I noticed there are some libraries like scope exit and factory that's been flagged as accepted but not in included in current boost distribution. Why is that ? One more thing, where can I find information about libraries that will be added to the next boost release ? Selalu bersama teman-teman di Yahoo! Messenger. Tambahkan mereka dari email atau jaringan sosial Anda sekarang! http://id.messenger.yahoo.com/invite/

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Re: [Boost-users] boost compilation error
by Dmitry V. Krivenok 16 Jan '09

16 Jan '09

Bijay Panda wrote: > Hi, > when i try like this i got error like bellow > bijay@cmp1:~/boost$ g++ -o second boostThread.cpp > -lboost_filesystem-gcc42-1_34_1 > /usr/bin/ld: cannot find -lboost_filesystem-gcc42-1_34_1 > collect2: ld returned 1 exit status It can't find libboost_filesystem-gcc42-1_34_1.so You may create it: ln -s /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1 /usr/lib/libboost_filesystem-gcc42-1_34_1.so > so i tried like this > bijay@cmp1: g++ -o second boostThread.cpp -L/boost_filesystem-gcc42-1_34_1 Read about -I and -L options in gcc manual page :) > > then it's showing error like bellow Your program doesn't depend on boost filesystem library. It depends on boost thread library. > > /tmp/cclxXala.o: In function `main': > boostThread.cpp:(.text+0xeb): undefined reference to > `boost::thread::thread(boost::function0<void, > std::allocator<boost::function_base> > const&)' > boostThread.cpp:(.text+0x101): undefined reference to > `boost::thread::join()' > boostThread.cpp:(.text+0x132): undefined reference to > `boost::thread::~thread()' > boostThread.cpp:(.text+0x148): undefined reference to > `boost::thread::~thread()' > collect2: ld returned 1 exit status > Your program is compiled without any problems as follows: krivenok@develop2 15:31:21 /tmp $ cat example.cpp #include <boost/thread/thread.hpp> #include <exception> #include <stdlib.h> #include <iostream> using namespace std; class callable { public: void run() { try { cout << "Throwing" <<std:: endl; throw string("error"); } catch(string &e) { cout << "Error: " << e << endl; } } void operator()() { this->run(); } }; int main() { callable c; cout<<"inside main"<<endl; boost::thread thd(boost::ref(c)); thd.join(); return 0; } krivenok@develop2 15:31:28 /tmp $ g++ example.cpp -lboost_thread-gcc43-mt-1_37 -L/usr/local/dev/boost-1.37.0/lib -I/usr/local/dev/boost-1.37.0/include krivenok@develop2 15:31:44 /tmp $ ./a.out inside main Throwing Error: error krivenok@develop2 15:31:47 /tmp $ ldd ./a.out linux-gate.so.1 => (0xb7fa0000) libboost_thread-gcc43-mt-1_37.so.1.37.0 => /usr/local/dev/boost-1.37.0/lib/libboost_thread-gcc43-mt-1_37.so.1.37.0 (0xb7f90000) libstdc++.so.6 => /usr/lib/gcc/i686-pc-linux-gnu/4.1.2/libstdc++.so.6 (0xb7e90000) libm.so.6 => /lib/libm.so.6 (0xb7e6a000) libgcc_s.so.1 => /usr/lib/gcc/i686-pc-linux-gnu/4.1.2/libgcc_s.so.1 (0xb7e5e000) libc.so.6 => /lib/libc.so.6 (0xb7d2e000) librt.so.1 => /lib/librt.so.1 (0xb7d24000) libpthread.so.0 => /lib/libpthread.so.0 (0xb7d0d000) /lib/ld-linux.so.2 (0xb7fa1000) krivenok@develop2 15:31:55 /tmp $ > ////////////////////Here is my program/////////// > #include <exception> > #include <boost/thread/thread.hpp> > #include <stdlib.h> > #include <iostream> > using namespace std; > > class callable { > public: > void run() > { > try > { > cout << "Throwing" <<std:: endl; > throw string("error"); > } > catch(string &e) > { > cout << "Error: " << e << endl; > } > } > > void operator()() { > this->run(); > } > }; > > int main() { > callable c; > cout<<"inside main"<<endl; > boost::thread thd(boost::ref(c)); > thd.join(); > return 0; > } > > Plz help me out. > > On Fri, Jan 16, 2009 at 4:41 PM, Dmitry V. Krivenok > <krivenok(a)orangesystem.ru <mailto:krivenok@orangesystem.ru>> wrote: > > Bijay Panda wrote: > > Hi, > when i try this locate libboost_filesystem i get path like bellow > > bijay@cmp1:~/boost$ locate libboost_filesystem > /usr/lib/libboost_filesystem-gcc41-mt-1_34_1.so.1.34.1 > /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1 > /usr/lib/libboost_filesystem-gcc42-mt-1_34_1.so.1.34.1 > /usr/lib/libboost_filesystem-gcc41-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc41-mt-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc42-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc42-mt-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc41-1_34_1.so.1.34.1 > bijay@cmp1:~/boost$ > then i tried to compile like this > > g++ -o second boostThread.cpp -lboost_filesystem > -L/usr/lib/libboost_filesystem-gcc41-1_34_1.so.1.34.1 > > > The option "-L" specifies the directory containing the library > (not the library itself). > /usr/lib is standard path, so you can omit passing "-L" option. > > Try this: > g++ -o second boostThread.cpp -lboost_filesystem-gcc42-1_34_1 > > I always create symlinks like > /usr/lib/libboost_filesystem.so ---> > /usr/lib/libboost_filesystem-gcc42-1_34_1.so > after boost installation. > > This results to something like this: > > /usr/local/dev/boost-1.37.0/lib/libboost_filesystem.so -> > /usr/local/dev/boost-1.37.0/lib/libboost_filesystem-gcc43.so // > MANUALLY CREATED > /usr/local/dev/boost-1.37.0/lib/libboost_filesystem-gcc43.so -> > libboost_filesystem-gcc43-1_37.so.1.37.0 // AUTOMATICALLY CREATED > BY BOOST > > This approach allows write Makefiles independent of gcc and boost > versions. > Instead of writing -lboost_filesystem-gcc42-1_34_1 you write > -lboost_filesystem. > > > It's strange that locate didn't find > > /usr/lib/libboost_filesystem-gcc42-1_34_1.so > It should be symlink to > /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1 > > > it throws the same error. > > /usr/bin/ld: cannot find -lboost_filesystem > collect2: ld returned 1 exit status > > Can u plz help me out. > > On Fri, Jan 16, 2009 at 1:14 PM, Dmitry V. Krivenok > <krivenok(a)orangesystem.ru <mailto:krivenok@orangesystem.ru> > <mailto:krivenok@orangesystem.ru > <mailto:krivenok@orangesystem.ru>>> wrote: > > Bijay Panda wrote: > > Hi All, > I am trying to run boost1.34.1 in ubuntu 7.10. > Compiling the program like this > > g++ -o fst boostThread.cpp -lboost_filesystem > > throws error like bellow. > > /usr/bin/ld: cannot find -lboost_filesystem > collect2: ld returned 1 exit status > > Can any one please tell me how to get rid of this. > > > g++ can't find shared library libboost_filesystem.so > > Provide the path to the library using -L option. > For example > g++ -o fst boostThread.cpp -lboost_filesystem > -L/usr/local/boost-1.34.1/lib > > If you don't know where library located try the following > commands: > sudo updatedb > locate libboost_filesystem.so > > On my system this command produces this output: > krivenok@develop2 10:44:55 > ~/dev_builds/boost-trunk/boost/date_time $ locate > libboost_filesystem.so > /usr/local/old_dev/boost-1.34.1/lib/libboost_filesystem.so > /usr/local/dev/boost-1.37.0/lib/libboost_filesystem.so > /usr/lib/libboost_filesystem.so > krivenok@develop2 10:45:02 > > > -- Thanks & Regards > Bijay Kumar Panda > > > ------------------------------------------------------------------------ > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > <mailto:Boost-users@lists.boost.org> > <mailto:Boost-users@lists.boost.org > <mailto:Boost-users@lists.boost.org>> > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > -- Sincerely yours, Dmitry V. Krivenok > Orange System Company > Saint-Petersburg, Russia > work phone: +7 812 332-32-40 > cellular phone: +7 921 576-70-91 > e-mail: krivenok(a)orangesystem.ru > <mailto:krivenok@orangesystem.ru> > <mailto:krivenok@orangesystem.ru > <mailto:krivenok@orangesystem.ru>> > > web: http://www.orangesystem.ru > skype: krivenok_dmitry > jabber: krivenok_dmitry(a)jabber.ru > <mailto:krivenok_dmitry@jabber.ru> > <mailto:krivenok_dmitry@jabber.ru > <mailto:krivenok_dmitry@jabber.ru>> > > icq: 242-526-443 > > > > > -- > Thanks & Regards > Bijay Kumar Panda > Mob-9739591816 > bijaykumar.mail(a)gmail.com <mailto:bijaykumar.mail@gmail.com> > <mailto:bijaykumar.mail@gmail.com > <mailto:bijaykumar.mail@gmail.com>> > bijaykumar_panda(a)yahoo.com <mailto:bijaykumar_panda@yahoo.com> > <mailto:bijaykumar_panda@yahoo.com > <mailto:bijaykumar_panda@yahoo.com>> > > > > -- > Sincerely yours, Dmitry V. Krivenok > Orange System Co., Ltd. > > Saint-Petersburg, Russia > work phone: +7 812 332-32-40 > cellular phone: +7 921 576-70-91 > e-mail: krivenok(a)orangesystem.ru <mailto:krivenok@orangesystem.ru> > web: http://www.orangesystem.ru > skype: krivenok_dmitry > jabber: krivenok_dmitry(a)jabber.ru <mailto:krivenok_dmitry@jabber.ru> > icq: 242-526-443 > > > > > -- > Thanks & Regards > Bijay Kumar Panda > Mob-9739591816 > bijaykumar.mail(a)gmail.com <mailto:bijaykumar.mail@gmail.com> > bijaykumar_panda(a)yahoo.com <mailto:bijaykumar_panda@yahoo.com> > -- Sincerely yours, Dmitry V. Krivenok Orange System Co., Ltd. Saint-Petersburg, Russia work phone: +7 812 332-32-40 cellular phone: +7 921 576-70-91 e-mail: krivenok(a)orangesystem.ru web: http://www.orangesystem.ru skype: krivenok_dmitry jabber: krivenok_dmitry(a)jabber.ru icq: 242-526-443

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ASIO COM Port & Pins
by Jens Weller 16 Jan '09

16 Jan '09

Hi, I have to read from an (virtual) comport to receive the event from a photosensor. There is no protocol, just if something passes through, there is at pin x power (pins 4,6 and 7,8). I've seen the example for the COM Port usage with asio, sofar I've not seen anything to monitor a single/multiple pins. http://www.nabble.com/Simple-serial-port-demonstration-with-boost-asio-asyn… Also I am not sure, if I need to, would it be enough, to just connect and then perform an async_read on the comport? Actually I don't have to get the data really, as its probably not really "data", all I need to know is when data comes in. Is asio the right library to handle this? Are there other options? regards Jens Weller -- Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger

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Re: [Boost-users] boost compilation error
by Dmitry V. Krivenok 16 Jan '09

16 Jan '09

Bijay Panda wrote: > Hi, > when i try this locate libboost_filesystem i get path like bellow > > bijay@cmp1:~/boost$ locate libboost_filesystem > /usr/lib/libboost_filesystem-gcc41-mt-1_34_1.so.1.34.1 > /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1 > /usr/lib/libboost_filesystem-gcc42-mt-1_34_1.so.1.34.1 > /usr/lib/libboost_filesystem-gcc41-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc41-mt-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc42-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc42-mt-1_34_1.so.1.34.1 > /var/cache/apt/archives/libboost_filesystem-gcc41-1_34_1.so.1.34.1 > bijay@cmp1:~/boost$ > then i tried to compile like this > > g++ -o second boostThread.cpp -lboost_filesystem > -L/usr/lib/libboost_filesystem-gcc41-1_34_1.so.1.34.1 The option "-L" specifies the directory containing the library (not the library itself). /usr/lib is standard path, so you can omit passing "-L" option. Try this: g++ -o second boostThread.cpp -lboost_filesystem-gcc42-1_34_1 I always create symlinks like /usr/lib/libboost_filesystem.so ---> /usr/lib/libboost_filesystem-gcc42-1_34_1.so after boost installation. This results to something like this: /usr/local/dev/boost-1.37.0/lib/libboost_filesystem.so -> /usr/local/dev/boost-1.37.0/lib/libboost_filesystem-gcc43.so // MANUALLY CREATED /usr/local/dev/boost-1.37.0/lib/libboost_filesystem-gcc43.so -> libboost_filesystem-gcc43-1_37.so.1.37.0 // AUTOMATICALLY CREATED BY BOOST This approach allows write Makefiles independent of gcc and boost versions. Instead of writing -lboost_filesystem-gcc42-1_34_1 you write -lboost_filesystem. It's strange that locate didn't find /usr/lib/libboost_filesystem-gcc42-1_34_1.so It should be symlink to /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1 > > it throws the same error. > > /usr/bin/ld: cannot find -lboost_filesystem > collect2: ld returned 1 exit status > > Can u plz help me out. > > On Fri, Jan 16, 2009 at 1:14 PM, Dmitry V. Krivenok > <krivenok(a)orangesystem.ru <mailto:krivenok@orangesystem.ru>> wrote: > > Bijay Panda wrote: > > Hi All, > I am trying to run boost1.34.1 in ubuntu 7.10. > Compiling the program like this > > g++ -o fst boostThread.cpp -lboost_filesystem > > throws error like bellow. > > /usr/bin/ld: cannot find -lboost_filesystem > collect2: ld returned 1 exit status > > Can any one please tell me how to get rid of this. > > > g++ can't find shared library libboost_filesystem.so > > Provide the path to the library using -L option. > For example > g++ -o fst boostThread.cpp -lboost_filesystem > -L/usr/local/boost-1.34.1/lib > > If you don't know where library located try the following commands: > sudo updatedb > locate libboost_filesystem.so > > On my system this command produces this output: > krivenok@develop2 10:44:55 > ~/dev_builds/boost-trunk/boost/date_time $ locate > libboost_filesystem.so > /usr/local/old_dev/boost-1.34.1/lib/libboost_filesystem.so > /usr/local/dev/boost-1.37.0/lib/libboost_filesystem.so > /usr/lib/libboost_filesystem.so > krivenok@develop2 10:45:02 > > > -- > Thanks & Regards > Bijay Kumar Panda > > ------------------------------------------------------------------------ > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org <mailto:Boost-users@lists.boost.org> > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > -- > Sincerely yours, Dmitry V. Krivenok > Orange System Company > Saint-Petersburg, Russia > work phone: +7 812 332-32-40 > cellular phone: +7 921 576-70-91 > e-mail: krivenok(a)orangesystem.ru <mailto:krivenok@orangesystem.ru> > web: http://www.orangesystem.ru > skype: krivenok_dmitry > jabber: krivenok_dmitry(a)jabber.ru <mailto:krivenok_dmitry@jabber.ru> > icq: 242-526-443 > > > > > -- > Thanks & Regards > Bijay Kumar Panda > Mob-9739591816 > bijaykumar.mail(a)gmail.com <mailto:bijaykumar.mail@gmail.com> > bijaykumar_panda(a)yahoo.com <mailto:bijaykumar_panda@yahoo.com> > -- Sincerely yours, Dmitry V. Krivenok Orange System Co., Ltd. Saint-Petersburg, Russia work phone: +7 812 332-32-40 cellular phone: +7 921 576-70-91 e-mail: krivenok(a)orangesystem.ru web: http://www.orangesystem.ru skype: krivenok_dmitry jabber: krivenok_dmitry(a)jabber.ru icq: 242-526-443

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