November 2009 - Boost-users

building 1.40 with 1.3x lib naming
by Adam Fisk 15 Nov '09

15 Nov '09

This should hopefully be an easy one. I'm having trouble with the new default lib naming in 1.40.0. I previously linked to libraries with the following naming structure with 1.38.0, for example: libboost_system-mt-sgd.lib With 1.40.0, I get simply: libboost_system.lib I'm running with --layout=system (just as I was with 1.38 - my scripts haven't changed). What can I change in 1.40.0 to get "-mt-sgd" in the name? Thanks so much. -Adam -- Adam Fisk http://www.littleshoot.org | http://adamfisk.wordpress.com | http://twitter.com/adamfisk

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Re: [Boost-users] boost filesystem api problem
by nipun_mlist Assam 15 Nov '09

15 Nov '09

> I am using boost 1.32.0 and using filesystem apis. i included > boost/filesystem/operations.hpp and boost/filesystem/path.hpp. > > I get the following link error: > undefined reference to > `boost::filesystem::detail::status_api(std::basic_string<char, > std::char_traits<char>, std::allocator<char> > const&, int&)' > undefined reference to > `boost::filesystem::detail::get_current_path_api(std::basic_string<char, > std::char_traits<char>, std::allocator<char> >&)' > > I did the following brute force check of probable libraries in > tools/boost/1.32.0/lib. > $ nm -DCo *.so* | grep status_ai > But no luck. No match for the api found in any of the libraries. > > > Anybody, please help. > > Regards, > Nipun >

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[Review] GGL review extended until November 22nd
by Hartmut Kaiser 15 Nov '09

15 Nov '09

Hi all, The discussions around GGL are just start ramping up and we received only 2 (voting) reviews so far. Additionally, several people have been asking me off-list to extend the review period as they otherwise wouldn't be able to write a review in time. For these reasons the review period for the GGL library will be extended for another week. The review period will now end November 22nd. For everybody considering to vote: this would be a good time to write a review! Regards Hartmut GGL Review Manager ------------------- Meet me at BoostCon http://boostcon.com

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test an open port?
by pedro chaparro 14 Nov '09

14 Nov '09

hi, how can i do a test before a data transmmision to know if a port is being used or not? thnaks -- Ing Pedro Alonso Chaparro Valero Ciudad Politecnica de la Innovación iTEAM - Mobile Communications Group Polytechnic University of Valencia C\ Camino de Vera S/N, Edificio 8G 46022 Valencia, Spain

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concat integer to wstring
by Lloyd 14 Nov '09

14 Nov '09

Hi, What is the best way to concatanate an integer to wstring? for example =========== std::wstring ws=L"str"; for(int i=0;i<10;++i) { cout<<ws+i; } The output could be str1 str2 .... str9 Thanks, Lloyd ______________________________________ Scanned and protected by Email scanner

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Asio : opening two udp::sockets on differentports
by Ãtienne Lepercq 13 Nov '09

13 Nov '09

I am not a specialist in TCP/UDP communications, but I am trying to implement some communications using UDP packets (v6). I can't use anything else than UDP v6 due to external constraints. I am using boost 1.37. I tried boost 1.40, same problem (see below) I have implemented a first architecture, working like : - a server listens to UDP packets v6 coming on a port ( let's say 65000). - a client connects to that port by sending a UDP packet. - the server starts a new thread, which listens for udpv6 packets on another port - the client should deconnect and reconnect to that other port. Cleitns starts opening the first socket like that : boost::asio::io_service io_service; udp::endpoint endpoint; udp::socket socket(io_service); udp::resolver::query query(udp::v6(), m_host, m_port); udp::resolver resolver(io_service); endpoint = *resolver.resolve(query); socket.open(udp::v6()); Then a function is called that sends a packet, receive an answer, etc... WORKS ! Then, I would like that socket being closed, and reopened on the same host, but on a different port. Something like this : socket.close(); udp::socket socket(io_service); udp::resolver::query query2(udp::v6(), m_host, NEWPORT); udp::resolver resolver2(io_service); endpoint = *resolver2.resolve(query2); socket.open(udp::v6()); But it fails miserably, throwing exception "Host not found (Authoritative)" on this second attempt. m_host is the ipv6 loopback address, "::1". I tried declaring at the same time, a full new set of io_service, endpoint, socket, query, resolver : the very same thing happens ! That said, there is another thread listening on the NEWPORT for udp v6 packets. I am developping mainly under linux, using lsof lists exactly the right number of ports opened (m_port and NEWPORT are opened for udpv6) So what is incorrect ? I don't really understand the behavior and complexity of io_service, maybe that's the problem ? How can I reopen a second socket on another port ? That port being listed by the system as opened succesfully, I really think the problem lies in that section. Thank you !

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Problems installing Boost/Linking probs
by Hanno Jung 13 Nov '09

13 Nov '09

Hi everybody, I used the Installer for Boost (v 1.39) since download servers for 1.40 seem not to work. I chose the variants for vc 2005 and vc 2008 (both are installed) + the regex part. I added "C:\Programme\boost\boost_1_39\lib" as an additional library path like mentioned in the getting started guide. Now I try to build the example "Link your program to a Boost Library" from the guide. But i always get an error. "fatal error C1083: Datei (Include) kann nicht geöffnet werden: "boost/regex.hpp": No such file or directory" But the the directory is there and contains regex.hpp. Anyone may help me get this working? Greets

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Setting up Boost.Python under XP, and .pyd imports
by Mohan Ganesalingam 13 Nov '09

13 Nov '09

Hi, I'm having some trouble trying to set up boost.python on Windows XP with MSVC 9 and Python 2.6; any help would be much appreciated. I started by following the instructions in http://www.boost.org/doc/libs/1_40_0/libs/python/doc/tutorial/doc/html/pyth… I started by adding the directory with the bjam executable to the oath, and running it from the tutorial directory. I found that it ignores the user-config.jam in %HOMEDRIVE%%HOMEPATH%, and uses the one in C:\Program Files\_Applications\Microsoft Visual Studio 9.0\boost_1_39\tools\build\v2\user-config.jam instead; apart from that, everything works correctly and I get extending.pyd and a load of other files in C:\Program Files\_Applications\Microsoft Visual Studio 9.0\boost_1_39\libs\python\example\quickstart\bin\msvc-9.0\debug\threading-multi I know it must be possible to import extending.pyd from that selfsame directory, because the testing script run by bjam manages it. But the only way I could load it myself was to copy it into some directory that is in the path. Is there any way to simply have the .pyd loaded from the local directory, i.e. from the directory that the main .py script is executed in? (I guess I could temporarily modify sys.path inside the script... but that seems rather gawky.) Also, while trying to solve this problem, I found a number of references instructing me to put boost_python.dll in the main Python directory. I couldn't find this file (after having run bjam), only "boost_python-vc90-mt-gd-1_39.dll". Is that the right one to use? Thank you in advance, Mohan

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[mpi] - how to split communicator correctly?
by tomasz jankowski 13 Nov '09

13 Nov '09

ello group, i think I know how to split communicators & how it works in pure c mpi. but I have problems with boost::mpi. assume that we want divide world communicator into 3 groups. please look here: mpi::environment env(argc, argv); mpi::communicator world; mpi::communicator elloa; mpi::communicator elloc; mpi::communicator ellob; if(world.rank() == 0){ elloa = world.split(0); } if(world.rank() == 1){ elloa = world.split(0); } if(world.rank() == 2){ elloa = world.split(0); } if(world.rank() == 3){ ellob = world.split(1); } if(world.rank() == 4){ ellob = world.split(1); } if(world.rank() == 5){ ellob = world.split(1); } if(world.rank() == 6){ elloc = world.split(2); } if(world.rank() == 7){ elloc = world.split(2); } if(world.rank() == 0){ std::cout<<"elloa " << elloa.size()<<std::endl; std::cout<<"ellob " << ellob.size()<<std::endl; std::cout<<"elloc " << elloc.size()<<std::endl; } the code above gives me such results: elloa 3 ellob 8 elloc 8 my question is why ellob and alloc communicators counts 8 members not 3 and 2 respetively? what I'm doing incorrect? tom ---------------------------------------------------- Pudzian czy Najman? Najdroższa walka w historii polskiego MMA Polecam 12 edycję Gali KSW! Sprawdź: http://klik.wp.pl/?adr=http%3A%2F%2Fcorto.www.wp.pl%2Fas%2F12konfrontacja.h…

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change command used by bjam when installing boost
by Tim 13 Nov '09

13 Nov '09

Hi, I first install boost.build and bjam. Then I try to make the building boost library a little bit slower by adding some time to sleep between every two calls to g++. So I add this in /etc/site-config.jam using gcc ; ; "sleep 10; g++" ; However, when calling bjam to install, it gives this error: $ ./bjam install \/etc/site-config.jam:5: syntax error at keyword ; /etc/site-config.jam:5: in load rule sleep 10; g++ unknown in module pch. /tmp/boost_1_40_0/tools/build/v2/kernel/modules.jam:283: in import /tmp/boost_1_40_0/tools/build/v2/tools/gcc.jam:19: in load /tmp/boost_1_40_0/tools/build/v2/kernel/modules.jam:283: in import /tmp/boost_1_40_0/tools/build/v2/build/toolset.jam:37: in toolset.using /tmp/boost_1_40_0/tools/build/v2/build/project.jam:874: in using project-config.jam:12: in modules.load /tmp/boost_1_40_0/tools/build/v2/build-system.jam:241: in load-config /tmp/boost_1_40_0/tools/build/v2/build-system.jam:407: in load-configuration-files /tmp/boost_1_40_0/tools/build/v2/build-system.jam:538: in load /tmp/boost_1_40_0/tools/build/v2/kernel/modules.jam:283: in import /tmp/boost_1_40_0/tools/build/v2/kernel/bootstrap.jam:138: in boost-build /tmp/boost_1_40_0/boost-build.jam:16: in module scope Some advice how to solve this? Thanks and regards!

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