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Re: [Boost-users] [Boost.Filesystem] Program can't run under Win 98
by Trigve Siver 14 Jul '07

14 Jul '07

Hi, I was thinkig about setting _WIN32_WINNT to 0x400 and rebuilding boost.filesystem. I will try it for sure. Yes I've filled the bug report 5 minutes ago:) thanks Trigve ----- Original Message ---- From: Todd Greer <TGreer(a)affinegy.com> To: boost-users(a)lists.boost.org Sent: Saturday, July 14, 2007 12:04:21 AM Subject: Re: [Boost-users] [Boost.Filesystem] Program can't run under Win 98 On Thursday, July 12, 2007 7:27 AM Trigve Siver said: > I've got a problem running application that uses boost.filesystem on win > 98. I'm compiling it on Win XP SP2. The problem is the CreateHardLinkA > function. It seems that this functions was added lately to kernel32.dll > (Windows 2000 I think). Is there any solution to resolve this problem? > Anyway I don't use any links operations from boost.filesystem so I don't > care about this function. I'm using boost 1.34. With boost 1.33.1 > everything was working fine ( I think there wasn't code for link > operations). It would appear that #defining _WIN32_WINNT to 0x400 or less when compiling the filesystem library should exclude that code (and some related code with the same problem). I believe this can be done by setting cxxflags to -D_WIN32_WINNT when building, but I haven't tried it myself, and don't know much about the boost build system. Unless this problem is fixed for 1.34.1, I'll be learning the details myself in a few weeks, as it will otherwise block our upgrading. Have you filed a bug report at svn.boost.org? -- Todd _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

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[Boost.Filesystem] Program can't run under Win 98
by Trigve Siver 13 Jul '07

13 Jul '07

Hi I've got a problem running application that uses boost.filesystem on win 98. I'm compiling it on Win XP SP2. The problem is the CreateHardLinkA function. It seems that this functions was added lately to kernel32.dll (Windows 2000 I think). Is there any solution to resolve this problem? Anyway I don't use any links operations from boost.filesystem so I don't care about this function. I'm using boost 1.34. With boost 1.33.1 everything was working fine ( I think there wasn't code for link operations). thanks Trigve ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

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[boost:filesystem] - linker errors.
by chun ping wang 13 Jul '07

13 Jul '07

k i have program a.h that uses boost filesystem. b.h includes a.h and also uses boost::filesystem.. when i build i get this error. C:/Boost/include/boost_1_34/boost/filesystem/convenience.hpp:70: multiple defini tion of `boost::filesystem::basename(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)' ./teng/lib/libmy.a(my.o):C:/Boost/include/boost_1_34/boost/filesys tem/convenience.hpp:70: first defined here ./teng/lib/libmy.a(my2.o): In function `ZN5boost10filesystem9exten sionERKNS0_10basic_pathISsNS0_11path_traitsEEE': C:/Boost/include/boost_1_34/boost/filesystem/convenience.hpp:58: multiple defini tion of `boost::filesystem::extension(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)' ./teng/lib/libmy.a(my.o):C:/Boost/include/boost_1_34/boost/filesys tem/convenience.hpp:58: first defined here

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Re: [Boost-users] Question
by question boost 13 Jul '07

13 Jul '07

Hi, I don't understant what you are saying excactly. What do you mean by "to put the path to mingw from CodeBlock in your PATH environnement variable (Control Panel/System/Advanced/Environment variables)"? Give an example (fictious data) and then it will be clear to me. Thank you.> To: boost-users(a)lists.boost.org> Wrom: NQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULH _________________________________________________________________ David Guetta a réuni les sons les plus connus de Messenger dans le Mix Messenger, le son de l’été ! Téléchargez-le gratuitement ! http://specials.divertissements.fr.msn.com/mixmessenger

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deep copying reference_wrapper<>s in a bind()
by Edd Dawson 13 Jul '07

13 Jul '07

Hi folks, I'm currently attempting to create a little facility that will allow me to eaily kick off a function call in another thread and get the result through a "future". Something like: unsigned count_primes_upto(std::size_t max); async::layered_cage < std::exception, std::domain_error, async::catch_all > cage; // to catch exceptions // call count_primes_upto(9876543210) in another thread async::future<unsigned> n = async::call(cage, &count_primes_upto, 9876543210); // do other stuff in the mean time // ... // Block until done. Get result or propagate exception std::cout << "there are " << n.value() << " primes less than " << 9876543210 <<'\n'; To achieve this I'm using boost::bind and boost::function quite heavily. I've discovered that by the time the final boost::function<void ()> is composed for the boost::thread constructor, I've copied each of the arguments (such as 9876543210 in the above) about 30 times!. Now, I can use boost::ref() internally in such a way that no copying of arguments happens at all. However, this is also undesirable; I would like the thread that is created to have its own copy of each argument unless the client explicitly wraps an argument in boost::ref/cref in order to avoid dangling cross-thread references. So what I'd like is a way to copy the result of my final boost::bind() call in to a new functor where all the ref() arguments are deep-copied once and only once at the end. Is there some way of doing this? Perhaps the "as yet undocumented" visit_each is relevant, here? Kind regards, Edd

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[wave] linking errors for the head revision
by Ovanes Markarian 13 Jul '07

13 Jul '07

Hartmut, applying your patch from the CVS head (which you produced in request to multi-thread safety and conditional preprocessing) results in linking problems. I tried compiling with boost_1_34_0 and boost_1_34_1_RC2. Here are some of the errors which are produced by the linker. The interesting thing is that threading library is compiled fine. instantiate_cpp_exprgrammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_cpp_grammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_cpp_literalgrs.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_defined_grammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) With Kind Regards, Ovanes Markarian

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Re: [Boost-users] [Graph] Maximum Cardinality Matching: weighted?
by Jean-Francois Bastien 13 Jul '07

13 Jul '07

> Hi Jean-Francois, > > Sorry, but the BGL currently doesn't have an implementation > of weighted matching, even for bipartite graphs. Edmonds' > algorithm works only on unweighted graphs. I'd been looking for an algorithm before I found Boost's implementation (which turns out to be a no-match for my problem); the Hungarian algorithm seems to do the thing but it seems to be the first algorithm developped to solve such problem and I've read it's not as good as the latest algorithms (correct me if that's wrong). Unfortunately the litterature gets a bit hard to read for me who know nothing of graph theory. I'd nonetheless like to (try to) implement for a maximum weighted maximum cardinality matching solver potentially unbalanced complete weighted bipartite graph, and if it works out add it to the BGL. Which algorithm (paper or source references would be appreciated) should I implement to do this efficiently, if not the Hungarian algorithm? > > Regards, > Aaron JF

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Re: [Boost-users] Question
by frederic.bron＠alcan.com 13 Jul '07

13 Jul '07

What are you trying to do? Building the library or building a program. If you want to build the library, 1st get bjam from here: http://sourceforge.net/project/showfiles.php?group_id=7586&package_id=72941 Download boost-jam-3.1.14-1.ntx38.zip You will get from the zip file bjam.exe which you then do not need to build yourself! The next step is to build the boost library itself using bjam. I think the best is 1st to put the path to mingw from CodeBlock in your PATH environnement variable (Control Panel/System/Advanced/Environment variables) Then I think bjam can find alone the path to your gcc. F. Bron question boost <question.boost@h Pour : <frederic.bron(a)alcan.com> otmail.fr> cc : Objet : Bjam 12/07/2007 13:37 Hi Frederic Bron, using Code Blocks i got the following message:ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l"Then I do: cd C:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src thenC:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src\build.batThen I set the following variables:BOOST_ROOT= C:\Documents and Settings\src\boostand BOOST_BUILD_PATH=C:\Documents and Settings\src\boost\tools\build\v2. I don't know what to do now. You have told me the version of boost was the solution but it isn't. I ask you because I suppose that as a Boost user , you have already configured Bjam. I've run build.bat (see bjam.qbk) then i've set the variables BOOST_ROOT and BOOST_BUILD_PATH but I get the message again. What is the solution? Thank You Frederic Bron Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail et bénéficiez d'un filtre antivirus gratuit ! Windows Live Hotmail Avis : Ce message et toute pièce jointe sont la propriété d'Alcan et sont destinés seulement aux personnes ou à l'entité à qui le message est adressé. Si vous avez reçu ce message par erreur, veuillez le détruire et en aviser l'expéditeur par courriel. Si vous n'êtes pas le destinataire du message, vous n'êtes pas autorisé à utiliser, à copier ou à divulguer le contenu du message ou ses pièces jointes en tout ou en partie. Notice: This message and any attachments are the property of Alcan and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part.

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[smart_ptr]why scoped_ptr c ann't used in this case, yet shared_ptr ca n
by hongleij＠126.com 13 Jul '07

13 Jul '07

//cpeer.h #ifndef CPEER_H_ #define CPEER_H_ #include <string> struct CPeer { std::string name; }; #endif /*CPEER_H_*/ //cpeermanager.h #ifndef CPEERMANAGER_H_ #define CPEERMANAGER_H_ class CPeer; #include <boost/shared_ptr.hpp> #include <boost/scoped_ptr.hpp> class CPeerManager { public: CPeerManager(); boost::scoped_ptr<CPeer> cp_; //error // boost::shared_ptr<CPeer> cp_; // ok }; #endif /*CPEERMANAGER_H_*/ //cpeermanager.cpp #include "cpeer.h" #include "cpeermanager.h" CPeerManager::CPeerManager(): cp_ (new CPeer() ) { } //main.cpp #include "cpeermanager.h" int main() { CPeerManager cp; } i get **** Build of configuration Debug for project scoped_ptr_test **** make -k all 'Building file: ../cpeermanager.cpp' 'Invoking: GCC C++ Compiler' g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"cpeermanager.d" -MT"cpeermanager.d" -o"cpeermanager.o" "../cpeermanager.cpp" 'Finished building: ../cpeermanager.cpp' ' ' 'Building file: ../main.cpp' 'Invoking: GCC C++ Compiler' g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.cpp" c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp: In function 'void boost::checked_delete(T*) [with T = CPeer]': c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/scoped_ptr.hpp:77: instantiated from 'boost::scoped_ptr<T>::~scoped_ptr() [with T = CPeer]' ../cpeermanager.h:11: instantiated from here c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:32: error: invalid application of 'sizeof' to incomplete type 'CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:32: error: creating array with negative size ('-0x000000001') c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:33: error: invalid application of 'sizeof' to incomplete type 'CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:33: error: creating array with negative size ('-0x000000001') c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:34: warning: possible problem detected in invocation of delete operator: c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:29: warning: 'x' has incomplete type ../cpeermanager.h:4: warning: forward declaration of 'struct CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:34: note: neither the destructor nor the class-specific operator delete will be called, even if they are declared when the class is defined. make: *** [main.o] Error 1 make: Target `all' not remade because of errors. Build complete for project scoped_ptr_test /// why boost::shared_ptr can used to Minimize compilation dependencies between files, yet boost::scoped_ptr cannot. I needn't to use reference cout.may someboby help me out of the trouble.thanks! iPod、万点巨额点卡、奖学金……海量奖品，想拿就拿！

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Re: [Boost-users] Boost with threadpool
by Gopalan, Srinivasan (MLITS) 13 Jul '07

13 Jul '07

Hi, Since I am new to boost I don't know about this defer package. Is this a separate package to be compiled and linked with boost before using threadpool. Srini. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Oliver.Kowalke(a)qimonda.com Sent: Wednesday, July 11, 2007 7:08 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Boost with threadpool Hi, take look at defer package in the boost vault. Oliver _____ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Gopalan, Srinivasan (MLITS) Sent: Wednesday, July 11, 2007 8:03 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] Boost with threadpool Hi all, I would like to know whether any version of boost uses threadpool. Also there is a separate threadpool package. I would like to know how to link this package with boost. Thanks, Srini. _____ This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or error-free. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/. By messaging with Merrill Lynch you consent to the foregoing. _____

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Re: [Boost-users] Building Boost on Solaris 10.
by Sabyasachi Nath 13 Jul '07

13 Jul '07

Thanks Markus, I am going to give a try. Hope for the best!!! Thanks & Regards, Sabyasachi Nath Product Development Unit UshaComm India Pvt Ltd Emp Id 1295 WS 441 Tel: 9133-22812803/05/06 Mo: 919830622831 Extn 230 -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org]On Behalf Of Markus Bernhardt Sent: Friday, July 13, 2007 10:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Building Boost on Solaris 10. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sabyasachi, I'm using boost 1.34.0 on Solaris 10 with Sun Studio 11. In 1.34.0 building on Solaris is a little bit broken. You are using commands for 1.32.0. They are not working any more. See my attached stripped down Makefile. Haven't tested this stripped down version. Hope it works. 0. You need to have the following tools in $PATH - gpatch - gmake - gtar - CC 1. Unpack the tar-file. 2. copy boost_1_34_0.tar.gz to thirdparty/packages 3. cd thirdparty 4. gmake The generated binaries are 64-bit. If you want 32-bit binaries, remove the line: $(PATCH) -p1 < $(local_srcdir)/patches/$(BOOST).patch.$(ARCHCC) || exit 1; \ (2 occurrences !!!) I only build the libs: - - thread - - serialization - - filesystem If you need other libs add "--with-<libraryname>" everywhere, where you see "--with-thread" Kind regards, Markus - -- Software Consulting Markus Bernhardt GmbH Spieljochstr. 34 81825 München Fon: +49-89-420903-14 Fax: +49-89-420903-20 www: http://www.scmb.de Geschäftsführung Markus Bernhardt Handelsregister AG München HRB 125966 USt-Id DE201885231 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGlwlkdnooMonJSYkRAvBbAJwMzr6wTk1/qlrfMy4JAZ4vrEhJkACcCWKS cPjrOgAQwivsGSqPaBdD25Q= =YhTA -----END PGP SIGNATURE-----

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Re: [Boost-users] Building Boost on Solaris 10.
by Markus Bernhardt 13 Jul '07

13 Jul '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sabyasachi, I'm using boost 1.34.0 on Solaris 10 with Sun Studio 11. In 1.34.0 building on Solaris is a little bit broken. You are using commands for 1.32.0. They are not working any more. See my attached stripped down Makefile. Haven't tested this stripped down version. Hope it works. 0. You need to have the following tools in $PATH - gpatch - gmake - gtar - CC 1. Unpack the tar-file. 2. copy boost_1_34_0.tar.gz to thirdparty/packages 3. cd thirdparty 4. gmake The generated binaries are 64-bit. If you want 32-bit binaries, remove the line: $(PATCH) -p1 < $(local_srcdir)/patches/$(BOOST).patch.$(ARCHCC) || exit 1; \ (2 occurrences !!!) I only build the libs: - - thread - - serialization - - filesystem If you need other libs add "--with-<libraryname>" everywhere, where you see "--with-thread" Kind regards, Markus - -- Software Consulting Markus Bernhardt GmbH Spieljochstr. 34 81825 München Fon: +49-89-420903-14 Fax: +49-89-420903-20 www: http://www.scmb.de Geschäftsführung Markus Bernhardt Handelsregister AG München HRB 125966 USt-Id DE201885231 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGlwlkdnooMonJSYkRAvBbAJwMzr6wTk1/qlrfMy4JAZ4vrEhJkACcCWKS cPjrOgAQwivsGSqPaBdD25Q= =YhTA -----END PGP SIGNATURE-----

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Apparent defect with boost::bind macro used for member function with boost::function
by Ben McCart 13 Jul '07

13 Jul '07

There appears to be a defect in bound_memfunc_ptr. This occurs when using boost::bind macro to bind an object with its class member function for use with the boost::function pointer. For example, when using boost::bind to bind an object and associated class member function to a pointer like this: class A { public: void some_function(int i){}; }; A a1; boost::function<void, int> pfa1; pfa1 = boost::bind(&A::some_function, &a1, _1); ...the bound_memfunc_ptr.memfunc_ptr is populated with the address of A::some_function. However, the bound_memfunc_ptr.obj_ptr apears to be uninitialized. (pfa1.functor.bound_memfunc_ptr.obj_ptr has an address of 0xcccccccc in MSVC 2005) The function pointer works just fine to make calls. Internally the functor is storing the address of a1. However the address of a1 is not exposed through the bound_memfunc_ptr interface. I have assumed that the obj_ptr member which is of type void* is supposed to be the address of a1. Since a1's address is not exposed, it is not possible to distinguish between boost::function pointers that point to a1's member some_function() and any other object of class A. With this condition boost::function is unsuitable for use in an observer design pattern since there is no way to distinguish which boost::function pointer points to an observer when an observer wants to remove itself (unsubscribe) from an event. So, does anybody have any recommendations? Is the obj_ptr member supposed to be what I think it is, or is it for another purpose? Is there any other way to get at the address of a bound object, so that the boost::function pointer can be uniquely identified? Thanks in advance, ~Ben

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[smart_ptr] Getting segfaults with weak_ptr<T>::lock()
by Buddha Buck 13 Jul '07

13 Jul '07

I've run into a problem where a weak_ptr<> is segfaulting when I try to do a lock() call on it. It doesn't happen all the time, and I'm at a loss to see what's causing the problem. I have an implementation of the Observer pattern in my code using shared_ptr/weak_ptr: class Observer { public: virtual void update(shared_ptr<Observed> d) = 0; ... } class Observed : public enable_shared_from_this<Observed> { vector<weak_ptr<Observer> > _observers; public: void register(shared_ptr<Observer> o) { _observers.push_back(weak_ptr<Observer>(o)); } void notifyObservers() { vector<weak_ptr<Observer> >::iterator i; for (i = _observers.begin(); i != _observers.end(); observer++) { shared_ptr<Observer> o = i->lock(); if (o) o->update(shared_from_this()); } } ... } I'm trying to write a wxWidget that participates in the above Observer scheme, but quickly ran into a problem: wxWidgets passes around raw pointers and handles its own garbage-collection. If I created a shared_ptr<MyWidget>, wx would feel perfectly free to delete the object out from under the shared_ptr<>, which would be bad. My solution was: template <typename T> class wxObserver : public Observer { private: T* p; wxObserver(); public: wxObserver(T* p) : p(p); void update(shared_ptr<Observed> o) { if (p) p->update(o); } } class MyWidget : public wxWidget { private: shared_ptr<wxObserver<MyWidget> > observer; public: MyWidget(...) : wxWidget(...), observer(this) { ... observed->register(observer); ... } ... } The idea is that when a MyWidget is created, it creates a shared pointer to a wxObserver and can register that wxObserver with observed objects without a problem. When wxWidgets chooses to delete the MyWidget, the shared pointer the MyWidget goes away, the wxObserver is deleted, and the weak pointers held by the observed objects expire. The implementation of Observed::notifyObservers() checks to make sure that the observers still exist before update()ing them, and only the live observers are updated. The problem is that sometimes, after wxWidgets destroys a MyWidget, calls to Observed::notifyObservers() crashes with a segfault within the call to i->lock(). I can't see what's causing this. Worse, while it crashes consistantly and repeatedly at the same line, it doesn't appear to always crash after the same amount of work. Putting various {cerr << "got here";}-type lines within the code above doesn't always yield exactly the same results from run to run, even without recompiling. My thoughts are now that it might be a threading issue. Is there any good solutions to this problem? thanks, Buddha

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Re: [Boost-users] Why does G++ have no auto-linking like VC?
by Olaf van der Spek 13 Jul '07

13 Jul '07

Hi, Why does G++ have no auto-linking like VC? And what is the recommended way to link to a Boost lib with g++ or make? Please CC me, I'm not on the list. Olaf

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[Graph] Maximum Cardinality Matching: weighted?
by Jean-Francois Bastien 12 Jul '07

12 Jul '07

Hello, I am just starting on using boost::graph and I would like to solve the following problem: I have a potentially unbalanced complete weighted bipartite graph and I would like to find the maximum weighted maximum cardinality matching for it. The immediate candidate for this seems to be the checked_edmonds_maximum_cardinality_matching. I realize that my graph is bipartite and that Edmond's algorithm is for general graph, but the graph library doesn't seem to have an algorithm optimized for bipartite graphs (please correct me if I'm wrong on this). My problem is this: in reading the documentation and the code I seem to understand that the implementation doesn't take into account the weight of the graphs. I'd like to know if it does take weights into account or not before I dive into learning the boost::graph library just to realize that it doesn't solve my problem. If the implementation doesn't take weights into account then is there another algorithm (or combination thereof) that I've overlooked from the library which could solve my problem? Sincerely, JF

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Suggestion for iterator_facade documentation
by Max Motovilov 12 Jul '07

12 Jul '07

It is not immediately obvious how to correctly specify the template arguments for boost::iterator_facade<> with an output iterator. This particular case is not mentioned in the tutorial and the first impression is that using such category as std::output_iterator_tag should be all that's required. This is not the case; in order for the postincrement temporary NOT to create a copy of a [fake] pointed-to value OR a copy of the proxy, the user has to be very careful about Value and Reference arguments. Took me 3 tries and a thorough look into the sources to get it right: Value=<argument of Proxy::operator=> and Reference=Proxy&. Would be nice to add this use case to the tutorial since it is definitely tricky and error-prone as it is. Of course there might be ANOTHER piece of documentation describing it that I missed :( Regards, ...Max...

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Re: [Boost-users] Question
by question boost 12 Jul '07

12 Jul '07

Hi Chun ping Wang, you seem to understand my problem. You say to run build.bat (see bjam.qbk), it's ok. Then you say to configure my environment. I've set the variables BOOST_ROOT and BOOST_BUILD_PATH but I get the message again. So I ask you what do you mean exactly by "configuring my environment"? Be very clear.(Step by step) Thank You Chun Ping Wang Date: Mon, 25 Jun 2007 07:49:14 -0700From: cablepuff(a)gmail.comTo: boost-users(a)lists.boost.orgSubject: Re: [Boost-users] QuestionYou need to build boost most likely with bjam. If your under windows go to tools/jam/src and type build.bat or if under unix ./build.sh and it should automatically build bjam.exe . You might need to configure your enviornment though. On 6/25/07, question boost <question.boost(a)hotmail.fr> wrote: Hi, using Code Blocks i get the folowing message.ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l"How and where can I get this file?Thank You Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail et bénéficiez d'un filtre antiphishing gratuit ! Windows Live Hotmail_______________________________________________Boost-users mailing listBoost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users _________________________________________________________________ Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail, plus sûr, plus simple et plus complet ! http://www.windowslive.fr/hotmail/default.asp

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[Boost.Graph] Property map of a bundled property
by Ewgenij Sokolovski 12 Jul '07

12 Jul '07

Nobody knows the answer?:) Am I the only one confronted with this question? I mean I could define a structure to include my distance and pass it as a bundled property but isn't that a rather unclean way to manage the problem? Cheers Ewgenij

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Re: [Boost-users] Building Boost on Solaris 10.
by Sabyasachi Nath 12 Jul '07

12 Jul '07

When using "--with-toolset=sun" it gives a message of unknown toolset. Whereas by using "--with-toolset=sunpro" it runs but giving the same problem. Thanks & Regards, Sabyasachi Nath Product Development Unit UshaComm India Pvt Ltd Emp Id 1295 WS 441 Tel: 9133-22812803/05/06 Mo: 919830622831 Extn 230 -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org]On Behalf Of Rene Rivera Sent: Wednesday, July 11, 2007 9:50 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Building Boost on Solaris 10. Sabyasachi Nath wrote: > I am new with Boost. I am facing the following problem while building Boost > 1.34.0. ... > ============ > -bash-3.00$ ./configure -- > prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 --with-libraries=all ... > Can anybody please sort out what the problem is? Add a "--with-toolset=sun" to the configure. -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim - grafikrobot/yahoo _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Compressed socket iostream
by gyrotech＠freakinabox.com 12 Jul '07

12 Jul '07

I've been looking over the boost documentation, but I can find anything to help me create an iostream for a socket. Can anyone point me in the direction of a tutorial or such that could help?? I found some references to asio, which was merged with boost in 2005, but the iostreams documentation was last updated in 2004. Also, is it possible\easy to add one of the compressing streams (basic_zlib_compressor for example) to an output socket stream so all the data sent over that TCP connection is compressed?? And on top of all of this, how would I go about making a stream that, if it had a socket connection, would stream data over that, otherwise to a file, both with the aforementioned compression? Thanks in advance, GyroTech

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[lexical_cast] C4701 local variable 'result' may be used without having been initialized
by Berny Cantos 12 Jul '07

12 Jul '07

Hi, I'm using boost::lexical_cast often in my application, but then I use it to convert strings to integral types and the compiler (MSVC 7.1) threw me a warning: C4701: local variable 'result' may be used without having been initialized Looking at lexical_cast implementation I found this template<typename Target, typename Source> Target lexical_cast(Source arg) { detail::lexical_stream<Target, Source> interpreter; // THIS is guilty of not been initialized Target result; if(!(interpreter << arg && interpreter >> result)) throw_exception(bad_lexical_cast(typeid(Source), typeid(Target))); return result; } I was asking myself... why not use Fernando Cacciola's boost::value_initialized to avoid these warnings? template<typename Target, typename Source> Target lexical_cast(Source arg) { detail::lexical_stream<Target, Source> interpreter; // This can't raise any uninitialized related warning boost::value_initialized<Target> result; if(!(interpreter << arg && interpreter >> get(result))) // Must use get idiom throw_exception(bad_lexical_cast(typeid(Source), typeid(Target))); return get(result); // Must use get idiom } Somebody can explain me this? Is this warning a compiler issue? Thanks in advance Berny Cantos AZ Interactive SL

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[1.34.1] Release Candidate 2
by Thomas Witt 12 Jul '07

12 Jul '07

Hi, The 1.34.1 release candidate 2 is now available from http://www.boost.org/release/ please give it a try and report any problems to the developer list or directly to me. Unless a major issue surfaces this will ship as 1.34.1 on July 13th. Thanks Thomas -- Thomas Witt witt(a)acm.org

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[Boost.Lambda] Can't bind (do a partial application on) basic operands
by Kirit Sælensminde 11 Jul '07

11 Jul '07

I'm trying to really understand the limits of what can be done in C++ with Boost.Function and Boost.Lambda by implementing a number of functional programming idioms in C++. I've done a few fairly complicated things, but seem to have run into a problem with a really basic one. I just want to do a partial application on some basic operands. This is what I'm trying to do: boost::function< int( int ) > increment( boost::lambda::_1 + 1 ); This gives an error that operator + isn't defined for the Boost placeholder type. If I add the following it works: template< typename V > V add( V l, V r ) { return l + r; } template< typename S > boost::function< S ( S ) > operator +( const boost::lambda::placeholder1_type, S s ) { return boost::lambda::bind( add< S >, boost::lambda::_1, s ); } I guess there's a huge number of these that could (should?) be added. Is this an oversight, or am I doing things with the library that I'm not meant to do? I'm using MSVC 7.1 and Boost 1.34.0 release candidate. K

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Building Boost on Solaris 10.
by Sabyasachi Nath 11 Jul '07

11 Jul '07

Hi Everybody, I am new with Boost. I am facing the following problem while building Boost 1.34.0. My system is Solaris 10. Compiler :- -bash-3.00$ CC -V CC: Sun C++ 5.8 Patch 121017-10 2007/02/21 ************** >From my $BOOST_ROOT location I started my building and installation as follows. ======== ============ -bash-3.00$ ./configure -- prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 --with-libraries=all -n Building Boost.Jam with toolset sunpro... tools/jam/src/bin.solaris/bjam ./configure: python: not found -n Unicode/ICU support for Boost.Regex?... /usr Generating Boost.Build configuration in user-config.jam... Generating Makefile... ============== -bash-3.00$ make install ./tools/jam/src/bin.solaris/bjam -sICU_PATH=/usr --user-config=user-config.jam - -prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 --exec- prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 -- libdir=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/lib -- includedir=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/include install sunpro.jam: No such file or directory /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/build/toolset.j am:27: in toolset.using rule sunpro.init unknown in module toolset. /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/build/project.j am:825: in using user-config.jam:5: in modules.load /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/build- system.jam:138: in load /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/kernel/modules. jam:261: in import /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/kernel/bootstra p.jam:132: in boost-build /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/boost-build.jam:9: in module scope Not all Boost libraries built properly. -bash-3.00$ ================ Can anybody please sort out what the problem is? Thanks in advance. Sabyasachi..

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