May 2004 - Boost-users - lists.preview.boost.org

Re: Boostifying GluCat
by Paul C. Leopardi 11 May '04

11 May '04

Hi all, Back in January last year, I asked if there was any documentation which could help me to Boostify GluCat: http://lists.boost.org/MailArchives/boost-users/msg02787.php Since then I have been very busy, but in the next few months I may be able to find the time to get this done right, so I'm asking again: GluCat is a new numeric template class library, hopefully destined for promotion to Boost. I would like to know where there is some documentation on how to: 1. Add concepts. Is there such a thing as a non-commutative multiplication concept? How do I check concepts? 2. Add numeric limits. Limits of U<T> would default to limits of T. 3. Add numeric promotion_traits. What are promotion_traits ? There is a discussion on ublas-dev mailing list about promotion_traits within uBLAS. 4. Add numeric type_traits. Also, is there a set of documented procedures which explain what is required for a library to be included in Boost? GluCat uses uBLAS. Should I take these questions to ublas-dev? Thanks

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Re: is_sequence
by Rozental, Gennadiy 11 May '04

11 May '04

> It already works. If you want to detect STL sequence-ness, you'll > have to try some nasty hacks. I'm have doubts about whether it's even > possible to approximate that metafunction in portable code. Wouldn't something about these lines work? template<typename T> char test( T const&, long ); template<typename T> int test( std::list<T> const&, int ); template<typename T> struct is_list { static T t; enum { value = sizeof( test( t, 0 ) ) == 4; } }; Gennadiy.

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[BGL] graph constness and vertex/edge iterators
by Cyrille Damez 11 May '04

11 May '04

Hi all, I'm currently trying to write a wrapper in order to use the BGL algorithms and visitors on a home-made graph class. If I'm not mistaken, this requires me to write (amongst other things) a couple functions that will return iterators over my graph edges and vertices, eg: std::pair<graph_traits<MyGraph>::out_edge_iterator, graph_traits<MyGraph>::out_edge_iterator > out_edges(graph_traits<MyGraph>::vertex_descriptor u, const MyGraph& g) and similarly in_edges(...) , vertices(...) and edges(...) functions. However, it seems that this function profile forces me to do a const_cast on g when implementing the function body since the out_edge_iterators are not const iterators, though they point to internal elements of g. I had a look at the example given in the documentation (dealing with converting LEDA graphs to the BGL), but I didn't see anything helping me on this particular issue (also, the example in the doc is a bit outdated since it uses the deprecated Boost iterator adaptors). Am I forced to rely on const_cast in these functions, or is there a way to declare my graph edges, vertices and the corresponding iterators as const in my graph_traits class ? I'm a newbie with the BGL, and more generally with this whole traits/template specialization style of programming, so please excuse me if I overlooked something obvious. Cheers.

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is_sequence
by Wolfgang Meyer 11 May '04

11 May '04

Is boost::mpl::is_sequence supposed to work with gcc 3.2.2 ? I'm trying to use it, but get "false" for boost::mpl::is_sequence<std::list<int> >::value using boost 1.31.0. The same happens with boost::mpl::has_begin. I'm working with FreeBSD 5.1. Any hints how to get it to work would be greatly appreciated. Wolfgang Meyer

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BOOST_NO_MEMBER_TEMPLATE_FRIENDS
by Witz 11 May '04

11 May '04

if the following code is commented out from visualc.hpp the standard streaming operators become available for mersenne_twister - and they seem to work fine. is this a bug or have i just been fortunate in my experimentation? #if _MSC_VER <= 1310 # define BOOST_NO_MEMBER_TEMPLATE_FRIENDS #endif ian whittley

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BGL: using an edge_descriptor as key in a map
by boost＠spyderworks.de 11 May '04

11 May '04

Hi, is it possible to use an edge_descriptor (boost::graph_traits<G>::edge_descriptor) as key in a map? I intend to write a visitor class which sets a boolean to each edge, and therefore I need the edge as key. The result of my first try is, that the compiler complains about the missing '<' operator of the key in the map. Best regards Stefan Rauch

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RE: [Boost-users] help: boost::thread and compile error
by Ben Hutchings 10 May '04

10 May '04

Guillermo Martony <gmartony(a)cue.com.uy> wrote: > Greetings, > The following code taken from an example compiles without errors: > > #include <boost/thread/thread.hpp> > #include <boost/thread/xtime.hpp> > #include <iostream> > class thread_alarm > { <snip> > }; > > int main() > { > int secs = 5; > std::cout << "setting alarm for 5 seconds..." << std::endl; > thread_alarm alarm(secs); > boost::thread thrd(alarm); > thrd.join(); > return 0; > } > > But adding a std::fstream varible to the thread_alarm class: <snip> > Results in the following compilation error: > > c:\opt\include\boost\function\function_template.hpp(289): > error C2664: 'void > boost::function0<R,Allocator>::assign_to(Functor)' : cannot convert > parameter 1 from 'const thread_alarm' to 'thread_alarm' > with > [ > R=void, > Allocator=int, > Functor=thread_alarm > ] The boost::thread constructor copies its argument, so the thread_alarm class needs to be copiable, but std::fstream is not copiable. You might be better off using Boost.Bind to produce a lightweight functor.

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boost::bind vs boost::mem_fun (was RE: [Boost-users] Re: shared_ptrs with std::mem_fn)
by Mark Storer 10 May '04

10 May '04

> > template<class _R, class _Ty> > > class mem_fun_t : public unary_function<_Ty *, _R> { > > public: > > explicit mem_fun_t(_R (_Ty::*_Pm)()) > > : _Ptr(_Pm) {} > > _R operator()(_Ty *_P) const > ^^^^^^^ > > {return ((_P->*_Ptr)()); } > > private: > > _R (_Ty::*_Ptr)(); > > }; > > --- > > <...> > No, the relevant part is the signature I highlighted above. <...> > > All I have to say is "use boost::mem_fn, which works, and never > touch the one in std::". Thanks for clearing that up, it was really bugging me. So to speak. ;) I've recently started using boost::bind, and I think I'm in love. But boost::mem_fun raises another question in my mind: Are there any cases where "boost::bind( &foo::bar, _1 )" is superior to "boost::mem_fun( &foo::bar )" (other than a few less keys to press)? I'd say that boost::bind is clearly supperior when "bar" takes a parameter, but when it does not, the water gets a little muddy. I'd imagine that you wouldn't get the long stream of error messages (expected N params not Y, expected N + 1 params, not Y, expected N + 2 ...) from bind when all the different variants miss, but is there anything else? --Mark Storer Senior Software Engineer Verity, Inc.

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RE: [Boost-users] boost 1.30 / date_time / link problem with VC7
by Ben Hutchings 10 May '04

10 May '04

Dan Dimerman <dan_dimerman(a)hotmail.com> wrote: > I'm having the following problem when linking a MSWindows MFC > application with the static library libboost_date_time.lib using > DevStudio .Net 7.0. > > The output looks like this: > > ------ Build started: Project: Main, Configuration: Debug Win32 ------ > Linking... > MSVCRTD.lib(ti_inst.obj) : error LNK2005: "private: __thiscall > type_info::type_info(class type_info const &)" > (??0type_info@@AAE@ABV0@@Z) already defined in libcmtd.lib(typinfo.obj) > MSVCRTD.lib(ti_inst.obj) : error LNK2005: "private: class type_info & > __thiscall type_info::operator=(class type_info const &)" > (??4type_info@@AAEAAV0@ABV0@@Z) already defined in > libcmtd.lib(typinfo.obj) > LINK : warning LNK4098: defaultlib 'MSVCRTD' conflicts with > use of other libs; use /NODEFAULTLIB:library > Debug/Main.exe : fatal error LNK1169: one or more multiply > defined symbols found > > I am working with the "Multi-threaded Debug (/MTd)" version of > libraries. > Tried using alternatives, but I got errors elsewhere and the > errors above persisted. > From boost, I am using the library built at "My Documents\Visual > Studio Projects\boost\libs\date_time\build\bin\libboost_date_time.lib > \vc7\debug\runtime-link-dynamic" > > Any help will be greatly appreciated... You are using the debug DLL version of the date_time library. In order to share a heap with the main program this uses the debug DLL version of the C++ run-time library (MSVCRTD) and requires that the main program uses it too. You must either: (1) Build and use the debug multi-threaded static version of the date_time library. (2) Use the debug DLL versions of the C++ run-time library and MFC in your main program.

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help: boost::thread and compile error
by Guillermo Martony 10 May '04

10 May '04

Greetings, The following code taken from an example compiles without errors: #include <boost/thread/thread.hpp> #include <boost/thread/xtime.hpp> #include <iostream> class thread_alarm { public: thread_alarm(int secs) : m_secs(secs) { } void operator()() { boost::xtime xt; boost::xtime_get(&xt, boost::TIME_UTC); xt.sec += m_secs; boost::thread::sleep(xt); std::cout << "alarm sounded..." << std::endl; } private: int m_secs; }; int main() { int secs = 5; std::cout << "setting alarm for 5 seconds..." << std::endl; thread_alarm alarm(secs); boost::thread thrd(alarm); thrd.join(); return 0; } But adding a std::fstream varible to the thread_alarm class: #include <fstream> #include <boost/thread/thread.hpp> #include <boost/thread/xtime.hpp> #include <iostream> class thread_alarm { public: thread_alarm(int secs) : m_secs(secs) { } void operator()() { boost::xtime xt; boost::xtime_get(&xt, boost::TIME_UTC); xt.sec += m_secs; boost::thread::sleep(xt); std::cout << "alarm sounded..." << std::endl; } private: int m_secs; std::fstream fs; // only this line was added }; int main() { int secs = 5; std::cout << "setting alarm for 5 seconds..." << std::endl; thread_alarm alarm(secs); boost::thread thrd(alarm); thrd.join(); return 0; } Results in the following compilation error: c:\opt\include\boost\function\function_template.hpp(289): error C2664: 'void boost::function0<R,Allocator>::assign_to(Functor)' : cannot convert parameter 1 from 'const thread_alarm' to 'thread_alarm' with [ R=void, Allocator=int, Functor=thread_alarm ] I'm using Microsoft Studio .NET 2002 Thanks in advance for any help. Guillermo Martony

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Building 1.31.0 with intel-linux for Itanium 2
by Richard Hadsell 10 May '04

10 May '04

I am trying to build the Boost libraries on an Itanium 2 Linux machine using Intel C++ 8.0. The problem is that bjam is creating a directory path for the release versions that uses the string "ebug release" instead of "release". For example: MkDir1 bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug release intel-linux-C++-action bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug release/c_regex_traits.o ... Despite the directory that it creates with an embedded space, everything actually continues quite well, until it tries to run ranlib: intel-linux-Archive-action bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug release/libboost_regex-il-1_31.a Ranlib bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug release/libboost_regex-il-1_31.a ranlib: bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug: No such file or directory ranlib bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug release/libboost_regex-il-1_31.a ...failed Ranlib bin/boost/libs/regex/build/libboost_regex.a/intel-linux/ebug release/libboost_regex-il-1_31.a... I built bjam with this: build.sh intel-linux And I built the libraries with this: bjam -sTOOLS=intel-linux -sINTEL_PATH=/usr/local/intel/compiler80/ia64 --with-python-root=/usr --stagedir=stage -sBUILD="debug release <threading>single" stage Can anyone suggest what might be wrong with my system? It is a loaner, so everything is untested as far as I'm concerned. I have no idea what other tools in addition to Bjam itself might be involved in causing this problem. -- Dick Hadsell 914-259-6320 Fax: 914-259-6499 Reply-to: hadsell(a)blueskystudios.com Blue Sky Studios http://www.blueskystudios.com 44 South Broadway, White Plains, NY 10601

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Re: [Boost-users] Posix extended regexp
by Manish Madan 08 May '04

08 May '04

Thanks a lot for the help John, it works now regards Manish >>> john(a)johnmaddock.co.uk 5/6/2004 1:58:27 AM >>> > What am I doing wrong? > > Here's my short matching function: > > bool MatchRegExp(const std::string& matchThis, const std::string& > againstThis) > { > try > { > const boost::regex e(againstThis);//, > boost::regex_constants::icase); > return boost::regex_match(matchThis, e, > boost::regex_constants::extended); > } > catch(boost::bad_expression be) > { > return false; > } > > } You're passing the wrong constants in all the wrong places, it should have been: const boost::regex e(againstThis, boost::regex::extended); return boost::regex_match(matchThis, e, boost::match_default); You can omit the match_default flag (since it's the default anyway), and if you wanted case insensitive matching it would have been: const boost::regex e(againstThis, boost::regex::extended | boost::regex::icase); Oh, and don't forget to check the difference between regex_match and regex_search (the match version requires all of the text to match). John. _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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RE: [Boost-users] Re: shared_ptrs with std::mem_fn
by Mark Storer 08 May '04

08 May '04

> boost::mem_fn erases the need for a separate mem_fn_ref. If > http://www.boost.org/libs/bind/mem_fn.html fails to explain it to you, > please ask more specific questions. I thought I'd been pretty specific... guess not. Allow me to reiterate: Why doesn't std::mem_fun work with a container of boost::shared_ptr? I fiddled around with my compiler for a while (vc6), but ended up with a wildly unhelpful error message. Given the following lines of code (among others): --- typedef std::vector<boost::shared_ptr<std::string> > Strings; Strings strings; std::for_each( strings.begin(), strings.end(), std::mem_fun(std::string::size) ); --- my compiler puked up the following wildly useless error message: --- error C2664: 'mem_fun' : cannot convert parameter 1 from 'unsigned int (__thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::*' to 'unsigned int (__thisca ll std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::*' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast --- Allow me to pull out those two types for easier viewing: unsigned int (__thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::* unsigned int (__thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::* Golly. Those 'two' types are about as related as you can get. So why won't std::mem_fun work through boost::shared_ptr's operator->? Here's the mem_fun that ships with VC6: --- template<class _R, class _Ty> class mem_fun_t : public unary_function<_Ty *, _R> { public: explicit mem_fun_t(_R (_Ty::*_Pm)()) : _Ptr(_Pm) {} _R operator()(_Ty *_P) const {return ((_P->*_Ptr)()); } private: _R (_Ty::*_Ptr)(); }; --- The relevant portion to our discussion is: "{return ((_P->*_Ptr()); }" which can be further boiled down to: return _P->_Ptr(); This looks an awful lot like it should work with a shared_ptr's operator->(). So why doesn't it? I admit that this is more of a C++ question than a boost one, but it's not too much of a tangent and I *am* curious. Mentioning mem_fun_ref in my previous post only served to muddy the waters. My apologies. --Mark Storer Senior Software Engineer Verity, Inc.

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shared_ptrs with std::mem_fn
by Steve Folly 07 May '04

07 May '04

Hi, I've converted a container to use shared_ptrs instead of regular pointers, now my for_each algorithm doesn't work: Before: class Attr; std::vector< Attr* > mAttributes; . . . std::for_each( mAttributes.begin(), mAttributes.end(), std::bind2nd( std::mem_fn( &Attr::Write ), output ) ); After: std::vector< shared_ptr<Attr> > mAttributes; Now it doesn't compile because (of course) Attr::Write is not a method of shared_ptr<Attr>. Do I have to use boost's bind and mem_fn objects instead of std? Thanks for any help. -- Regards, Steve.

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RE: [Boost-users] Re: shared_ptrs with std::mem_fn
by Mark Storer 07 May '04

07 May '04

> > Now it doesn't compile because (of course) Attr::Write is > not a method of > > shared_ptr<Attr>. > > > > Do I have to use boost's bind and mem_fn objects instead of std? > > Yes; bind and mem_fn handle this problem (and quite a few > others) automatically. Why is this a problem? I thought std::mem_fn called the function through the -> operator, which 'should' work (but obviously doesn't). I would think this would only crop up through mem_fun_ref, but then you wouldn't have a container of shared_ptr<Attr>, but Attr. --Baffled --Mark Storer Senior Software Engineer Verity, Inc.

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RE: [Boost-users] date_time clocks, microsec_clock, etc
by Darryl Green 07 May '04

07 May '04

> For those that need something portable we should be able to > get microsecond > resolution for Windows, Linux, and probably a few more... > > Jeff Microsecond resolution on linux? What interface provides this? I have a linux platform or 2 that I'm pretty sure won't provide it at present, but probably could with some kernel hacking, if only there was some sensible interface to connect it to user space. Darryl. ########################################################################## This e-mail is for the use of the intended recipient(s) only. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not use, disclose or distribute this e-mail without the author's prior permission. We have taken precautions to minimise the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. ##########################################################################

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how to install library in msvc
by kason aung 07 May '04

07 May '04

Dear all, I'm trying to install BGL on win 2k, vc++ 6 machine. I can't install BGL now. So if u have already successfully installed on msvc, i would like to know step-by-step installation procedure. I am looking forward to hearing good news from all of you. Thanks a lot for ur help and kindness. Regards, Kason _________________________________________________________________ Download games, logos, wallpapers and lots more at MSN Mobile! http://www.msn.com.sg/mobile/

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date_time clocks, microsec_clock, etc
by Aaron W. LaFramboise 07 May '04

07 May '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, I'm a little curious whats in the works for date_time clock support. Specifically, there still doesn't seem to be anything better than a second-granularity clock for Win32. In addition, the UNIX clock is not always as precise as it could be. In particular, the popular Pentium and and some other architectures have some sorts of cycle-granularity hardware clock or similar that can exceed the usual operating system clock used for time. Really--and I have no idea what work is presently being done on this--it might do people in some problem domains (including myself, at times) a lot of good to have clocks with separate notions of precision and accuracy. For example, on a Pentium, operating systems I care about tend to have a maximum system clock accuracy around about a millisecond plus or minus some, and its probably difficult or tricky to get better than that. However, if the system clock was used in combination with the Pentium cycle counter, we could probably get precision in excess of a nanosecond. Perhaps an interface for such a clock system might be: typedef boost::date_time::clock<type_of_accuracy_you_need_here, type_of_precision_you_need_here> myclock; To get the above imagined clock, I might use: clock<microsecond_accuracy, cycle_precision> If the clock requested was unavailable on the platform, a compile time error might result. Of course, oftentimes we know the characteristics of a clock's accuracy or precision, such as the Pentium cycle counter, but we don't know exactly how precise it is, so it might be inappropriate to refer to that clock as nanosecond_precision when it really might not be. In summary, a reliable cross-platform sub second clock is one of the features I miss most in date_time, and one of the features I can afford to miss least. Is anyone working on remedying this right now? Aaron W. LaFramboise OpenPGP fingerprint: CFB4 D883 17ED E9BE 6F16 1BF7 969F E586 75AC 33C4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFAlZuhxDYk2wAn5+8RAg5jAJ0XINhLFb4KikH+oK286PQfu6iMaQCgnTe5 SlmNLXTitPUWuUYMKrHIQgY= =bJvg -----END PGP SIGNATURE-----

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Using pool_alloc with std::map
by Kevin Lin 06 May '04

06 May '04

I am using boost::pool_alloc with std::map like this: typedef map<int, int, less<int>, pool_alloc<pair<int, int> > > MapT; MapT myMap; After myMap passes out of scope, I want to release unused memory from the pool. To do that, I need to get the type used to request chunks from the pool. pair<int, int> is not the answer since map uses rebind to get a different allocator. So how do I go about obtaining the correct singleton_pool interface? Your help is appreciated. -- Kevin Lin

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Question about compiling boost.1.31.0 on Solaris
by Wenning Qiu 06 May '04

06 May '04

I was trying to build the regex library from boost.1.31.0 on a Solaris 7 box using STLport.4.6.2. I have a couple of STLport versions installed in /opt. Here's how I built: o cd boost_1_31_0/libs/regex/build o /export/home/qiuw01/research/boost-jam-3.1.9/bin.solaris/bjam "-sTOOLS=sunpro-stlport" -sSTLPORT_PATH=/opt I was expecting STLport.4.6.2 to be used. However when I used ldd on the generated .so library, it shows a dependency on an old version of STLport in /usr/lib qiuw01$ ldd libboost_regex-sw-p-1_31.so librt.so.1 => /usr/lib/librt.so.1 libstlport_sunpro.so.4.5 => /usr/lib/libstlport_sunpro.so.4.5 libaio.so.1 => /usr/lib/libaio.so.1 libc.so.1 => /usr/lib/libc.so.1 libdl.so.1 => /usr/lib/libdl.so.1 /usr/platform/SUNW,Ultra-4/lib/libc_psr.so.1 <ethos:~/research/boost_1_31_0/bin/boost/libs/regex/build/libboost_regex.so/ sunpro-stlport/release> This doesn't seem to be right. Any comments? Thanks, Wenning Qiu

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boost::any and arithmetic ?
by Mailing List 06 May '04

06 May '04

Greetings all, as I'm new to this list, I'll keep my query short. It was suggested to me to use boost::any to store numeric values of whatever type (int, float, double, etc) so that I could use one std::list to store multiple values. I've looked through the header (any.hpp) and I admit it's a little hard for me to follow. I'm not what you'd call a superprogrammer... yet. :) I understand how to store a value in the boost::any object, but I'm not clear on how one would get that value back later (for display on screen, etc). What I'd really like to do is similar to one of the examples: --- snip --- struct property { property(); property(const std::string &, const boost::any &); std::string name; boost::any value; }; typedef std::list<property> properties; --- snip --- But I want to be able to do arithmetic with the resultant object(s): property T; property V; property Z; T [+-*/] Z; T = V [+-*/] Z T + [int,float,etc]; And so on. However, I want to make sure that the normal arithmetic type conversions (type promotions) take place (i.e. int + float returns a temporary object of type float). Example: boost::any value1; boost::any value2; boost::any value3; value1 = 127.915; value2 = 17; value3 = value1.getwhatevervalue() + value2.getwhatevervalue(); cout << value3.getwhatevervalue() << endl; value3 = value2.getwhatevervalue() + value1.getwhatevervalue(); cout << value3.getwhatevervalue() << endl; Both should return a temporary float with a value of 144.915. since I don't know how to get the value from boost::any, I just used getwhatevervalue() as an example. Sincerely, GRE

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Posix extended regexp
by Manish Madan 05 May '04

05 May '04

Hello, I'm new to boost and I had one question. I'm trying to match strings against regular expressions that are expected to be posix extended regular expressions. But for some reason, the modifier ^ doesn't seem to be working. For example, when I try to match "Manish" against "^[mM]anish.*", I am returned false. What am I doing wrong? Here's my short matching function: bool MatchRegExp(const std::string& matchThis, const std::string& againstThis) { try { const boost::regex e(againstThis);//, boost::regex_constants::icase); return boost::regex_match(matchThis, e, boost::regex_constants::extended); } catch(boost::bad_expression be) { return false; } } thanks Manish

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boost 1.30 / date_time / link problem with VC7
by Dan Dimerman 05 May '04

05 May '04

Hello, I'm having the following problem when linking a MSWindows MFC application with the static library libboost_date_time.lib using DevStudio .Net 7.0. The output looks like this: ------ Build started: Project: Main, Configuration: Debug Win32 ------ Linking... MSVCRTD.lib(ti_inst.obj) : error LNK2005: "private: __thiscall type_info::type_info(class type_info const &)" (??0type_info@@AAE@ABV0@@Z) already defined in libcmtd.lib(typinfo.obj) MSVCRTD.lib(ti_inst.obj) : error LNK2005: "private: class type_info & __thiscall type_info::operator=(class type_info const &)" (??4type_info@@AAEAAV0@ABV0@@Z) already defined in libcmtd.lib(typinfo.obj) LINK : warning LNK4098: defaultlib 'MSVCRTD' conflicts with use of other libs; use /NODEFAULTLIB:library Debug/Main.exe : fatal error LNK1169: one or more multiply defined symbols found I am working with the "Multi-threaded Debug (/MTd)" version of libraries. Tried using alternatives, but I got errors elsewhere and the errors above persisted. >From boost, I am using the library built at "My Documents\Visual Studio Projects\boost\libs\date_time\build\bin\libboost_date_time.lib\vc7\debug\run time-link-dynamic" Any help will be greatly appreciated... -- Dan Dimerman --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com) Version: 6.0.677 / Virus Database: 439 - Release Date: 04-May-04

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boost 1.31 compile problems
by Dave Thorn 05 May '04

05 May '04

After installing boost and trying to compile a project I found I was missing some files. The end of the installation shows: ...failed updating 24 targets... ...skipped 48 targets... ...updated 625 targets... Errors below. I'm running Debian woody, using gcc 2.95.4. Some of the errors: cp: cannot stat `bin/boost/libs/test/build/libboost_test_exec_monitor.so/gcc/debug/shared-linkable-true/threading-multi/libboost_test_exec_monitor-gcc-mt-d-1_31.so.1.31.0': No such file or directory gcc-C++-action bin/boost/libs/test/build/libboost_unit_test_framework.a/gcc/release/threading-multi/test_tools.o /usr/local/src/boost_1_31_0/libs/test/build/../src/test_tools.cpp: In method `void boost::test_toolbox::detail::print_log_value<char>::operator ()(ostream &, char)': /usr/local/src/boost_1_31_0/libs/test/build/../src/test_tools.cpp:194: parse error before `(' /usr/local/src/boost_1_31_0/libs/test/build/../src/test_tools.cpp:205: confused by earlier errors, bailing out ...skipped <@boost!lib>libboost_unit_test_framework-gcc-mt-1_31.a for lack of <@boost!libs!test!build/libboost_unit_test_framework.a/gcc/release/threading-multi>libboost_unit_test_framework-gcc-mt-1_31.a... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc-d.so for lack of <@boost!lib>libboost_test_exec_monitor-gcc-d-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc-mt-d.so for lack of <@boost!lib>libboost_test_exec_monitor-gcc-mt-d-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc.so for lack of <@boost!lib>libboost_test_exec_monitor-gcc-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc-mt.so for lack of <@boost!lib>libboost_test_exec_monitor-gcc-mt-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_unit_test_framework-gcc-d.so for lack of <@boost!lib>libboost_unit_test_framework-gcc-d-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_unit_test_framework-gcc-mt-d.so for lack of <@boost!lib>libboost_unit_test_framework-gcc-mt-d-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_unit_test_framework-gcc.so for lack of <@boost!lib>libboost_unit_test_framework-gcc-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_unit_test_framework-gcc-mt.so for lack of <@boost!lib>libboost_unit_test_framework-gcc-mt-1_31.so.1.31.0... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc-d.a for lack of <@boost!lib>libboost_test_exec_monitor-gcc-d-1_31.a... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc-mt-d.a for lack of <@boost!lib>libboost_test_exec_monitor-gcc-mt-d-1_31.a... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc.a for lack of <@boost!lib>libboost_test_exec_monitor-gcc-1_31.a... ...skipped <@boost!lib>libboost_test_exec_monitor-gcc-mt.a for lack of <@boost!lib>libboost_test_exec_monitor-gcc-mt-1_31.a... ...skipped <@boost!lib>libboost_unit_test_framework-gcc-d.a for lack of <@boost!lib>libboost_unit_test_framework-gcc-d-1_31.a... ...skipped <@boost!lib>libboost_unit_test_framework-gcc-mt-d.a for lack of <@boost!lib>libboost_unit_test_framework-gcc-mt-d-1_31.a... ...skipped <@boost!lib>libboost_unit_test_framework-gcc.a for lack of <@boost!lib>libboost_unit_test_framework-gcc-1_31.a... ...skipped <@boost!lib>libboost_unit_test_framework-gcc-mt.a for lack of <@boost!lib>libboost_unit_test_framework-gcc-mt-1_31.a... -- dave thorn

3 4

Boost license and Open Source
by eze.boost.org.users＠secureit.mailshell.com 04 May '04

04 May '04

Hi. I'm thinking of starting an open source project, and I'm seriously considering using Boost. I've read many messages regarding the practical aspects of using boost with other projects (particularly open source). However, I have found nothing useful regarding the legal aspect of using Boost for an open source project. As I'm considering licensing my project under the GPL, I'm concerned about the GPL "friendlyness" towards Boost. Besides the technical aspect of it, what is the best way to structure the project, to license the project, etc. in order to satisfy GPL and Boost licenses? Any help would be much appreciated. Best regards, Ezequiel "This communication is intended solely for the addressee and is confidential and not for third party unauthorised distribution."

4 3

CVS instructions at http://www.boost.org/more/getting_started.html#CVS don't work.
by Aaron W. LaFramboise 04 May '04

04 May '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I tried to get a copy of Boost CVS using the instructions at http://www.boost.org/more/getting_started.html#CVS, but I got this error: ~ $ cvs -d:pserver:anonymous@cvs.boost.sourceforge.net:/cvsroot/boost login ~ Logging in to :pserver:anonymous@cvs.boost.sourceforge.net:2401/cvsroot/boost ~ CVS password: ~ cvs [login aborted]: connect to cvs.boost.sourceforge.net(66.35.250.209):2401 failed: Connection timed out However, when I use the SF CVS instructions at http://sourceforge.net/cvs/?group_id=7586, I have no problems. It recommends the following line instead. cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/boost login The difference seems to be cvs.boost.sourceforge.net versus cvs.sourceforge.net. Is this a temporary technical problem? Or should the instructions on the getting_started.html be updated? Thanks, Aaron W. LaFramboise OpenPGP fingerprint: CFB4 D883 17ED E9BE 6F16 1BF7 969F E586 75AC 33C4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFAlnS+lp/lhnWsM8QRAv6OAKCXKS7Kcd5JubzUQqQIk8eIbhlisgCghpyR FptrqZlFgVC8tGRxmLz6Cic= =zRlP -----END PGP SIGNATURE-----

3 2

regex_search (v4) raises exception for wregex
by Adam Molnar 03 May '04

03 May '04

hi! the following pattern (35 matching token, and at least one more) with this simple expression ("[_]+$") throws "memory exhausted" when using wchar_t strings. the same works with char strings even triple sized. matching doesnt throw, if we use "^[_]+$", "[_]{1,}$", "[_][_]*$" etc. so this is a bug. it seems the expression-string is short enough to cause some problem, but i was unable to track down the error. wchar_t * wp = L"___________________________________x"; wregex wre(L"[_]+$"); try { regex_search(wp, wre); } catch (bad_expression & e) { cout << e.what() << endl; } another issue: i think, "(one|two|three|)" style alternation (notice the empty string on the right) should be accepted and handled as "(one|two|three)?" now it throws bad_expression

4 4

Problem 2 with Boost 1.31.0 Regex for tru64cxx65
by Richard Hadsell 03 May '04

03 May '04

Having persuaded everything to compile in the 1.31.0 Regex library, it runs into another problem in building the .a archive libraries: tru64cxx65-Archive-action bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a /bin/sh: /bin/ar: arg list too long rm -f bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a ar r bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/c_regex_traits.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/c_regex_traits_common.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/cpp_regex_traits.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/cregex.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/fileiter.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/posix_api.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/regex.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/regex_debug.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/regex_synch.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/w32_regex_traits.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/wide_posix_api.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/instances.o bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/winstances.o "bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release"/cxx_repository/* ...failed tru64cxx65-Archive-action bin/boost/libs/regex/build/libboost_regex.a/tru64cxx65/release/libboost_regex-tru-1_31.a... The problem is due to the number of instantiations in the template repository and the lengths of their names. There are 492 instantiations, and many of them have 90-character file names, which looks like the compiler's maximum allowed. I solved the problem in previous versions of boost by breaking up the build into separate steps. This was the way I modified the make file: AR:= ar -cq IIDIR:= $(LIBDIR)/cxx_repository $(DIRNAME)/lib$(LIBNAME).a : $(ALL_O) @echo "*** creating lib$(LIBNAME).a" rm -f $@ $(AR) $@ $^ @echo "*** adding template instantiations" $(AR) $@ $(IIDIR)/[_A-Z]* $(AR) $@ $(IIDIR)/[a-z]* It builds the library from just the object files and then adds the instantiations in two steps. (Apparently, adding all of them exceeded the same shell arg list limit.) How can I do something equivalent with bjam to build the library? -- Dick Hadsell 914-259-6320 Fax: 914-259-6499 Reply-to: hadsell(a)blueskystudios.com Blue Sky Studios http://www.blueskystudios.com 44 South Broadway, White Plains, NY 10601

6 16

regex patches available
by John Maddock 03 May '04

03 May '04

All users of Boost.Regex-1.31.1 should be aware that there are now a set of patches available for this release - see https://sourceforge.net/project/showfiles.php?group_id=7586 for downloads. Issues fixed include: POSIX style regular expressions not behaving correctly with regex_grep. Non-greedy repeats not backtracking correctly in some cases. Backreferences cause some repeat operators to behave incorrectly. Some wide character expressions weren't getting correctly optimised, leading to thrown exceptions in trivial cases. Misc. compiler compatibility fixes. Regards, John Maddock

1 0

Compiling BOOST_1_30_0 UNDER HPUX B.11.11
by Albert Gome 03 May '04

03 May '04

Hi, I am trying to Install BOOST_1_30_0 on HPUX B.11.11 using aCC Version HP ANSI C++ B3910B A.03.33. Fisrtly i tried to build the thread libaray under <BOOST_ROOT>/lib/thread/build using statement bjam -sTOOLS="acc" -sBuild="debug release" I tried thread first because the regex compilation was also giving problems. Though Compiling the threads library result in MkDir1 ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Unexpected 'template'. ::template result_<T> ^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '{' expected instead of '<'. ::template result_<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '<' expected before '>'. ::template result_<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 60 # ';' expected instead of '{'. { ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # A template name was expected instead of 'T'. Did you forget to define the template? ::template result_<T> ^^ Error 263: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Object expected in declaration list. ::template result_<T> ^^ Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Unexpected 'template'. struct enable_if : public enabled<Enabled>::template base<T> ^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '{' expected instead of '<'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '<' expected before '>'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 323 # ';' expected instead of '{'. { ^ Error 419: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # 'T' is used as a type, but has not been defined as a type. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # A template name was expected instead of '<type inserted by compiler>'. Did you forget to define the template? struct enable_if : public enabled<Enabled>::template base<T> ^ Error 699: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Error limit reached; halting compilation. struct enable_if : public enabled<Enabled>::template base<T> ^ aCC -AA -c +W823 -I/mnt/r7/apal3/lib/boost_1_30_0 -DBOOST_THREAD_BUILD_DLL=1 -mt -g +Z -I"../../../libs/thread/build" -I"/mnt/r7/apal3/lib/boost_1_30_0" -o "../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o" "../src/condition.cpp" ...failed aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o... Then i downloaded the lates is_functions.hpp from the CVS which again resulted in aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Unexpected 'template'. ::BOOST_NESTED_TEMPLATE result_<T> ^^^^^^^^^^^^^^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '{' expected instead of '<'. ::BOOST_NESTED_TEMPLATE result_<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # '<' expected before '>'. ::BOOST_NESTED_TEMPLATE result_<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 60 # ';' expected instead of '{'. { ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # A template name was expected instead of 'T'. Did you forget to define the template? ::BOOST_NESTED_TEMPLATE result_<T> ^^ Error 263: "/mnt/r7/apal3/lib/boost_1_30_0/boost/type_traits/is_function.hpp", line 59 # Object expected in declaration list. ::BOOST_NESTED_TEMPLATE result_<T> ^^ Error 19: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Unexpected 'template'. struct enable_if : public enabled<Enabled>::template base<T> ^^^^^^^^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '{' expected instead of '<'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 20: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # '<' expected before '>'. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 24: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 323 # ';' expected instead of '{'. { ^ Error 419: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # 'T' is used as a type, but has not been defined as a type. struct enable_if : public enabled<Enabled>::template base<T> ^ Error 318: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # A template name was expected instead of '<type inserted by compiler>'. Did you forget to define the template? struct enable_if : public enabled<Enabled>::template base<T> ^ Error 699: "/mnt/r7/apal3/lib/boost_1_30_0/boost/function/function_base.hpp", line 322 # Error limit reached; halting compilation. struct enable_if : public enabled<Enabled>::template base<T> ^ aCC -AA -c +W823 -I/mnt/r7/apal3/lib/boost_1_30_0 -DBOOST_THREAD_BUILD_DLL=1 -mt -g +Z -I"../../../libs/thread/build" -I"/mnt/r7/apal3/lib/boost_1_30_0" -o "../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o" "../src/condition.cpp" ...failed aCC-C++-action ../../../libs/thread/build/bin/libboost_thread.so/acc/debug/runtime-link-dynamic/shared-linkable-true/threading-multi/condition.o... which is agian the same later i also tried to run configure using export CXX="aCC" export CXXFLAGS="-Aa -DAportable -D__HPACC_THREAD_SAFE_RB_TREE -DRWSTD_MULTI_THREAD -DRW_MULTI_THREAD -D_REENTRANT -D_THREAD_SAFE" export LDFLAGS="-DAportable" export LIBS="-lpthread" ./configure and coping the user.hpp to right location still the same error presist. Is there any way out to compile this? what can be done to resolve it. I don't want to use GCC on HPUX. Rgds Albert --------------------------------- Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs

3 3

Problem building Boost 1.31.0 for VC6
by Estese 02 May '04

02 May '04

Hi, I'm trying to build the Boost 1.31.0 libraries for VC6 (on WinXP). My installation of MSVC is "C:\Program Files\Microsoft Visual Studio\VC98". All my user environment variables point to this location, as they should. I created the bjam executable, placed it in my Boost root (C:/boost_1_31_0), and then ran bjam with the following command: bjam "-sTools=msvc" However, it attempts to run the following command for every library: "CALL D:\Program Files\Microsoft Visual Studio .NET 2003\VC7\bin\cl" I don't even have .NET installed on my PC! Why would it be doing this? I tried explicitly telling bjam where vc6 is with the -sMSVC_ROOT argument, but it always outputs the same result. I've verified all my user environment variables, and they all point to C: and to VC6, as they should. I don't know why bjam insists on trying to build the boost libraries for Visual Studio .NET. Any thoughts? Sean Estey __________________________________ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover

2 1

serialization library
by Russell Balest 01 May '04

01 May '04

Robert, Thank you for writing the serialization library. I'm in awe that someone finally did this so well. I've been using it for 2 days and think it's fantastic. I've been mucking with serialization frameworks myself for 8 years; now this will trump all my efforts and I'll give up and switch. Many Thanks, Russell Balest

1 0

RE: [Boost-users] Re: Config question:BOOST_NO_INTRINSIC_WCHAR_T(Intel7.1)
by Ben Hutchings 01 May '04

01 May '04

Christopher D. Russell <cdr(a)encapsule.com> wrote: > Thanks to Ben, Aleksey & John for the quick responses. > >And yes we know this is pain > Actually adding a command line switch, or punching the define into > user.hpp isn't all too bad in the grand scheme of things. > > Until Intel provides the cues required, may I suggest that a comment > be placed in boost/type_traits/is_integral.h at line 38: > > #ifndef BOOST_NO_INTRINSIC_WCHAR_T > // If the following line fails to compile and you're using the Intel > // compiler, see > // http://lists.boost.org/MailArchives/boost-users/msg06567.php <snip> It seems to me that it would be better still to put #ifdef BOOST_NO_INTRINSIC_WCHAR_T BOOST_STATIC_ASSERT(is_same<unsigned short, wchar_t>::value); #else BOOST_STATIC_ASSERT(!is_same<unsigned short, wchar_t>::value); #endif after the conditional definition of BOOST_NO_INTRINSIC_WCHAR_T to verify that the macro has been set/unset correctly. Ben.

3 3

lexical_cast<string> of type char
by DY, JERRY U (SBCSI) 01 May '04

01 May '04

I'm converting our code to use lexical_cast for converting between our numeric types to string. It worked mostly but was surprised to see what looked like graphic characters on my screen. It turns out that when we wanted to display the ascii value of a character, lexical_cast<string> doesn't work -- it doesn't treat the char as a numeric, which when we really think about it, makes a lot of sense. Casting the char to int solves the problem. But I was just wondering how the experts would handle this. char c = 65; string s1 = lexical_cast<string>(c) // s1 = "A" string s2 = lexical_cast<string>((int)c) // s2 = "65" Thanks! -Jerry

3 3

A BUG WITH THE BGL
by Hugues Joly 01 May '04

01 May '04

Hi, I have found a bug with the adjacency_list. It seems that there's a bug with the deletion of a vertex. See the attachment for a small program that triggers the problem. Thanks in advance. __________________________________________________________ Lèche-vitrine ou lèche-écran ? magasinage.yahoo.ca // test.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <boost/config.hpp> #include <iostream> #include <boost/graph/subgraph.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/graph_utility.hpp> int _tmain(int argc, _TCHAR* argv[]) { using namespace boost; //typedef adjacency_list_traits<vecS, vecS, directedS> Traits;// Does nothing? typedef boost::property<boost::vertex_color_t, int, boost::property< boost::vertex_name_t, std::string > > VertexProperty; typedef adjacency_list<vecS, vecS, directedS, VertexProperty, property<edge_index_t, int> > Graph; Graph G0; Graph::vertex_descriptor v_descr[4]; Graph::edge_descriptor e_descr[4]; for (int i = 0; i < 4; i++) { v_descr[i] = boost::add_vertex(G0); } for (int i = 0; i < 4; i++) { boost::remove_vertex(v_descr[i], G0); } return 0; }

2 1