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problems with posix
by silvermangbs 08 Nov '02

08 Nov '02

Since I don't have librt.so on my Solaris (2.6 & 8) machines, I am trying to get Boost to use libposix4.so (which contains the same functions). I have substituted "posix4" for "rt" in the configure and configure.in files. I have done the same for the gcc-tools.jam file, since, I am using gcc (2.95.2 and 3.2). All seems to go well until I try to run the thread tests. Then, the linker is unable to find the posix4 library! What's going on? libposix4.so is in /usr/lib, so, the gcc compiler should be able to find it. Any ideas? Greg Silverman TRW Sunnyvale, CA

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year_iterator
by deane_yang 08 Nov '02

08 Nov '02

Contrary to the documentation, the type "year_iterator" does not appear to be defined in the file "gregorian_types.hpp". Or did I miss something?

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Trouble compiling regexpp example
by Cameron McCormack 08 Nov '02

08 Nov '02

Hi everyone. I'm using the libboost-regex Debian package and I'm trying to compile one of the example programs, regex_match_example.cpp. I am compiling with the command g++ -g -Wall -lboost_regex regex_match_example.cpp \ -o regex_match_example but I get many errors: /tmp/ccCZxmp1.o: In function __static_initialization_and_destruction_0': /home/cameron/src/xml-unix/progs/grep/regex_match_example.cpp:31: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, allocator<char> >::reg_expression(char const *, unsigned int, allocator<char> const &)' /home/cameron/src/xml-unix/progs/grep/regex_match_example.cpp:31: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, allocator<char> >::~reg_expression(void)' /tmp/ccCZxmp1.o: In function `basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> >::assign(char const *, unsigned int)': /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::_priv_match_data<char const *, allocator<char> >::gnu.linkonce.t.m_free(void)+0x20): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::allocator(void) const' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::_priv_match_data<char const *, allocator<char> >::gnu.linkonce.t.m_free(void)+0xbe): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::allocator(void) const' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::_priv_match_data<char const *, allocator<char> >::gnu.linkonce.t.(boost::re_detail::match_results_base<char const *, allocator<char> > const &)+0x26): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::allocator(void) const' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::_priv_match_data<char const *, allocator<char> >::gnu.linkonce.t.(boost::re_detail::match_results_base<char const *, allocator<char> > const &)+0x6d): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::allocator(void) const' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::_priv_match_data<char const *, allocator<char> >::gnu.linkonce.t.(boost::re_detail::match_results_base<char const *, allocator<char> > const &)+0xb2): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::allocator(void) const' /tmp/ccCZxmp1.o(.boost::re_detail::_priv_match_data<char const *, allocator<char> >::gnu.linkonce.t.set_accumulator_size(unsigned int)+0x37):/usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h: more undefined references to `boost::re_detail::match_results_base<char const *, allocator<char> >::allocator(void) const' follow /tmp/ccCZxmp1.o: In function `basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> >::assign(char const *, unsigned int)': /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::match_results_base<char const *, allocator<char> >::gnu.linkonce.t.set_second(char const *)+0x13): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::cow(void)' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.gnu.linkonce.t.__as__Q35boost9re_detailt18match_results_base2ZPCcZt9allocator1ZcRCQ35boost9re_detailt18match_results_base2ZPCcZt9allocator1Zc+0x19): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::m_free(void)' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::re_detail::match_results_base<char const *, allocator<char> >::gnu.linkonce.t.set_second(char const *, unsigned int, bool)+0x1a): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::cow(void)' /tmp/ccCZxmp1.o: In function `main': /home/cameron/src/xml-unix/progs/grep/regex_match_example.cpp:89: undefined reference to `boost::c_regex_traits<char>::transform(basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> > &, basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> > const &)' /home/cameron/src/xml-unix/progs/grep/regex_match_example.cpp:99: undefined reference to `boost::c_regex_traits<char>::transform_primary(basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> > &, basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> > const &)' /tmp/ccCZxmp1.o: In function `basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> >::assign(char const *, unsigned int)': /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.bool boost::re_detail::gnu.linkonce.t.query_match_aux<char const *, allocator<char>, char, boost::regex_traits<char>, allocator<char> >(char const *, char const *, boost::match_results<char const *, allocator<char> > &, boost::reg_expression<char, boost::regex_traits<char>, allocator<char> > const &, unsigned int, boost::re_detail::_priv_match_data<char const *, allocator<char> > &, char const * *)+0x77): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::set_first(char const *)' /tmp/ccCZxmp1.o: In function `main': /home/cameron/src/xml-unix/progs/grep/regex_match_example.cpp:95: undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::set_first(char const *, unsigned int)' /tmp/ccCZxmp1.o: In function `basic_string<char, string_char_traits<char>, __default_alloc_template<true, 0> >::assign(char const *, unsigned int)': /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.bool boost::gnu.linkonce.t.regex_match<char const *, allocator<char>, char, boost::regex_traits<char>, allocator<char> >(char const *, char const *, boost::match_results<char const *, allocator<char> > &, boost::reg_expression<char, boost::regex_traits<char>, allocator<char> > const &, unsigned int)+0x34): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::set_size(unsigned int, char const *, char const *)' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.gnu.linkonce.t._._Q35boost9re_detailt18match_results_base2ZPCcZt9allocator1Zc+0x13): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::m_free(void)' /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3/std/bastring.h(.boost::match_results<char const *, allocator<char> >::gnu.linkonce.t.(allocator<char> const &)+0x14): undefined reference to `boost::re_detail::match_results_base<char const *, allocator<char> >::match_results_base(allocator<char> const &)' collect2: ld returned 1 exit status make: *** [regex_match_example] Error 1 (Sorry for the messiness, I can't get Mozilla not to wrap those error lines.) Anyone know what is going on here (a template instantiation problem perhaps)? Thanks, Cameron -- Cameron McCormack // clm(a)csse.monash.edu.au // http://www.csse.monash.edu.au/~clm/ // icq 26955922

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Q: Graphs. Sorting edges. Possible? How to?
by stas_fomin 07 Nov '02

07 Nov '02

Hello. I a newbie in BGL and I rewrite my LEDA code now... I have to sort (order) edges according to some functor. For example (simplified): typedef adjacency_list<vecS, vecS, bidirectionalS> MyGraph; typedef graph_traits < MyGraph >::edge_descriptor MyGraphEdge; typedef graph_traits < MyGraph >::edge_iterator MyEdgeIter; class MyCompareEdges{ public: bool operator()(MyGraphEdge e1, MyGraphEdge e2) const { return true; } }; .... { MyGraph Gr(10); MyEdgeIter ei_beg, ei_end; MyCompareEdges comp; tie(ei_beg, ei_end) = edges(Gr); std::sort(ei_beg, ei_end, comp); //Error C2676 } And I have error C2676 (below the message...). Questions: 1. Is it possible to sort edges in the graph? 2. How to... Thanks all in advance... Stas Fomin. P.S. vecS, setS, listS for edge container... - C2676. ------------------------------ d:\projects\lib\cpp_libs\libboost\boost\iterator_adaptors.hpp(264) : error C2676: binary '+=' : 'class std::list<struct boost::list_edge<unsigned int,struct boost::no_property>,class std::allocator<struct boost::list_edge<unsigned int,struct boost:: no_property> > >::iterator' does not define this operator or a conversion to a type acceptable to the predefined operator d:\projects\lib\cpp_libs\libboost\boost\iterator_adaptors.hpp (911) : see reference to function template instantiation 'void __thiscall boost::default_iterator_policies::advance(struct boost::iterator_adaptor<class std::list<struct boost::lis t_edge<unsigned int,struct boost::no_property>,class std::allocator<struct boost::list_edge<unsigned int,struct boost::no_property> > >::iterator,struct boost::detail::undirected_edge_iter_policies,class boost::detail::edge_desc_impl<struct boost::b idirectional_tag,unsigned int>,class boost::detail::edge_desc_impl<struct boost::bidirectional_tag,unsigned int>,class boost::detail::edge_desc_impl<struct boost::bidirectional_tag,unsigned int> *,struct boost::multi_pass_input_iterator_tag,int> &,i nt)' being compiled Error executing cl.exe.

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[Regex] Case insensitive pb
by f_mayot 07 Nov '02

07 Nov '02

Hi, Maybe a stupid question but I didn't manage to make my regular expression objects case insensitive. What should I do insted of this : boost::regex* pRegExp = new boost::wregex(sRegExp); ? Thanks. Fred

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Can't use adjacency_list AND adjacency_matrix in same program
by loopylozzysdad 07 Nov '02

07 Nov '02

Hi, It seems to me that you can't use adjacency_list AND adjacency_matrix in the same program. When I had both the relevant inludes in the program I got duplicate definition errors from the linker. Is this by design, or a bug? Cheers - Richard Howells (loopylozzydad at yahoo dot com)

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RE: [Boost-Users] shared_ptr capabilities
by Mark Storer 07 Nov '02

07 Nov '02

>I don't believe the above statement will affect me, >but I just want to be sure Correct. A language-level array is not an STL container. There IS a shared_ptr-like template called shared_array that calls "delete []" instead of "delete". Had to look that one up. It doesn't get used much. std::vector is a superior choice (in every situation I can think of). An STL container of shared_ptr's is just fine. Just don't create a circular reference. --Mark Storer Software Engineer Cardiff Software #include <disclaimer> typedef std::disclaimer<Cardiff> Discard; -----Original Message----- From: Collin Peters [mailto:yg-boost-users@m.gmane.org] Sent: Wednesday, November 06, 2002 1:04 PM To: boost-users(a)yahoogroups.com Subject: [Boost-Users] shared_ptr capabilities http://www.boost.org/libs/smart_ptr/shared_ptr.htm states that: "Normally, a shared_ptr cannot correctly hold a pointer to a dynamically allocated array. See shared_array for that usage." What I hope to use shared_ptr for, is to store pointers to a class in a vector, and that class will also have a vector that stores pointers via shared_ptr. example: class Foo { int a; } class one { int var1; int var2; std::vector<Foo> foo_vector; } class two { std::vector<one> one_vector; } I don't believe the above statement will affect me, but I just want to be sure Collin Peters Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

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shared_ptr capabilities
by Collin Peters 07 Nov '02

07 Nov '02

http://www.boost.org/libs/smart_ptr/shared_ptr.htm states that: "Normally, a shared_ptr cannot correctly hold a pointer to a dynamically allocated array. See shared_array for that usage." What I hope to use shared_ptr for, is to store pointers to a class in a vector, and that class will also have a vector that stores pointers via shared_ptr. example: class Foo { int a; } class one { int var1; int var2; std::vector<Foo> foo_vector; } class two { std::vector<one> one_vector; } I don't believe the above statement will affect me, but I just want to be sure Collin Peters

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Q: Problems building boost.python under cygwin
by "Schnörr, Claudius Dr." 06 Nov '02

06 Nov '02

Hello, I run into problems building boost under cygwin. It seems to be merely a matter of a wrong configuration or wrong scripts. After running 'bjam -sTOOLS=gcc -n > build.com' in boost/libs/python/build in order to get hands on the statements being executed by bjam, there had to be made a lot of textual replacements to get the statements in build.com run: Just to mention some: - replace '-isystem ' by '-I' - remove '-I""' - change shared library-names from *.so to *.dll - insert '-L <path_to_libpython2.2.dll> -lpython2.2' where shared libs are created In boost/libs/python/test, going the same way, there have in addition this changes to be made: - LD_LIBRARY_PATH=... --> PATH=$PATH:..., because cygwin uses PATH to look for .dlls My question: I think there have to be made more configurations than I did to create the boost.python-stuff under cygwin. Where have they to be done, and what? (I already configured environment variables like GCC_ROOT_DIRECTORY, GXX, PYTHON_ROOT, ...etc...) Any suggestions are welcome! Please send a copy of your answer to schnoerr(a)mailzone.com Thank you in advance, Claudius --------------------------------------------------------- This Mail has been checked for Viruses Attention: Encrypted mails can NOT be checked! ** Diese Mail wurde auf Viren geprueft Hinweis: Verschluesselte mails koennen NICHT auf Viren geprueft werden! ---------------------------------------------------------

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RE: [Boost-Users] set thread priority
by Mark Storer 06 Nov '02

06 Nov '02

I'd think you could get away with something like a set range, like 0 to 1000, and then map those values into whatever system is present. You could even use floating point values, 0.0 to 1.0, though people might look at you cross-eyed, at least until they got used to the idea. Then it's just a matter of mapping those ranges to whatever OS settings are present. You just state up front a couple caveats: Given two threads, A (higher priority) and B (lower priority), you only guarentee that A won't be given a lower underlying system priority than B. This would save you quite a bit of grief... particularly when someone wants threads with priority 1.0, 0.99 and 0.98. The thread with 0.98 might not run slower than the one with a 1.0 priority, but it certainly won't be faster. SOUNDS simple enough. At least to someone whose sum total multi-threading experience is a toy java applet and a dozen lines of boost::thread code. ;) --Mark Storer Software Engineer Cardiff Software #include <disclaimer> typedef std::disclaimer<Cardiff> Discard;

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