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[iostreams][zip]
by Andy Schweitzer 18 May '09

18 May '09

Can someone provide a command line that builds iostreams with zlib and bz2 support? I tried the following but my program still fails to link to libboost_zlib. I did find a boost_zlib-vc90-mt-1_38.dll and a boost_zlib-vc90-mt-1_38.lib, but no libboost_zlib-vc90-mt-gd-1_38.lib bjam toolset=msvc-9.0 -sHAS_ZLIB=1 -sHAS_BZIP2=1 -sNO_COMPRESSION=0 -sNO_BZIP2=0 -s -sNO_ZLIB=0 -sZLIB_INCLUDE=C:/nan/compression/zlib/zlib123-dll/include -sZLIB_LIBPATH=C:/nan/compression/zlib/zlib123-dll/lib -sZLIB_SOURCE=C:/nan/compression/zlib/zlib-1.2.3 -sBZIP2_INCLUDE=C:/nan/compression/bz2/bzip2-1.0.5 -sBZIP2_LIBPATH=C:/nan/compression/bz2/bzip2-1.0.5 -sBZIP2_SOURCE=C:/nan/compression/bz2/bzip2-1.0.5 Thanks Andy

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extending Jam
by gtsml owevwr 18 May '09

18 May '09

Hi, I'm trying to build boost on the iphone OS 3.0 and Jam is telling me: error: "iphone-3.0" is not a known value of feature <macosx-version> error: legal values: "10.6" "10.5" "10.4" "10.3" "10.2" "10.1" "iphone-2.3" "iphonesim-2.3" "iphone-2.2" "iphonesim-2.2" "iphone-2.1" "iphonesim-2.1" "iphone-2.0" "iphonesim-2.0" "iphone-1.x" I'd like to add this OS to Jam, is there a tutorial (or anything helpful) to accomplish such task? Thanks, Frank

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Boost on Eclipse Ganymede 3.4.2
by Matheus Araújo Aguiar 18 May '09

18 May '09

Hello everyone, I'm trying to use boost lib asio in a project on eclipse (running on ubuntu 8.10). So far i'm getting this errors when trying to build the project. '/home/matheus/boost_1_39_0' is where i've unpacked boost lib downloaded from sourceforge.net . I've also set this directory to the include path in eclipse. So, any help? Description Resource Path Location Type /home/matheus/boost_1_39_0/boost/asio/detail/posix_signal_blocker.hpp undefined reference to `pthread_sigmask' Proxy_Server line 48 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_signal_blocker.hpp undefined reference to `pthread_sigmask' Proxy_Server line 55 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_thread.hpp undefined reference to `pthread_detach' Proxy_Server line 69 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_thread.hpp undefined reference to `pthread_join' Proxy_Server line 77 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_tss_ptr.hpp undefined reference to `pthread_getspecific' Proxy_Server line 67 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_tss_ptr.hpp undefined reference to `pthread_key_create' Proxy_Server line 47 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_tss_ptr.hpp undefined reference to `pthread_key_delete' Proxy_Server line 61 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/detail/posix_tss_ptr.hpp undefined reference to `pthread_setspecific' Proxy_Server line 73 C/C++ Problem /home/matheus/boost_1_39_0/boost/asio/error.hpp undefined reference to `boost::system::get_system_category()' Proxy_Server line 218 C/C++ Problem /home/matheus/boost_1_39_0/boost/system/error_code.hpp undefined reference to `boost::system::get_generic_category()' Proxy_Server line 206 C/C++ Problem /home/matheus/boost_1_39_0/boost/system/error_code.hpp undefined reference to `boost::system::get_generic_category()' Proxy_Server line 211 C/C++ Problem /home/matheus/boost_1_39_0/boost/system/error_code.hpp undefined reference to `boost::system::get_generic_category()' Proxy_Server line 212 C/C++ Problem /home/matheus/boost_1_39_0/boost/system/error_code.hpp undefined reference to `boost::system::get_system_category()' Proxy_Server line 205 C/C++ Problem /home/matheus/boost_1_39_0/boost/system/error_code.hpp undefined reference to `boost::system::get_system_category()' Proxy_Server line 213 C/C++ Problem /home/matheus/boost_1_39_0/boost/system/error_code.hpp undefined reference to `boost::system::get_system_category()' Proxy_Server line 312 C/C++ Problem Thanx and best regards, -- Matheus Araújo Aguiar Computer Scientist matheus.pit(a)gmail.com

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*ignore* [interprocess] managed_mapped_file under cygwin
by Bob Walters 18 May '09

18 May '09

Please disregard that request for help, I had forgotten about a 'experimental' version of boost/interprocess/detail/os_file_functions.hpp (with support for offsets in the file locks) from the 1_38 version, which was being inadvertently included by the new 1_39 code, which I naturally upgraded to at the same time I did the OS change. - Bob Walters

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[interprocess] managed_mapped_file under cygwin
by Bob Walters 18 May '09

18 May '09

>From what I've read, cygwin supports mmap, and so I figured there was a chance that boost::interprocess::managed_mapped_file was valid on windows when compiling with cygwin. I've built the boost libraries using cygwin with boost_1_39_0, using a user-config.bjam with: using gcc : cygwin_4.3.2 : /usr/bin/g++-4 : <compileflags>-DBOOST_POSIX_API <compileflags>-DBOOST_POSIX_PATH ; Under cygwin, I have g++ 3.4.4 g++-4 4.3.2 I think you can reproduce this with a source file that just includes <boost/interprocess/managed_mapped_file.hpp> I'm getting the following compile error: g++-4 -DHAS_STDINT_H -I/cygdrive/c/workspaces/cdds_head/stldb_lib -I/cygdrive/c/c++/boost_1_39_0 -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"database.d" -MT"database.d" -o"database.o" "../database.cpp" (I also get this with g++) In file included from C:\C++\boost_1_39_0/boost/interprocess/detail/managed_open_or_create_impl.hpp:17, from C:\C++\boost_1_39_0/boost/interprocess/managed_mapped_file.hpp:20, from C:\workspaces\cdds_head\stldb_lib/stldb/containers/trans_map.h:23, from ../trans_map.h:18, from ../database.h:13, from ../database.cpp:8: C:\C++\boost_1_39_0/boost/interprocess/mapped_region.hpp: In constructor 'boost::interprocess::mapped_region::mapped_region(const MemoryMappable&, boost::interprocess::mode_t, boost::interprocess::offset_t, size_t, const void*)': C:\C++\boost_1_39_0/boost/interprocess/mapped_region.hpp:403: error: request for member 'is_xsi' in 'map_hnd', which is of non-class type 'boost::interprocess::mapping_handle_t' C:\C++\boost_1_39_0/boost/interprocess/mapped_region.hpp:406: error: request for member 'handle' in 'map_hnd', which is of non-class type 'boost::interprocess::mapping_handle_t' The above suggests that in detail/os_file_functions.hpp, mapping_handle_t is being given the windows definition rather than the posix definition, somehow. However, I've also noticed that if I #include <boost/interprocess/windows_shared_memory.hpp>, I do trip the #error caused by !defined(BOOST_INTERPROCESS_WINDOWS), so that proves that it isn't, in which case I don't quite understand where this error is coming from. Any help is appreciated. Thanks, - Bob Walters

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Buffer overrun when building read_graphviz using VC7.1
by Paul De La Musica 18 May '09

18 May '09

Hi, I got two buffer overrun errors building Boost 1.38.0 on MSVC 7.1.3088. One of them occurred while building the library to be used with read_graphviz. Is there a place to download a pre-built libbgl-viz.lib? Paul

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PropertyTree's XML parsers survey
by Tan, Tom (Shanghai) 18 May '09

18 May '09

>From: "Robert Ramey" <ramey(a)rrsd.com> >Subject: Re: [Boost-users] PropertyTree's XML parsers survey >The serialization library has been using the spirit library >for parsing XML for years. This is for both utf-8 and wide characters > >Robert Ramey I just played with the examples demo_xml_load along with boost 1.39. As I mainly use xml as configuration files. I found some features I really like are missing: - often I need to edit the xml file manually with 3rd tools(gedit, kate notepad++ etc) other than the app itself. When saving back with those editors, they may add some BOM bytes(0xFFFE for UTF16LE, 0xFEFF for UTF16BE, 0xefbbbf for utf8) and replace the line-breakers(0x0a, 0x0a0d) with another fashion(e.g 0x0d0a -> 0x0a) the system default. In such cases, I wish boost.serialize would detect and ignore them as the real data the xml carries do NOT change. - I often embed some comment nodes inside the xml to facilitate the manual edit. E.g, enumeration of accepted value some fields. I wish boost.serialize ignores them when parsing, and embbded them when saving(is this possible). - I wish only the hierarchy not the order or nodes matters. Ex. <a> <first = "1st"> <second = "2nd"> </a> Would be equivalent to <a> <second = "2nd"> <first = "1st"> </a> It seems not to be support yet. On the whole, my impression is boost.serialize imposes some restrictions (orders for instance) that make sense to plain text files, but limits the buil-in flexibility that coming with xml.

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Re: [Boost-users] [serialization] xml tag names and exceptions
by Ashley Smith 18 May '09

18 May '09

> AMDG > > Ashley Smith wrote: > >> Hi, I've been using boost for a while now and it's brilliant! :D >> >> Anyway, I'm using serialization in my code and was wondering why I was >> catching an exception where the what() reported "uninitialized >> exception". Eventually I worked it out (After much debugging) that I was >> catching the exception like this: >> >> } catch( std::exception & e ) { >> std::cout << e.what() << std::endl; >> >> I found out that my xml tags could not have namespace qualifiers in them >> (I.e. "blah::abc" would not work) and that it would throw a >> boost::archive::xml_archive_exception. This obviously didn't work with >> an std::exception and defaulted to an uninitialised exception. So my >> question is: am I catching the exceptions in the wrong way? Whats the >> right way? Should I use a more specific boost exception class? >> >> > > Can you catch xml_archive_exception instead of std::exception? > It almost sounds like the exception has been sliced. > > In Christ, > Steven Watanabe > Thanks for replying. Thats strange, it catches the boost::archive::xml_archive_exception, but it is still set as an uninitialized exception. I'm sure this is what is being thrown though. I think the source of the exception is in boost/archive/impl/basic_xml_oarchive.ipp Thanks

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MPL if_ not following true branch
by Cory Nelson 18 May '09

18 May '09

This code doesn't seem to ever follow the true branch of the if_... it's like the eval_if is clobbering it. Can someone tell me what I'm doing wrong (other than not using a map.. this is a reduction of some other code that can't use a map)? #include <iostream> #include <typeinfo> #include <boost/mpl/if.hpp> #include <boost/mpl/eval_if.hpp> #include <boost/mpl/identity.hpp> #include <boost/type_traits/is_same.hpp> #include <boost/static_assert.hpp> template<typename T> struct choose_type { struct int_tag {}; struct float_tag {}; template<typename InvalidT> struct invalid_type_specified { BOOST_STATIC_ASSERT(sizeof(InvalidT) == 0); }; typedef typename boost::mpl::if_< boost::is_same<T, int>, int_tag, typename boost::mpl::eval_if< boost::is_same<T, float>, boost::mpl::identity<float_tag>, invalid_type_specified<T> >::type >::type type; }; int main() { std::cout << typeid(choose_type<int>::type).name() << std::endl; return 0; } -- Cory Nelson

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boost compression
by einav_i2 18 May '09

18 May '09

Hi! Can anyone send an exmaple of a string to string compression (not file) using boost iostreams and gzip? Thanks, Einav -- View this message in context: http://www.nabble.com/boost-compression-tp23482602p23482602.html Sent from the Boost - Users mailing list archive at Nabble.com.

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