March 2014 - Boost-users - lists.preview.boost.org

first time user
by Pubudu Bandara 07 Mar '14

07 Mar '14

I have downloaded boost and did build the boost libraries according to http://www.boost.org/doc/libs/1_55_0/more/getting_started/windows.html and configured VS2008 as well. but when i'm trying to use #include <boost/thread.hpp> it gives following set of compilation errors. 1>C:\Program Files\boost_1_55_0\boost/smart_ptr/detail/sp_counted_base_w32.hpp(74) : error C3861: '_InterlockedIncrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/smart_ptr/detail/sp_counted_base_w32.hpp(93) : error C3861: '_InterlockedCompareExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/smart_ptr/detail/sp_counted_base_w32.hpp(101) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/smart_ptr/detail/sp_counted_base_w32.hpp(110) : error C3861: '_InterlockedIncrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/smart_ptr/detail/sp_counted_base_w32.hpp(115) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/smart_ptr/detail/spinlock_w32.hpp(62) : error C3861: '_InterlockedExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/thread_data.hpp(130) : error C3861: '_InterlockedIncrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/thread_data.hpp(135) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(52) : error C3861: '_InterlockedExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(100) : error C3861: '_InterlockedCompareExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(118) : error C3861: '_InterlockedCompareExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(147) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(210) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(225) : error C3861: '_InterlockedExchangeAdd': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/basic_timed_mutex.hpp(248) : error C3861: '_InterlockedCompareExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/condition_variable.hpp(68) : error C3861: '_InterlockedIncrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/condition_variable.hpp(73) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/condition_variable.hpp(110) : error C3861: '_InterlockedIncrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/condition_variable.hpp(115) : error C3861: '_InterlockedDecrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/once.hpp(183) : error C3861: '_InterlockedCompareExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/once.hpp(202) : error C3861: '_InterlockedIncrement': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/once.hpp(205) : error C3861: '_InterlockedExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/once.hpp(218) : error C3861: '_InterlockedExchange': identifier not found 1>C:\Program Files\boost_1_55_0\boost/thread/win32/once.hpp(741) : error C3861: '_InterlockedIncrement': identifier not found help me on this issue. -- Pubudu Bandara Undergraduate Department of Computer Science and Engineering University of Moratuwa

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boost::tribool "if ( someTriboolVar == indeterminate )" semantics is confusing
by Peter Hackett 06 Mar '14

06 Mar '14

I started using tribool recently. I just discovered that I was using it incorrectly. I had code that did something like: tribool triboolVar1 = indeterminate; if ( triboolVar1 == indeterminate ) { cout << "triboolVar1 is indeterminate" << endl; } else { cout << "triboolVar1 is NOT indeterminate" << endl; } I was expecting this to print "triboolVar1 is indeterminate". However it prints "triboolVar1 is NOT indeterminate". I ended up looking through "include/boost/logic/tribool.hpp" and after a bit of head scratching, I think I understand why this doesn't do what I expect: The above "if" line is "really" (pseudo-code): if ( operator==(tribool triboolVar1,tribool indeterminate) ) { where operator== returns a tribool, and (I think) tribool::operator safe_bool() const { return value == true_value? &dummy::nonnull : 0; } is used to turn the tribool into a bool. And give that operator== says: ... if (indeterminate(x) || indeterminate(y)) return indeterminate; ... Then clearly no matter what the value of triboolVar1 is, the "if" code will be false. I haven't had any schooling in what (I'm assuming) might be called something like "Multi-Level-Logic", but: Shouldn't an "indeterminate" value equal another "indeterminate" value? -- Peter Hackett Member of Technical Staff IC Manage http://icmanage.com phone (408) 358-8191 x6012

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Boost Serialization Difference in Archive Versions
by Lynn Gilbert 06 Mar '14

06 Mar '14

Hope everyone is doing well. I'm having an issue with boost serialization. I have serialized a file on my ODroid U2 using Boost v1.53. I'm trying to deserialize the file on a computer which only has Boost v1.46; however, line 7 below causes the following error: CMyClass Exception thrown: unsupported version Code: 1 void CMyClass::enableDeserialize(std::string file, bool binary) { 2 filename = file ; 3 isBinary = binary ; 4 ifs = new std::ifstream(file.c_str()) ; 5 try { 6 if (isBinary) { 7 CMyClass::ib = new boost::archive::binary_iarchive(*ifs) ; 8 } else { 9 CMyClass::ia = new boost::archive::text_iarchive(*ifs) ; 10 } 11 } catch (boost::archive::archive_exception e) { 12 std::cout << "CMyClass Exception thrown: " << e.what() << std::endl ; 13 } 14 } The boost archive version for v1.53 (version I serialized with) is 10 and the boost archive version for v1.46 (the version I'm trying to deserialize with) is 9. Boost documentation hasn't helped me determine the differences between the 2 archive versions. I've only been able to find answers for how to deserialize an older archive. Please note, I don't do anything with BOOST_CLASS_VERSION. CMyClass hasn't changed at all. I can't imagine boost can handle the deserialization of a newer archive so I don't feel like I'm missing that answer. What I need to know if if there is a way I can serialize in v1.53 based on boost archive version 9 instead of 10. I'm hoping the new version of boost will still allow me to serialize at an older version. Then, I should be able to deserialize the archive just fine. Any advice you could provide is much appreciated! -- Lynn Coddington Gilbert Partner, Robotic Paradigm Systems www.roboticparadigmsystems.com www.facebook.com/RoboticParadigmSystems lynn(a)roboticparadigmsystems.com 678-428-0935

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\boost\cstdint.hpp(129) : error C2059: syntax error : '::'
by Uthpal Urubail 05 Mar '14

05 Mar '14

I am trying use boost in my application. I am getting compiler error, if I try to include headers after one of the application include file where uint64_t is defined. #if defined(OS_WIN) && !defined(uint64_t) #define uint64_t unsigned __int64 #endif Error: Can some one help me find the better solution to resolve these type of issues? Regards, UJ

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CMake and Boost
by Koteswara Rao Ruvva 05 Mar '14

05 Mar '14

Hello All, I built boost libraries with the option build-type=complete and created libraries for various options, like gcc54-mt, gcc45-mt-d, gcc45-mt-s, gcc-54mt-sd etc. I have similar ones for intel toolchain too. Now, how do I force CMake to link to the correct library file out of many versions? Do I have to specify the full library name? Or can I specify the build type, like debug, multi-threading etc and leave the CMake to choose the right file to link? Is there such an option? I'm building on Linux under gcc and intel compilers and keeping both gcc and intel library files in one folder. Thank you all for being there to help the community. --Kotesh

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relocation R_X86_64_32 against
by Koteswara Rao Ruvva 04 Mar '14

04 Mar '14

Hello All, I'm a newbie to this mailing list. I am trying to build static boost libraries and link to my libraries. I used ./bjam debug link=static cxxflags="-std=c++0x" stage to build the boost libraries. When I build my libraries (shared or static) with linking to boost libraries, I get the following error: libboost_regex.a(instances.o): relocation R_X86_64_32 against `.bss' can not be used when making a shared object; recompile with -fPIC libboost_regex.a: could not read symbols: Bad value Then I tried adding -fPIC while building my boost libraries. Didn't help. Any suggestions. Thank you Kotesh

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Boost qi parser
by Uthpal Urubail 04 Mar '14

04 Mar '14

{ name = "new" sub_name = "SUBTITLE" values = { 1, 2, 3; } input_values = { 1, 2, 3; 5, 5, 6 10, 12, 3} type = input intval = 100 } Can some one help me to write the parser for the above format? I am trying something like below and this doesn’t seem to work for me. template <typename Iterator> struct keys_and_values : qi::grammar<Iterator, mapDef()> { keys_and_values() : keys_and_values::base_type(query) { using namespace qi; query = '{' >> *lit(' ') >> pair >> *(lit(' ') >> *lit(' ') >> pair) >> *lit(' ') >> '}'; pair = key >> -(*lit(' ') >> "=" >> *lit(' ') >> value); key = +char_("a-zA-Z0-9_") ; value = +char_("a-zA-Z0-9") | lexeme[('{' >> +char_("\"@+*.( , ) $ a-zA-Z0-9_ -") >> '}')] | lexeme[('"' >> +char_("\"@+*.( , ) $ a-zA-Z0-9_ -") >> '"')]; } qi::rule<Iterator, mapDef()> query; qi::rule<Iterator, std::pair<std::string, std::string>()> pair; qi::rule<Iterator, std::string()> key, value; }; Any help would be highly appriciated. Regards, UJ

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[Boost.Log] logging only in a debug build
by Sean Farrow 03 Mar '14

03 Mar '14

Hi, Is there a way with Boost.Log to have logging code emitted in a debug build but completely removed for release. The only way I can come up with is to have #if defs and #endif's scattered throughout the code. Has anyone come up with a better way? Any help appreciated. Kind Regards Sean.

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[BGL] Shared nodes on path
by Sensei 03 Mar '14

03 Mar '14

Dear all, I have a simple question about the most efficient way of finding shared nodes between a path and a graph. Let me be more explicit. I have an oriented graph G, and a very simple graph P, which is actually a simple oriented path (n0 -> n1 -> ... -> nK). I need to find *all* the possible shared paths between P and G with the same length as P. For instance, being P = n1 -> n2 -> n3 -> n4 -> n5 -> n6 we may find that the G and P share only two sub-paths n1 -> n2 -> n3 n5 -> n6 I'd like to find all sub-graphs that connect the two paths, for instance having n1 -> n2 -> n3 -> n10 -> n5 -> n6 n1 -> n2 -> n3 -> n42 -> n5 -> n6 with the constraint that the solution must be a path with the same length as P, therefore a solution as these n1 -> n2 -> n3 -> n9 -> n8 -> n5 -> n6 n1 -> n2 -> n3 -> n5 -> n6 would not be acceptable. I know I can do it manually, but I think a BGL-aware solution is quite better that a manual search :) Thanks & Cheers!

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