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Question about boost.build and automatic selection of toolsets
by Mauricio Carneiro 22 Sep '13

22 Sep '13

I am using boost-build in my project (very happy with the outcome) but I would like to have the toolset selected automatically based on the operating system. Currently I am running successfully from the command line by manually setting the toolset when I am running it from macos and linux accordingly, but I feel like the Jamroot file should be able to figure that out for me. Any ideas? I made a more descriptive post on stack overflow, to share the knowledge once we figure this one out. http://stackoverflow.com/questions/18939911/choosing-compiler-options-based… Thank you, Mauricio Carneiro, Ph.D. http://www.broadinstitute.org/~carneiro/

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units
by Robert Ramey 22 Sep '13

22 Sep '13

I have a program in which there is the notion of consumption rate such as m^3/sec, gallons/hour, etc. I have consumption_rate unit defined in terms of si units. I read in a quanity in gallons/hour and so far so good. If I display the quantity it is displayed as m^3/sec. This displays the "compound units" as expected - very cool. All this is OK as far as it goes. When I try to display the quantity as gallons/hour again I have a whole host of problems. The attached test fill illustrates the issues. The only way I've been able to do is is by making a complete end run around the units system itself - sort of self defeating. I would appreciate insight anyone might be able to offer into this issue. Robert Ramey begin 666 test_units.cpp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a)I.PT*(" @('-T9#HZ8V]U=" \/"!R("H@9V%L;&]N<R O(&AO=7(@ M/#P@(B M(&9I;F%L;'DA('1H92!C;W)R96-T(')E<W5L="$B(#P\('-T9#HZ M96YD;#L-"@T*(" @('-T9#HZ8V]U=" \/"!S=&0Z.F5N9&P[#0H@(" @#0H@ M(" @<75A;G1I='D\<VDZ.F%R96$^(" @(" @02@Q+C4J<VDZ.FUE=&5R*F-G M<SHZ8V5N=&EM971E<BD[#0H@(" @#0H@(" @<W1D.CIC;W5T(#P\(#$N-2IS M:3HZ;65T97(J8V=S.CIC96YT:6UE=&5R(#P\('-T9#HZ96YD; T*(" @(" @ M(" @(" @(" \/"!!(#P\('-T9#HZ96YD; T*(" @(" @(" @(" @(" \/"!S A=&0Z.F5N9&P[#0H-"B @("!R971U<FX@,#L-"GT-"@T* ` end

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Boost::Bind Problem
by vishal rawate 22 Sep '13

22 Sep '13

Hello, I am trying to use Boost::Bind to bind my function but I am getting an error as Bind cannot diffrentiate between the constructors even though they have diffrent function signatures. TestBind(boost::bind((&Test::process), &t1, _1)); I would highly appreciate any help. Thanks //Boost Includes #include <boost/function.hpp> #include <boost/bind.hpp> #include <boost/enable_shared_from_this.hpp> namespace test{ struct A{ public: int one; int two; }; struct B{ public: short three; short four; }; typedef boost::shared_ptr<A> t_boostInt; typedef boost::shared_ptr<B> t_boostShort; class TestBind{ public: typedef boost::function< int (t_boostInt)> t_ProcessFunctionInt; public: ///< call back process function for short typedef boost::function< short (t_boostShort)> t_ProcessFunctionShort; public: TestBind( t_ProcessFunctionInt func){} TestBind(t_ProcessFunctionShort func){} }; class Test { public: Test(){} ~Test(); public: int process(t_boostInt msg) { return 1;} }; int main(int argc, char * argv[]) { try { Test t1; TestBind(boost::bind((&Test::process), &t1, _1)); } catch (std::exception & exception) { std::cout << exception.what() << std::endl; } return 0; } }

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Newbie boost::spirit rule semantic action question
by LeMay.Steve 21 Sep '13

21 Sep '13

Brand-newbie boost::spirit::qi question. MSVS2012, boost 1.54 I have a response from a serial device that provides with 0 or more "profiles" in a given character format. I want to capture the number of profile responses in the list (semantic action) as well as have the value into the final result (std::vector<std::string>). How do I properly express this? Given the input.... (in this case, there are zero profiles returned) *ARSS:0<CR><LF>OK<CR><LF> Expect a vector of strings containing "*ARSS" "0" "OK" This sub-rule fails to return... (Not failing to parse) boost::spirit::qi::rule<Iter, std::vector<std::string>(), boost::spirit::qi::locals<int, std::string>> service_search_list; service_search_list %= // %= operator is necessary for attribute propagation when using symantic attributes (anything in [ ]) string ("*ARSS") >> colon >> // Initial response +digit [qi::_a = qi::_1] >> crlf >> // Number of discovered devices - save in local qi::_a qi::omit [ok [qi::_b = qi::_1]] >> // Match but don't emit the "OK" here - save it for the end qi::repeat (qi::_a) // Repeat for each discovered device [ crlf >> ( qi::hold [profile1] | qi::hold [profile2] ... ) ] >> qi::attr(qi::_b); // Emit the "OK" here at the end of the list Using qi::int_[qi::_a = qi::_1] provides and empty string "" in the result and not "0". If I omit the numeric input from the result... qi::omit [qi::int_[qi::_a = qi::_1]] the parse will succeed but number of items in the response list is lost in the final result (omitted as requested). Any suggestion is appreciated, I'm stumped.

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Re: [Boost-users] Boost::Bind Problem
by Sergey Zhuravlev 21 Sep '13

21 Sep '13

Try use TestBind f(boost::bind(boost::type<TestBind::t_ProcessFunctionInt>(), (&Test::process), &t1, _1)); for ambiguity. Either ...boost::bind<TestBind::t_ProcessFunctionInt>..., but less portable.

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build errors with 1.54 on linux
by Dev Guy 21 Sep '13

21 Sep '13

Hello All, I am building boost 1.54 on a linux box and I am seeing the following error messages after the build: gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/instantiate_re2c_lexer_str.o gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/token_ids.o gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/wave_config_constant.o common.mkdir bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/cpplexer common.mkdir bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/cpplexer/re2clex gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/cpplexer/re2clex/aq.o gcc.compile.c++ bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/cpplexer/re2clex/cpp_re.o gcc.archive bin.v2/libs/wave/build/gcc-4.7/release/link-static/threading-multi/libboost_wave.a common.copy /home/yadav/dev/cpp/boost_1.54/lib/libboost_wave.a ...failed updating 29 targets... ...updated 10797 targets... How can I know what these 29 targets have failed and how to go about getting a clean build? Thanks!

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[units] Convert from Degree Minutes to Degrees
by Ryan 21 Sep '13

21 Sep '13

Angles have their own system that define both radians and degrees. I would like to create the necessary type for minutes (this is 1/60 of a degree). My first thought was to create a scale unit with degrees as the base type. I couldn't determine how to enter the scale of 1/60. The other option is to define a new base unit. I would think using the degrees base unit would be a good reference, but it uses an "INTERNAL ONLY" macro call "BOOST_UNITS_DEFINE_BASE_UNIT_WITH_CONVERSIONS". What should I use to create a unit type that will convert from degree minutes to just degrees? Ryan

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tcp::socket::is_open() is true after socket is closed
by niXman 20 Sep '13

20 Sep '13

Hi, In the following simple code: tcp::socket socket(ios); ... const bool iso1 = socket.is_open(); socket.close(); const bool iso2 = socket.is_open(); I get: iso1 == iso2 == true Why? Thanks. -- Regards, niXman ___________________________________________________ Dual-target(32 & 64-bit) MinGW compilers for 32 and 64-bit Windows: http://sourceforge.net/projects/mingwbuilds/ ___________________________________________________ Another online IDE: http://liveworkspace.org/

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Getting ASIO application to link (undefined reference to `boost::system::generic_category())
by Ulf Samuelsson 20 Sep '13

20 Sep '13

Hi, Trying to get an ASIO example (udp_echo_client) to build on an Ubuntu 12.04 machine. It looks like both 1.46 and 1.48 can be installed. (I have installed 1.48). The libboost*.so all are linked vs 1.48, and the /usr/include/boost/version.hpp contains #define BOOST_LIB_VERSION "1_48" so I think that there should not be a version mismatch, I can build some really simple examples but, as soon as I add "asio" with the statement below, the build fails. using boost::asio::ip::udp; Fiirst problem is that `boost::system::generic_category()' is missing. When I grep the libboost libraries, they are only found in "libboost_[file]system[-mt].so" but these files are included in the link. Searching on Internet, also tells me to link with those libraries, which is not a help. Tried with "-mt" version as well. Added #include <boost/system/error_code.hpp> #include <boost/system/linux_error.hpp> without any change. What is going on? Running out of ideas... Thanks for any advice. /Ulf Samuelsson ---------------------------------------------------------- g++ -I/usr/include -Iinclude -L/usr/lib -lboost_filesystem -lboost_system -lpthread -std=c++0x -o udp_echo_client udp_echo_client.cpp /tmp/ccu20iRA.o: In function `__static_initialization_and_destruction_0(int, int)': udp_echo_client.cpp:(.text+0x58d): undefined reference to `boost::system::generic_category()' udp_echo_client.cpp:(.text+0x597): undefined reference to `boost::system::generic_category()' udp_echo_client.cpp:(.text+0x5a1): undefined reference to `boost::system::system_category()' /tmp/ccu20iRA.o: In function `boost::system::error_code::error_code()': udp_echo_client.cpp:(.text._ZN5boost6system10error_codeC2Ev[_ZN5boost6system10error_codeC5Ev]+0x10): undefined reference to `boost::system::system_category()' /tmp/ccu20iRA.o: In function `boost::asio::error::get_system_category()': udp_echo_client.cpp:(.text._ZN5boost4asio5error19get_system_categoryEv[boost::asio::error::get_system_category()]+0x7): undefined reference to `boost::system::system_category()' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_tss_ptr_create(unsigned int&)': udp_echo_client.cpp:(.text._ZN5boost4asio6detail20posix_tss_ptr_createERj[boost::asio::detail::posix_tss_ptr_create(unsigned int&)]+0x15): undefined reference to `pthread_key_create' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_thread::~posix_thread()': udp_echo_client.cpp:(.text._ZN5boost4asio6detail12posix_threadD2Ev[_ZN5boost4asio6detail12posix_threadD5Ev]+0x1d): undefined reference to `pthread_detach' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_thread::join()': udp_echo_client.cpp:(.text._ZN5boost4asio6detail12posix_thread4joinEv[boost::asio::detail::posix_thread::join()]+0x25): undefined reference to `pthread_join' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_thread::start_thread(boost::asio::detail::posix_thread::func_base*)': udp_echo_client.cpp:(.text._ZN5boost4asio6detail12posix_thread12start_threadEPNS2_9func_baseE[boost::asio::detail::posix_thread::start_thread(boost::asio::detail::posix_thread::func_base*)]+0x24): undefined reference to `pthread_create' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context>::~posix_tss_ptr()': udp_echo_client.cpp:(.text._ZN5boost4asio6detail13posix_tss_ptrINS1_10call_stackINS1_15task_io_serviceENS4_11thread_infoEE7contextEED2Ev[_ZN5boost4asio6detail13posix_tss_ptrINS1_10call_stackINS1_15task_io_serviceENS4_11thread_infoEE7contextEED5Ev]+0xf): undefined reference to `pthread_key_delete' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context>::operator boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context*() const': udp_echo_client.cpp:(.text._ZNK5boost4asio6detail13posix_tss_ptrINS1_10call_stackINS1_15task_io_serviceENS4_11thread_infoEE7contextEEcvPS7_Ev[boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context>::operator boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context*() const]+0xf): undefined reference to `pthread_getspecific' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::strand_service::strand_impl, unsigned char>::context>::~posix_tss_ptr()': udp_echo_client.cpp:(.text._ZN5boost4asio6detail13posix_tss_ptrINS1_10call_stackINS1_14strand_service11strand_implEhE7contextEED2Ev[_ZN5boost4asio6detail13posix_tss_ptrINS1_10call_stackINS1_14strand_service11strand_implEhE7contextEED5Ev]+0xf): undefined reference to `pthread_key_delete' /tmp/ccu20iRA.o: In function `boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context>::operator=(boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context*)': udp_echo_client.cpp:(.text._ZN5boost4asio6detail13posix_tss_ptrINS1_10call_stackINS1_15task_io_serviceENS4_11thread_infoEE7contextEEaSEPS7_[boost::asio::detail::posix_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context>::operator=(boost::asio::detail::call_stack<boost::asio::detail::task_io_service, boost::asio::detail::task_io_service::thread_info>::context*)]+0x16): undefined reference to `pthread_setspecific' collect2: ld returnerade avslutningsstatus 1 make: *** [udp_echo_client] Fel 1 -------------------------------------------------------------- Makefile: ------------------------------------------------------ # Using 1.48.0 in Ubuntu 12.04 BOOST=/usr INCLUDES += -I$(BOOST)/include -Iinclude LIBS +=-L$(BOOST)/lib -lboost_filesystem -lboost_system -lpthread CFLAGS=$(INCLUDES) $(LIBS) -std=c++0x all: udp_echo_client udp_echo_client: udp_echo_client.cpp g++ $(CFLAGS) -o $@ udp_echo_client.cpp clean: rm -f udp_echo_client rm -f *~ -------------------------------------------------------- Code from example: -------------------------------------------------------- // // blocking_udp_echo_client.cpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #include <cstdlib> #include <cstring> #include <iostream> #include <boost/asio.hpp> using boost::asio::ip::udp; enum { max_length = 1024 }; int main(int argc, char* argv[]) { try { if (argc != 3) { std::cerr << "Usage: blocking_udp_echo_client <host> <port>\n"; return 1; } boost::asio::io_service io_service; udp::socket s(io_service, udp::endpoint(udp::v4(), 0)); udp::resolver resolver(io_service); udp::endpoint endpoint = *resolver.resolve({udp::v4(), argv[1], argv[2]}); std::cout << "Enter message: "; char request[max_length]; std::cin.getline(request, max_length); size_t request_length = std::strlen(request); s.send_to(boost::asio::buffer(request, request_length), endpoint); char reply[max_length]; udp::endpoint sender_endpoint; size_t reply_length = s.receive_from( boost::asio::buffer(reply, max_length), sender_endpoint); std::cout << "Reply is: "; std::cout.write(reply, reply_length); std::cout << "\n"; } catch (std::exception& e) { std::cerr << "Exception: " << e.what() << "\n"; } return 0; }

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Re: [Boost-users] cross-compilation x86_64-w64-ming32: undefined reference to `InterlockedIncrement'
by Frédéric Bron 19 Sep '13

19 Sep '13

> Solved this by adding define=BOOST_USE_WINDOWS_H and that forces the include > of windows.h and as such the different types of InterlockedIncrement. I tried that and it worked until I realized that including windows.h causes me lots of troubles in another library (wxWidgets) so that I cannot use this solution. What is in windows.h that should be copied in interlocked.hpp? I start to be desperate to build a 64 bit version of my program with mingw-w64... also, it is difficult because I have absolutly no idea of what these interlocked... mean. Regards, Frédéric

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