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Boost Thread Compile Issue
by Len Za 25 Feb '16

25 Feb '16

When simply including into C++ project and attempting to compile causes the following compile error: Environment: - Visual Studio 2010 Pro (Project Configuration: DLL project) - boost v1.60.0 C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(99): error C2146: syntax error : missing ';' before identifier 'curr' C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(81) : while compiling class template member function 'boost::posix_time::ptime boost::date_time::microsec_clock<time_type>::create_time(boost::date_time::microsec_clock<time_type>::time_converter)' with [ time_type=boost::posix_time::ptime ] C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/thread/thread_time.hpp(22) : see reference to class template instantiation 'boost::date_time::microsec_clock<time_type>' being compiled with [ time_type=boost::posix_time::ptime ] C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(99): error C2065: 'curr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(100): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(100): error C2065: 'curr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(101): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(101): error C2227: left of '->tm_year' must point to class/struct/union/generic type type is ''unknown-type'' C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(102): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(102): error C2227: left of '->tm_mon' must point to class/struct/union/generic type type is ''unknown-type'' C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(103): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(103): error C2227: left of '->tm_mday' must point to class/struct/union/generic type type is ''unknown-type'' C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(111): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(111): error C2227: left of '->tm_hour' must point to class/struct/union/generic type type is ''unknown-type'' C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(112): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(112): error C2227: left of '->tm_min' must point to class/struct/union/generic type type is ''unknown-type'' C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(113): error C2065: 'curr_ptr' : undeclared identifier C:\src\SDK\Boost\boost_1_60_0\boost_1_60_0\boost/date_time/microsec_time_clock.hpp(113): error C2227: left of '->tm_sec' must point to class/struct/union/generic type type is ''unknown-type''

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(no subject)
by Виктория Доможакова 24 Feb '16

24 Feb '16

Hello. I have template class. I want to serialize it. But I don't know how. template <class T> class AverDayVisTask : public DrawTask, public AverDayVisMathTask <T> { public: // some functions private: friend class boost::serialization::access; //! boost::serialize template <class Archive> void serialize(Archive& ar, const unsigned int /*version*/) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(DrawTask); ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(AverDayVisMathTask<T>); //<----- error } }; // class AverDayVisTask BOOST_CLASS_VERSION(AverDayVisTask<SphericalModel>, 1); BOOST_CLASS_VERSION(AverDayVisTask<SphericalNutModel>, 1); BOOST_CLASS_VERSION(AverDayVisTask<WGS84Model>, 1); BOOST_CLASS_IMPLEMENTATION(AverDayVisTask<SphericalModel>, boost::serialization::object_class_info); BOOST_CLASS_IMPLEMENTATION(AverDayVisTask<SphericalNutModel>, boost::serialization::object_class_info); BOOST_CLASS_IMPLEMENTATION(AverDayVisTask<WGS84Model>, boost::serialization::object_class_info); How fix my problem? -- Виктория Доможакова

2 1

[graph] abort algorithm execution from a visitor
by Frank Tetzel 23 Feb '16

23 Feb '16

Hi all, i played around with the bfs example calculating distances to all vertices. Now i just want to calculate the distance between two vertices, so i want to stop when the target vertex is visited. If i understood the visitor concept correctly it's not really possible to change the behaviour of the algorithm from a visitor. Does anybody know of any workaround to do early exit? Do i have to implement a new algorithm for this? In a different thread on this list Paolo Bolzoni wrote that he aborts in a custom visitor by throwing an exception. Is this the only way? I'm using bfs here and not dijkstra because i have uniform edge weights. Btw, if someone could fix the documentation that would be really nice: http://www.boost.org/doc/libs/1_60_0/libs/graph/doc/bfs_visitor.html The code snippet there did not work for me. I had to wrap make_bfs_visitor() in visitor() like it is done in examples/bfs.cpp too. Regards, Frank

2 2

Boost 1.60 Raspberry Pi lockfree::queue compilation error
by Alexander Simpson 23 Feb '16

23 Feb '16

Hello, I’m trying to compile a project that makes use of boost::lockfree::queue on a Raspberry Pi 2 running Jessie. I built version 1.60 of Boost myself (apt-get was out of date) with sudo ./bjam install. I’m not cross-compiling. When I attempt to compile a project that uses the boost library I get the error listed below (where boostreader.cpp is the file written by me). I found a patch suggested two years ago here (https://svn.boost.org/trac/boost/ticket/9041 <https://svn.boost.org/trac/boost/ticket/9041>) but the changes in that patch seem to have already applied in 1.60, so I’m at a loss as to what to do. Assistance would be greatly appreciated. Alexander Simpson Error message: In function `boost::lockfree::detail::freelist_stack<boost::lockfree::queue<int, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::node, std::allocator<boost::lockfree::queue<int, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::node> >::~freelist_stack()': main.cpp:(.text._ZN5boost8lockfree6detail14freelist_stackINS0_5queueIiNS_9parameter5void_ES5_S5_E4nodeESaIS7_EED2Ev[_ZN5boost8lockfree6detail14freelist_stackINS0_5queueIiNS_9parameter5void_ES5_S5_E4nodeESaIS7_EED5Ev]+0x18): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree6detail14freelist_stackINS0_5queueIiNS_9parameter5void_ES5_S5_E4nodeESaIS7_EED2Ev[_ZN5boost8lockfree6detail14freelist_stackINS0_5queueIiNS_9parameter5void_ES5_S5_E4nodeESaIS7_EED5Ev]+0x24): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.o: In function `boost::lockfree::queue<int, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::queue(unsigned int)': main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x6c): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x78): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0xb0): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0xbc): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0xd8): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0xe4): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x148): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x170): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x1ec): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x1f8): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x224): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC2Ej[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_EC5Ej]+0x230): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.o: In function `boost::lockfree::queue<int, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::~queue()': main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x58): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x64): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x90): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x9c): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0xc8): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0xd4): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x128): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x134): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x164): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x170): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x180): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x18c): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x1c8): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x1d4): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x1e8): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x1f4): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x218): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x224): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x260): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x26c): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x278): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' main.cpp:(.text._ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED2Ev[_ZN5boost8lockfree5queueIiNS_9parameter5void_ES3_S3_ED5Ev]+0x284): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.o: In function `BoostReader::run()': boostreader.cpp:(.text+0x84): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0x90): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0xb8): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0xc4): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0xf0): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0xfc): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0x11c): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0x128): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0x1ac): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0x1dc): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0x204): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0x210): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0x264): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0x288): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()' boostreader.cpp:(.text+0x438): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::scoped_lock(void const volatile*)' boostreader.cpp:(.text+0x454): undefined reference to `boost::atomics::detail::lockpool::scoped_lock::~scoped_lock()'

2 1

boost 1.54: problem with building documentation.
by Paul K 22 Feb '16

22 Feb '16

Hallo people. I need to have documentation in man pages format on my ubuntu 14.04. Unfortunatelly, I fail with this task. The following are the steps I've performed. In step 11 I do "../b2" instead "../b2 man" just to highlight that the problem is not related to building the man pages. Of course "../b2 man" fails as well Could You please help me with it? 1. install following packages for man pages build. lubuntu.14.04$ sudo apt-get install xsltproc lubuntu.14.04$ sudo apt-get install doxygen 2. lubuntu.14.04$ dpkg --list | grep libboost-all ii libboost-all-dev 1.54.0.1ubuntu1 i386 Boost C++ Libraries development files (ALL) (default version) 3. download boost_1_54_0.tar.bz2, unpack to ~/ 4. cd ~/boost_1_54_0 5. ./bootstrap prepares build configuration and puts it to project-config.jam. 6. ./b2 builds whole the boost libraries, but does not install them into the system. 7. lubuntu.14.04$ export BOOST_ROOT=/home/userp/boost_1_54_0 8. lubuntu.14.04$ cd ~/boost.doc/ 9. lubuntu.14.04$ ~/boost_1_54_0/tools/boostbook/setup_boostbook.sh Downloading DocBook XSLT Stylesheets version 1.75.2... Expanding DocBook XSLT Stylesheets into /home/userp/boost.doc/docbook-xsl-1.75.2...done. Downloading DocBook XML DTD version 4.2... Expanding DocBook XML DTD into /home/userp/boost.doc/docbook-dtd-4.2... done. Searching for xsltproc... /usr/bin/xsltproc. Searching for Doxygen... /usr/bin/doxygen. Searching for Java... /usr/bin/java. Downloading FOP distribution version 0.94... Expanding FOP distribution into /home/userp/boost.doc/fop-0.94... done. Updating Boost.Jam configuration in /home/userp/user-config.jam... done. Done! Execute "bjam --v2" in a documentation directory to generate documentation with BoostBook. If you have not already, you will need to compile Boost.Jam. 10. lubuntu.14.04$ cd ~/boost_1_54_0/doc 11. lubuntu.14.04$ ../b2 Performing configuration checks - has_icu builds : yes (cached) /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:1099: in virtual-target.register-actual-name from module virtual-target error: Duplicate name of actual target: <p../bin.v2/libs/filesystem/build/gcc-4.9.3/release/link-static>libboost_filesystem.a error: previous virtual target { gcc%gcc.archive-libboost_filesystem.a.STATIC_LIB { gcc%gcc.compile.c++-codecvt_error_category.o.OBJ { codecvt_error_category.cpp.CPP } } { gcc%gcc.compile.c++-operations.o.OBJ { operations.cpp.CPP } } { gcc%gcc.compile.c++-path.o.OBJ { path.cpp.CPP } } { gcc%gcc.compile.c++-path_traits.o.OBJ { path_traits.cpp.CPP } } { gcc%gcc.compile.c++-portability.o.OBJ { portability.cpp.CPP } } { gcc%gcc.compile.c++-unique_path.o.OBJ { unique_path.cpp.CPP } } { gcc%gcc.compile.c++-utf8_codecvt_facet.o.OBJ { utf8_codecvt_facet.cpp.CPP } } { gcc%gcc.compile.c++-windows_file_codecvt.o.OBJ { windows_file_codecvt.cpp.CPP } } } error: created from ../libs/filesystem/build/boost_filesystem error: another virtual target { gcc%gcc.archive-libboost_filesystem.a.STATIC_LIB { gcc%gcc.compile.c++-codecvt_error_category.o.OBJ { codecvt_error_category.cpp.CPP } } { gcc%gcc.compile.c++-operations.o.OBJ { operations.cpp.CPP } } { gcc%gcc.compile.c++-path.o.OBJ { path.cpp.CPP } } { gcc%gcc.compile.c++-path_traits.o.OBJ { path_traits.cpp.CPP } } { gcc%gcc.compile.c++-portability.o.OBJ { portability.cpp.CPP } } { gcc%gcc.compile.c++-unique_path.o.OBJ { unique_path.cpp.CPP } } { gcc%gcc.compile.c++-utf8_codecvt_facet.o.OBJ { utf8_codecvt_facet.cpp.CPP } } { gcc%gcc.compile.c++-windows_file_codecvt.o.OBJ { windows_file_codecvt.cpp.CPP } } } error: created from ../libs/filesystem/build/boost_filesystem error: added properties: <auto-index-internal>off <auto-index-no-duplicates>off <auto-index-section-names>on <auto-index-verbose>off <auto-index>off <format>docbook error: removed properties: <format>html /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:484: in actualize-no-scanner from module object(file-target)@3468 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:134: in class(a)virtual-target.actualize from module object(file-target)@3468 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:815: in actualize-source-type from module object(action)@3786 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:836: in actualize-sources from module object(action)@3786 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:776: in class(a)action.actualize from module object(action)@3786 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:311: in actualize-action from module object(file-target)@3787 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:493: in actualize-no-scanner from module object(file-target)@3787 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:134: in class(a)virtual-target.actualize from module object(file-target)@3787 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:815: in actualize-source-type from module object(action)@3793 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:834: in actualize-sources from module object(action)@3793 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:776: in class(a)action.actualize from module object(action)@3793 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:311: in actualize-action from module object(file-target)@3794 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:493: in actualize-no-scanner from module object(file-target)@3794 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:134: in class(a)virtual-target.actualize from module object(file-target)@3794 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:815: in actualize-source-type from module object(action)@7122 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:834: in actualize-sources from module object(action)@7122 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:776: in class(a)action.actualize from module object(action)@7122 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:311: in actualize-action from module object(file-target)@7123 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:493: in actualize-no-scanner from module object(file-target)@7123 /home/userp/boost_1_54_0/tools/build/v2/build/virtual-target.jam:134: in class(a)virtual-target.actualize from module object(file-target)@7123 /home/userp/boost_1_54_0/tools/build/v2/build-system.jam:720: in load from module build-system /home/userp/boost_1_54_0/tools/build/v2/kernel/modules.jam:289: in import from module modules /home/userp/boost_1_54_0/tools/build/v2/kernel/bootstrap.jam:139: in boost-build from module /home/userp/boost_1_54_0/boost-build.jam:17: in module scope from module regards

1 0

boost::any constructors
by David 22 Feb '16

22 Feb '16

Hi, boost::any has a perfect forward constructor declared as: template<typename ValueType> any(ValueType&& value , typename boost::disable_if<boost::is_same<any&, ValueType> >::type* = 0 // disable if value has type `any&` , typename boost::disable_if<boost::is_const<ValueType> >::type* = 0) // disable if value has type `const ValueType&&` : content(new holder< typename decay<ValueType>::type >(static_cast<ValueType&&>(value))) {} The is_const SFINAE exclusion forces const types to the regular copy constructor: template<typename ValueType> any(const ValueType & value) : content(new holder< BOOST_DEDUCED_TYPENAME remove_cv<BOOST_DEDUCED_TYPENAME decay<const ValueType>::type>::type >(value)) {} What is different about how the regular copy constructor treats a constant value than what the perfect forward construct would do if the is_const exclusion were removed? Thanks, David

2 1

Nested BOOST_FOREACH crash
by peyman＠ausdia.com 22 Feb '16

22 Feb '16

Good Day Boosters! I am experiencing sporadic crashes that look like memory problem when I have nested (2 level) BOOST_FOREACH loops. Reason I say it looks like memory problem is because slightest change will make it crash or not crash. For example, adding a simple cout would change it! I cannot provide a testcase. So I am just wondering if anybody has experienced the same, or know what could be going on. I am using Boost 1.57. Cheers, Peyman

2 1

Need help when adapting boost 1.59.0 to WinRT
by Nguyễn Trung Duy 22 Feb '16

22 Feb '16

Dear Boost team, I need your help with adapting boost 1.59 to WinRT. I am working on boost and reSIProcate. I built boost and integrated it with reSIProcate project. However, when build reflow project, I got stuck with bellow bugs. I wonder with your great experiences, could you please give me some advice. The error happens at line 96 : #if defined(BOOST_ASIO_WINDOWS_RUNTIME) const int max_addr_v4_str_len = 256; const int max_addr_v6_str_len = 256; typedef unsigned __int32 u_long_type; typedef unsigned __int16 u_short_type; struct in4_addr_type { u_long_type s_addr; }; // error at here And the logs: *\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(96): error C3927: '->': trailing return type is not allowed after a non-function declarator (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(96): error C3484: syntax error: expected '->' before the return type (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(96): error C3613: missing return type after '->' ('int' assumed) (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(96): error C3646: 'S_addr': unknown override specifier (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C3927: '->': trailing return type is not allowed after a non-function declarator (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C3484: syntax error: expected '->' before the return type (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C3613: missing return type after '->' ('int' assumed) (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C3646: 'Byte': unknown override specifier (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C2143: syntax error: missing ',' before '[' (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C2143: syntax error: missing ')' before ';' (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C2143: syntax error: missing ';' before ')' (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/detail/socket_types.hpp(98): error C2059: syntax error: ')' (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/ip/address_v4.hpp(61): error C2039: 'S_addr': is not a member of 'default::uint32' (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/ip/address_v4.hpp(147): error C2039: 'S_addr': is not a member of 'default::uint32' (compiling source file MediaStream.cxx)\boost-msvc-14.0-store\boost/asio/ip/address_v4.hpp(153): error C2039: 'S_addr': is not a member of 'default::uint32' (compiling source file MediaStream.cxx)* Thanks you so much!!!! *--* *Best Regards,* *NGUYEN TRUNG DUY* *Android Developer* *Mobile*: (+84)977 46 12 23 *Skype :* trungduy150388 *Website*: http://nguyentrungduy.com/ *Blog*: http://dbox.nguyentrungduy.com/ *Github*: https://github.com/nguyentrungduy

2 2

Newbie
by Shan Wijesinghe 22 Feb '16

22 Feb '16

Hi all, I'm a new member to C++ boost and I have a fairly good knowledge in programming in C++. I'm very much excited to join this group and I need directions from the senior members on how to start myself. Please help me here. Thanks in advance. regards, DilSHAN.

6 11

Query on Boost.DLL
by Leo Carreon 21 Feb '16

21 Feb '16

Hi, I have been reading the Boost.DLL documentation. Can a single plugin support multiple API’s? If yes, when the multiple API’s are used at the same time; will there be only one instance of the plugin loaded or will there be multiple instances loaded? Regards, Leo

2 1