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[MultIndex] Iterator/Range validity when modify entries.
by Deniz Bahadir 09 Sep '16

09 Sep '16

Hi guys, While trying to implementing a new feature, I came across a question concerning iterator/range validity of boost::multi_index. To understand the question, here is my setup: <code> // Database entry. struct Entry { int key1; int key2; }; // Access-keys. struct Index1{}; struct Index2{}; using namespace boost::multi_index; using namespace boost; // The multi_index database. using Database = multi_index_container< Entry, indexed_by< hashed_non_unique< tag<Index1>, member<Entry, int, &Entry::key1> >, hashed_non_unique< tag<Index2>, member<Entry, int, &Entry::key2> > > >; Database db; /* ... Here db is getting filled. ... */ </code> I obtain a range of entries from that database with the same value for key1 through the first index and want to modify each single entry of that range. However, I will only modify key2 (which is only used as key in the other index)! My main question is now: Does modifying an entry invalidate my range although I do not modify the member that was used as key for obtaining the range? The code in question would possibly look like this: <code> auto& index1 = db.get<Index1>(); auto range = index1.equal_range(42); for (auto it = range.first; it != range.second; ++it) { index1.modify(it, [](Entry& entry) { entry.key2 = 123; // <---- Does this invalidate my range? // entry.key1 is not getting modified! }); } </code> My follow-up question is then: If the range is indeed invalidated, what would be a working solution for that problem? Incrementing the loop-iterator by hand before modifying the entry (and not letting the loop do it)? So, would the following be a valid solution? <code> auto& index1 = db.get<Index1>(); auto range = index1.equal_range(42); if (range.first != range.second) { auto it = range.first; auto end = --range.second; do { index1.modify(it++, [](Entry& entry) { entry.key2 = 123; // <---- Does this invalidate my range? // entry.key1 is not getting modified! }); while (it != end); } </code> Of course, neither do I want to iterate over an entry twice (and thereby modify it twice) nor do I want miss an entry. And one last question: Does this problem or its solution apply to all index-types or just to hashed indexes? Thanks for the clarification. Deniz PS: Oh and by the way: Boost.MultiIndex is a really cool library. :-)

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[range] const-only UDT works as std algos, but not with boost range.
by John 08 Sep '16

08 Sep '16

A class that exposes a const_iterator, but does not expose a mutable iterator, works with std:: algorithms and range-for() loop, but does not work with boost range. // This works with std algorithms and range-for, but not with boost range. class C { public: typedef blah const_iterator; const_iterator begin() const; const_iterator end() const; }; const C c; for (auto x : c) { } // OK std::for_each(std::begin(c), std::end(c), fn); // OK boost::for_each (c, fn); // ERROR: fails SinglePassRange concept (GCC-6.2) The workaround is to add a non-const iterator type that is the same as the const iterator, and to add two additional non-const begin/end methods. class D { public: typedef blah const_iterator; const_iterator begin() const; const_iterator end() const; // kludge to make it work with boost. typedef const_iterator iterator; iterator begin(); iterator end(); }; const D d; boost::for_each (d, fn); // OK Is there a simpler solution?

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[Boost.Asio] Suggestion to improve the docs
by dariomt＠gmail.com 07 Sep '16

07 Sep '16

Hi, In the Boost.Asio docs (and in the standalone Asio) the io_service docs has a section "Stopping the io_service from running out of work" where it explains "if the application requires that all operations and handlers be allowed to finish normally, the work object may be explicitly destroyed" and then shows some code using an std::auto_ptr<boost::asio::io_service::work> which will keep the work object on the heap. However, in the accepted answer to [1] the same behavior is accomplished with a, IMHO, more elegant solution: with a boost::optional<boost::asio::io_service::work>, which, if I'm correct, will keep the work object on the stack. To destroy the work object the optional is assigned to boost::none. I'd suggest improving the docs with the boost::optional case, which - does not use "ugly" (and deprecated) auto_ptr - keeps the boost::asio::io_service::work object on the stack Regards [1] http://stackoverflow.com/questions/15568100/confused-when-boostasioio-servi…

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[boost][graph] Support for C++11 on adjacency list
by Marco Craveiro 06 Sep '16

06 Sep '16

Hi boost-users, Thanks very much for a great library - Boost in general and Boost Graph in particular . I'm trying to understand the status of a fix on Boost Graph - any pointers are greatly appreciated. My basic problem is that trying to use Boost Graph in C++ 11 (or later) mode seems to break due to a bug in adjacency list. This bug has been reported in Track [1], [2] and elsewhere [3]. Up to now I have been carrying local patches to fix this issue as per tickets [4], but to the untrained eye, it appears this issue has been fixed upstream a while ago [5]. I've read the discussion regarding Boost Graph merges [6] but - apologies - It's still not clear to me where we are. Is it possible to confirm: - that the fix is in develop and will be shipped? - if so, would it be shipped with Boost 1.62 or with a later release? I read the release notes [7] but couldn't see any references to Boost Graph. Many thanks for your time. -- Marco Craveiro MD, Domain Driven Consulting about: http://about.me/marcocraveiro blog: http://mcraveiro.blogspot.co.uk twitter: https://twitter.com/MarcoCraveiro That the Ideas are themselves manifestations (of the Idea-Idea) and that the Idea-Idea is a-kind-of Manifestation-Idea—which is a-kind-of itself, so that the system is completely self-describing— would have been appreciated by Plato as an extremely practical joke [Plato]. -- Alan Key [1] #11164 Graph adjacency_list, add_vertex compile error on clang 3.6 https://svn.boost.org/trac/boost/ticket/11164 [2] #10382 1.56.0 Graph adjacency_list has compile errors on g++ 4.6.4 https://svn.boost.org/trac/boost/ticket/10382 [3] https://lists.debian.org/debian-mentors/2016/01/msg00327.html [4] https://github.com/DomainDrivenConsulting/dogen/blob/master/patches/boost_1… [5] Fix compilation with gcc 4.4 in C++11 mode https://github.com/boostorg/graph/commit/0f4ecbcd4bd13743f74745257b95fabdbd… [6] http://lists.boost.org/Archives/boost/2016/08/230533.php [7] http://www.boost.org/users/history/version_1_62_0.html

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Fwd: Boost.Range: 'Use of deleted function' GCC error when using lambdas
by Remko Tronçon 05 Sep '16

05 Sep '16

Hi, I have the following piece of code: std::vector<std::string> list1; std::vector<std::string> list2; push_back(list2, list1 | transformed([](const auto& w) { return w; }) | sliced(0, 1)); This compiles fine with CLang, but with GCC I get the error: /usr/include/boost/optional/optional.hpp:546:64: error: use of deleted function 'main(int, const char**)::<lambda(const auto:1&)>& main(int, const char**)::<lambda(const auto:1&)>::operator=(const main(int, const char**)::<lambda(const auto:1&)>&)' void assign_value ( rval_reference_type val ) { get_impl() = static_cast<rval_reference_type>(val); } ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:46:19: note: a lambda closure type has a deleted copy assignment operator | transformed([](const auto& w) { return w; }) When I replace the lambda by a regular function, the code compiles; when I don't use 'sliced' (but pipe it to e.g. 'transformed' instead), the code also compiles. Is there a way to make this code compile with a lambda? thanks! Remko PS: I'm using GCC 6.2.0 with Boost 1.61.

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using asio.hpp - boost::system::generic_category()
by Hermann Norpois 04 Sep '16

04 Sep '16

Hello, I just started with boost and it is obvious that I do not understand give my compiler (not mentioning code::blocks) the correct instructions. I installed boost_1_61_0 on Ubuntu 14.04 and followed the instruction. So I did (as root after sudo -i) in the directory of boost_1_61_0. I use g++4.9. It was the same with g++4.8. 1) ./bootstrap.sh prefix=/usr/local 2) ./b2 install So the libs are: /usr/local/lib The headers: /usr/include/boost Actually I was interested in some stuff with asio. So I started with this code from the tutorial. http://www.boost.org/doc/libs/1_61_0/doc/html/boost_asio/tutorial/tutdaytim… g++ -Wall main.cpp -o zclient /tmp/ccxx7PrW.o: In Funktion `__static_initialization_and_destruction_0(int, int)': main.cpp:(.text+0x52e): Nicht definierter Verweis auf `boost::system::generic_category()' main.cpp:(.text+0x53a): Nicht definierter Verweis auf `boost::system::generic_category()' main.cpp:(.text+0x546): Nicht definierter Verweis auf `boost::system::system_category()' /tmp/ccxx7PrW.o: In Funktion `boost::system::error_code::error_code()': main.cpp:(.text._ZN5boost6system10error_codeC2Ev[_ZN5boost6system10error_codeC5Ev]+0x17): Nicht definierter Verweis auf `boost::system::system_category()' /tmp/ccxx7PrW.o: In Funktion `boost::asio::error::get_system_category()': main.cpp:(.text._ZN5boost4asio5error19get_system_categoryEv[_ZN5boost4asio5error19get_system_categoryEv]+0x5): Nicht definierter Verweis auf `boost::system::system_category()' /tmp/ccxx7PrW.o: In Funktion `boost::asio::detail::posix_thread::~posix_thread()': main.cpp:(.text._ZN5boost4asio6detail12posix_threadD2Ev[_ZN5boost4asio6detail12posix_threadD5Ev]+0x26): Nicht definierter Verweis auf `pthread_detach' /tmp/ccxx7PrW.o: In Funktion `boost::asio::detail::posix_thread::join()': main.cpp:(.text._ZN5boost4asio6detail12posix_thread4joinEv[_ZN5boost4asio6detail12posix_thread4joinEv]+0x2b): Nicht definierter Verweis auf `pthread_join' /tmp/ccxx7PrW.o: In Funktion `boost::asio::detail::posix_thread::start_thread(boost::asio::detail::posix_thread::func_base*)': main.cpp:(.text._ZN5boost4asio6detail12posix_thread12start_threadEPNS2_9func_baseE[_ZN5boost4asio6detail12posix_thread12start_threadEPNS2_9func_baseE]+0x29): Nicht definierter Verweis auf `pthread_create' collect2: error: ld returned 1 exit status I have to add that the simple programm in the starting guide worked properly http://www.boost.org/doc/libs/1_61_0/more/getting_started/unix-variants.htm… via g++ -Wall main.cpp -o zu It worked in Code::Blocks as well (without any additional information). Even the second simple programm (same link) I managed to compile giving the full path: g++ -Wall main.cpp -o extractmail /usr/local/lib/libboost_regex.a At no time I had not to instruct the compiler about the headers. I was wondering. So it must have anything to do with the libs. Coming back to my asio- example. Do I need libs for it? I guess is has something to do with the expression -lboost_system. I used it without understanding it. But it did not help. Actually I would appreciate if was able to use Code::Blocks but I did not manage to give Code::Blocks the correct instructions. I found some hints, at least amounts of hints ... But it did not work at all. If somebody is able to explain it (for idiots) ... This would be great. Thanks Hermann

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passing variables into thread
by Alexander Carôt 03 Sep '16

03 Sep '16

Hello all, I have a thrad function like: void sj::eventTrigger(){ boost::mutex::scoped_lock lock(eventTriggerMutex); while (eventTriggerActive){ dFC->eventTriggerLock.wait(lock); /// do something with pointer-variable } } This function is executed by a eventTriggerLock.notify_all() – call from other objects and when I need to pass certain variables into the thread I have been unsing a global pointer variable. Now my question: I wonder if there is a way to get rid of the pointer variable and directly pass variables into the thread such as: eventTriggerLock.notify_all(data1) void sj::eventTrigger(int data1){ boost::mutex::scoped_lock lock(eventTriggerMutex); while (eventTriggerActive){ dFC->eventTriggerLock.wait(lock); /// do something with data1 } } Any hint welcome – thanks in advance Alex

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Priority deque?
by Paolo Bolzoni 01 Sep '16

01 Sep '16

Dear list, I was wondering if there some kind of "priority queue", that is a data structure akin the priority queue, but where you can top and pop from both sides. My use case is that I need to quickly access the maximum, but also not push new elements if they are smaller than the minimum. I am aware I can use a std::set, but in the current implementation where I always push new elements even if they are bad, using a std::set the performance is significantly worse. Yours faithfully, Paolo

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iostreams: ceased devolopment?
by Christian Meesters 01 Sep '16

01 Sep '16

Hi, I noticed that there are numerous issues in the bug list, regarding boost iostreams. However, the current doc states Copyright 2004-2007 and Tickets do not receive responses. (I even read: "(I tried e-mailing Jonathan Turkanis directly, but the e-mail address on the website seems to be not used anymore)" in ticket 7574. So, my question is: I anyone maintaining this library? If not: I doubt that there is a good alternative, because iostreams just is convenient to use and a selling point to for boost. It would be a pitty. Best regards, Christian

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Re: [Boost-users] [serialization] Problem building boost 1.56 under gcc 5.3
by Nolen, Steven Douglas 31 Aug '16

31 Aug '16

This is from a previous email sent by my colleague... OS: Red Hat 6 Compiler: GCC 5.3 I installed from a source distribution and the root paths are $HOME/packages/boost/v1_61/include/1_61 for the include path and $HOME/packages/boost/v1_61/lib/gnu-5.3 for the library path. My compilation command is g++ -o demo -I. -I$HOME/packages/boost/v1_61/include/1_61 demo.cpp -L$HOME/packages/boost/v1_61/lib/gnu-5.3 -lboost_serialization-gcc53-1_61 and these are the link errors /tmp/ccFM57HA.o: In function `boost::archive::text_iarchive::text_iarchive(std::istream&, unsigned int)': demo.cpp:(.text._ZN5boost7archive13text_iarchiveC2ERSij[_ZN5boost7archive13text_iarchiveC5ERSij]+0x36): undefined reference to `boost::archive::detail::shared_ptr_helper::shared_ptr_helper()' /tmp/ccFM57HA.o: In function `boost::archive::text_iarchive::~text_iarchive()': demo.cpp:(.text._ZN5boost7archive13text_iarchiveD2Ev[_ZN5boost7archive13text_iarchiveD5Ev]+0x25): undefined reference to `boost::archive::detail::shared_ptr_helper::~shared_ptr_helper()' /tmp/ccFM57HA.o: In function `void boost::archive::detail::load_pointer_type<boost::archive::text_iarchive>::invoke<bus_route*>(boost::archive::text_iarchive&, bus_route*&)': demo.cpp:(.text._ZN5boost7archive6detail17load_pointer_typeINS0_13text_iarchiveEE6invokeIP9bus_routeEEvRS3_RT_[_ZN5boost7archive6detail17load_pointer_typeINS0_13text_iarchiveEE6invokeIP9bus_routeEEvRS3_RT_]+0x56): undefined reference to `boost::archive::detail::basic_iarchive::load_pointer(void*&, boost::archive::detail::basic_pointer_iserializer const*)' /tmp/ccFM57HA.o: In function `void boost::archive::detail::load_pointer_type<boost::archive::text_iarchive>::invoke<bus_stop*>(boost::archive::text_iarchive&, bus_stop*&)': demo.cpp:(.text._ZN5boost7archive6detail17load_pointer_typeINS0_13text_iarchiveEE6invokeIP8bus_stopEEvRS3_RT_[_ZN5boost7archive6detail17load_pointer_typeINS0_13text_iarchiveEE6invokeIP8bus_stopEEvRS3_RT_]+0x56): undefined reference to `boost::archive::detail::basic_iarchive::load_pointer(void*&, boost::archive::detail::basic_pointer_iserializer const*)' /tmp/ccFM57HA.o: In function `boost::archive::text_iarchive& boost::archive::detail::interface_iarchive<boost::archive::text_iarchive>::operator>><boost::archive::class_name_type>(boost::archive::class_name_type&)': demo.cpp:(.text._ZN5boost7archive6detail18interface_iarchiveINS0_13text_iarchiveEErsINS0_15class_name_typeEEERS3_RT_[_ZN5boost7archive6detail18interface_iarchiveINS0_13text_iarchiveEErsINS0_15class_name_typeEEERS3_RT_]+0x2f): undefined reference to `boost::archive::text_iarchive_impl<boost::archive::text_iarchive>::load_override(boost::archive::class_name_type&, int)' collect2: error: ld returned 1 exit status I am at a loss why this will not build successfully. Any help would be appreciated.

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boost libs can't find each other in non-standard location
by Hugh Caley 31 Aug '16

31 Aug '16

I'm having problems getting my boost libs to find each other on certain platforms. We're distributing the boost libs in a non-standard location. I created a runtime path in my apps that finds the boost libs fine, per ldd, but when a boost lib is dynamically liked to another boost lib in the same location it can't find it. For instance, libboost_thread needs libboost_atomic, and can't find it, even though it's in the same dir. On Linux, MacOSX and AIX, they can find each other. On Solaris and HP-UX, though, they can't. Boost version is 1_59. Strangely, we had this working with a previous version of our software on Solaris linked with Boost 1_55. I don't see the difference. I tried setting a runtime path of '.' in the boost libs themselves, but it ends up being '.' wherever I am, NOT where the lib is. -- Hugh Caley Software Developer, Rocket Aldon Rocket Software 2200 Powell Street · Suite 900 · Emeryville · CA · 94608-1809 · USA · Tel: +1.510.285.8542 Email:hcaley@rocketsoftware.com<mailto:Email:hcaley@rocketsoftware.com> Web:http://aldon.rocketsoftware.com ================================ Rocket Software, Inc. and subsidiaries ■ 77 Fourth Avenue, Waltham MA 02451 ■ +1 877.328.2932 ■ +1 781.577.4321 Unsubscribe From Commercial Email – unsubscribe(a)rocketsoftware.com Manage Your Subscription Preferences - http://info.rocketsoftware.com/GlobalSubscriptionManagementEmailFooter_Subs… Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy ================================ This communication and any attachments may contain confidential information of Rocket Software, Inc. All unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify Rocket Software immediately and destroy all copies of this communication. Thank you.

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[thread] Error checking mutex
by Paul Fee 31 Aug '16

31 Aug '16

Hi all, When using pthread mutexes a number of types are available (man pthread_mutexattr_settype). The normal and recursive types are exposed via boost as boost::mutex and boost::recursive_mutex. I'd like to use PTHREAD_MUTEX_ERRORCHECK mutexes but don't see such a mutex type within boost or C++ std namespaces. I'm wondering why this C feature is not exposed to C++ users. Are there plans to do so? Has it been omitted because this POSIX feature is not portable to other platforms? For experimentation purposes I've duplicated then modified the code from boost/thread/recursive_mutex.hpp and boost/thread/pthread/recursive_mutex.hpp to create errorcheck_mutex.hpp on my Fedora 24 system and it gives me the error checking functionality I'm after. Is this a reasonable approach to plug the gap in Boost or is there a reason not to do so? Thanks, Paul

2 1

Boost Process Sync example hanging
by Shubha Ramani 31 Aug '16

31 Aug '16

on Linux. This code hangs at getline. I replaced "test.exe" with "ls". Why doesn't it work ? https://github.com/BorisSchaeling/boost-process/blob/master/libs/process/ex… Shubha D. Ramanishubharamani(a)gmail.com shubharamani(a)yahoo.com

1 1

[serialization] Problem building boost 1.56 under gcc 5.3
by Nolen, Steven Douglas 31 Aug '16

31 Aug '16

We are trying to build on a linux platform using gcc-5.3. We already have installations for gcc-4.6.1 thru gcc-4.9 that work. When we tried moving to gcc-5.3, the build worked (apparently), but then we saw linking errors of this ilk... <blah, blah, blah> undefined reference to `boost::archive::text_oarchive_impl<boost::archive::text_oarchive>::save(std::string const&) The same linking errors happen when we build our code and when we tried just building the demo samples with the package. We have tried building a more recent version of boost and also scouring stackoverflow and others. Anyone having similar issues, or who might be aware of what's happening?

2 1

create_pipe() not working ?
by Shubha Ramani 30 Aug '16

30 Aug '16

Is this example outdated ? How come I can't create a boost pipe ? https://us-mg0.mail.yahoo.com/neo/launch?.rand=3f0ef0mo8jiih#1996284311 boost::process::pipe p = create_pipe(); file_descriptor_sink sink(p.sink, close_handle); execute( run_exe("test.exe"), bind_stdout(sink) ); file_descriptor_source source(p.source, close_handle); stream<file_descriptor_source> is(source); std::string s; std::getline(is, s); Shubha D. Ramanishubharamani(a)gmail.com shubharamani(a)yahoo.com

1 0

[type_erasure] static check of concept compliance
by Joaquin M López Muñoz 30 Aug '16

30 Aug '16

Consider: using any_t=any< boost::mpl::vector< copy_constructible<>, incrementable<> > >; struct foo{}; int main() { std::cout<<std::is_constructible<any_t,foo>::value<<"\n"; } This program outputs 1 as the ctor of boost::type_erasure::any<Concept> if not restricted to Concept-compliant args, but of course we can't use foo to construct any_t: any_t x{foo{}}; // compile error as foo is not incrementable Is there a (publicly available) way to determine if an argument of type U can be used to construct an any<Concept,T>? I'd like to have this for doing SFINAE in my any-using code. Thank you, Joaquín M López Muñoz

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Yet another issue with BGL Deserialization
by giacomo＠openmailbox.org 28 Aug '16

28 Aug '16

I'm trying to both serialize and deserialize the data in a graph format. The definition of my graph is the following one. #include <boost/graph/adjacency_list.hpp> #include <boost/graph/directed_graph.hpp> #include <boost/graph/adj_list_serialize.hpp> #include <boost/archive/binary_oarchive.hpp> #include <boost/archive/binary_iarchive.hpp> #include <boost/serialization/string.hpp> #include <boost/serialization/binary_object.hpp> class VFull { public: VFull(); unsigned int id, hash, year; std::string ip, organization; VFull(unsigned int id, unsigned int hash, unsigned int year, std::string ip, std::string organization); template<class Archive> void serialize(Archive & ar, const unsigned int version); }; class EFull { public: EFull(); template<class Archive> void serialize(Archive & ar, const unsigned int version); }; class GFull { public: template<class Archive> void serialize(Archive & ar, const unsigned int version); }; //Defining the graph data structure. Using the vecS specification typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS,VFull,EFull,GFull> graph_t; typedef boost::graph_traits<graph_t>::vertex_descriptor result_vertex_descriptor; typedef boost::graph_traits<graph_t>::edge_descriptor result_edge_descriptor; It seems to me that I have no problems in the serialization process, while I have some issues in the deserialization part. In fact, I have no linking errors until this piece of code is added to my source: #include <iomanip> #include <iostream> #include <fstream> { std::ifstream file(path,std::ios_base::binary); boost::archive::binary_iarchive store{file}; store >> graph; // Deserialization part that triggers the error } I tried to read some questions here and to read the Boost manual, but they didn't solve my problem. In particular, I have this error: Undefined symbols for architecture x86_64: "void EFull::serialize<boost::archive::binary_iarchive>(boost::archive::binary_iarchive&, unsigned int)", referenced from: void boost::serialization::access::serialize<boost::archive::binary_iarchive, EFull>(boost::archive::binary_iarchive&, EFull&, unsigned int) in boostOthers.cpp.o "void GFull::serialize<boost::archive::binary_iarchive>(boost::archive::binary_iarchive&, unsigned int)", referenced from: void boost::serialization::access::serialize<boost::archive::binary_iarchive, GFull>(boost::archive::binary_iarchive&, GFull&, unsigned int) in boostOthers.cpp.o "void VFull::serialize<boost::archive::binary_iarchive>(boost::archive::binary_iarchive&, unsigned int)", referenced from: void boost::serialization::access::serialize<boost::archive::binary_iarchive, VFull>(boost::archive::binary_iarchive&, VFull&, unsigned int) in boostOthers.cpp.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) By the way, I'm serializing and deserializing strings and unsigned ints, "native data types" that seems to be supported by boost: //VERTICES VFull::VFull() { } VFull::VFull(unsigned int i, unsigned int h, unsigned int y, std::string p, std::string o) : id{i}, hash{h}, year{y}, ip{p}, organization{o} { } template<class Archive> void VFull::serialize(Archive &ar, const unsigned int version) { ar & 'i'; ar & id; ar & 'h'; ar & hash; ar & '1'; ar & ip; ar & '2'; ar & organization; ar & '3'; ar & year; ar & '/'; } /////// //EDGES EFull::EFull() { } template<class Archive> void EFull::serialize(Archive &ar, const unsigned int version) { char waste = 'e'; ar & waste; } /////// //GRAPH SIGNATURE template<class Archive> void GFull::serialize(Archive &ar, const unsigned int version) { std::string waste = "GBLS"; ar & waste; } /////// Yes, I am linking my source code to both BGL and Boost's serialization. This is acheived through this part of CMake script: find_package( Boost REQUIRED COMPONENTS graph serialization ) set(Boost_USE_STATIC_LIBS ON) set(Boost_USE_MULTITHREADED OFF) INCLUDE_DIRECTORIES( ${Boost_INCLUDE_DIRS} ..some other stuff..) TARGET_LINK_LIBRARIES(mycode ${Boost_LIBRARIES})

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[Boost.Hana] how to merge two or more maps
by Matthijs Möhlmann 25 Aug '16

25 Aug '16

Hi, I am looking into the documentation of hana to merge two or more maps, say: #include <boost/hana.hpp> namespace hana = boost::hana; int main(int argc, char **argv) { constexpr auto m1 = hana::make_map( hana::make_pair("key1"_s, hana::type_c<std::string>), hana::make_pair("key2"_s, hana::type_c<std::string>) ); constexpr auto m2 = hana::make_map( hana::make_pair("key3"_s, hana::type_c<std::string>), hana::make_pair("key4"_s, hana::type_c<std::string>), hana::make_pair("key5"_s, hana::type_c<std::string>) ); // Merge two or more maps? constexpr auto result = m1 + m2; return 0; } I'm not sure how to do this, probably taking the first map and for every pair in the subsequent map return an insert? In pseudo code: constexpr result = hana::insert(hana::insert(m1, pair1), pair2); Can someone give me some pointers in the right direction? Regards, Matthijs

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Fw: Boost-users Digest, Vol 4543, Issue 1
by David Frank 24 Aug '16

24 Aug '16

Thanks Daniel. I go the following errors and some segmentation fault. Is there any additional option to set:? ...skipped <pstage/lib>libboost_wave.so.1.61.0 for lack of <pbin.v2/libs/wave/build/clang-linux-3.6.2/release/threading-multi>libboost_wave.so.1.61.0... ...skipped <pstage/lib>libboost_wave.so for lack of <pstage/lib>libboost_wave.so.1.61.0... ...failed updating 518 targets... ...skipped 170 targets... ...updated 432 targets... On Wednesday, August 24, 2016 12:40 PM, David Frank <david_frank56(a)yahoo.com> wrote: On Wednesday, August 24, 2016 12:00 PM, "boost-users-request(a)lists.boost.org" <boost-users-request(a)lists.boost.org> wrote: Send Boost-users mailing list submissions to boost-users(a)lists.boost.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.boost.org/mailman/listinfo.cgi/boost-users or, via email, send a message with subject or body 'help' to boost-users-request(a)lists.boost.org You can reach the person managing the list at boost-users-owner(a)lists.boost.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Boost-users digest..." Today's Topics: 1. compile boost and boost application with CLANG compiler (David Frank) 2. Re: compile boost and boost application with CLANG compiler (Daniel Hofmann) 3. [Boost.Hana] how to merge two or more maps (Matthijs M?hlmann) 4. [test] Init framework before dataset generation (Florian Lindner) ---------------------------------------------------------------------- Message: 1 Date: Tue, 23 Aug 2016 18:06:42 +0000 (UTC) From: David Frank <david_frank56(a)yahoo.com> To: "boost-users(a)lists.boost.org" <boost-users(a)lists.boost.org> Subject: [Boost-users] compile boost and boost application with CLANG compiler Message-ID: <14791342.1048154.1471975602912(a)mail.yahoo.com> Content-Type: text/plain; charset="utf-8" Has anyone successfully compiled boost and application with boost with CLANG compiler?If yes, would you mind sharing the steps?

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compile boost and boost application with CLANG compiler
by David Frank 23 Aug '16

23 Aug '16

Has anyone successfully compiled boost and application with boost with CLANG compiler?If yes, would you mind sharing the steps?

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Boost Asio SSL can't receive without sending
by 刘焕杰 23 Aug '16

23 Aug '16

Hi, I am using Boost Asio to developed a server, with SSL support. I add async_read_some() function in handshake handler and send handler. Which receiving is OK if I send something to clients, but I can't keep receiving after I stop sending things to client. So I am wondering how can I keep receiving, I know there must be a way to make it, I am new to Asio, can someone help, thanks in advance. ------------------ I won't go

4 4

[type_erasure] use of typeid_of with reference any
by Joaquin M López Muñoz 23 Aug '16

23 Aug '16

Boost.TypeErasure docs say template<typename Concept, typename T> const std::type_info & typeid_of(const any< Concept, T > & arg); [...] Requires: Concept includes typeid_<T>. T is a non-reference, CV-unqualified placeholder. which, if my literal reading is right, means that you can't use typeid_of on, say, any<typeid_<>,_self&>, yet the following compiles on GCC #include <boost/type_erasure/any.hpp> #include <boost/type_erasure/builtin.hpp> #include <boost/type_erasure/typeid_of.hpp> #include <iostream> using namespace boost::type_erasure; int main() { int x=0; any<boost::mpl::vector<typeid_<>,relaxed>,_self&> a=x; std::cout<<typeid_of(a).name()<<"\n"; } and correctly outputs the name of the "int" type. Is this a bug in the docs or am I missing something? Thank you, Joaquín M López Muñoz

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How to build Boost agianst specific version of openSSL
by ramonpadilla1＠yahoo.co.uk 22 Aug '16

22 Aug '16

My machine is a Mac with OS X El Capitan installed.Using Homebrew I have installed openssl 1.0.2h_1 but it does not allow it to be linked to usr/local.openssl version -a returns:OpenSSL 0.9.8zh 14 Jan 2016 built on: Feb 4 2016 platform: darwin64-x86_64-llvm options: bn(64,64) md2(int) rc4(ptr,char) des(idx,cisc,16,int) blowfish(idx) compiler: -arch x86_64 -fmessage-length=0 -pipe -Wno-trigraphs -fpascal-strings -fasm-blocks -O3 -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DL_ENDIAN -DMD32_REG_T=int -DOPENSSL_NO_IDEA -DOPENSSL_PIC -DOPENSSL_THREADS -DZLIB -mmacosx-version-min=10.6 OPENSSLDIR: "/System/Library/OpenSSL"which openssl returns /usr/bin/openssl.I want to build Boost but I understand from the answer posted to this question that Boost will use the openssl version provided by the system.How do I force the boost build to use the version of openssl I have installed via Homebrew?

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Re: [Boost-users] Boost Asio SSL can't receive without sending
by 刘焕杰 22 Aug '16

22 Aug '16

Hi Radu, yes, I have called run() on the ioservice. And I still can't figure out why, do I need to keep sending things to client? Thanks for reply. ------------------ jenenliu ------------------ Original ------------------ From: "Radu Andrei Nedelcu";<radu(a)disruptive.engineering>; Date: Fri, Aug 19, 2016 11:35 PM To: "boost-users(a)lists.boost.org"<boost-users(a)lists.boost.org>; Subject: Re: [Boost-users] Boost Asio SSL can't receive without sending Are you calling run( ) on the ioservice ( boost::asio::io_service ) ? Radu From: Boost-users [mailto:boost-users-bounces@lists.boost.org] On Behalf Of ??? Sent: 19 August 2016 07:57 To: boost-users <boost-users(a)lists.boost.org> Subject: [Boost-users] Boost Asio SSL can't receive without sending Hi, I am using Boost Asio to developed a server, with SSL support. I add async_read_some() function in handshake handler and send handler. Which receiving is OK if I send something to clients, but I can't keep receiving after I stop sending things to client. So I am wondering how can I keep receiving, I know there must be a way to make it, I am new to Asio, can someone help, thanks in advance. ------------------ I won't go

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[math] Undefined reference to promote_args
by Florian Lindner 18 Aug '16

18 Aug '16

Hello, when compiling a file that uses float_distance from #include <boost/math/special_functions/relative_difference.hpp> I get a linking error: undefined reference to `boost::math::tools::promote_args<double, double, float, float, float, float>::type boost::math::float_distance<double, double>(double const&, double const&)' I try to add all boost_math libs I could find, but none helped: -lboost_system -lboost_filesystem -lboost_math_tr1 -lboost_math_c99 -lboost_math_c99 Since float_distance is not a C99 / TR1 function, should'nt boost.math work as header only? What is the problem here? Thanks, Florian

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Custom build of Python3 not picked up by Boost.Build
by Matthieu Brucher 17 Aug '16

17 Aug '16

Hi, As I need a build of Python3 compatible with VS2012, I built it from scratch and installed it in a _INSTALL folder, following a tutorial online. Now, I want to use that Python3 with Boost.Python, so I did this in my use-config.jam: using python : 3.4 : D:/Tools/Python-3.4.5/_INSTALL/python.exe : D:/Tools/Python-3.4.5/_INSTALL/include : D:/Tools/Python-3.4.5/_INSTALL/libs ; And then: .\bootstrap.bat --with-python=D:\Tools\Python-3.4.5\_INSTALL --with-python-version=3.4 --python-buildid=3 which failed. The includes are found properly, but the link is floawed: LINK : fatal error LNK1104: cannot open file 'python34.lib' The library is in D:/Tools/Python-3.4.5/_INSTALL/libs, but could not be found according to the log. Also, something strange: D:\Tools\boost_1_60_0\tools\build\src\engine>.\bootstrap\jam0 -f build.jam --toolset=vc14 "--toolset-root=C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\Tools\..\..\VC\ " --with-python=D:\Tools\Python-3.4.5\_INSTALL --with-python-version=3.4 --python-buildid=3 The retrieved toolset is wrong, as explicitely asked for VS2012 aka 11.0 int he user-config.jam and I'm running it from a VS2012 x64 native tools command prompt. Couldn't find any help online, so the best is to ask the Boost community! Regards, Matthieu -- Information System Engineer, Ph.D. Blog: http://blog.audio-tk.com/ LinkedIn: http://www.linkedin.com/in/matthieubrucher

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Re: [Boost-users] Boost-users Digest, Vol 4538, Issue 1
by David Frank 17 Aug '16

17 Aug '16

Galvin,that was reported when boost version 61 was used, and the application was compiled with g++ version 5.21 with options CFLAGS += -fsanitize=alignment CFLAGS += -fsanitize=object-size CFLAGS += -fsanitize=vptr Thanks, David. On Tuesday, August 16, 2016 7:39 AM, "boost-users-request(a)lists.boost.org" <boost-users-request(a)lists.boost.org> wrote: Send Boost-users mailing list submissions to boost-users(a)lists.boost.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.boost.org/mailman/listinfo.cgi/boost-users or, via email, send a message with subject or body 'help' to boost-users-request(a)lists.boost.org You can reach the person managing the list at boost-users-owner(a)lists.boost.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Boost-users digest..." Today's Topics: 1. Re: some runtime errors in shared_count.hpp (Gavin Lambert) 2. [boost][multiprecision] compile error with gcc 4.8.4 (Rob Conde) 3. [property_tree] - unsuppressed warning under VS2015 Update 3 (Tamas.Ruszkai(a)leica-geosystems.com) 4. Re: [boost][multiprecision] compile error with gcc 4.8.4 (John Maddock) 5. Custom build of Python3 not picked up by Boost.Build (Matthieu Brucher) ---------------------------------------------------------------------- Message: 1 Date: Tue, 16 Aug 2016 11:21:20 +1200 From: Gavin Lambert <gavinl(a)compacsort.com> To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] some runtime errors in shared_count.hpp Message-ID: <notipk$ak9$1(a)blaine.gmane.org> Content-Type: text/plain; charset=windows-1252; format=flowed On 15/08/2016 23:04, David Frank wrote: > boost/smart_ptr/detail/shared_count.hpp:484:41: runtime error: member > call on address 0x0000055807b0 which does not point to an object of type > 'sp_counted_base' > 0x0000055807b0: note: object is of type > 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>' > 00 00 00 00 10 82 bd b4 c1 7f 00 00 01 00 00 00 01 00 00 00 c0 29 5a > 05 00 00 00 00 41 00 00 00 > ^~~~~~~~~~~~~~~~~~~~~~~ Given that sp_counted_base is a base class of sp_counted_impl_p<>, I'm inclined to think that whatever is reporting that is confused. It's also useless to make a post like this without specifying what version of Boost you are using and which tool is reporting these errors. ------------------------------ Message: 2 Date: Tue, 16 Aug 2016 00:59:24 +0000 From: Rob Conde <rob.conde(a)ai-solutions.com> To: "boost-users(a)lists.boost.org" <boost-users(a)lists.boost.org> Subject: [Boost-users] [boost][multiprecision] compile error with gcc 4.8.4 Message-ID: <BN3PR0801MB23065F715AE0B9931115AE27C8130(a)BN3PR0801MB2306.namprd08.prod.outlook.com> Content-Type: text/plain; charset="windows-1252" Please see the scenario below...am I doing something wrong or is this a gcc or multiprecision bug? Thanks, Rob Conde given the following code (multiPrecisionTest.cpp): #include <boost/multiprecision/cpp_int.hpp> #include <boost/multiprecision/cpp_bin_float.hpp> typedef boost::multiprecision::int128_t int128_t; typedef boost::multiprecision::cpp_bin_float_quad float128_t; int main() { int128_t intVal; float128_t floatVal(intVal.convert_to<float128_t>()); return 0; } -------------------------------------------------------------------------- g++ -std=c++0x -c multiPrecisionTest.cpp I get the following error: In file included from ./boost/multiprecision/cpp_int.hpp:1936:0, from multiPrecisionTest.cpp:1: ./boost/multiprecision/cpp_int/misc.hpp: In instantiation of ?typename boost::enable_if_c<(boost::multiprecision::backends::is_trivial_cpp_int<boost::multiprecision::backends::cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value && boost::multiprecision::is_signed_number<boost::multiprecision::backends::cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value)>::type boost::multiprecision::backends::eval_convert_to(R*, const boost::multiprecision::backends::cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>&) [with R = boost::multiprecision::number<boost::multiprecision::backends::cpp_bin_float<113u, (boost::multiprecision::backends::digit_base_type)2u, void, short int, -16382, 16383>, (boost::multiprecision::expression_template_option)0u>; unsigned int MinBits1 = 128u; unsigned int MaxBits1 = 128u; boost::multiprecision::cpp_integer_type SignType1 = (boost::multiprecision::cpp_integer_type)1u; boost::multiprecis ion::cpp_int_check_type Checked1 = (boost::multiprecision::cpp_int_check_type)0u; Allocator1 = void; typename boost::enable_if_c<(boost::multiprecision::backends::is_trivial_cpp_int<boost::multiprecision::backends::cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value && boost::multiprecision::is_signed_number<boost::multiprecision::backends::cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value)>::type = void]?: ./boost/multiprecision/number.hpp:585:40: required from ?void boost::multiprecision::number<Backend, ExpressionTemplates>::convert_to_imp(T*) const [with T = boost::multiprecision::number<boost::multiprecision::backends::cpp_bin_float<113u, (boost::multiprecision::backends::digit_base_type)2u, void, short int, -16382, 16383>, (boost::multiprecision::expression_template_option)0u>; Backend = boost::multiprecision::backends::cpp_int_backend<128u, 128u, (boost::multiprecision::cpp_integer_type)1u, (boost::multiprecision::cpp_int_check_type)0u, void>; boost::multiprecision::expression_template_option ExpressionTemplates = (boost::multiprecision::expression_template_option)0u]? ./boost/multiprecision/number.hpp:601:29: required from ?T boost::multiprecision::number<Backend, ExpressionTemplates>::convert_to() const [with T = boost::multiprecision::number<boost::multiprecision::backends::cpp_bin_float<113u, (boost::multiprecision::backends::digit_base_type)2u, void, short int, -16382, 16383>, (boost::multiprecision::expression_template_option)0u>; Backend = boost::multiprecision::backends::cpp_int_backend<128u, 128u, (boost::multiprecision::cpp_integer_type)1u, (boost::multiprecision::cpp_int_check_type)0u, void>; boost::multiprecision::expression_template_option ExpressionTemplates = (boost::multiprecision::expression_template_option)0u]? multiPrecisionTest.cpp:10:54: required from here ./boost/multiprecision/cpp_int/misc.hpp:533:138: error: no type named ?type? in ?struct boost::common_type<boost::multiprecision::number<boost::multiprecision::backends::cpp_bin_float<113u, (boost::multiprecision::backends::digit_base_type)2u, void, short int, -16382, 16383>, (boost::multiprecision::expression_template_option)0u>, __int128 unsigned>? typedef typename common_type<R, typename cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>::local_limb_type>::type common_type; ^

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[property_tree] - unsuppressed warning under VS2015 Update 3
by Tamas.Ruszkai＠leica-geosystems.com 16 Aug '16

16 Aug '16

1 0

some runtime errors in shared_count.hpp
by David Frank 15 Aug '16

15 Aug '16

boost/smart_ptr/detail/shared_count.hpp:484:41: runtime error: member call on address 0x0000055807b0 which does not point to an object of type 'sp_counted_base' 0x0000055807b0: note: object is of type 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>' 00 00 00 00 10 82 bd b4 c1 7f 00 00 01 00 00 00 01 00 00 00 c0 29 5a 05 00 00 00 00 41 00 00 00 ^~~~~~~~~~~~~~~~~~~~~~~ vptr for 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>' boost/smart_ptr/detail/shared_count.hpp:625:43: runtime error: member call on address 0x0000055807b0 which does not point to an object of type 'sp_counted_base' 0x0000055807b0: note: object is of type 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>' 00 00 00 00 10 82 bd b4 c1 7f 00 00 02 00 00 00 01 00 00 00 c0 29 5a 05 00 00 00 00 41 00 00 00 ^~~~~~~~~~~~~~~~~~~~~~~ vptr for 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>' boost/smart_ptr/detail/shared_count.hpp:473:36: runtime error: member call on address 0x0000055807b0 which does not point to an object of type 'sp_counted_base' 0x0000055807b0: note: object is of type 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>' 00 00 00 00 10 82 bd b4 c1 7f 00 00 02 00 00 00 02 00 00 00 c0 29 5a 05 00 00 00 00 41 00 00 00 ^~~~~~~~~~~~~~~~~~~~~~~ vptr for 'boost::detail::sp_counted_impl_p<boost::detail::thread_data_base>'

2 1

[MSM] templated state machine generates many errors when a state is derived from msm::front::exit_pseudo_state<event>
by Richard Hodges 15 Aug '16

15 Aug '16

I just wanted to check that there was not something obvious I am doing wrong here: relevant parts: the exit state (defined outside the state machine) struct QueryGood { QueryGood(query_complete const& r) : result(r.result) {} // note: universal converting constructor template<class T> QueryGood(const T&) {} pkt result; }; template<class Environment> struct dns_query_ : msm::front::state_machine_def<dns_query_<Environment>> { // error happens when I derive from exit_pseudo_state. deriving from msmf::state<> eliminates all errors struct Complete : msm::front::exit_pseudo_state<QueryGood> // msmf::state<> { ... }; ... // transition table: struct transition_table : mpl::vector< // Start Event Next Action Guard // +--------------+---------------------+--------------+---------------------+----------------------+ msmf::Row < NotStarted , RestartQuery , Querying , msmf::none , msmf::none >, msmf::Row < Complete , RestartQuery , Querying , msmf::none , msmf::none >, msmf::Row < Error , RestartQuery , Querying , msmf::none , msmf::none >, msmf::Row < Querying , query_timeout , Error , NotifyUpdate , IsCurrentEvent >, msmf::Row < Querying , RestartQuery , Querying , msmf::none , msmf::none >, msmf::Row < Querying , query_error , Error , NotifyUpdate , IsCurrentEvent >, msmf::Row < Querying , query_complete , Complete , NotifyUpdate , IsCurrentEvent > // +--------------+---------------------+--------------+---------------------+----------------------+ > {}; }; sample of errors: /Users/rhodges/secr/xcode-secr/target_local/include/boost/msm/back/metafunctions.hpp:578:79: error: no type named 'owner' in 'secr::wrapldns::dns_query_<query_host>::Complete' typename ::boost::mpl::not_<typename ::boost::is_same<typename State::owner, ~~~~~~~~~~~~~~~~^~~~~ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/include/secr/wrapldns/query_feed.hpp:5: In file included from /Users/rhodges/secr/secr/valuelib/debug/include/valuelib/debug/trace.hpp:23: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/trivial.hpp:21: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/keywords/severity.hpp:18: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/keyword.hpp:9: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/unwrap_cv_reference.hpp:12: /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/eval_if.hpp:38:22: note: in instantiation of template class 'boost::msm::back::get_owner<secr::wrapldns::dns_query_<query_host>::Complete, boost::msm::back::state_machine<secr::wrapldns::dns_query_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_> >' requested here typedef typename f_::type type; ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:6: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/stale_timer.hpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/config.hpp:5: /Users/rhodges/secr/xcode-secr/target_local/include/boost/msm/back/state_machine.hpp:630:40: note: in instantiation of template class 'boost::mpl::eval_if<mpl_::bool_<true>, boost::msm::back::get_owner<secr::wrapldns::dns_query_<query_host>::Complete, boost::msm::back::state_machine<secr::wrapldns::dns_query_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_> >, boost::mpl::identity<secr::wrapldns::dns_query_<query_host>::Complete> >' requested here typedef typename ::boost::mpl::eval_if< ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:6: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/stale_timer.hpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/config.hpp:5: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/msm/back/state_machine.hpp:59: /Users/rhodges/secr/xcode-secr/target_local/include/boost/msm/back/metafunctions.hpp:85:22: note: in instantiation of template class 'boost::msm::back::state_machine<secr::wrapldns::dns_query_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::_row_<boost::msm::front::Row<secr::wrapldns::dns_query_<query_host>::Complete, secr::wrapldns::RestartQuery, secr::wrapldns::dns_query_<query_host>::Querying, boost::msm::front::none, boost::msm::front::none> >' requested here typedef typename Transition::current_state_type type; ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/include/secr/wrapldns/query_feed.hpp:5: In file included from /Users/rhodges/secr/secr/valuelib/debug/include/valuelib/debug/trace.hpp:23: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/trivial.hpp:21: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/keywords/severity.hpp:18: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/keyword.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tag.hpp:8: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tagged_argument.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/arg_list.hpp:17: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/apply.hpp:25: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/lambda.hpp:22: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/full_lambda.hpp:25: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/quote.hpp:23: /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/has_type.hpp:20:1: note: in instantiation of template class 'boost::msm::back::transition_source_type<boost::msm::back::state_machine<secr::wrapldns::dns_query_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::_row_<boost::msm::front::Row<secr::wrapldns::dns_query_<query_host>::Complete, secr::wrapldns::RestartQuery, secr::wrapldns::dns_query_<query_host>::Querying, boost::msm::front::none, boost::msm::front::none> > >' requested here BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_type, type, true) ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/include/secr/wrapldns/query_feed.hpp:5: In file included from /Users/rhodges/secr/secr/valuelib/debug/include/valuelib/debug/trace.hpp:23: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/trivial.hpp:21: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/keywords/severity.hpp:18: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/keyword.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tag.hpp:8: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tagged_argument.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/arg_list.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/result_of0.hpp:7: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/utility/result_of.hpp:21: /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/has_xxx.hpp:245:65: note: expanded from macro 'BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF' , boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME U::name>* = 0 \ ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/include/secr/wrapldns/query_feed.hpp:5: In file included from /Users/rhodges/secr/secr/valuelib/debug/include/valuelib/debug/trace.hpp:23: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/trivial.hpp:21: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/keywords/severity.hpp:18: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/keyword.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tag.hpp:8: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tagged_argument.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/arg_list.hpp:17: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/apply.hpp:25: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/lambda.hpp:22: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/full_lambda.hpp:25: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/quote.hpp:23: /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/has_type.hpp:20:1: note: while substituting deduced template arguments into function template 'test' [with U = boost::msm::back::transition_source_type<boost::msm::back::state_machine<secr::wrapldns::dns_query_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::_row_<boost::msm::front::Row<secr::wrapldns::dns_query_<query_host>::Complete, secr::wrapldns::RestartQuery, secr::wrapldns::dns_query_<query_host>::Querying, boost::msm::front::none, boost::msm::front::none> > >] In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/include/secr/wrapldns/query_feed.hpp:5: In file included from /Users/rhodges/secr/secr/valuelib/debug/include/valuelib/debug/trace.hpp:23: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/trivial.hpp:21: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/keywords/severity.hpp:18: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/keyword.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tag.hpp:8: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tagged_argument.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/arg_list.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/result_of0.hpp:7: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/utility/result_of.hpp:21: /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/has_xxx.hpp:253:18: note: expanded from macro 'BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF' sizeof(gcc_3_2_wknd::test(static_cast<t_*>(0))) \ ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/include/secr/wrapldns/query_feed.hpp:5: In file included from /Users/rhodges/secr/secr/valuelib/debug/include/valuelib/debug/trace.hpp:23: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/trivial.hpp:21: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/log/keywords/severity.hpp:18: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/keyword.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tag.hpp:8: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/tagged_argument.hpp:10: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/aux_/arg_list.hpp:17: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/apply.hpp:25: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/lambda.hpp:22: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/full_lambda.hpp:25: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/quote.hpp:45: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/include_preprocessed.hpp:37: /Users/rhodges/secr/xcode-secr/target_local/include/boost/mpl/aux_/preprocessed/gcc/quote.hpp:36:20: note: (skipping 36 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) , aux::has_type< F<U1> >::value ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:6: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/stale_timer.hpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/config.hpp:5: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/msm/back/state_machine.hpp:53: In file included from /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter.hpp:11: /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/parameters.hpp:585:24: note: in instantiation of template class 'boost::parameter::aux::make_arg_list_aux<boost::parameter::aux::item<boost::parameter::required<boost::msm::back::tag::front_end, boost::parameter::aux::use_default>, secr::wrapldns::query_wrapper_<query_host>, boost::parameter::void_>, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::history_policy>, has_history_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::compile_policy>, has_compile_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::fsm_check_policy>, has_fsm_check<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::queue_container_policy>, has_queue_container_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::void_> > > >, boost::parameter::aux::tag_template_keyword_arg, mpl_::bool_<true>, boost::mpl::set0<mpl_::na>, boost::parameter::aux::empty_arg_list, boost::parameter::void_>' requested here typedef typename make_arg_list_aux< ^ /Users/rhodges/secr/xcode-secr/target_local/include/boost/parameter/parameters.hpp:817:31: note: in instantiation of template class 'boost::parameter::aux::make_arg_list<boost::parameter::aux::item<boost::parameter::required<boost::msm::back::tag::front_end, boost::parameter::aux::use_default>, secr::wrapldns::query_wrapper_<query_host>, boost::parameter::void_>, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::history_policy>, has_history_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::compile_policy>, has_compile_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::fsm_check_policy>, has_fsm_check<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::aux::deduced_item<boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::queue_container_policy>, has_queue_container_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::void_> > > >, boost::parameter::aux::tag_template_keyword_arg, mpl_::bool_<true> >' requested here typedef typename aux::make_arg_list< ^ In file included from /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:6: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/stale_timer.hpp:3: In file included from /Users/rhodges/secr/secr/wrapldns/src/sm/config.hpp:5: /Users/rhodges/secr/xcode-secr/target_local/include/boost/msm/back/state_machine.hpp:150:47: note: in instantiation of template class 'boost::parameter::parameters<boost::parameter::required<boost::msm::back::tag::front_end, boost::parameter::aux::use_default>, boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::history_policy>, has_history_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::compile_policy>, has_compile_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::fsm_check_policy>, has_fsm_check<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::optional<boost::parameter::deduced<boost::msm::back::tag::queue_container_policy>, has_queue_container_policy<mpl_::arg<-1>, mpl_::bool_<false> > >, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>::bind<secr::wrapldns::query_wrapper_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>' requested here typename state_machine_signature::bind<A0,A1,A2,A3,A4>::type, ::boost::msm::back::tag::front_end ^ /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:123:24: note: in instantiation of template class 'boost::msm::back::state_machine<secr::wrapldns::query_wrapper_<query_host>, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_, boost::parameter::void_>' requested here state_machine_type _state_machine; ^ /Users/rhodges/secr/secr/wrapldns/tests/test_query_algo.cpp:362:3: note: in instantiation of template class 'has_state_machine<query_host, secr::wrapldns::query_wrapper>' requested here : has_state_machine<query_host, secr::wrapldns::query_wrapper> ^

2 1

Boost Units initialize quantity with signaling NaN
by Belcourt, Kenneth 13 Aug '16

13 Aug '16

Hi, I’m trying to find a way to initialize a Boost Unit with a signaling NaN, not just a NaN with the signal cleared. It seems that the only way to initialize a quantity is by multiplying by the unit, and that multiplication clears the signal on the NaN. I know I can just modify the quantity.hpp header and initialize the default constructor val_ member with the signaling NaN, but I was hoping for a cleaner solution. Here’s an example (typed in by hand, not tested): const double s_nan = std::numeric_limits<double>::signaling_NaN(); typedef quantity<si::acceleration, double> acceleration_t; BOOST_UNITS_STATIC_CONSTANT(acceleration_u, acceleration); acceleration_t a(s_nan * acceleration_u); // <— this clears the signal on the NaN Has anyone encountered this or know of a more elegant solution than modifying the quantity.hpp header? — Noel

2 3

[Wave] Wave samples and driver utility not building?
by Michael Young 12 Aug '16

12 Aug '16

I have just built boost_1_61_0; I am particularly interested in Boost.Wave at this time. This is my first attempt to build any boost library, or boost in its entirety (all libs). I read and followed the build instructions from the web site, with slight modifications for my environment / purposes: bootstrap.sh 2>&1 | tee build_boost_log.txt sudo ./b2 install 2>&1 | tee -a build_boost_log.txt When it completes, I get the libboost_*.a and .so files in /usr/local/lib, and the source is installed at /usr/local/include/boost, as expected. I do get "...failed updating 58 targets..." in the build output, but my understanding is that's OK - I didn't install optional items like ICU and such. The problem is that I can't find the wave driver (or other sample) utility anywhere. Moreover, when I look at the build log, there is no indication that any of these are being built (even attempted). So I'm wondering if there's a build step / option that I am missing (and/or perhaps I need one of the "optional" 3rd party packages installed?). BTW - I'm building in Ubuntu 14.04 ARM (crouton chroot on Chromebook), with gcc/g++ 4.8.4. I didn't see any indication of any environment problems in the build log.

2 1

[Asio] Making custom std::streambuf for async_read
by knarks＠online.de 11 Aug '16

11 Aug '16

At the moment I'm using async_read with boost::asio::streambuf and this works fine but I need a custom stream where every invoke to async_read appends the data to my stream. The stream should be based on std::streambuf because I want to keep the asio interface hidden to the user. My first idea was to search for the problem and I ended up with reading about MutableBufferSequence but I don't know if this is the right way and how to implement this in my streambuf object. Any help is higly appreciated.

2 4

Re: [Boost-users] [spirit][karma] multiprecision modf
by Daniel Brake 08 Aug '16

08 Aug '16

Thanks for the reply, John. I think for now I will simply use the .str() method for mpfr_float, since my policies for printing numbers need the entire number (or really, some portion of the number which is known at runtime, but not necessarily at compile time). Any help from the Boost.Spirit people on connecting Boost.Multiprecision variable-precision types would be swell. I am happy to help with this. I already use Spirit.Qi for parsing, and love it, so really want to be able to use Karma in full, as well. Thanks, Daniel > > ---------- Forwarded message ---------- > From: John Maddock <jz.maddock(a)googlemail.com> > To: boost-users(a)lists.boost.org > Cc: > Date: Wed, 3 Aug 2016 18:14:05 +0100 > Subject: Re: [Boost-users] [spirit][karma] multiprecision modf > > Here's the new error message: >> >> In file included from test/generating/mpfr_float.cpp:27: >> In file included from ./include/bertini2/io/generators.hpp:44: >> In file included from /usr/local/include/boost/spiri >> t/include/karma.hpp:16: >> In file included from /usr/local/include/boost/spirit/home/karma.hpp:15: >> In file included from /usr/local/include/boost/spiri >> t/home/karma/numeric.hpp:16: >> In file included from /usr/local/include/boost/spiri >> t/home/karma/numeric/real.hpp:32: >> /usr/local/include/boost/spirit/home/karma/numeric/real_policies.hpp:263:39: >> error: incompatible operand types ('int' and 'typename >> enable_if_c<number_category<detail::expression<function, >> log10_funct<mpfr_float_backend<0, allocate_dynamic> >, >> number<mpfr_float_backend<0, >> allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, >> void, void> >::value == number_kind_floating_point, >> detail::expression<detail::function, detail::floor_funct<typename >> detail::backend_type<detail::expression<function, >> log10_funct<mpfr_float_backend<0, allocate_dynamic> >, >> number<mpfr_float_backend<0, allocate_dynamic>, >> boost::multiprecision::expression_template_option::et_on>, void, void> >> >::type>, detail::expression<function, log10_funct<mpfr_float_backend<0, >> allocate_dynamic> >, number<mpfr_float_backend<0, >> allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, >> void, void> > >> >::type' (aka 'boost::multiprecision::detail >> ::expression<boost::multiprecision::detail::function, >> boost::multiprecision::detail::floor_funct<boost::multipreci >> sion::backends::mpfr_float_backend<0, allocate_dynamic> >, >> boost::multiprecision::detail::expression<boost::multiprecis >> ion::detail::function, >> boost::multiprecision::detail::log10_funct<boost::multipreci >> sion::backends::mpfr_float_backend<0, allocate_dynamic> >, >> boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, >> allocate_dynamic>, >> boost::multiprecision::expression_template_option::et_on>, void, void>, >> void, void>')) >> (traits::test_zero(n) ? 0 : floor(log10(n))) + 1; >> > > I'm afraid that code is incompatible with expression templates: the two > halves of the conditional expression have different/unrelated types which > aren't convertible to each other. An explicit cast is needed here to make > the code expression-template compatible. Or else use a number type with > expression templates turned off. Suggest you contact the spirit developers > (they have their own mailing list I believe) and see what their intent is > here. > > As a last question, I am unsure about the use of the a function parameter >> in my specialization BertiniNumPolicy<mpfr_float>, particularly the >> precision(mpfr_float) function. In the documentation and examples I have >> seen for specializations, this function doesn't use the argument. Is it ok >> that it does, that it checks the actual precision of x??? See above code. >> An alternate method for me might be to just use the str() method provided >> by the number<...> from Multiprecision, but it seems like since this type >> is numeric, I'd like to be able to generate using the numeric generators >> from Karma. >> > > That looks to be the intent yes. Note however, that it's a conceptual > requirement of karma that the number have numeric_limits specialized - > that's not true for type mpfr_float since most of the fields would have to > vary at runtime which isn't possible for numeric_limits. Technically we > could provide a specialization that defines the members that are constant > and leaves the others as undefined/zero/infinity, but it's not clear what's > the right thing to do here - numeric_limits wasn't designed for this kind > of type it seems :( > > I'm changing the subject line to include spirit/karma in hopes that their > developers will see this and chip in.... we should really find a way to > make the libraries work better together. > > HTH, John. > > > > ---------- Forwarded message ---------- > From: Gavin Lambert <gavinl(a)compacsort.com> > To: boost-users(a)lists.boost.org > Cc: > Date: Thu, 4 Aug 2016 16:05:12 +1200 > Subject: Re: [Boost-users] boost::serialization::array for Orocos RTT > On 3/08/2016 23:29, Sambeet Panigrahi wrote: > >> I gave the following includes >> #include <boost/serialization/array.hpp> >> #include <boost/array.hpp> >> >> I know boost::array exists,but does boost::serialization::array >> exist?Because in the namespace serialization in the >> boost/serialization/array.hpp, I could not find such a template. >> >> namespace boost { namespace serialization { >> > [...] > >> template<class T> >> class array_wrapper : >> public wrapper_traits<const array_wrapper< T > > >> > > Looks like it's called array_wrapper instead of array in your version. > > Which is odd, since you claimed to be using 1.44, and these say > differently: > > http://www.boost.org/doc/libs/1_44_0/boost/serialization/array.hpp > > > https://github.com/boostorg/serialization/blob/1b9dc31ba/inc > lude/boost/serialization/array.hpp > > If you obtained the Boost library from an SDK vendor instead of directly > from Boost, you should probably ask them why it is different. > > > > > > ---------- Forwarded message ---------- > From: "deneme.true" <deneme.true(a)gmail.com> > To: boost-users(a)lists.boost.org > Cc: > Date: Thu, 4 Aug 2016 10:40:22 +0300 > Subject: [Boost-users] Serialization error > Hello, > > I got following errors on 64 bit machine when I try to compile my > application. > > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl boost::archive::text_iarchive_impl<class > boost::archive::text_iarchive>::text_iarchive_impl<class > boost::archive::text_iarchive>(class std::basic_istream<char,struct > std::char_traits<char> > &,unsigned int)" > (??0?$text_iarchive_impl@Vtext_iarchive@archive@boost@@@archive@boost > @@IEAA@AEAV?$basic_istream@DU?$char_traits@D@std@@@std@@I@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl boost::archive::text_iarchive_impl<class > boost::archive::text_iarchive>::load_override(struct > boost::archive::class_name_type &)" > (?load_override@?$text_iarchive_impl@Vtext_iarchive@archive@boost > @@@archive@boost@@IEAAXAEAUclass_name_type@23@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl boost::archive::text_iarchive_impl<class > boost::archive::text_iarchive>::load(class > std::basic_string<char,struct std::char_traits<char>,class > std::allocator<char> > &)" > (?load@?$text_iarchive_impl@Vtext_iarchive@archive@boost@@@archive@boost > @@IEAAXAEAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@ > Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl boost::archive::basic_text_iprimitive<class > std::basic_istream<char,struct std::char_traits<char> > > >::~basic_text_iprimitive<class std::basic_istream<char,struct > std::char_traits<char> > >(void)" > (??1?$basic_text_iprimitive@V?$basic_istream@DU?$char_traits@D@std@@@std@ > @@archive@boost@@IEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl boost::archive::basic_text_oprimitive<class > std::basic_ostream<char,struct std::char_traits<char> > > >::~basic_text_oprimitive<class std::basic_ostream<char,struct > std::char_traits<char> > >(void)" > (??1?$basic_text_oprimitive@V?$basic_ostream@DU?$char_traits@D@std@@@std@ > @@archive@boost@@IEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl boost::archive::text_oarchive_impl<class > boost::archive::text_oarchive>::text_oarchive_impl<class > boost::archive::text_oarchive>(class std::basic_ostream<char,struct > std::char_traits<char> > &,unsigned int)" > (??0?$text_oarchive_impl@Vtext_oarchive@archive@boost@@@archive@boost > @@IEAA@AEAV?$basic_ostream@DU?$char_traits@D@std@@@std@@I@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl boost::archive::text_oarchive_impl<class > boost::archive::text_oarchive>::save(class > std::basic_string<char,struct std::char_traits<char>,class > std::allocator<char> > const &)" > (?save@?$text_oarchive_impl@Vtext_oarchive@archive@boost@@@archive@boost > @@IEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@ > Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: virtual __cdecl > boost::archive::detail::basic_iserializer::~basic_iserializer(void)" > (??1basic_iserializer@detail@archive@boost@@MEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl > boost::archive::detail::basic_iserializer::basic_iserializer(class > boost::serialization::extended_type_info const &)" > (??0basic_iserializer@detail@archive@boost@@IEAA@AEBVextended_type_info@ > serialization@3@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: virtual __cdecl > boost::archive::detail::basic_oserializer::~basic_oserializer(void)" > (??1basic_oserializer@detail@archive@boost@@MEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl > boost::archive::detail::basic_oserializer::basic_oserializer(class > boost::serialization::extended_type_info const &)" > (??0basic_oserializer@detail@archive@boost@@IEAA@AEBVextended_type_info@ > serialization@3@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: void __cdecl > boost::archive::detail::basic_iarchive::reset_object_address(void > const *,void const *)" > (?reset_object_address@basic_iarchive@detail@archive@boost@@QEAAXPEBX0@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: class boost::archive::library_version_type __cdecl > boost::archive::detail::basic_iarchive::get_library_version(void)const > " (?get_library_version@basic_iarchive@detail@archive@boost@ > @QEBA?AVlibrary_version_type@34@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: void __cdecl > boost::archive::detail::basic_iarchive::load_object(void *,class > boost::archive::detail::basic_iserializer const &)" > (?load_object@basic_iarchive@detail@archive@boost@@QEAAXPEAXAEBVbasic_ > iserializer@234@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: virtual __cdecl > boost::archive::detail::basic_iarchive::~basic_iarchive(void)" > (??1basic_iarchive@detail@archive@boost@@UEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: void __cdecl > boost::archive::detail::basic_oarchive::end_preamble(void)" > (?end_preamble@basic_oarchive@detail@archive@boost@@QEAAXXZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: void __cdecl > boost::archive::detail::basic_oarchive::save_object(void const *,class > boost::archive::detail::basic_oserializer const &)" > (?save_object@basic_oarchive@detail@archive@boost@@QEAAXPEBXAEBVbasic_ > oserializer@234@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: virtual __cdecl > boost::archive::detail::basic_oarchive::~basic_oarchive(void)" > (??1basic_oarchive@detail@archive@boost@@MEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl boost::archive::basic_text_oarchive<class > boost::archive::text_oarchive>::newtoken(void)" > (?newtoken@?$basic_text_oarchive@Vtext_oarchive@archive@boost > @@@archive@boost@@IEAAXXZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: virtual __cdecl > boost::archive::archive_exception::~archive_exception(void)" > (??1archive_exception@archive@boost@@UEAA@XZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: __cdecl > boost::archive::archive_exception::archive_exception(enum > boost::archive::archive_exception::_exception_code,char const *,char > const *)" (??0archive_exception@archive@boost@@QEAA@W4_exception_code@ > 012@PEBD1@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: __cdecl > boost::archive::archive_exception::archive_exception(class > boost::archive::archive_exception const &)" > (??0archive_exception@archive@boost@@QEAA@AEBV012@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: virtual bool __cdecl > boost::serialization::typeid_system::extended_type_info_ > typeid_0::is_equal(class > boost::serialization::extended_type_info const &)const " > (?is_equal@extended_type_info_typeid_0@typeid_system@serialization@boost > @@UEBA_NAEBVextended_type_info@34@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "public: virtual bool __cdecl > boost::serialization::typeid_system::extended_type_info_ > typeid_0::is_less_than(class > boost::serialization::extended_type_info const &)const " > (?is_less_than@extended_type_info_typeid_0@typeid_system@ > serialization@boost@@UEBA_NAEBVextended_type_info@34@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl > boost::serialization::typeid_system::extended_type_info_ > typeid_0::type_unregister(void)" > (?type_unregister@extended_type_info_typeid_0@typeid_system@serialization > @boost@@IEAAXXZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl > boost::serialization::typeid_system::extended_type_info_ > typeid_0::type_register(class > type_info const &)" > (?type_register@extended_type_info_typeid_0@typeid_system@ > serialization@boost@@IEAAXAEBVtype_info@@@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: virtual __cdecl > boost::serialization::typeid_system::extended_type_info_ > typeid_0::~extended_type_info_typeid_0(void)" > (??1extended_type_info_typeid_0@typeid_system@serialization@boost@@MEAA@XZ > ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: __cdecl > boost::serialization::typeid_system::extended_type_info_ > typeid_0::extended_type_info_typeid_0(char > const *)" (??0extended_type_info_typeid_0@typeid_system@serialization@ > boost@@IEAA@PEBD@Z) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl > boost::serialization::extended_type_info::key_register(void)const " > (?key_register@extended_type_info@serialization@boost@@IEBAXXZ) > 1>wxRememberme.obj : error LNK2001: unresolved external symbol > "protected: void __cdecl > boost::serialization::extended_type_info::key_unregister(void)const " > (?key_unregister@extended_type_info@serialization@boost@@IEBAXXZ) > 1>libeay32mt.lib(txt_db.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>libeay32mt.lib(ui_openssl.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>ssleay32mt.lib(s3_srvr.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>ssleay32mt.lib(t1_enc.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>ssleay32mt.lib(d1_both.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>libeay32mt.lib(cryptlib.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>libeay32mt.lib(pem_lib.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>libeay32mt.lib(e_capi.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>libeay32mt.lib(gost_eng.obj) : error LNK2001: unresolved external > symbol __iob_func > 1>libeay32mt.lib(cryptlib.obj) : error LNK2001: unresolved external > symbol _vsnwprintf > > My boost library compile parameter is: > > C:\boost_1_61_0>b2 install --prefix=C:\Boost1_61_0 address-model=64 > --build-dir= > C:\boost-build toolset=msvc-14.0 variant=debug,release link=static > threading=mul > ti runtime-link=static stage > > I am using serialization. > > Thanks in advance > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

1 0

Re: [Boost-users] boost::serialization::array for Orocos RTT
by Sambeet Panigrahi 05 Aug '16

05 Aug '16

Sir, I gave the following includes #include <boost/serialization/array.hpp> #include <boost/array.hpp> I know boost::array exists,but does boost::serialization::array exist?Because in the namespace serialization in the boost/serialization/array.hpp, I could not find such a template. namespace boost { namespace serialization { // traits to specify whether to use an optimized array serialization template <class Archive> struct use_array_optimization : boost::mpl::always<boost::mpl::false_> {}; template<class T> class array_wrapper : public wrapper_traits<const array_wrapper< T > > { private: array_wrapper & operator=(const array_wrapper & rhs); public: // note: I would like to make the copy constructor private but this breaks // make_array. So I try to make make_array a friend - but that doesn't // build. Need a C++ guru to explain this! template<class S> friend const boost::serialization::array_wrapper<T> make_array( T* t, S s); array_wrapper(const array_wrapper & rhs) : m_t(rhs.m_t), m_element_count(rhs.m_element_count) {} public: array_wrapper(T * t, std::size_t s) : m_t(t), m_element_count(s) {} // default implementation template<class Archive> void serialize_optimized(Archive &ar, const unsigned int, mpl::false_ ) const { // default implemention does the loop std::size_t c = count(); T * t = address(); while(0 < c--) ar & boost::serialization::make_nvp("item", *t++); } // optimized implementation template<class Archive> void serialize_optimized(Archive &ar, const unsigned int version, mpl::true_ ) { boost::serialization::split_member(ar, *this, version); } // default implementation template<class Archive> void save(Archive &ar, const unsigned int version) const { ar.save_array(*this,version); } // default implementation template<class Archive> void load(Archive &ar, const unsigned int version) { ar.load_array(*this,version); } // default implementation template<class Archive> void serialize(Archive &ar, const unsigned int version) { typedef typename boost::serialization::use_array_optimization<Archive>::template apply< typename remove_const< T >::type >::type use_optimized; serialize_optimized(ar,version,use_optimized()); } T * address() const { return m_t; } std::size_t count() const { return m_element_count; } private: T * const m_t; const std::size_t m_element_count; }; template<class T, class S> inline const array_wrapper< T > make_array( T* t, S s){ const array_wrapper< T > a(t, s); return a; } } } // end namespace boost::serialization // I can't figure out why BOOST_NO_CXX11_HDR_ARRAY // has been set for clang-11. So just make sure // it's reset now. Needs further research!!! #if defined(_LIBCPP_VERSION) #undef BOOST_NO_CXX11_HDR_ARRAY #endif #ifndef BOOST_NO_CXX11_HDR_ARRAY #include <array> namespace boost { namespace serialization { // implement serialization for std::array template <class Archive, class T, std::size_t N> void serialize(Archive& ar, std::array<T,N>& a, const unsigned int /* version */) { ar & boost::serialization::make_nvp( "elems", *static_cast<T (*)[N]>(static_cast<void *>(a.data())) ); } } } // end namespace boost::serialization #endif

2 2

Serialization error
by deneme.true 04 Aug '16

04 Aug '16

Hello, I got following errors on 64 bit machine when I try to compile my application. 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::archive::text_iarchive_impl<class boost::archive::text_iarchive>::text_iarchive_impl<class boost::archive::text_iarchive>(class std::basic_istream<char,struct std::char_traits<char> > &,unsigned int)" (??0?$text_iarchive_impl@Vtext_iarchive@archive@boost@@@archive@boost@@IEAA@AEAV?$basic_istream@DU?$char_traits@D@std@@@std@@I@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::archive::text_iarchive_impl<class boost::archive::text_iarchive>::load_override(struct boost::archive::class_name_type &)" (?load_override@?$text_iarchive_impl@Vtext_iarchive@archive@boost@@@archive@boost@@IEAAXAEAUclass_name_type@23@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::archive::text_iarchive_impl<class boost::archive::text_iarchive>::load(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > &)" (?load@?$text_iarchive_impl@Vtext_iarchive@archive@boost@@@archive@boost@@IEAAXAEAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::archive::basic_text_iprimitive<class std::basic_istream<char,struct std::char_traits<char> > >::~basic_text_iprimitive<class std::basic_istream<char,struct std::char_traits<char> > >(void)" (??1?$basic_text_iprimitive@V?$basic_istream@DU?$char_traits@D@std@@@std@@@archive@boost@@IEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::archive::basic_text_oprimitive<class std::basic_ostream<char,struct std::char_traits<char> > >::~basic_text_oprimitive<class std::basic_ostream<char,struct std::char_traits<char> > >(void)" (??1?$basic_text_oprimitive@V?$basic_ostream@DU?$char_traits@D@std@@@std@@@archive@boost@@IEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::archive::text_oarchive_impl<class boost::archive::text_oarchive>::text_oarchive_impl<class boost::archive::text_oarchive>(class std::basic_ostream<char,struct std::char_traits<char> > &,unsigned int)" (??0?$text_oarchive_impl@Vtext_oarchive@archive@boost@@@archive@boost@@IEAA@AEAV?$basic_ostream@DU?$char_traits@D@std@@@std@@I@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::archive::text_oarchive_impl<class boost::archive::text_oarchive>::save(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?save@?$text_oarchive_impl@Vtext_oarchive@archive@boost@@@archive@boost@@IEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: virtual __cdecl boost::archive::detail::basic_iserializer::~basic_iserializer(void)" (??1basic_iserializer@detail@archive@boost@@MEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::archive::detail::basic_iserializer::basic_iserializer(class boost::serialization::extended_type_info const &)" (??0basic_iserializer@detail@archive@boost@@IEAA@AEBVextended_type_info@serialization@3@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: virtual __cdecl boost::archive::detail::basic_oserializer::~basic_oserializer(void)" (??1basic_oserializer@detail@archive@boost@@MEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::archive::detail::basic_oserializer::basic_oserializer(class boost::serialization::extended_type_info const &)" (??0basic_oserializer@detail@archive@boost@@IEAA@AEBVextended_type_info@serialization@3@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::archive::detail::basic_iarchive::reset_object_address(void const *,void const *)" (?reset_object_address@basic_iarchive@detail@archive@boost@@QEAAXPEBX0@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: class boost::archive::library_version_type __cdecl boost::archive::detail::basic_iarchive::get_library_version(void)const " (?get_library_version@basic_iarchive@detail@archive@boost@@QEBA?AVlibrary_version_type@34@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::archive::detail::basic_iarchive::load_object(void *,class boost::archive::detail::basic_iserializer const &)" (?load_object@basic_iarchive@detail@archive@boost@@QEAAXPEAXAEBVbasic_iserializer@234@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl boost::archive::detail::basic_iarchive::~basic_iarchive(void)" (??1basic_iarchive@detail@archive@boost@@UEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::archive::detail::basic_oarchive::end_preamble(void)" (?end_preamble@basic_oarchive@detail@archive@boost@@QEAAXXZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: void __cdecl boost::archive::detail::basic_oarchive::save_object(void const *,class boost::archive::detail::basic_oserializer const &)" (?save_object@basic_oarchive@detail@archive@boost@@QEAAXPEBXAEBVbasic_oserializer@234@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: virtual __cdecl boost::archive::detail::basic_oarchive::~basic_oarchive(void)" (??1basic_oarchive@detail@archive@boost@@MEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::archive::basic_text_oarchive<class boost::archive::text_oarchive>::newtoken(void)" (?newtoken@?$basic_text_oarchive@Vtext_oarchive@archive@boost@@@archive@boost@@IEAAXXZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl boost::archive::archive_exception::~archive_exception(void)" (??1archive_exception@archive@boost@@UEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::archive::archive_exception::archive_exception(enum boost::archive::archive_exception::_exception_code,char const *,char const *)" (??0archive_exception@archive@boost@@QEAA@W4_exception_code@012@PEBD1@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: __cdecl boost::archive::archive_exception::archive_exception(class boost::archive::archive_exception const &)" (??0archive_exception@archive@boost@@QEAA@AEBV012@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: virtual bool __cdecl boost::serialization::typeid_system::extended_type_info_typeid_0::is_equal(class boost::serialization::extended_type_info const &)const " (?is_equal@extended_type_info_typeid_0@typeid_system@serialization@boost@@UEBA_NAEBVextended_type_info@34@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "public: virtual bool __cdecl boost::serialization::typeid_system::extended_type_info_typeid_0::is_less_than(class boost::serialization::extended_type_info const &)const " (?is_less_than@extended_type_info_typeid_0@typeid_system@serialization@boost@@UEBA_NAEBVextended_type_info@34@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::serialization::typeid_system::extended_type_info_typeid_0::type_unregister(void)" (?type_unregister@extended_type_info_typeid_0@typeid_system@serialization@boost@@IEAAXXZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::serialization::typeid_system::extended_type_info_typeid_0::type_register(class type_info const &)" (?type_register@extended_type_info_typeid_0@typeid_system@serialization@boost@@IEAAXAEBVtype_info@@@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: virtual __cdecl boost::serialization::typeid_system::extended_type_info_typeid_0::~extended_type_info_typeid_0(void)" (??1extended_type_info_typeid_0@typeid_system@serialization@boost@@MEAA@XZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: __cdecl boost::serialization::typeid_system::extended_type_info_typeid_0::extended_type_info_typeid_0(char const *)" (??0extended_type_info_typeid_0@typeid_system@serialization@boost@@IEAA@PEBD@Z) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::serialization::extended_type_info::key_register(void)const " (?key_register@extended_type_info@serialization@boost@@IEBAXXZ) 1>wxRememberme.obj : error LNK2001: unresolved external symbol "protected: void __cdecl boost::serialization::extended_type_info::key_unregister(void)const " (?key_unregister@extended_type_info@serialization@boost@@IEBAXXZ) 1>libeay32mt.lib(txt_db.obj) : error LNK2001: unresolved external symbol __iob_func 1>libeay32mt.lib(ui_openssl.obj) : error LNK2001: unresolved external symbol __iob_func 1>ssleay32mt.lib(s3_srvr.obj) : error LNK2001: unresolved external symbol __iob_func 1>ssleay32mt.lib(t1_enc.obj) : error LNK2001: unresolved external symbol __iob_func 1>ssleay32mt.lib(d1_both.obj) : error LNK2001: unresolved external symbol __iob_func 1>libeay32mt.lib(cryptlib.obj) : error LNK2001: unresolved external symbol __iob_func 1>libeay32mt.lib(pem_lib.obj) : error LNK2001: unresolved external symbol __iob_func 1>libeay32mt.lib(e_capi.obj) : error LNK2001: unresolved external symbol __iob_func 1>libeay32mt.lib(gost_eng.obj) : error LNK2001: unresolved external symbol __iob_func 1>libeay32mt.lib(cryptlib.obj) : error LNK2001: unresolved external symbol _vsnwprintf My boost library compile parameter is: C:\boost_1_61_0>b2 install --prefix=C:\Boost1_61_0 address-model=64 --build-dir= C:\boost-build toolset=msvc-14.0 variant=debug,release link=static threading=mul ti runtime-link=static stage I am using serialization. Thanks in advance

1 0

Re: [Boost-users] multiprecision modf
by Daniel Brake 03 Aug '16

03 Aug '16

Paul, Boost, Thanks for the quick reply! I haven’t looked into this in detail, but I think not, > but Boost.Math does > > #include <boost/math/special_functions/modf.hpp> > > You might also need to add this to your local function(s) to aid Argument > Dependant Lookup (ADL). > > BOOST_MATH_STD_USING Boost.Math and the BOOST_MATH_STD_USING solved the modf problem, so long as I include and using before including Karma. Since the compiler got past that, it generated a new error, related to log10, floor, and int comparison. I've had errors related to log10, floor, and ceil in the context of Eigen before. /u/ggael resolved them by explicit casting in certain places, see e.g. https://forum.kde.org/viewtopic.php?f=74&t=133404&p=359710#p359710 Here's the new error message: In file included from test/generating/mpfr_float.cpp:27: In file included from ./include/bertini2/io/generators.hpp:44: In file included from /usr/local/include/boost/spirit/include/karma.hpp:16: In file included from /usr/local/include/boost/spirit/home/karma.hpp:15: In file included from /usr/local/include/boost/spirit/home/karma/numeric.hpp:16: In file included from /usr/local/include/boost/spirit/home/karma/numeric/real.hpp:32: /usr/local/include/boost/spirit/home/karma/numeric/real_policies.hpp:263:39: error: incompatible operand types ('int' and 'typename enable_if_c<number_category<detail::expression<function, log10_funct<mpfr_float_backend<0, allocate_dynamic> >, number<mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, void, void> >::value == number_kind_floating_point, detail::expression<detail::function, detail::floor_funct<typename detail::backend_type<detail::expression<function, log10_funct<mpfr_float_backend<0, allocate_dynamic> >, number<mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, void, void> >::type>, detail::expression<function, log10_funct<mpfr_float_backend<0, allocate_dynamic> >, number<mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, void, void> > >::type' (aka 'boost::multiprecision::detail::expression<boost::multiprecision::detail::function, boost::multiprecision::detail::floor_funct<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic> >, boost::multiprecision::detail::expression<boost::multiprecision::detail::function, boost::multiprecision::detail::log10_funct<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic> >, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, void, void>, void, void>')) (traits::test_zero(n) ? 0 : floor(log10(n))) + 1; ^ ~ ~~~~~~~~~~~~~~~ /usr/local/include/boost/spirit/home/karma/numeric/detail/real_utils.hpp:170:24: note: in instantiation of function template specialization 'boost::spirit::karma::real_policies<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >::fraction_part<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type> >' requested here r = r && p.fraction_part(sink, long_frac_part, prec, precision); ^ /usr/local/include/boost/spirit/home/karma/numeric/real_policies.hpp:94:30: note: in instantiation of function template specialization 'boost::spirit::karma::real_inserter<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<mpfr_float>, boost::spirit::unused_type, boost::spirit::unused_type>::call_n<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return Inserter::call_n(sink, n, p); ^ /usr/local/include/boost/spirit/home/karma/numeric/detail/real_utils.hpp:56:31: note: in instantiation of function template specialization 'boost::spirit::karma::real_policies<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >::call<boost::spirit::karma::real_inserter<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<mpfr_float>, boost::spirit::unused_type, boost::spirit::unused_type>, boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, bertini::generators::BertiniNumPolicy<mpfr_float> >' requested here return p.template call<real_inserter>(sink, n, p); ^ /usr/local/include/boost/spirit/home/karma/numeric/real.hpp:192:35: note: in instantiation of function template specialization 'boost::spirit::karma::real_inserter<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<mpfr_float>, boost::spirit::unused_type, boost::spirit::unused_type>::call<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return inserter_type::call(sink, traits::extract_from<T>(attr, context), p_) && ^ /usr/local/include/boost/spirit/home/karma/generate.hpp:69:45: note: in instantiation of function template specialization 'boost::spirit::karma::any_real_generator<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<mpfr_float>, boost::spirit::unused_type, boost::spirit::unused_type>::generate<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, boost::spirit::context<boost::fusion::cons<const boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> &, boost::fusion::nil_>, boost::spirit::locals<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::spirit::unused_type, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return compile<karma::domain>(expr).generate(sink, context, unused, attr); ^ /usr/local/include/boost/spirit/home/karma/generate.hpp:91:23: note: in instantiation of function template specialization 'boost::spirit::karma::generate<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::karma::real_generator<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<mpfr_float> >, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return karma::generate(sink, expr, attr); ^ ./include/bertini2/io/generators.hpp:153:21: note: in instantiation of function template specialization 'boost::spirit::karma::generate<std::__1::back_insert_iterator<std::__1::basic_string<char> >, boost::spirit::karma::real_generator<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<mpfr_float> >, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return generate(sink, ^ test/generating/mpfr_float.cpp:53:47: note: in instantiation of function template specialization 'bertini::generators::Classic::generate<std::__1::back_insert_iterator<std::__1::basic_string<char> > >' requested here BOOST_CHECK(bertini::generators::Classic::generate(sink, z)); Any help with this one would be greatly appreciated. It feels beyond my diagnosis. It feels to me like I might should feed mpfr_float into Fusion to adapt it, so I can use the type directly with Karma. Here's the generator code so far: template <typename Num> struct BertiniNumPolicy : public karma::real_policies<Num> { // we want the numbers always to be in scientific format static int floatfield(Num n) { return std::ios_base::scientific; } static unsigned int precision(Num) { return std::numeric_limits<Num>::max_digits10; } }; template<> struct BertiniNumPolicy<mpfr_float> : public karma::real_policies<mpfr_float> { // we want the numbers always to be in scientific format static int floatfield(mpfr_float n) { return std::ios_base::scientific; } static unsigned int precision(mpfr_float const& x) { return x.precision(); } }; template<typename Num> using FullPrec = boost::spirit::karma::real_generator<Num, BertiniNumPolicy<Num> >; FullPrec<double> const full_prec_d = FullPrec<double>(); FullPrec<mpfr_float> const full_prec_mp = FullPrec<mpfr_float>(); template <typename OutputIterator> static bool generate(OutputIterator sink, mpfr_float const& c) { using boost::spirit::karma::generate; return generate(sink, // Begin grammar ( full_prec_mp ), // End grammar c // Data to output ); } As a last question, I am unsure about the use of the a function parameter in my specialization BertiniNumPolicy<mpfr_float>, particularly the precision(mpfr_float) function. In the documentation and examples I have seen for specializations, this function doesn't use the argument. Is it ok that it does, that it checks the actual precision of x??? See above code. An alternate method for me might be to just use the str() method provided by the number<...> from Multiprecision, but it seems like since this type is numeric, I'd like to be able to generate using the numeric generators from Karma. Thanks again! Daniel Brake > ---------- Forwarded message ---------- > From: "Paul A. Bristow" <pbristow(a)hetp.u-net.com> > To: <boost-users(a)lists.boost.org> > Cc: > Date: Wed, 3 Aug 2016 10:00:20 +0100 > Subject: Re: [Boost-users] multiprecision modf > > I haven’t looked into this in detail, but I think not, > > > > but Boost.Math does > > > > #include <boost/math/special_functions/modf.hpp> > > > > You might also need to add this to your local function(s) to aid Argument > Dependant Lookup (ADL). > > > > BOOST_MATH_STD_USING > > > > > http://www.boost.org/doc/libs/1_61_0/libs/math/doc/html/math_toolkit/config… > > > > *Table 11. Boost.Math Macros* > > > > “Provides using statements for many std:: (abs to sqrt) and boost::math > (rounds, modf) functions. This allows these functions to be called > unqualified so that ifargument-dependent Argument Dependent Lookup > <http://en.wikipedia.org/wiki/Argument-dependent_name_lookup> fails to > find a suitable overload, then the std:: versions will also be considered.” > > > > HTH > > > > Paul >

2 1

multiprecision modf
by Daniel Brake 03 Aug '16

03 Aug '16

Hi Boost, Does Boost.Multiprecision provide modf for floating point types? I need it for generating with Karma, unless the fact that mpfr_float with variable precision not having numeric_traits might get in the way. Thanks for any help. Error message follows. In file included from test/generating/mpfr_float.cpp:27: In file included from ./include/bertini2/io/generators.hpp:38: In file included from /usr/local/include/boost/spirit/include/karma.hpp:16: In file included from /usr/local/include/boost/spirit/home/karma.hpp:15: In file included from /usr/local/include/boost/spirit/home/karma/numeric.hpp:16: In file included from /usr/local/include/boost/spirit/home/karma/numeric/real.hpp:32: In file included from /usr/local/include/boost/spirit/home/karma/numeric/real_policies.hpp:21: /usr/local/include/boost/spirit/home/karma/numeric/detail/real_utils.hpp:115:33: error: no matching function for call to 'modf' U fractional_part = modf(n, &integer_part); ^~~~ /usr/local/include/boost/spirit/home/karma/numeric/real_policies.hpp:94:30: note: in instantiation of function template specialization 'boost::spirit::karma::real_inserter<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >, boost::spirit::unused_type, boost::spirit::unused_type>::call_n<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return Inserter::call_n(sink, n, p); ^ /usr/local/include/boost/spirit/home/karma/numeric/detail/real_utils.hpp:56:31: note: in instantiation of function template specialization 'boost::spirit::karma::real_policies<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >::call<boost::spirit::karma::real_inserter<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >, boost::spirit::unused_type, boost::spirit::unused_type>, boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> > >' requested here return p.template call<real_inserter>(sink, n, p); ^ /usr/local/include/boost/spirit/home/karma/numeric/real.hpp:192:35: note: in instantiation of function template specialization 'boost::spirit::karma::real_inserter<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >, boost::spirit::unused_type, boost::spirit::unused_type>::call<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return inserter_type::call(sink, traits::extract_from<T>(attr, context), p_) && ^ /usr/local/include/boost/spirit/home/karma/generate.hpp:69:45: note: in instantiation of function template specialization 'boost::spirit::karma::any_real_generator<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >, boost::spirit::unused_type, boost::spirit::unused_type>::generate<boost::spirit::karma::detail::output_iterator<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::unused_type>, boost::spirit::context<boost::fusion::cons<const boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> &, boost::fusion::nil_>, boost::spirit::locals<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::spirit::unused_type, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return compile<karma::domain>(expr).generate(sink, context, unused, attr); ^ /usr/local/include/boost/spirit/home/karma/generate.hpp:91:23: note: in instantiation of function template specialization 'boost::spirit::karma::generate<std::__1::back_insert_iterator<std::__1::basic_string<char> >, mpl_::int_<0>, boost::spirit::karma::real_generator<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> > >, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return karma::generate(sink, expr, attr); ^ ./include/bertini2/io/generators.hpp:149:21: note: in instantiation of function template specialization 'boost::spirit::karma::generate<std::__1::back_insert_iterator<std::__1::basic_string<char> >, boost::spirit::karma::real_generator<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>, bertini::generators::BertiniNumPolicy<boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> > >, boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on> >' requested here return generate(sink, ^ test/generating/mpfr_float.cpp:53:47: note: in instantiation of function template specialization 'bertini::generators::Classic::generate<std::__1::back_insert_iterator<std::__1::basic_string<char> > >' requested here BOOST_CHECK(bertini::generators::Classic::generate(sink, z)); ^ /usr/include/math.h:407:15: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>' to 'double' for 1st argument extern double modf(double, double *); ^ /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cmath:940:46: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>' to 'float' for 1st argument inline _LIBCPP_INLINE_VISIBILITY float modf(float __lcpp_x, float* __lcpp_y) _NOEXCEPT {return modff(__lcpp_x, __lcpp_y);} ^ /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cmath:941:46: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::mpfr_float_backend<0, allocate_dynamic>, boost::multiprecision::expression_template_option::et_on>' to 'long double' for 1st argument inline _LIBCPP_INLINE_VISIBILITY long double modf(long double __lcpp_x, long double* __lcpp_y) _NOEXCEPT {return modfl(__lcpp_x, __lcpp_y);} Daniel Brake

3 2

boost::serialization::array for Orocos RTT
by Sambeet Panigrahi 02 Aug '16

02 Aug '16

Sir, I work on Orocos Real Time toolkit.Thhe project uses a boost::serialization::array however in the boost 1.44 I use there is no such header.Can you please tell me whether this header is really a part of Boost now? If no what can I use instead of that? I am posting the relevant build errors from RTT for a clearer idea: In file included from /home/sambeet/rtt-master/rtt/internal/DataSourceTypeInfo.hpp:44:0, from /home/sambeet/rtt-master/rtt/internal/DataSource.inl:5, from /home/sambeet/rtt-master/rtt/internal/DataSource.hpp:237, from /home/sambeet/rtt-master/rtt/OperationInterface.hpp:48, from /home/sambeet/rtt-master/rtt/OperationInterface.cpp:39: /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:99:48: error: expected ‘)’ before ‘<’ token carray( boost::serialization::array<T> const& orig) ^ /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:165:41: error: ‘array’ is not a member of ‘boost::serialization’ const carray<T>& operator=( boost::serialization::array<OtherT> const& orig ) { ^ /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:165:41: note: suggested alternative: In file included from /usr/include/boost/serialization/array.hpp:151:0, from /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:42, from /home/sambeet/rtt-master/rtt/internal/DataSourceTypeInfo.hpp:44, from /home/sambeet/rtt-master/rtt/internal/DataSource.inl:5, from /home/sambeet/rtt-master/rtt/internal/DataSource.hpp:237, from /home/sambeet/rtt-master/rtt/OperationInterface.hpp:48, from /home/sambeet/rtt-master/rtt/OperationInterface.cpp:39: /usr/include/boost/array.hpp:60:11: note: ‘boost::array’ class array { ^ In file included from /home/sambeet/rtt-master/rtt/internal/DataSourceTypeInfo.hpp:44:0, from /home/sambeet/rtt-master/rtt/internal/DataSource.inl:5, from /home/sambeet/rtt-master/rtt/internal/DataSource.hpp:237, from /home/sambeet/rtt-master/rtt/OperationInterface.hpp:48, from /home/sambeet/rtt-master/rtt/OperationInterface.cpp:39: /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:165:75: error: expected primary-expression before ‘>’ token const carray<T>& operator=( boost::serialization::array<OtherT> const& orig ) { ^ /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:165:77: error: expected primary-expression before ‘const’ const carray<T>& operator=( boost::serialization::array<OtherT> const& orig ) { ^ /home/sambeet/rtt-master/rtt/internal/../types/carray.hpp:165:89: error: declaration of ‘operator=’ as non-function const carray<T>& operator=( boost::serialization::array<OtherT> const& orig ) { ^ make[2]: *** [rtt/CMakeFiles/orocos-rtt-gnulinux_dynamic.dir/OperationInterface.cpp.o] Error 1 make[1]: *** [rtt/CMakeFiles/orocos-rtt-gnulinux_dynamic.dir/all] Error 2 make: *** [all] Error 2 Regards Sambeet

2 1

Windows installation issues
by Alexander Carôt 01 Aug '16

01 Aug '16

Hi all, after having switched from OSX and Linux to Windows 10 I have issues compiling boost (1.61)with the MinGW compiler. The very first step fails: bootstrap.bat mingw results in not finding a right path, denying access and aborting the installation. So far I only found this article: https://andres.jaimes.net/698/use-c-with-mingw-and-netbeans-in-windows/ but it does not contain further info how (and where) to add additional info (I added c:\MinGW\bin to my PATH but it didn’t help). Any help appreciated, thanks in advance Alex --

6 8

Python TypeError with application compiled with CXX11_ABI=0
by Jackson Wiegman 29 Jul '16

29 Jul '16

Hi, I have an application I am trying to compile on Ubuntu 16.04. This is using GCC 5.4.0 and libboost 1.58.0 (stock libraries). The application has a linking to a library that was built with GCC 4.*, so I have to compile with D_GLIBCXX_USE_CXX11_ABI=0 to get backwards comparability (otherwise I have undefined abi:cxx11 links). However when I do this, I get a TypeError in Python: TypeError: No registered converter was able to produce a C++ rvalue of type > std::string from this Python object of type str It looks like boost is having a problem working without the ABI. Does anyone have a work-around or a patch for this? Jackson

2 2

[Python] gcc error compiling boost
by Àlex Jarauta 29 Jul '16

29 Jul '16

Dear all, my name is Alex and I am a postdoc at the University of Alberta, Edmonton, Canada. I am working with an in-house opensource code that uses boost to wrap C++ code with Python. In the latest version of our code, one has to download boost manually and compile it. I have tried wot two different versions (1.59 and 1.60) and I can compile them with python 2.7. However, if I try to compile it using either Python 3.3 or 3.5, I always get the same error: "./boost/python/detail/wrap_python.hpp:50:23: fatal error: pyconfig.h: No such file or directory # include <pyconfig.h>" I have been looking for this error for a while, but I have not been able to find a proper solution. I wonder if you could help me on this matter. Thank you very much for your attention. Best regards, Àlex

2 1

Graph: Trying to filter on custom properties
by Amit Prakash Ambasta 29 Jul '16

29 Jul '16

How should I be writing the get_filtered_graph in a generic way? #include <map> #include <string> #include <vector> #include <iostream> #include <boost/graph/adjacency_list.hpp> #include <boost/property_map/property_map.hpp> #include <boost/graph/filtered_graph.hpp> #include <boost/graph/graph_utility.hpp> template <typename F> struct EdgeProperty { F features; EdgeProperty() = default; EdgeProperty(const F& f) : features(f) {} }; template <typename EM, typename F> struct filtered_edge { F filters; EM emap; filtered_edge() = default; filtered_edge(EM emap_, F filters_) : emap(emap_), filters(filters_) {} template <typename E> bool operator()(const E& e) { auto e_prop = get(emap, e); auto e_feat = e_prop.features; for (auto it: e_feat) { if (get(e_feat, it.first) != it.second) { return false; } } return true; } }; template<typename G, typename F> G get_filtered_graph(G& g, F& filters) { typedef filtered_edge<boost::property_map<G, EdgeProperty<F> >, F> filter_fn; filter_fn filter{get(&EdgeProperty<F>::features, g), filters}; boost::filtered_graph<G, filter_fn> fg(g, filter); return fg; } typedef std::map<std::string, int> dict; typedef boost::adjacency_list< boost::vecS, boost::vecS, boost::directedS, boost::no_property, EdgeProperty<dict> > Graph; Graph create_empty_graph() noexcept { return {}; } int main() { const char* name = "ABCDE"; auto g = create_empty_graph(); auto v0 = boost::add_vertex(g); auto v1 = boost::add_vertex(g); auto v2 = boost::add_vertex(g); dict d01; d01["a"] = 1; dict d12; d12["b"] = 1; dict fil; fil["a"] = 1; auto ep01 = EdgeProperty<dict>{ dict{} }; boost::add_edge(v0, v1, d01, g); boost::add_edge(v1, v2, d12, g); std::cout << "Before filter" << std::endl; boost::print_graph(g, name); auto fg = get_filtered_graph(g, fil); std::cout << "After filter" << std::endl; boost::print_graph(fg, name); Graph ga; }

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[boost.geometry] concept namespace conflicts with new concept keyword (gcc 6.1)
by kique G 28 Jul '16

28 Jul '16

Hello, I am using boost.geometry with gcc 6.1 and I am finding conflicts between the new concept keyword (-fconcepts) and the concept namespace: /usr/include/boost/geometry/geometries/concepts/point_concept.hpp:33:50: error: expected identifier before 'concept' Am I missing something? If not, are there any plans for renaming this namespace? Do you know of any other incompatibilities between the boost libraries and the concepts TS? Thanks and best regards, Enrique Garcia

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SVGMath no longer available
by Je suis la poubelle 27 Jul '16

27 Jul '16

Hi, I don't have any question to ask (yet :) ) but have a comment. In the folder "libs\math\doc\html\math_toolkit", there's the file sf_implementation.html. Inside this file, there's a section called "Creating and Managing the Equations". Inside it, you talked about a program called SVGMath (with a hyperlink). However, the hyperlink points to a website which no longer exists. Have a nice day

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[boost.geometry] Why point coordinates are stored to SVG as integers?
by Mikhail Matrosov 27 Jul '16

27 Jul '16

Hello, I'm using boost::geometry::svg_mapper to save my shapes with floating point coordinates into an .svg file. It works great, but they are stored as integers. I can see this line in svg_mapper.hpp: namespace detail { namespace svg { typedef model::point<int, 2, cs::cartesian> svg_point_type; }} Thus svg_point is clearly defined to have integer coordinates. However, it is not convenient - SVG handles floating point coordinated perfectly well. Why not using original type of the serialized collection and let streams handle representation? ----- Best regards, Mikhail Matrosov

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Re: [Boost-users] lockfree : getting a move only type into spsc_queue
by Bjorn Reese 24 Jul '16

24 Jul '16

On 07/23/2016 11:36 PM, Thomas Novotny wrote: > In the end Imade a custom version of spsc_queue. Getting this working > (as a hack) was fairly easy, so I wanted to share it in the hope that a > better solution might make it into a future version of the library. FYI, there is a pull request about adding move support to spsc_queue, but the consequences have not been fully examined yet: https://github.com/boostorg/lockfree/pull/24 In the meanwhile, you can make a cleaner solution with a unique_ptr specialization of spsc_queue. See attachment. > bool push( T & t, T * buffer, size_t max_size ) T&& t

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lockfree : getting a move only type into spsc_queue
by Thomas Novotny 23 Jul '16

23 Jul '16

I had a unique_ptr from a pool with a custom deleter that I needed to get int a lockfree queue. This did not work out of the box with either boost::lockfree::queue or boost::lockfree::spsc_queue. There were three main issues: * default construction * copying * copy construction To solve the issue with default constructability I had to wrap the unique_ptr in a class. In the end Imade a custom version of spsc_queue. Getting this working (as a hack) was fairly easy, so I wanted to share it in the hope that a better solution might make it into a future version of the library. In essence, I only had to add some std::move calls and adjust the api for push. two lines here: bool push(T const & t, T * buffer, size_t max_size) { const size_t write_index = write_index_.load(memory_order_relaxed); // only written from push thread const size_t next = next_index(write_index, max_size); if (next == read_index_.load(memory_order_acquire)) return false; /* ringbuffer is full */ new (buffer + write_index) T(t); // copy-construct write_index_.store(next, memory_order_release); return true; } to bool push( T & t, T * buffer, size_t max_size ) { const size_t write_index = write_index_.load( memory_order_relaxed ); // only written from push thread const size_t next = next_index( write_index, max_size ); if( next == read_index_.load( memory_order_acquire ) ) return false; /* ringbuffer is full */ new (buffer + write_index) T(); // default-construct *(buffer + write_index) = std::move( t ); // move write_index_.store( next, memory_order_release ); return true; } a line here: bool push(T const & t) { return base_type::push(t); } to bool push(T & t) { return base_type::push(t); } and a few lines here template< class OutputIterator > OutputIterator copy_and_delete( T * first, T * last, OutputIterator out ) { if (boost::has_trivial_destructor<T>::value) { return std::copy(first, last, out); // will use memcpy if possible } else { for (; first != last; ++first, ++out) { *out = *first; first->~T(); } return out; } } to template< class OutputIterator > OutputIterator copy_and_delete( T * first, T * last, OutputIterator out ) { for (; first != last; ++first, ++out) { *out = std::move(*first); first->~T(); } return out; } In copy_payload there is only one change struct copy_convertible { template <typename T, typename U> static void copy(T & t, U & u) { u = t; } }; became template <typename T, typename U> static void copy(T & t, U & u) { u = std::move(t); } and that was it. The result is not pretty but works (only single element push and pop used).

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Boost Social Event at CppCon 2016
by Jon Kalb 23 Jul '16

23 Jul '16

Boost Users, Because a lot of Boosters are going to be attending CppCon, we¹d like to arrange a social event for Boosters/C++Now attendees. http://cppcon.org/ If you are planning to attend CppCon or even If you are just going to be in or around Bellevue, Washington between September 17th and 23rd and you¹d like to join us for dinner, please let us know so we can get a count. Please send mail to: social(a)boost.org Once we settle on a date, etc, we¹ll let everyone who responded know when and where, so please let us know, even if you are a ³maybe.² If you are attending, please make your hotel reservations soon. We are likely to sell out of our room block. http://cppcon.org/lodging/ I hope to see you at CppCon. Jon

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Problem using Boost 1.61.0 with VTK Marching Cubes
by PAUL SMITH 15 Jul '16

15 Jul '16

To whom it may concern, I asked this question to boost-bugs, but I was told not to expect a response from that email address and instead ask here. I seem to be having a problem using Boost 1.61.0 in conjunction with VTK 7.0.0. My purpose for using Boost is to obtain the filenames of all PNG files in any given folder using the following code: #define BOOST_FILESYSTEM_VERSION 3 #define BOOST_FILESYSTEM_NO_DEPRECATED #include "boost/filesystem.hpp" namespace fs = ::boost::filesystem; // return the filenames of all files that have the specified extension // in the specified directory and all subdirectories void get_all(const fs::path& root, const string& ext, vector<fs::path>&ret) { if(!fs::exists(root) || !fs::is_directory(root)) return; fs::recursive_directory_iterator it(root); fs::recursive_directory_iterator endit; while(it != endit) { if(fs::is_regular_file(*it) && it->path().extension() == ext) ret.push_back(it->path().filename()); ++it; } } This code is used as part of the CXX file, which is built with an appropriate CMakeLists file using CMake 3.5.1 to produce a corresponding .xcodeproj file. CXX and CMakeLists files are attached. However, the main problem that I'm facing is that attempting to build the project using an ALL_BUILD scheme in Xcode 7.0.1 leads to a series of errors pointing to the #include statements of the header files in the Boost folder (which is located in the same folder as the CXX and CMakeLists files). For instance, it starts off saying that "'boost/filesystem/config.hpp' file not found" in response to the following line of boost/filesystem.hpp: # include <boost/filesystem/config.hpp> Such errors could be resolved if I were to modify the syntax of the #include statements to follow a different format: # include "./filesystem/config.hpp" i.e., replacing the <> with "" and using relative paths to find the other required header files. However, going in to modify every single header file is a sort of tedium that I find it difficult to handle, and therefore I was hoping for a simpler solution to this problem. By the way, I am on a Mac, and my operating system is El Capitan version 10.11.5. Thank you in advance.

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