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

Process extension compile issue.
by dinesh kumar 15 Jun '17

15 Jun '17

Hi Team, Greetings for the day. I am currently facing the problem with process extension as documented here <http://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/design.html#boo…> . I am testing the boost 1.64 version macOS, and unable to use the below functionality. void test() { cout << "On Setup" << endl; } int main() { std::function<void(void)> on_st = test; bp::child c2("ls", boost::process::extend::on_setup(on_st)); } *Error: * /usr/local/include/boost/process/detail/handler.hpp:33:9: No matching function for call to object of type 'std::__1::function<void ()>' Would somebody guide me here, please? -- Regards, Dinesh manojadinesh.blogspot.com

2 4

[Boost.Program_options] String options parser
by Belcourt, Kenneth 14 Jun '17

14 Jun '17

Hi, We have an executable that uses the program_options library to process command line options like this: $ ./hilbert.x -h -b [ --hilbert ] arg (=1) enable hilbert matrix -e [ --epsilon ] arg (=0.001) roundoff epsilon -h [ --help ] help message -i [ --input-file ] arg process input file -r [ --rank ] arg rank of matrix to construct -t [ --tolerance ] arg (=1e-13) linear tolerance -v [ --inverse ] arg (=0) enable inverse hilbert matrix -w [ --wordsize ] arg (=8) floating-point word size (bytes) and it works great. Now we’re trying to automate some testing and we test our executable with an input file that has hundreds of lines like this: --inverse 1 --tolerance 1e-15 --rank 2 --inverse 1 --tolerance 1e-15 --rank 3 --inverse 1 --tolerance 1e-15 --rank 4 where each line is a separate test case that we run with the specified options. I was looking for a program options parser that can parse a string, so I can read one line of input from this file into a string, and run that test case, that is something like this: // read one line of input from file ifstream ifp; string buffer; while (!ifp.eof() && ifp.good()) { getline(ifp, buffer); // load a set of command line options from this string po::parse_config_file<char>(buffer.c_str(), desc); } The only program option parsers I see are parse_command_line, parse_config_file, and parse_environment. Is there an easy way (without having to construct an argc/argv data structure) to parse a file of program options? — Noel Belcourt

3 4

Compile errors with Booost_1_64_0
by Michael Miller 13 Jun '17

13 Jun '17

Hello, Windows 10 gcc version 5.3.0 My program compiles OK with Boost_1_53_0. I get a compile failure (3 errors) when including Boost_1_64_0. \boost\boost_1_64_0\boost\numeric\ublas\storage.hpp:299: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, s); ^ private: friend class boost::serialization::access; // Serialization template<class Archive> void serialize(Archive & ar, const unsigned int /*version*/) { serialization::collection_size_type s(size_); ar & serialization::make_nvp("size",s); if ( Archive::is_loading::value ) { resize(s); } line 299 ar & serialization::make_array(data_, s); } \boost\boost_1_64_0\boost\numeric\ublas\storage.hpp:494: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, s); ^ private: // Serialization friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int /*version*/) { serialization::collection_size_type s(size_); ar & serialization::make_nvp("size", s); if ( Archive::is_loading::value ) { if (s > N) bad_size("too large size in bounded_array::load()\n").raise(); resize(s); } line 494 ar & serialization::make_array(data_, s); } \boost\boost_1_64_0\boost\numeric\ublas\matrix.hpp:5977: error: 'make_array' is not a member of 'boost::serialization' ar & serialization::make_array(data_, N); ^ void serialize(Archive & ar, const unsigned int /* file_version */) { // we need to copy to a collection_size_type to get a portable // and efficient serialization serialization::collection_size_type s1 (size1_); serialization::collection_size_type s2 (size2_); // serialize the sizes ar & serialization::make_nvp("size1",s1) & serialization::make_nvp("size2",s2); // copy the values back if loading if (Archive::is_loading::value) { size1_ = s1; size2_ = s2; } // could probably use make_array( &(data[0][0]), N*M ) line 5977 ar & serialization::make_array(data_, N); } Regards

1 0

How do I build x64 binaries with Boost source?
by Osman Zakir 12 Jun '17

12 Jun '17

Hi, How do I specify that I want to build 64-bit binaries when I run bootstrap and then invoke b2? I had a linker error saying, “1>libboost_thread-vc141-mt-gd-1_64.lib(thread.obj) : fatal error LNK1112: module machine type 'X86' conflicts with target machine type 'x64'” when I tried to build an ISAPI extension DLL with Wt (just a simple app using the same code as in the “Hello world” example). [Note: I’m just trying out the wtispai.lib/wisapid.lib connector libraries to see how to use them.] Any help would be appreciated. Thanks in advance. Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

3 2

Semantic Compiler Errors (general question)
by James Stortz 12 Jun '17

12 Jun '17

I have included and linked the latest Boost C++ library into my build. I tested the library beforehand. However, when simply including the header files in a C++ actor class in my Unreal game project, I get errors like: Warning Example: Error boost/config/stdlib/dinkumware.hpp(99) : warning C4668: '_HAS_NAMESPACE' is not defined as a preprocessor macro, replacing with '0' for '#if/#elif' Error Examples: Error boost/intrusive/slist.hpp(1926) : error C4003: not enough actual parameters for macro 'check' Error boost/intrusive/slist.hpp(1926) : error C2062: type 'void' unexpected It looks like there is some strict/unsupported semantic issues with the compiler that is being used. How do I fix this? I am on Windows with VS 2017. Sample programs compile fine with just cl /EHsc /I boost_1_64_0 test_game.cpp /link /LIBPATH:"F:\boost_1_64_0\stage\lib" Why would the compiler not work from within Unreal? Thanks, Regards, James

4 3

Re: [Boost-users] Beginner Question (Windows MSVC)
by James Stortz 11 Jun '17

11 Jun '17

So I got it to work by simply renaming the library, but I don't know if that's the proper solution or why. I'm wary that I'll have other issues or that something is off about my installation. (And I do have the LIBPATH correctly typed in the console -- sorry. :D) On Fri, Jun 9, 2017 at 8:26 PM, James Stortz <james.ryan.stortz(a)gmail.com> wrote: > So I got it to work by simply renaming the library, but I don't know if > that's the proper solution or why. I'm wary that I'll have other issues or > that something is off about my installation. (And I do have the LIBPATH > correctly typed in the console -- sorry. :D) > > On Fri, Jun 9, 2017 at 7:30 PM, stathis <stathis(a)npcglib.org> wrote: > >> Look at the path you're using with LIBPATH, it seems wrong, it should >> probably be >> >> /LIBPATH:F:\src\boost_1_64_0\stage\lib >> >> --st >> >> >> >> On 10/06/2017 02:04, James Stortz via Boost-users wrote: >> >> correction, the error was: >> >> LINK : fatal error LNK1104: cannot open file >> 'libboost_date_time-vc141-mt-s-1_64.lib' >> >> On Fri, Jun 9, 2017 at 7:00 PM, James Stortz <james.ryan.stortz(a)gmail.com >> > wrote: >> >>> I can't seem to include/link and compile properly. I am using boost 1.64 >>> and Visual Studio 2017 (Community). >>> >>> I can successfully include the headers and compile the example program >>> on the Getting Started page[1]. But when trying to simply compile the mutex >>> example from interprocess docs[2], I get this error: >>> >>> >>> LINK : fatal error LNK1104: cannot open file >>> `libboost_date_time-vc141-mt-2-1_64.lib` >>> >>> >>> From the Getting Started page on linking, I have been trying the >>> following: >>> >>> cl /EHsc /I boost_1_64_0 doc_memtest1.cpp ^ >>> /link /LIBPATH:F\src\boost_1_64_0\stage\lib >>> >>> >>> I have even tried a solution from Stackoverflow[3], multiple times with >>> various configurations, x64/x86, but nothing. I don't even have that >>> particular library. I have "libboost_date_time-vc141-mt-gd-1_64.lib" >>> and "libboost_date_time-vc141-mt-1_64.lib". >>> >>> I assume I am doing something wrong, as I am new to programming on >>> Windows/MSVC. >>> >>> Any help? Thanks! >>> James >>> >>> >>> [1] http://www.boost.org/doc/libs/1_64_0/more/getting_started/wi >>> ndows.html >>> >>> [2] http://www.boost.org/doc/libs/1_64_0/doc/html/interprocess/s >>> ynchronization_mechanisms.html#interprocess.synchronization_ >>> mechanisms.mutexes.mutexes_anonymous_example >>> >>> [3] https://stackoverflow.com/questions/41464356/build-boost-wit >>> h-msvc-14-1-vs2017-rc >>> >> >> >> >> _______________________________________________ >> Boost-users mailing listBoost-users@lists.boost.orghttps://lists.boost.org/mailman/listinfo.cgi/boost-users >> >> >> >

2 3

[MSM] exception_caught question
by Christophe Henry 10 Jun '17

10 Jun '17

Hi, > I found that answer for exceptions which can occur during the processing: > >https://lists.boost.org/boost-users/2012/03/73904.php > >Here is handled the case that exception is derived from std::exception. >What happens if not? >Can the parameter be changed to std::exception_ptr or just a > template Parameter? only std::exception are caught. Others just go through and interrupt the transition, which might leave the state machine in a dirty state, where an entry or exit action would not have been called. Cheers, Christophe

1 0

Beginner Question (Windows MSVC)
by James Stortz 09 Jun '17

09 Jun '17

I can't seem to include/link and compile properly. I am using boost 1.64 and Visual Studio 2017 (Community). I can successfully include the headers and compile the example program on the Getting Started page[1]. But when trying to simply compile the mutex example from interprocess docs[2], I get this error: LINK : fatal error LNK1104: cannot open file `libboost_date_time-vc141-mt-2-1_64.lib` >From the Getting Started page on linking, I have been trying the following: cl /EHsc /I boost_1_64_0 doc_memtest1.cpp ^ /link /LIBPATH:F\src\boost_1_64_0\stage\lib I have even tried a solution from Stackoverflow[3], multiple times with various configurations, x64/x86, but nothing. I don't even have that particular library. I have "libboost_date_time-vc141-mt-gd-1_64.lib" and "libboost_date_time-vc141-mt-1_64.lib". I assume I am doing something wrong, as I am new to programming on Windows/MSVC. Any help? Thanks! James [1] http://www.boost.org/doc/libs/1_64_0/more/getting_started/windows.html [2] http://www.boost.org/doc/libs/1_64_0/doc/html/interprocess/synchronization_… [3] https://stackoverflow.com/questions/41464356/build-boost-with-msvc-14-1-vs2…

2 2

[ Boost.Units ] Invert a quantity_type
by Belcourt, Kenneth 09 Jun '17

09 Jun '17

Hi, I have a structure that is passed some type from which I can extract a units quantity type: template <typename Field> struct field { Field f; typedef typename Field::quantity_type quantity_type; // access typed data off Field quantity_type operator[](int i) { return f[i]; } }; Is there a way to invert a quantity type so I can compute and return, say, the inverse of the passed quantity_type? So, for example, is there any Boost.Units inverse meta like function that might let me say something like this: template <typename Field> struct field_inverse { Field f; typedef typename Field::quantity_type quantity_type; typedef typename bu::inverse<quantity_type>::type inverse_quantity_type; // access typed data off field, return inverse of quantity_type inverse_quantity_type operator[](int i) { return one / f[i]; } }; I’m hoping for something more general than partially specializing the bu::inverse method for each quantity I may want to invert. Any ideas? — Noel Belcourt

2 2

[Boost.Heap] Possible bug with ordered iterator and boost::heap::binomial_heap
by Kudo, Jun 08 Jun '17

08 Jun '17

Hi all, I'm observing a weird phenomenon when iterating over a binomial heap after pushing two values with the same priority. Instead of printing the expected values twice, the ordered iterator seems to print three values. I do not observe this behavior when using a Fibonacci heap or a binary heap. I've attached sample code that demonstrates this behavior. Can anyone help explain what's going on? Boost Version : Boost 1.64 Compiler : GCC 5.3.0 #include <iostream> #include "boost/heap/fibonacci_heap.hpp" #include "boost/heap/binomial_heap.hpp" #include "boost/heap/d_ary_heap.hpp" template <class HeapType> void PrintHeap(HeapType const & heap) { std::cout << "Printing out heap : "; for (auto it = heap.begin(); it != heap.end(); ++it) { std::cout << *it << " "; } std::cout << "\n Printing out heap in order : "; for (auto it = heap.ordered_begin(); it != heap.ordered_end(); ++it) { std::cout << *it << " "; } std::cout << "\n\n"; } int main(int /* argc */, char** /* argv */) { typedef boost::heap::binomial_heap<int> BinomialHeap; BinomialHeap binomial_heap; binomial_heap.push(1); binomial_heap.push(1); // Prints {1,1} and {1,1,1} PrintHeap(binomial_heap); typedef boost::heap::fibonacci_heap<int> FibonacciHeap; FibonacciHeap fibonacci_heap; fibonacci_heap.push(1); fibonacci_heap.push(1); // Prints {1,1} and {1,1} PrintHeap(fibonacci_heap); typedef boost::heap::d_ary_heap<int, boost::heap::arity<2>, boost::heap::mutable_<true>> BinaryHeap; BinaryHeap binary_heap; binary_heap.push(1); binary_heap.push(1); // Prints {1,1} and {1,1} PrintHeap(binary_heap); } Thanks! Jun

1 0