Mex_function Unicode.lib

i have a lib which includes uni coded headers, while mexing with lib headers i am getting lot of compiler errors which is basically unable to convert the arguments from one form to other

#include "SamplwUnicodeCPP.h"

using matlab::mex::ArgumentList;
using matlab::engine::convertUTF8StringToUTF16String;
using namespace matlab::data;

class MexFunction : public matlab::mex::Function
{
  ArrayFactory factory;

  std::shared_ptr<matlab::engine::MATLABEngine> matlabPtr = getEngine();

  CSamplwUnicodeCPP *m_libptr;
  
public:
  MexFunction::MexFunction(void)
  {
    
    
  }

  void operator()(ArgumentList outputs, ArgumentList inputs)
  {

          m_libptr->Getstring();
    }

};

and i am including corresponding headers and lib in a.m script

close all;
clc;

%addpath('include','lib')
addpath(genpath(pwd))

disp('Generating release code');

mex('-R2018a','-Iincludes','-Llib', 'Extract_data.cpp')

disp('Done');

i am pretty new to MATLAB, please help, where i am going wrong !!!

[Jan]

I've formatted your code and text today. Please read this: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

"while mexing with lib headers i am getting lot of compiler errors which is basically unable to convert the arguments from one form to other" - please post at least some of the error messages and explain what "one" and "other" means.

In addpath(genpath(pwd)) it matters, what pwd is. You do not include the headers in a Matlab script, but the Matlab script contains a call to the compliler, which tries to include the libraries. Therefore addpath is not relevant and might only confuse the Matlab path.

Without seeing the error message it is hard to guess, what's going wrong.

[Jan]

[MOVED from section for answers] Hareesh Kumar wrote:

 Thank you Jan

Error using mex Creating library Extract_data.lib and object Extract_data.exp Extract_data.obj : error LNK2019: unresolved external symbol "public: class std::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> > __cdecl CSamplwUnicodeCPP::Getstring(void)" (?Getstring@CSamplwUnicodeCPP@@QEAA?AV?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@XZ) referenced in function "public: virtual void __cdecl MexFunction::operator()(class matlab::mex::MexIORange<class std::_Vector_iterator<class std::_Vector_val<struct std::_Simple_types<class matlab::data::Array> > > >,class matlab::mex::MexIORange<class std::_Vector_iterator<class std::_Vector_val<struct std::_Simple_types<class matlab::data::Array> > > >)" (??RMexFunction@@UEAAXV?$MexIORange@V?$_Vector_iterator@V?$_Vector_val@U?$_Simple_types@VArray@data@matlab@@@std@@@std@@@std@@@mex@matlab@@0@Z) Extract_data.mexw64 : fatal error LNK1120: 1 unresolved externals

this is the error i am getting i placed all the lib and includes in same root folder

[Jan]

You mention "Unicode.lib", but did not include it in the mex command, as far as I can see.

Answer 1

[Hareesh Kumar]

hi can you please tell me how can i include an extrenal x64 release static lib in mexing

currently i am using a build .m script like this

close all;

clc;

%addpath('include','lib')

addpath(genpath(pwd))

disp('Generating release code');

mex('-R2018a','-Iinclude','-Llib/-lsampleunicode lib.lib',''Extract_data.cpp'')

disp('Done');

whre i copied all the include files in include folder and external static lib in lib folder

any thing else i would say the lib name?

please help

[Jan]

This seems to be a new question. Please open a new thread instead of attaching it in the section for answers of another question.

There is no reason to pollute the path with the current folder in addpath(genpath(pwd)). Omit this line. Use absolute folder names instead.