What is the preferred cross-platform "core" definition using boost :: program_options?

Question

I am trying to develop a cross-platform application using C ++ with boost.

I usually program in a * nix environment, where I always defined "main" as follows:

int main( const int argc, const char* argv[] )
{
...
}

For this application, I run in a Windows environment using Visual Studio 2003.

When I try to use boost :: program_options with this definition, I get compilation errors from program_options :: store:

po::options_description desc("Supported options");
desc.add_options()...;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);

Mistake:

main.cpp(46) : error C2665: 'boost::program_options::store' : none of the 2 overloads can convert parameter 1 from type 'boost::program_options::basic_parsed_options<charT>'
    with
    [
        charT=const char
    ]
    c:\boost_1_38_0\boost\program_options\variables_map.hpp(34): could be 'void boost::program_options::store(const boost::program_options::basic_parsed_options<charT> &,boost::program_options::variables_map &,bool)'
    with
    [
        charT=char
    ]
    c:\boost_1_38_0\boost\program_options\variables_map.hpp(43): or       'void boost::program_options::store(const boost::program_options::basic_parsed_options<wchar_t> &,boost::program_options::variables_map &)'
    while trying to match the argument list '(boost::program_options::basic_parsed_options<charT>, boost::program_options::variables_map)'
    with
    [
        charT=const char
    ]

I tried to force the wchar_t function to execute, specifying main as follows:

int main( const int argc, wchar_t* argv[]){
...
}

Then it compiles, but I get link errors:

main.obj : error LNK2019: unresolved external symbol "void __cdecl boost::program_options::store(class boost::program_options::basic_parsed_options<unsigned short> const &,class boost::program_options::variables_map &)"  referenced in function _main
main.obj : error LNK2019: unresolved external symbol "public: __thiscall boost::program_options::basic_parsed_options<unsigned short>::basic_parsed_options<unsigned short>(class boost::program_options::basic_parsed_options<char> const &)"  referenced in function "public: class boost::program_options::basic_parsed_options<unsigned short> __thiscall boost::program_options::basic_command_line_parser<unsigned short>::run(void)" 
main.obj : error LNK2019: unresolved external symbol "class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl boost::program_options::to_internal(class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > const &)"  referenced in function "class std::vector<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > > __cdecl boost::program_options::to_internal<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > >(class std::vector<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> >,class std::allocator<class std::basic_string<unsigned short,struct std::char_traits<unsigned short>,class std::allocator<unsigned short> > > > const &)" 

Finally, if I go back to setting up the main default definition of Visual Studio, it compiles and links:

int main( const int argc, _TCHAR* argv[]){
...
}

, Windows, , * nix? _TCHAR? .

Windows * nix, boost:: program_options?

Answer 1

, , . :

int main( int argc, char* argv[] )
{
  // ...
}

Answer 2

int main() int main(int argc, char* argv[]) (a.k.a. int main(int argc, char** argv)) ++ .

VisualStudio , , (1): main() WinMain() (2) , char wchar_t s, VisualStudio , , split_winmain().

char ( ), #undef UNICODE.