undefined reference to `boost::filesystem::path::codecvt() CodeBlocks Windows

Question

I'm trying to use boost on CodeBlocks. I have codeblocks configured with MinGW-w64. I alredy have included the following libraries in the linker settings

libboost_system-mgw73-mt-d-x32-1_66.a
libboost_system-mgw73-mt-x64-1_66.a
libboost_filesystem-mgw73-mt-x64-1_66.dll.a

I also try changing the order...

This is the source code

#include <iostream>
#include <boost/filesystem.hpp>

using namespace std;
namespace fs = boost::filesystem;
int main(int argc, char* argv[])
{
if( fs::is_directory("."))
    cout << "Works!" << endl;
return 0;
}

i have read many "solutions" but they didn't work. i tried:

• changing the #include for this

  #define BOOST_NO_CXX11_SCOPED_ENUMS
  #include <boost/filesystem.hpp>
  #undef BOOST_NO_CXX11_SCOPED_ENUMS
  

• creating a new compiler flag with boths values

-lboost_filesystem-mt

and also

-lboost_filesystem

but i always get the same error

...\boost_1_66_0\boost\filesystem\path.hpp|981|undefined reference to `boost::filesystem::path::codecvt()'|