I am trying to compile some code into a shared library but it has not been working. Using Dependency Walker I was able to find that the only thing missing is std::basic_streambuf<char, std::char_traits >::seekpos(std::fpos, std::_Ios_Openmode)

The dependencies

I have tried reinstalling mingw64 as well as downloading a libstdc++-6.dll from here, neither of which worked. I am not sure how to solve this problem as I am not very experienced with c/c++.

Thank you!