Recently, by looking at the source code of `std::move`, I discovered that Qt links my programs with a version of the Standard Library which does not support C++11/14 features:

```
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename remove_reference<_Tp>::type&&
move(_Tp&& __t) _NOEXCEPT
{
    typedef typename remove_reference<_Tp>::type _Up;
    return static_cast<_Up&&>(__t);
}

#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
_Tp&
move(_Tp& __t)
{
    return __t;
}

template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
const _Tp&
move(const _Tp& __t)
{
    return __t;
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

```

Actually, the macro `_LIBCPP_HAS_NO_RVALUE_REFERENCES` is defined (I use `CONFIG += C++14` in my `.pro` file, but this is a problem of the library).

Do I have to rebuild libc++ in order to use C++ features (like proper `std::move`) with Qt? Or maybe I have to change some settings?

I use Qt 5.7 with LLVM 7.3.0.