Cmake_mingw build error

Hi,
I built urho3d with mingw, but has error:

Source\ThirdParty\SDL\src\audio\winmm\SDL_winmm.c:57:33: error: unknown type name 'WAVEOUTCAPS2W'
 DETECT_DEV_IMPL(SDL_FALSE, Out, WAVEOUTCAPS)
                             ^

any help?

Thanks.

Fixed,

My mingw is wrong, everything is ok after installed mingw-w64