Here is a list of the 3rd-party libraries:
For mingw only:
There are sometimes mingw and msvc versions, be careful which you choose.
Download all 'bin' and 'lib' packages with kdewin-installer for the build process, set CMAKE_INCLUDE_PATH and CMAKE_LIBRARY_PATH for cmake. The Installer will put all files into the installation directory you can choose on the settings page. CMAKE_INCLUDE_PATH and CMAKE_LIBRARY_PATH should point to the include and lib subdirectories of your installation path respectively.