A cross-compiling build environment for mingw programs.

How to create qt-ros packages that can also be compiled by the mingw_cross compiler.

Often you'll need to transfer some mingw_cross built libs to a native mingw windows environment so that you can finish development. Either its because your colleagues are using windows, or you have other libraries already built in the native mingw environment that you cant rebuild with mingw_cross. This guide was written based on Guillaume Walck's experiences.