iwmake is the tool used to generate the Qt installer binaries.To be able to use it yourself create a config.default in theconfig/ directory. You can refer to config.default.sample to seewhich values need to be set within this file.Afterwards call "iwmake.bat mingw-opensource.conf" to create aninstaller package yourself.Note that the binary creation takes a lot of time and is veryCPU-intensive as it recompiles the Qt source package among othersteps.