Compile QTCreator error

[tonnot]

After a long time, I almost have the right way to compile QTcreator with mingw.
1.- My source is at d:\QtCreatorSource
2.- I open a QT Command prompt
3.- md qtcreator , cd qtcreator (as an advise from qtcreatorsource\readme)
4.- qmake d:\QtCreatorSource\qtcreatorpro -spec win32-g++ -r CONFIG+=release
(After a minute some files have been created)
5.- mingw32-make release This does not run ... I have the error :
*** No rule to make target 'release'. Stop.

Please help