I can\'t find any information on how to install Qt built on Windows.
In wiki article How to set up shadow builds on Mac and Linux there\'s description of -prefix>
Qt's own build instructions show how this is done, by search/replace within each Makefile. Assuming the source was extracted to C:\qt-4.8.3 and build was performed within that directory, then do this:
fart -c -i -r Makefile* $(INSTALL_ROOT)\qt-4.8.3 $(INSTALL_ROOT)\my-install-dir
set INSTALL_ROOT=
mingw32-make install
Then create a config file that tells qmake about its new installation path. Create a textfile C:\my-install-dir\bin\qt.conf:
[Paths]
Prefix=C:/my-install-dir
Translations = translations
Then as a final step (as Randy kindly pointed out) you need to patch qmake.exe, which can be done using a simple utility called QtMove. This same tool also automatically updates all the prl files.