The Qt 4.7.1 windows packages found at http://qt.nokia.com/downloads can not be used to build Qt Creator.

The issue is that the file mkspecs/modules/qt_webkit_version.pri is missing. This leads to qmakes QT_CONFIG variable not containing "webkit". This is an issue since the define QT_NO_WEBKIT is not set in one of Qt's headers.

Qt Creator does have a plugin that can be build with or without webkit. This fails to build: The WebKit headers are included since QT_NO_WEBKIT is unset but the linker will not link against WebKit since "webkit" is not listed in QT_CONFIG in qmake.

This issue should effects all projects that conditionally link against Qt WebKit.

I observed this with the mingw flavor of the windows packages as well as for the MSVC version.

WORKAROUND:
Copy the attached qt_webkit_version.pri file into $QTDIR/mkspecs/modules.