Humm ... i found qmake in /usr/bin( lrwxrwxrwx 1 root root 23 Abr 27 16:10 /usr/bin/qmake -> /etc/alternatives/qmake ) and /usr/local/Trolltech/Qt-4.5.0/bin
That's good so, because Qt uses ($QTDIR)/bin/qmake and ($QTDIR)/include, so simple change your system variable and all should work fine!
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