dexter1 has put together a tardist for Qt 3.3.1, the first step toward a KDE 3.2.1 build. More information and related discussion on both Qt and KDE under IRIX can be found in this forum thread.
You can grab a copy here or on the mirror mentioned in the forum thread above.
Update: The archive linked above was updated on the 27th to repair some symbolic link related issues.
