You be correct. I'll give the patch a whirl and see if I can make more headeway. The big ones on my plate are koffice and digikam. The second patch I posted for digikam yesterday seems to be the k4 only patch. The first patch shows some promise, but I need to test more.
After the patch, the kstreamripper build failure is the same as that in avahi-tqt. If somebody figures out how to resolve one then likely we resolve the other too.
When you get digikam to build against libpng 15, digikam and gwenview both are broken with respect to using kipi-plugins. I notice the version of libkipi and kipi-plugins in the source tree are not the last versions released for KDE3. I intend to update both and then hopefully digikam and gwenview build correctly. That will take time.
Darrell