Yes, the first problem seems to be that I have both qmake and qmake-qt4, so I used QMAKE=... and that helped. But then libpoppler wasn't found. Fixed that (had libpoppler-qt4.so.3, but no libpoppler-qt4.so).

Then I got a whole slew of errors when trying to build pictureflow. This turned out to be because qmake (for Qt3) was still being used there. So I went into build/....pictureflow/qt, ran qmake-qt4 -o Makefile.qt pictureflow.pro manually, and then was able to compile that. Then all was well. Looks like I could have changed something in pyqtdistutils, as well, to do that.

Perhaps you should look for qmake-qt4 first?