When running qmake (configure step successfully detected directfb) on src/plugins/platforms/directfb/directfb.pro it fails with
Project ERROR: Could not find feature directfb_egl.
Commenting the directfb_egl lines in directfb.pro helps. I dont need this feature since I'm not using the broadcom-97425. I assume that directfb_egl is just unknown to the feature system, hence the complaint.