LinuxFb: driver not found

i'm running the linux kernel and rootfs i built from the pengutronix BSP on
a mini6410.  i turned on QT support so have all the QT files, along with
some demo programs.    i have an LCD screen attached to the board. 

when i try to run the demos, for example typing
./affine -qws,  i get this error:

LinuxFb:  driver not found

does anyone know what this is?   i assume it has something to do with the
framebuffer, but am not sure. i can run fbtest and everything passes.

Qt cannot find its own driver for the framebuffer driver. Build the Qt
library with the gfx-linuxfb option (works at least with Qt-4.8.1)