Hi Rich,
i am trying to install the same Version on an Pi 4 (piCore v13.x armv7l)
and i can't find a newer version of fbv in the Internet
i did exactly the same but it's not working:
checking for libjpeg presence... no
checking for libpng presence... no
building with bmp support... yes
checking for DEFAULT_FRAMEBUFFER... /dev/fb0
installation dir: /usr/local/bin
manuals dir: /usr/local/man
libjpeg-turbo.tcz and libpng are installed.
I think it had something to do with the Hardware.