Crosscompile Raspi3 buttons faulty

ruphy

Hey there,

i want to cross compile from Ubuntu 16.04 to raspi3.
i am looking for this tutorial: https://wiki.qt.io/RaspberryPi2EGLFS
after i tried the example:
cd qtbase/examples/opengl/qopenglwidget
~/raspi/qt5/bin/qmake
make
scp qopenglwidget pi@raspberrypi.local:/home/pi

the interesting thing is, that i can see the rotating hologram. (so i think
but there is no text in the buttons or tabs. mybe i can later give you an screenshot, i necessary?!

please. need some help.

ruphy

saw following error: "QFontDatabase: Cannot find font directory /usr/local/qt5pi/lib/fonts."
Any ideas?

SGaist

Hi and welcome to devnet,

Do you have any font in that folder ?

ruphy

hey,
thanks for answering.
i copied the fonts into this folder, but there was no change.
i dont know how, but maybe i forgot to rsync the qt5pi directory.
now it works.

SGaist

Great !

Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum users may know a solution has been found :)

ruphy

ok. the problem is back...
the issue was that i took another RPI 3 and i installed qtcreator. i forgot to rsync the qt5pi folder.
after the rsync i got the same problem... so i think it took the libs from the native qt

ruphy

ok. problem solved.

i had to set the variables in ~/.bashrc with nano e.g.:
sudo nano ~/.bashrc

export QT_QPA_EGLFS_PHYSICAL_WIDTH=528
export QT_QPA_EGLFS_PHYSICAL_HEIGHT=295
export QT_QPA_FONTDIR=/usr/share/fonts/truetype

after closing nano in terminal:
source ~/.bashrc