I have some questions about the script in qt5-layer in meta-udoo. In fact, they have a qt5-env.bb that make some tests to write or not some export QT var on qt5-env.sh (if i'm not wrong ) . I'm not sure that is working because if i define a LVDS7 in my local.conf i'm not sure that it modify the file qt5-env.sh ? For example, i have found to build qt5.7 it's needed to add fonts in yocto image. At first i have make a recipe that overlay the layer "dejavu" but i don't need to do that ! Just need to export this : export QT_QPA_FONTDIR=/usr/share/fonts/truetype/ To enable this on the card i add it on the qt5-env.sh (+ another var env) : #export platforms export QT_QPA_PLATFORM=eglfs #with the new version of QT5.7, we need to re-define the path to the #font (no more delivred with this version) export QT_QPA_FONTDIR=/usr/share/fonts/truetype/ #export size of lvds7 in milimeters export QT_QPA_EGLFS_PHYSICAL_HEIGHT=91 export QT_QPA_EGLFS_PHYSICAL_WIDTH=152 #export touchscreen event export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/event1:inverty It work fine on the card, but how we can add this to qt5-env.bb to have a working bb (that we can configure from local.conf)?