QtSerialPort .bb

meta-qt5/meta-qt5/blob/master/recipes-qt/qt5/qtserialport_git.bb

Add QtSerialPort to *-image. bb

IMAGE_INSTALL_append = " qtserialbus qtserialport"

/oe-core/layers/meta-toradex-demos/recipes-images/images/angstrom-qt5-x11-image.bb

Check Buildhistory

oe-core/build/buildhistory/sdk/angstrom-glibc-x86_64-armv7at2hf-neon/meta-toolchain-qt5/target/installed-packages.txt

oe-core/build/buildhistory/images/apalis_imx6/glibc/Qt5-X11-Image$ cat installed-packages.txt | grep serial

Reference

https://www.toradex.com/community/questions/12937/qtserialbus-1.html