This simple docker container contains the emdebian cross toolchains for arm and the custom qt libraries for the DHCOM debian jessie rootfs.
docker run --interactive --rm \
--workdir "$(pwd)" \
--volume "$(pwd)":"$(pwd)" \
--user $(id -u):$(id -g) \
jneuhauser/dhcom-qt-builder-jessie:latest \
arm-linux-gnueabihf-gcc -o hello_world hello_world.c
# install symlinks to /usr/local/bin
sudo /path/to/arm-linaro-gcc7-docker.sh install
# use linaro toolchain of docker image
arm-linux-gnueabihf-gcc -o hello_world hello_world.c
# remove symlinks to /usr/local/bin
sudo /path/to/arm-linaro-gcc7-docker.sh deinstall