To get started with the EuclidOS sources, you'll need to get familiar with Git and Repo.
To initialize your local repository, use command:
repo init -u https://github.com/euclidTeam/manifest.git -b qpr3 --git-lfs
Then sync up:
repo sync -c -j$(nproc --all) --force-sync --no-clone-bundle --no-tags --optimized-fetch --prune
Initialize the ROM environment with the envsetup.sh script.
. build/envsetup.sh
Lunch your device after cloning all device sources if needed.
lunch euclid_$device-ap2a-userdebug
Start compilation
m euclid