Make sure that your LINUX based computer is setup for developing Android roms; you can read how here. url:https://source.android.com/setup/initializing
Make a new directory called WORKSPACE as follows: mkdir WORKSPACE cd WORKSPACE
Install Repo in the created directory WORKSPACE repo init -u https://github.com/crdroidandroid/android -b 7.1
Add the following roomservice.xml file in .repo/local_manifests within the WORKSPACE directory. git clone https://github.com/AICProcks/crDroid_local_manifests.git .repo/local_manifests -b 7.1
Add the following code to your ".bashrc" as follows: export JACK_SERVER_VM_ARGUMENTS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4g"
Then use the following code: repo sync --force-sync . build/envsetup.sh make clobber brunch grouper