git clone https://github.com/gentu/android_device_zte_nx503a.git -b cm-12.0 device/zte/nx503a
git clone https://github.com/gentu/android_kernel_zte_nx503a.git -b cm-12.0 kernel/zte/nx503a
git clone https://bitbucket.org/gentu/vendor_zte_nx503a.git -b cm-12.0 vendor/zte/nx503a
# or edit .repo/local_manifests/roomservice.xml

mkdir -p .repo/local_manifests/
cp device/zte/nx503a/roomservice.xml .repo/local_manifests/

sudo cp device/zte/nx503a/cmtools /usr/local/bin/
cmtools s
      ##s = set current directory as source directory
cmtools cup
      ##c = clean repo
      ###u = update repo
      ####p = patch repo

# For update device/kernel/vendor use
cmtools d

# Compile
. build/envsetup.sh
lunch cm_nx503a-userdebug
mka otapackage

### Also useful
# mka installclean
# mka bootimage
# mka recoveryimage