# Download Android source with patches(local_manifests)
 Refer to http://source.android.com/source/downloading.html
 $ repo init -u https://android.googlesource.com/platform/manifest -b android-9.0.0_r45
 $ git clone https://github.com/android-rpi/local_manifests .repo/local_manifests -b pie
 $ repo sync

# Build for Raspberry Pi3
 https://github.com/android-rpi/device_brcm_rpi3/tree/pie

Use -j[n] option on sync & build steps, if build host has a good number of CPU cores.

Graphics HAL of this build : https://github.com/anholt/mesa/wiki/VC4