Download source:

$ mkdir ~/mydroid
$ cd ~/mydroid
$ repo init -u https://github.com/odroid-n2/android_manifest.git -b android-9.0
$ repo sync --no-tags --no-clone-bundle

Set up Linaro toolchains path:

$ export PATH=$PATH:/PATH/TO/mydroid/vendor/linaro/gcc-linaro-7.x-aarch64-linux-gnu/bin
$ export PATH=$PATH:/PATH/TO/mydroid/vendor/linaro/gcc-linaro-aarch64-none-elf-4.9-2014.09_linux/bin
$ export PATH=$PATH:/PATH/TO/mydroid/vendor/linaro/gcc-linaro-arm-none-eabi-4.8-2014.04_linux/bin

• Replace /PATH/TO/ with your current correct path.

Set up ccache:

$ export USE_CCACHE=1
$ export CCACHE_DIR=/path/to/ccache_cache/.ccache
$ prebuilts/misc/linux-x86/ccache/ccache -M 50G

To build the arm64 variant:

$ export ANDROID_BUILD_TYPE=64

To build for the 4GB RAM board:

$ export TARGET_BOARD_4GB=true

Select the target device:

$ source build/envsetup.sh
$ lunch odroidn2-[userdebug|user|eng]

To build the Android TV variant:

$ export TARGET_BUILD_GOOGLE_ATV=true

Compile Android image:

$ make -jxx selfinstall

• Replace xx with number of cores of your CPU.

For support refer to:

• https://forum.odroid.com/viewtopic.php?f=178&t=35463