How to build:

1. Establish Android build environment and install repo.

2. Initialize repo:

repo init -u https://android.googlesource.com/kernel/manifest -b common-android16-6.12-lts
curl -o .repo/local_manifests/manifest_rk_opi.xml -L https://raw.githubusercontent.com/dvab-sarma/android_kernel_manifest/android-16.0/manifest_rk_opi.xml --create-dirs

3. Sync source code:

repo sync

4. Compile:

Orange Pi 5:

tools/bazel build --config=fast --config=stamp //common:opi5

Orange Pi 5 pro:

tools/bazel build --config=fast --config=stamp //common:opi5_pro

Orange Pi 3B:

tools/bazel build --config=fast --config=stamp //common:opi3b

Compiled kernel Image, dtb can be found in -

for opi 5 - bazel-bin/common/opi5/arch/arm64/boot

for opi 5 pro - bazel-bin/common/opi5_pro/arch/arm64/boot

for opi 3b - bazel-bin/common/opi3b/arch/arm64/boot

directory.

Replace existing files in device/opi/opi5_pro-kernel or for opi 3b device/opi/opi3b-kernel directory of the Android source tree to include them in Android 16 build. You can also replace existing files in the boot partition of the Orange Pi 5 pro or Orange Pi 3b Android 16 image .

If you want autoboot for Orange Pi 5 only build (the easy way: which is not generating bootscr.cmd from ground up), Just rename the dtb of Orange Pi 5 dtb(rk3588s-orangepi-5.dtb) to Orange Pi 5 Pro dtb name (rk3588s-orangepi-5-pro-1.dtb) and copy it into the boot patition of the image or into the device/opi/opi5_pro-kernel.

5. rebuild steps -

1. cd common
2. make mrproper
3. cd ..
4. rm -rf out/ bazel-out/ bazel-bin/ bazel-* .bazelrc
5. tools/bazel clean --expunge

and follow 4th step, to compile the kernel image and dtb without any errors.