build_karnak

Instructions to build LineageOS for karnak:

Step 1: Setup the environment.

sudo apt install -y bc bison build-essential ccache curl flex g++-multilib gcc-multilib git gnupg gperf imagemagick lib32ncurses5-dev lib32readline-dev lib32z1-dev liblz4-tool libncurses5 libncurses5-dev libsdl1.2-dev libssl-dev libxml2 libxml2-utils lzop pngcrush rsync schedtool squashfs-tools xsltproc zip zlib1g-dev python-is-python3

mkdir -p ~/bin

mkdir -p ~/android/lineage

curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo

chmod a+x ~/bin/repo

git config --global user.email "[email protected]"

git config --global user.name "Your Name"

cd ~/android/lineage

repo init -u https://github.com/LineageOS/android.git -b lineage-18.1 -g default,-darwin

Step 2: Get the device manifest file.

https://github.com/srccrow/karnak_manifests

https://github.com/srccrow/karnak_manifests/blob/main/karnak_manifest.xml

https://github.com/srccrow/karnak_manifests/blob/main/linaro_manifest.xml

save them to: ~/android/lineage/.repo/local_manifests

then do: repo sync --jobs=32

Fix the kernel:

sed -i 's/const const struct/const struct/g' kernel/amazon/karnak/drivers/pinctrl/mediatek/pinctrl-mtk-common.h

sed -i 's/CONFIG_FRAME_WARN=1500/CONFIG_FRAME_WARN=1520/g' kernel/amazon/karnak/arch/arm64/configs/lineageos_karnak_defconfig

sed -i 's/CONFIG_FRAME_WARN,COMMON,,,1500,1500,1500,1500,1500,1500/CONFIG_FRAME_WARN,COMMON,,,1520,1520,1520,1520,1520,1520/g' kernel/amazon/karnak/scripts/kcrs/correct_config.csv

Step 3: Turn on caching to speed up build. Note that I used 300Gb instead of 100Gb (just personal preference).

mkdir ~/ccache

export CCACHE_DIR=~/ccache

export USE_CCACHE=1

export CCACHE_EXEC=/usr/bin/ccache

ccache -M 300G

export ANDROID_JACK_VM_ARGS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4G"

Step 4: Select Build.

source build/envsetup.sh

rm -rf out/target/product/karnak/obj/KERNEL_OBJ/.version

rm -rf out/target/product/karnak/obj/KERNEL_OBJ/.config.old

lunch lineage_karnak-userdebug

Step 5: Build it!

cmka

brunch karnak

Step 6: Replace boot.img

Replace boot.img inside the rom.zip,

the SHA256 for the correct boot.img that allows to boot the OS is the following:

SHA256: dbd503c5b6b8fd3652b93d5bc75ff666ac667607fe0f3cca7773e93b04d57c2f

Credits:

Kaijones23 for the rom,

https://gitlab.com/mt8163/karnak_releases

kingladar for fixing the kernel compilation and advices on how to build this rom,

https://forum.xda-developers.com/t/rom-unstable-unlocked-karnak-lineage-18-1-25-october-2021.4352241