Building Andordi & Kernels

Android

sudo apt-get install libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-dev g++-multilib  &&
sudo apt-get install -y git flex bison gperf build-essential libncurses5-dev:i386 &&
sudo apt-get install tofrodos python-markdown libxml2-utils xsltproc zlib1g-dev:i386 && 
sudo apt-get install dpkg-dev libsdl1.2-dev libesd0-dev &&
sudo apt-get install git-core gnupg flex bison gperf build-essential &&  
sudo apt-get install zip curl zlib1g-dev gcc-multilib g++-multilib &&
sudo apt-get install libc6-dev-i386 &&
sudo apt-get install lib32ncurses5-dev x11proto-core-dev libx11-dev &&  
sudo apt-get install libgl1-mesa-dev libxml2-utils xsltproc unzip m4 &&
sudo apt-get install lib32z-dev ccache

https://android.googlesource.com/platform/manifest/

repo init -u https://android.googlesource.com/platform/manifest -b  android-8.1.0_r43

export LC_ALL=C
source build/envsetup.sh 
lunch aosp_arm64-eng
time make -j8

Kernel

git clone https://android.googlesource.com/kernel/goldfish.git

git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9

export PATH=$PATH:/media/shihyu/ssd/aarch64-linux-android-4.9/bin

cd goldfish
git br -a

export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-android-
make ranchu64_defconfig
time make -j8