編譯 Linux Kernal (on Ubuntu 20.04)

# Ubuntu 20.04.3

# 更新與下載套件

sudo apt update

sudo apt upgrade

sudo apt install vim net-tools git flex bison python3-dev build-essential cmake cppcheck cscope docker docker.io dwarves gcc-aarch64-linux-gnu gdb-multiarch kernelshark libncurses5-dev libssl-dev openssl openjdk-13-jre qemu-system-arm trace-cmd universal-ctags libelf-dev zstd

# 下載與解壓縮 Linux Kernel

## Linux Kernel 版本建議選擇比目前新的，不然有些 Driver 可能會沒有！

wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.15.13.tar.xz

tar -Jxf linux-5.15.13.tar.xz

cd linux-5.15.13/

# 複製與編輯設定檔

## 複製設定檔

cp /boot/config-5.11.0-44-generic .config

## 讀進複製過來的設定檔

make menuconfig

<Save> <Exit>

# make clean

## 編輯設定檔

nano .config

^W

CONFIG_SYSTEM_TRUSTED_KEYS=""

# CONFIG_X86_X32=y

^X

scripts/config --disable SYSTEM_TRUSTED_KEYS

scripts/config --disable SYSTEM_REVOCATION_KEYS

# 編譯

cat /proc/cpuinfo

make modules -j8

make -j8

# 安裝

# Ref: https://blog.csdn.net/clh14281055/article/details/112294167

sudo make INSTALL_MOD_STRIP=1 modules_install

# sudo make modules_install

sudo make install