安装编译依赖

这里使用Ubuntu22.04

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sudo apt install git build-essential kernel-package fakeroot libncurses5-dev libssl-dev ccache bison flex qtbase5-dev fastboot -y

内核源码及编译链

内核源码mianline建议选择release分支

编译链zyc_clang

pmbootstrap

安装pmbootstrap

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git clone https://gitlab.com/postmarketOS/pmbootstrap.git
mkdir -p ~/.local/bin
ln -s "$PWD/pmbootstrap/pmbootstrap.py" ~/.local/bin/pmbootstrap
export PATH="$HOME/.local/bin:$PATH"
pmbootstrap --version

初始化，选项说明

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pmbootstrap init

编译内核

内核配置

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#进入内核目录
cp ~/.local/var/pmbootstrap/cache_git/pmaports/device/community/linux-postmarketos-sdm845/config-linux-postmarketos-qcom-sdm845.aarch64 arch/arm64/configs/defconfig

编译

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export PATH="/home/mkr/Downloads/toolchains/zyc_clang/bin:${PATH}"
make ARCH=arm64 CC=clang defconfig O=.output
make ARCH=arm64 CC=clang menuconfig O=.output #额外开启需要的选项

make -j$(nproc --all) \
ARCH=arm64 \
O=.output \
CC=clang \
CROSS_COMPILE=aarch64-linux-gnu- \
CROSS_COMPILE_ARM32=arm-linux-gnueabi- \
AR=llvm-ar \
NM=llvm-nm \
OBJCOPY=llvm-objcopy \
OBJDUMP=llvm-objdump \
STRIP=llvm-strip \
LLVM=1 \
LLVM_IAS=1

pmbootstrap build --envkernel linux-postmarketos-qcom-sdm845

烧录

手机进入fastboot模式

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#刷写内核
pmbootstrap flasher flash_kernel

pmbootstrap install --fde #--fde表示对userdata分区加密

fastboot erase dtbo
pmbootstrap flasher flash_rootfs --partition userdata

#使用阿里云镜像
pmbootstrap --mirror-pmOS=https://mirrors.aliyun.com/postmarketOS/ --mirror-alpine=https://mirrors.aliyun.com/alpine/ init
pmbootstrap --mirror-pmOS=https://mirrors.aliyun.com/postmarketOS/ --mirror-alpine=https://mirrors.aliyun.com/alpine/ install