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# Arch Linux ARM for Odroid C4
This repository contains instructions and scripts for building a full Arch Linux ARM image for the Odroid C4 single board computer.
## Prerequisites
On your Arch Linux host system, install the required QEMU packages:
```bash
sudo pacman -S qemu-base qemu-user-static qemu-user-static-binfmt
```
## Building the Kernel
1. Clone the Armbian build repository:
```bash
git clone https://github.com/armbian/build
cd build
```
2. Run the kernel build:
```bash
./compile.sh \
BOARD=odroidc4 \
BRANCH=current \
KERNEL_ONLY=yes \
KERNEL_CONFIGURE=no \
RELEASE=jammy # Doesn't matter for kernel-only
```
## Extracting Kernel from Built Image
After the build completes, extract the kernel and related files:
```bash
# Your built image
IMAGE="output/images/Armbian_*.img"
# Mount the image locally using loop device
sudo losetup -P /dev/loop0 $IMAGE
sudo mkdir -p /mnt/armbian
sudo mount /dev/loop0p1 /mnt/armbian
# Backup kernel and boot files to current directory
sudo tar czf armbian-kernel.tar.gz -C /mnt/armbian \
boot/ \
lib/modules/ \
lib/firmware/
# Unmount
sudo umount /mnt/armbian
sudo losetup -d /dev/loop0
```
## Notes
- The kernel build uses Armbian's build system to generate a compatible kernel for the Odroid C4
- The RELEASE parameter doesn't affect kernel-only builds
- QEMU user-static emulation is required for cross-compilation on x86_64 hosts
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