#!/bin/bash

# SPDX-License-Identifier: MIT

set -x
set -e

unset LC_CTYPE
unset LANG

export DEBOOTSTRAP=debootstrap

handle_crosscompile()
{
        if [ "`uname -m`" != 'aarch64' ]; then
                export ARCH=arm64
                export CROSS_COMPILE=aarch64-linux-gnu-
                export DEBOOTSTRAP=qemu-debootstrap
        fi
}

build_linux()
{
(
        handle_crosscompile
        test -d linux || git clone --depth 1 https://github.com/AsahiLinux/linux -b asahi
        cd linux
        git fetch
        git reset --hard origin/asahi; git clean -f -x -d &> /dev/null
        curl -s https://tg.st/u/40c9642c7569c52189f84621316fc9149979ee65.patch | git am -
        curl -s https://tg.st/u/0001-4k-iommu-patch-2022-03-11.patch | git am -
        curl -s https://tg.st/u/0001-try-to-reproduce-svens-regression.patch | git am -
        curl -s https://tg.st/u/0001-13-37-sven-Glanzmann-can-you-try-what-happens-when-y.patch | git am -
        curl -s https://tg.st/u/config-2022-03-15-4k > .config
        make olddefconfig
        make -j `nproc` V=0 bindeb-pkg > /dev/null
)
}

mkdir -p build
cd build

build_linux