use the right compiler and prepare for crosscompiling

[m1-debian] / gpu.sh

#!/usr/bin/env bash

# SPDX-License-Identifier: MIT

set -o errexit
set -o nounset
set -o pipefail
set -o xtrace

cd "$(dirname "$0")"

unset LC_CTYPE
unset LANG

handle_crosscompile()
{
        if [ "`uname -m`" != 'aarch64' ]; then
                export ARCH=arm64
                export CROSS_COMPILE=aarch64-linux-gnu-
                export DEBOOTSTRAP=qemu-debootstrap
                sudo apt install -y libc6-dev-arm64-cross
        fi
}

build_linux()
{
(
        test -d linux || git clone https://github.com/AsahiLinux/linux
        cd linux
        git fetch -a -t
        git reset --hard asahi-6.1-rc8-3;
        source "$HOME/.cargo/env"
        cat ../../config-gpu.txt > .config
        make LLVM=-14 olddefconfig
        make -j `nproc` LLVM=-14 V=0 bindeb-pkg > /dev/null
)
}

build_m1n1()
{
(
        test -d m1n1 || git clone --recursive https://github.com/AsahiLinux/m1n1
        cd m1n1
        git fetch -a -t
        git reset --hard v1.2.2;
        make -j `nproc`
)
}

build_uboot()
{
(
        test -d u-boot || git clone https://github.com/AsahiLinux/u-boot
        cd u-boot
        git fetch -a -t
        git reset --hard asahi-v2022.10-1;

        make apple_m1_defconfig
        make -j `nproc`
)
        cat m1n1/build/m1n1.bin   `find linux/arch/arm64/boot/dts/apple/ -name \*.dtb` <(gzip -c u-boot/u-boot-nodtb.bin) > u-boot.bin
}

mkdir -p build
cd build

handle_crosscompile
build_linux
build_m1n1
build_uboot