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[WIP] Add support for LoongArch64 #111

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[WIP] Add support for LoongArch64 #111

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11 changes: 6 additions & 5 deletions BUILD.md
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Original file line number Diff line number Diff line change
Expand Up @@ -15,13 +15,14 @@ The chroot-based environment is designed for people who really do not want to us
To run a build, use the following command:

```sh
> env ALPINE_ARCH=<arch> chroot/chroot_build.sh
> env ALPINE_ARCH=<arch> scripts/chroot/chroot_build.sh

# example calls:
> env ALPINE_ARCH=x86_64 chroot/chroot_build.sh
> env ALPINE_ARCH=i686 chroot/chroot_build.sh
> env ALPINE_ARCH=armhf chroot/chroot_build.sh
> env ALPINE_ARCH=aarch64 chroot/chroot_build.sh
> env ALPINE_ARCH=x86_64 scripts/chroot/chroot_build.sh
> env ALPINE_ARCH=i686 scripts/chroot/chroot_build.sh
> env ALPINE_ARCH=armhf scripts/chroot/chroot_build.sh
> env ALPINE_ARCH=aarch64 scripts/chroot/chroot_build.sh
> env ALPINE_ARCH=loongarch64 scripts/chroot/chroot_build.sh
```

The script will download an Alpine miniroot image, extract it into a specific location, bind-mount a set of temporary filesystems (e.g., `/proc`) there, chroot into there and run the build script. It attempts to unmount the previously mounted paths again.
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2 changes: 2 additions & 0 deletions scripts/build-runtime.sh
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Expand Up @@ -42,6 +42,8 @@ elif [[ "$runtime" =~ EABI5 ]]; then
architecture=armhf
elif [[ "$runtime" =~ x86-64 ]]; then
architecture=x86_64
elif [[ "$runtime" =~ "64-bit .*, LoongArch" ]]; then
architecture=loongarch64
else
echo "Unsupported architecture: ${runtime#* }"
exit 2
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18 changes: 15 additions & 3 deletions scripts/chroot/chroot_build.sh
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Expand Up @@ -4,7 +4,7 @@ set -ex

if [ -z "${ALPINE_ARCH}" ]; then
echo "Usage: env ALPINE_ARCH=<arch> $0"
echo "Example values: x86_64 x86 armhf aarch64"
echo "Example values: x86_64 x86 armhf aarch64 loongarch64"
exit 2
fi

Expand Down Expand Up @@ -35,7 +35,14 @@ cd "$tempdir"
# Download and extract minimal Alpine system
#############################################

wget "http://dl-cdn.alpinelinux.org/alpine/v3.17/releases/${ALPINE_ARCH}/alpine-minirootfs-3.17.2-${ALPINE_ARCH}.tar.gz"
if [ "${ALPINE_ARCH}" = loongarch64 ]; then
alpine_version=3.21.0 # first version with support
else
alpine_version=3.17.2
fi

alpine_major_minor="${alpine_version%.*}"
wget "http://dl-cdn.alpinelinux.org/alpine/v${alpine_major_minor}/releases/${ALPINE_ARCH}/alpine-minirootfs-${alpine_version}-${ALPINE_ARCH}.tar.gz"
mkdir -p ./miniroot
cd ./miniroot
sudo tar xf ../alpine-minirootfs-*-"${ALPINE_ARCH}".tar.gz
Expand Down Expand Up @@ -72,6 +79,11 @@ elif [ "$ALPINE_ARCH" = "armhf" ] ; then
echo "Architecture is armhf, hence using qemu-arm-static"
sudo cp "$(which qemu-arm-static)" miniroot/usr/bin
sudo cp "$repo_root_dir"/scripts/chroot/build.sh miniroot/build.sh && sudo chroot miniroot qemu-arm-static /bin/sh -ex /scripts/chroot/build.sh
elif [ "$ALPINE_ARCH" = "loongarch64" ] ; then
echo "Architecture is loongarch64, hence using qemu-loongarch64-static"
sudo cp "$(which qemu-loongarch64-static)" miniroot/usr/bin
sudo cp "$repo_root_dir"/scripts/chroot/build.sh miniroot/build.sh && sudo chroot miniroot qemu-loongarch64-static /bin/sh -ex /scripts/chroot/build.sh

else
echo "Edit chroot_build.sh to support this architecture as well, it should be easy"
exit 1
Expand All @@ -94,4 +106,4 @@ esac
cd "$repo_root_dir"
mkdir -p ./out/
cp "${tempdir}/miniroot/out/runtime-${appimage_arch}" out/
cp "${tempdir}/miniroot/out/runtime-${appimage_arch}.debug" out/
cp "${tempdir}/miniroot/out/runtime-${appimage_arch}.debug" out/