feat: loongarch64 support

.github/workflows/build.yaml

@@ -35,6 +35,7 @@ jobs:
         - { qemu_arch: x86_64,  appimage_arch: x86_64 }
         - { qemu_arch: armv7,   appimage_arch: armhf }
         - { qemu_arch: aarch64, appimage_arch: aarch64 }
+        - { qemu_arch: loongarch64, appimage_arch: loongarch64 }
 
     steps:
     - name: Checkout
@@ -46,12 +47,21 @@ jobs:
            git rev-parse --short HEAD  | xargs >> src/runtime/version
 
     - name: Build
+      if:  ${{ matrix.appimage_arch }} != 'loongarch64'
       env:
         ARCHITECTURE: ${{ matrix.appimage_arch }}
       run: |
            sudo apt-get -y install qemu-user-static
            ./chroot_build.sh
 
+    - name: Build Loongarch
+      if:  ${{ matrix.appimage_arch }} == 'loongarch64'
+      env:
+        ARCHITECTURE: ${{ matrix.appimage_arch }}
+      run: |
+           docker run --rm --privileged loongcr.lcpu.dev/multiarch/archlinux --reset -p yes
+           ./build_loongarch64.sh
+
     - name: Sign
       env:
         SIGNING_KEY: ${{ secrets.SIGNING_KEY }}

.gitignore

@@ -50,3 +50,9 @@ modules.order
 Module.symvers
 Mkfile.old
 dkms.conf
+
+miniroot
+fuse-3.15.0
+out
+squa*
+*.tar.*

build.sh

@@ -2,6 +2,14 @@
 
 set -ex
 
+cleanup () {
+    tail -f /etc/issue
+    if [ -d "$build_dir" ]; then
+        rm -rf "$build_dir"
+    fi
+}
+trap cleanup EXIT
+
 if ! command -v apk; then
 	echo "This script should be run in an Alpine container"
 	exit 1
@@ -12,7 +20,9 @@ apk add alpine-sdk util-linux strace file autoconf automake libtool xz
 
 # Build static libfuse3 with patch for https://github.com/AppImage/type2-runtime/issues/10
 apk add eudev-dev gettext-dev linux-headers meson # From https://git.alpinelinux.org/aports/tree/main/fuse3/APKBUILD
-wget -c -q "https://github.com/libfuse/libfuse/releases/download/fuse-3.15.0/fuse-3.15.0.tar.xz"
+if [ ! -f "fuse-3.15.0.tar.xz" ];then
+	wget -c -q "https://github.com/libfuse/libfuse/releases/download/fuse-3.15.0/fuse-3.15.0.tar.xz"
+fi
 echo "70589cfd5e1cff7ccd6ac91c86c01be340b227285c5e200baa284e401eea2ca0  fuse-3.15.0.tar.xz" | sha256sum -c
 tar xf fuse-3.*.tar.xz
 cd fuse-3.*/
@@ -28,7 +38,7 @@ cd ../../
 export CFLAGS="-ffunction-sections -fdata-sections -Os"
 
 # Build static squashfuse
-apk add zstd-dev zlib-dev zlib-static # fuse3-dev fuse3-static fuse-static fuse-dev
+apk add zstd-dev zlib-dev zlib-static zstd-static # fuse3-dev fuse3-static fuse-static fuse-dev
 find / -name "libzstd.*" 2>/dev/null || true
 wget -c -q "https://github.com/vasi/squashfuse/archive/e51978c.tar.gz"
 echo "f544029ad30d8fbde4e4540c574b8cdc6d38b94df025a98d8551a9441f07d341  e51978c.tar.gz" | sha256sum -c
@@ -54,4 +64,4 @@ echo -ne 'AI\x02' | dd of=runtime-fuse3 bs=1 count=3 seek=8 conv=notrunc # magic
 cd -
 
 mkdir -p out
-cp src/runtime/runtime-fuse3 "out/runtime-fuse3-${ARCHITECTURE}"
+mv src/runtime/runtime-fuse3 "out/runtime-fuse3-${ARCHITECTURE}"

build_loongarch64.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -ex
+
+repo_root="$(readlink -f "$(dirname "${BASH_SOURCE[0]}")"/.)"
+image="msojocs/alpine-loongarch:240514"
+platform="linux/loong64"
+uid="$(id -u)"
+docker run \
+    --platform "$platform" \
+    --rm \
+    -i \
+    -e ARCH \
+    -e GITHUB_ACTIONS \
+    -e GITHUB_RUN_NUMBER \
+    -e OUT_UID="$uid" \
+    -v "$repo_root":/source \
+    -v "$PWD":/out \
+    -w /out \
+    "$image" \
+    sh -ex /source/build.sh

chroot_build_loongarch64.sh

@@ -0,0 +1,71 @@
+#!/bin/sh
+
+set -ex
+
+#############################################
+# Download and extract minimal Alpine system
+#############################################
+if [ ! -f "alpine-minirootfs-edge-240514-loongarch64.tar.gz" ]; then
+    wget "https://dev.alpinelinux.org/~loongarch/edge/releases/loongarch64/alpine-minirootfs-edge-240514-loongarch64.tar.gz"
+fi
+if [ ! -z "$(ls -A miniroot/proc)" ]; then
+    sudo umount miniroot/proc miniroot/sys miniroot/dev
+fi
+sudo rm -rf ./miniroot  true # Clean up from previous runs
+mkdir -p ./miniroot
+cd ./miniroot
+sudo tar xf ../alpine-minirootfs-*-"${ARCHITECTURE}".tar.gz
+cd -
+
+#############################################
+# Prepare chroot
+#############################################
+
+sudo cp -r ./src miniroot/src
+sudo cp -r ./patches miniroot/patches
+
+sudo mount -o bind /dev miniroot/dev
+sudo mount -t proc none miniroot/proc
+sudo mount -t sysfs none miniroot/sys
+sudo cp -p /etc/resolv.conf miniroot/etc/
+
+#############################################
+# Run build.sh in chroot
+#############################################
+
+if [ "$ARCHITECTURE" = "x86" ] || [ "$ARCHITECTURE" = "x86_64" ]; then
+    echo "Architecture is x86 or x86_64, hence not using qemu-arm-static"
+    sudo cp build.sh miniroot/build.sh && sudo chroot miniroot /bin/sh -ex /build.sh
+elif [ "$ARCHITECTURE" = "aarch64" ] ; then
+    echo "Architecture is aarch64, hence using qemu-aarch64-static"
+    sudo cp "$(which qemu-aarch64-static)" miniroot/usr/bin
+    sudo cp build.sh miniroot/build.sh && sudo chroot miniroot qemu-aarch64-static /bin/sh -ex /build.sh
+elif [ "$ARCHITECTURE" = "armhf" ] ; then
+    echo "Architecture is armhf, hence using qemu-arm-static"
+    sudo cp "$(which qemu-arm-static)" miniroot/usr/bin
+    sudo cp build.sh miniroot/build.sh && sudo chroot miniroot qemu-arm-static /bin/sh -ex /build.sh
+elif [ "$ARCHITECTURE" = "loongarch64" ] ; then
+    echo "Architecture is loongarch64, hence using qemu-loongarch64-static"
+    sudo cp "$(which qemu-loongarch64-static)" miniroot/usr/bin
+    sudo cp build.sh miniroot/build.sh && sudo chroot miniroot qemu-loongarch64-static /bin/sh -ex /build.sh
+else
+    echo "Edit chroot_build.sh to support this architecture as well, it should be easy"
+    exit 1
+fi
+
+#############################################
+# Clean up chroot
+#############################################
+
+sudo umount miniroot/proc miniroot/sys miniroot/dev
+
+#############################################
+# Copy build artefacts out
+#############################################
+
+# Use the same architecture names as https://github.com/AppImage/AppImageKit/releases/
+if [ "$ARCHITECTURE" = "x86" ] ; then ARCHITECTURE=i686 ; fi
+
+mkdir out/
+sudo find miniroot/ -type f -executable -name 'runtime-fuse3' -exec cp {} "out/runtime-${ARCHITECTURE}" \;
+sudo rm -rf miniroot/