Add aarch64 Linux support (DGX Spark / GB10) (#51)

* Add aarch64 Linux support (DGX Spark / GB10)

- Add aarch64-unknown-linux-gnu build target to the release workflow
- Add .cargo/config.toml to configure the cross-linker for aarch64
- Update install.sh to detect arm64/aarch64 and download the correct binary
  (popcorn-cli-linux-aarch64.tar.gz) instead of the x86-64 build

* validate arm64 installer in CI

* move arm64 validation into test workflow

* fold arm64 into test matrix

* build arm64 release on native runner

---------

Co-authored-by: brandonin <brandonin@users.noreply.github.com>
Co-authored-by: Mark Saroufim <marksaroufim@gmail.com>

Author: brandonin

.github/workflows/build.yml

@@ -58,6 +58,13 @@ jobs:
             compress_cmd: tar -czf
             compress_ext: .tar.gz
 
+          - os: ubuntu-24.04-arm
+            target: aarch64-unknown-linux-gnu
+            artifact_name: popcorn-cli
+            asset_name: popcorn-cli-linux-aarch64.tar.gz
+            compress_cmd: tar -czf
+            compress_ext: .tar.gz
+
     steps:
       - uses: actions/checkout@v4
 
@@ -72,12 +79,6 @@ jobs:
         with:
           key: ${{ matrix.target }}
 
-      - name: Install cross-compilation dependencies (Linux ARM)
-        if: matrix.target == 'aarch64-unknown-linux-gnu'
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y gcc-aarch64-linux-gnu
-
       - name: Install musl tools (Linux musl)
         if: matrix.target == 'x86_64-unknown-linux-musl'
         run: |
@@ -126,6 +127,7 @@ jobs:
           name: Release ${{ needs.version.outputs.new_tag }}
           files: |
             popcorn-cli-linux.tar.gz/popcorn-cli-linux.tar.gz
+            popcorn-cli-linux-aarch64.tar.gz/popcorn-cli-linux-aarch64.tar.gz
             popcorn-cli-windows.zip/popcorn-cli-windows.zip
             popcorn-cli-macos.tar.gz/popcorn-cli-macos.tar.gz
         env:

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, ubuntu-24.04-arm, macos-latest, windows-latest]
         rust: [stable]
 
     steps:

install.sh

@@ -28,7 +28,12 @@ SYMLINK_NAME=""
 EXTENSION=""
 
 if [[ "$OSTYPE" == "linux-gnu"* ]]; then
-    OS="linux"
+    ARCH=$(uname -m)
+    if [[ "$ARCH" == "aarch64" || "$ARCH" == "arm64" ]]; then
+        OS="linux-aarch64"
+    else
+        OS="linux"
+    fi
     EXTENSION=".tar.gz"
     BINARY_NAME="popcorn-cli"
     SYMLINK_NAME="popcorn"
@@ -47,7 +52,7 @@ else
     exit 1
 fi
 
-echo "✅ Detected OS: $OS"
+echo "✅ Detected OS: $OS ($(uname -m))"
 
 # Download URL
 DOWNLOAD_URL="https://github.com/gpu-mode/popcorn-cli/releases/latest/download/popcorn-cli-${OS}${EXTENSION}"
@@ -149,4 +154,4 @@ echo "   - ✅ All modes available: test, benchmark, leaderboard, profile"
 echo "   - ✅ Clean user identification"
 echo ""
 echo "💡 Need help? Run: popcorn-cli --help"
-echo "🔗 Example: popcorn-cli submit --gpu MI300 --leaderboard amd-fp8-mm --mode test example.py" 
+echo "🔗 Example: popcorn-cli submit --gpu MI300 --leaderboard amd-fp8-mm --mode test example.py"