feat(bindings/dotnet): build and package the linux-arm64 native library

.github/workflows/ci_bindings_dotnet.yml

@@ -70,6 +70,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
+          - ubuntu-24.04-arm
           - macos-latest
           - windows-latest
     steps:

.github/workflows/release_dotnet.yml

@@ -52,6 +52,9 @@ jobs:
           - os: ubuntu-latest
             classifier: linux-x86_64
             artifact: libopendal_dotnet.so
+          - os: ubuntu-24.04-arm
+            classifier: linux-aarch_64
+            artifact: libopendal_dotnet.so
           - os: windows-latest
             classifier: windows-x86_64
             artifact: opendal_dotnet.dll
@@ -98,23 +101,27 @@ jobs:
         with:
           dotnet-version: "10.0.x"
 
+      # Keep one directory per artifact: the Linux x64 and Linux arm64 builds
+      # share the libopendal_dotnet.so file name, so merging them into a single
+      # directory would drop one of the two libraries.
       - name: Download native artifacts
         uses: actions/download-artifact@v8
         with:
           pattern: native-*
-          merge-multiple: true
           path: bindings/dotnet/target/release-assets
 
       - name: Prepare runtime assets
         shell: bash
         run: |
           mkdir -p OpenDAL/runtimes/win-x64/native
           mkdir -p OpenDAL/runtimes/linux-x64/native
+          mkdir -p OpenDAL/runtimes/linux-arm64/native
           mkdir -p OpenDAL/runtimes/osx-arm64/native
 
-          cp target/release-assets/opendal_dotnet.dll OpenDAL/runtimes/win-x64/native/
-          cp target/release-assets/libopendal_dotnet.so OpenDAL/runtimes/linux-x64/native/
-          cp target/release-assets/libopendal_dotnet.dylib OpenDAL/runtimes/osx-arm64/native/
+          cp target/release-assets/native-windows-x86_64/opendal_dotnet.dll OpenDAL/runtimes/win-x64/native/
+          cp target/release-assets/native-linux-x86_64/libopendal_dotnet.so OpenDAL/runtimes/linux-x64/native/
+          cp target/release-assets/native-linux-aarch_64/libopendal_dotnet.so OpenDAL/runtimes/linux-arm64/native/
+          cp target/release-assets/native-osx-aarch_64/libopendal_dotnet.dylib OpenDAL/runtimes/osx-arm64/native/
 
       - name: Determine version suffix
         id: version

bindings/dotnet/OpenDAL/OpenDAL.csproj

@@ -53,6 +53,9 @@
         <None Include="runtimes\linux-x64\native\libopendal_dotnet.so"
             Pack="true"
             PackagePath="runtimes/linux-x64/native/" />
+        <None Include="runtimes\linux-arm64\native\libopendal_dotnet.so"
+            Pack="true"
+            PackagePath="runtimes/linux-arm64/native/" />
         <None Include="runtimes\osx-arm64\native\libopendal_dotnet.dylib"
             Pack="true"
             PackagePath="runtimes/osx-arm64/native/" />

bindings/dotnet/build.py

@@ -29,6 +29,8 @@ def classifier_to_target(classifier: str) -> str:
         return "aarch64-apple-darwin"
     if classifier == "linux-x86_64":
         return "x86_64-unknown-linux-gnu"
+    if classifier == "linux-aarch_64":
+        return "aarch64-unknown-linux-gnu"
     if classifier == "windows-x86_64":
         return "x86_64-pc-windows-msvc"
     raise Exception(f"Unsupported classifier: {classifier}")
@@ -37,7 +39,7 @@ def classifier_to_target(classifier: str) -> str:
 def get_cargo_artifact_name(classifier: str) -> str:
     if classifier == "osx-aarch_64":
         return "libopendal_dotnet.dylib"
-    if classifier == "linux-x86_64":
+    if classifier == "linux-x86_64" or classifier == "linux-aarch_64":
         return "libopendal_dotnet.so"
     if classifier == "windows-x86_64":
         return "opendal_dotnet.dll"