ci: use cargo-cross for multi-arch testing

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I6f5fac0de48162e114976da3aa5adf216a6a6964

.github/workflows/rust.yml

@@ -12,15 +12,14 @@ env:
 jobs:
   test:
     name: Test on ${{ matrix.target }}
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - os: ubuntu-latest
-            target: x86_64-unknown-linux-gnu
-          - os: ubuntu-latest
-            target: aarch64-unknown-linux-gnu
+        target:
+          - x86_64-unknown-linux-gnu
+          - aarch64-unknown-linux-gnu
+          - riscv64gc-unknown-linux-gnu
 
     steps:
     - name: "Checkout"
@@ -31,24 +30,12 @@ jobs:
       with:
         target: ${{ matrix.target }}
 
-    - name: "Install cross-compilation tools"
-      if: matrix.target == 'aarch64-unknown-linux-gnu'
-      run: |
-        sudo apt-get update
-        sudo apt-get install -y gcc-aarch64-linux-gnu
-
-    - name: "Configure linker for aarch64"
-      if: matrix.target == 'aarch64-unknown-linux-gnu'
-      run: |
-        mkdir -p .cargo
-        cat >> .cargo/config.toml << EOF
-        [target.aarch64-unknown-linux-gnu]
-        linker = "aarch64-linux-gnu-gcc"
-        EOF
+    - name: "Install cross"
+      run: cargo install cross --git https://github.com/cross-rs/cross
 
     - name: "Build"
-      run: cargo build --verbose --target ${{ matrix.target }}
+      run: cross build --verbose --target ${{ matrix.target }}
 
     - name: "Run tests"
       if: matrix.target == 'x86_64-unknown-linux-gnu'
-      run: cargo test --verbose --target ${{ matrix.target }}
+      run: cross test --verbose --target ${{ matrix.target }}