tmp: test aarch64-linux

.github/workflows/build.yml

@@ -13,7 +13,13 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        include:
+          - os: ubuntu-latest
+          - os: macos-latest
+          - os: windows-latest
+          - os: ubuntu-latest
+            cross: aarch64-unknown-linux-gnu
+
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
@@ -29,6 +35,12 @@ jobs:
       if: runner.os == 'Windows'
       uses: ilammy/setup-nasm@v1
 
+    - name: Install cross
+      if: matrix.cross != ''
+      uses: taiki-e/setup-cross-toolchain-action@v1
+      with:
+        target: ${{ matrix.cross }}
+
     - name: Build (debug)
       run: cargo build -p graviola
     - name: Run tests (debug)
@@ -40,7 +52,7 @@ jobs:
       run: cargo test --release
 
     - name: Artificial CPU feature tests (x86_64)
-      if: runner.os == 'Linux'
+      if: runner.os == 'Linux' && matrix.cargo == 'cargo'
       run: |
         # test software fallbacks for sha256 and sha512
         env GRAVIOLA_CPU_DISABLE_sha=1 GRAVIOLA_CPU_DISABLE_bmi2=1 cargo test