Add macOS GH runner to test darwin/aarch64 build

.github/workflows/build.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
+  linux:
     runs-on: ubuntu-24.04
     steps:
       - name: Install dependencies
@@ -55,3 +55,62 @@ jobs:
         run: |
           cd malva
           JAVA=/usr/local/jamvm/bin/jamvm make check
+
+  macos:
+    runs-on: macos-15
+    steps:
+      - name: Install dependencies
+        run: |
+          brew install automake libtool texinfo
+          echo "$(brew --prefix libtool)/libexec/gnubin" >> $GITHUB_PATH
+          # Work around https://github.com/Homebrew/homebrew-core/issues/53192
+          ln -sf "$(brew --prefix gettext)/share/gettext/m4/"*.m4 "$(aclocal --print-ac-dir)/"
+
+      - name: Set up Java 8
+        uses: actions/setup-java@v5
+        with:
+          distribution: zulu
+          java-version: '8.0.482+8'
+          check-latest: false
+
+      - name: Check out Classpath
+        uses: actions/checkout@v4
+
+      - name: Build GNU Classpath
+        run: |
+          ./autogen.sh
+          ./configure \
+            --disable-gconf-peer \
+            --enable-default-preferences-peer=file \
+            --disable-gtk-peer \
+            --disable-alsa \
+            --disable-dssi \
+            --disable-plugin \
+            --disable-examples \
+            --disable-tools \
+            --disable-gjdoc
+          make && sudo make install
+
+      - name: Check out JamVM
+        uses: actions/checkout@v4
+        with:
+          repository: ingelabs/jamvm
+          path: jamvm
+
+      - name: Build JamVM
+        run: |
+          cd jamvm
+          NOCONFIGURE=1 ./autogen.sh
+          ./configure
+          make && sudo make install
+
+      - name: Check out Malva
+        uses: actions/checkout@v4
+        with:
+          repository: ingelabs/malva
+          path: malva
+
+      - name: Run tests
+        run: |
+          cd malva
+          JAVA=/usr/local/jamvm/bin/jamvm make check