ci: enable arm64 macOS builds

.github/workflows/build.yml

@@ -719,7 +719,13 @@ jobs:
   macOS:
     strategy:
       matrix:
-        os: [{id: macos-12, label: "12/x86_64"}]
+        os:
+          - id: macos-12
+            label: "12/x86_64"
+            arch_triplet: x64-osx
+          - id: macos-13-xlarge
+            label: "13/arm64"
+            arch_triplet: arm64-osx
     runs-on: ${{ matrix.os.id }}
     name: macOS ${{ matrix.os.label }}
 
@@ -735,6 +741,7 @@ jobs:
     env:
       CCACHE_DIR: ${{ github.workspace }}/.cache/ccache
       CCACHE_COMPRESS: "1"
+      ARCH_TRIPLET: ${{ matrix.os.arch_triplet }}
       HOMEBREW_CACHE: ${{ github.workspace }}/.cache/brew
       HOMEBREW_NO_INSTALL_CLEANUP: "1"
       MACOS_CODESIGN_ID: ${{ secrets.MACOS_CODESIGN_ID }}
@@ -790,7 +797,7 @@ jobs:
 
       - name: "setup: misc"
         run: |
-          brew install -q autoconf automake ccache pandoc pkg-config
+          brew install -q autoconf automake ccache pandoc pkg-config libtool
           mkdir -p ${{ env.CCACHE_DIR }}
           echo "$(brew --prefix)/opt/ccache/libexec" >> $GITHUB_PATH
 
@@ -959,7 +966,7 @@ jobs:
           sudo installer -pkg build/dist/Kart-*.pkg -dumplog -target /
           readlink $(which kart)
           # make sure good sqlite is in path
-          export PATH="$(pwd)/build/vcpkg_installed/x64-osx/tools:$PATH"
+          export PATH="$(pwd)/build/vcpkg_installed/${{ env.ARCH_TRIPLET }}-osx/tools:$PATH"
           tests/scripts/e2e-1.sh
 
       - name: "release"