Build MacOS releases and explicitly specify task dependencies.

.github/workflows/release.yml

@@ -6,6 +6,7 @@ on:
       - "v*"
 
 jobs:
+
   build_linux:
     name: Build Linux
     runs-on: ubuntu-latest
@@ -27,9 +28,18 @@ jobs:
           choco install -y llvm
           cargo build --release
 
+  build_macos:
+    name: Build MacOS
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: |
+          cargo build --release
+
   publish_winrt_bindings:
     name: Publish winrt_bindings
     runs-on: windows-latest
+    needs: [build_windows]
     env:
       CARGO_TOKEN: ${{ secrets.CARGO_TOKEN }}
     steps:
@@ -44,6 +54,7 @@ jobs:
   publish:
     name: Publish
     runs-on: ubuntu-latest
+    needs: [build_linux, build_windows, build_macos]
     env:
       CARGO_TOKEN: ${{ secrets.CARGO_TOKEN }}
     steps: