Checkout submodules

Author: jcansdale

.github/workflows/main.yml

@@ -24,8 +24,10 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-    - uses: actions/checkout@v2
-      
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+
     - name: Add msbuild to PATH
       uses: microsoft/[email protected]