Simple build check

.github/workflows/build.yml

@@ -0,0 +1,19 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{matrix.os}}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          path: uvm32
+      - name: Build
+        run: make
+        working-directory: uvm32
+