Create make.yml

.github/workflows/make.yml

@@ -0,0 +1,17 @@
+name: C/C++ CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, ubuntu-latest]
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+    - name: make
+      run: make all