Add build workflow
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..2ef481f
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,18 @@
+name: build
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: [ubuntu-latest, macos-latest]
+    steps:
+    - uses: actions/checkout@v1
+    - name: autogen
+      run: ./autogen.sh
+    - name: make
+      run: make
+    - name: make check
+      run: make check
+    - name: make distcheck
+      run: make distcheck
+