Merge remote-tracking branch 'km_origin/master' into v2

.github/workflows/c-cpp.yml

@@ -0,0 +1,25 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ ubuntu-16.04, ubuntu-latest ]
+        php: [ '7.4', '8.0' ]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php }}
+    - name: make
+      run: make
+    - name: make install
+      run: sudo make install