CI using GH Actions

.github/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        cc: [ gcc-10, gcc-11, clang-13, clang-14 ]
+    env: 
+      PREFIX: /usr/local/bin
+      CC: ${{ matrix.cc }}
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: CC ver
+      run: ${CC} -v
+    - name: make
+      run: make
+    - name: make install
+      run: sudo make install
+    - name: ldd
+      run: ldd $PREFIX/mdp
+    - name: version
+      run: $PREFIX/mdp -v
+