Add Proto3 Test Builds

Signed-off-by: Pierre R. Mai <pmai@pmsf.de>
Signed-off-by: Habedank Clemens <qxs2704@europe.bmw.corp>

Author: pmai

.github/workflows/protobuf.yml

@@ -83,3 +83,66 @@ jobs:
         path: doc/html
         if-no-files-found: error
 
+  build-proto3-linux64:
+    name: Build Proto3 Linux 64
+
+    runs-on: ubuntu-18.04
+
+    steps:
+    - name: Checkout OSI
+      uses: actions/checkout@v2
+      with:
+        submodules: true
+
+    - name: Setup Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.7'
+
+    - name: Install Python Dependencies
+      run: python -m pip install --upgrade pip setuptools wheel pyyaml
+
+    - name: Cache Dependencies
+      id: cache-depends
+      uses: actions/cache@v2
+      with:
+        path: protobuf-3.11.3
+        key: ${{ runner.os }}-v1-depends
+
+    - name: Download ProtoBuf
+      if: steps.cache-depends.outputs.cache-hit != 'true'
+      run: curl -OL https://github.com/protocolbuffers/protobuf/releases/download/v3.11.3/protobuf-all-3.11.3.tar.gz && tar xzvf protobuf-all-3.11.3.tar.gz
+
+    - name: Build ProtoBuf
+      if: steps.cache-depends.outputs.cache-hit != 'true'
+      working-directory: protobuf-3.11.3
+      run: ./configure DIST_LANG=cpp --prefix=/usr && make
+
+    - name: Install ProtoBuf
+      working-directory: protobuf-3.11.3
+      run: sudo make install && sudo ldconfig
+
+    - name: Prepare C++ Build
+      run: mkdir build
+
+    - name: Switch to Proto3 Syntax
+      run: |
+        bash convert-to-proto3.sh
+        rm *.pb2
+
+    - name: Configure C++ Build
+      working-directory: build
+      run: cmake ..
+
+    - name: Build C++
+      working-directory: build
+      run: cmake --build . --config Release -j 4
+
+    - name: Build Python
+      run: python setup.py build && python setup.py sdist 
+
+    - name: Install Python
+      run: python -m pip install .
+
+    - name: Run Python Tests
+      run: python -m unittest discover tests