CI: add Github CI jobs for Windows, MacOS, code coverage and CodeQL

.github/workflows/per_commit.yml

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+name: "CI"
+
+on: [push]
+jobs:
+  Ubuntu:
+    runs-on: ubuntu-latest
+    outputs:
+      cache_misses: ${{ steps.ccache_results.outputs.cache_misses }}
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install required packages
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install apt-utils
+          sudo apt-get -y install git gcc g++ cmake python make ninja-build
+          sudo apt-get -y install tcpdump libgsl-dev libxml2-dev
+          sudo apt-get -y install curl unzip tar
+          sudo apt-get -y install ccache
+      - name: Get timestamp
+        id: time
+        run: python3 -c "from datetime import datetime; print('::set-output name=time::'+datetime.now().strftime('%Y-%m-%d-%H-%M-%S'))"
+      - name: Restore ccache
+        id: ccache
+        uses: actions/cache@v1.1.0
+        with:
+          path: .ccache
+          key: ubuntu-ci-${{steps.time.outputs.time}}
+          restore-keys: ubuntu-ci-
+      - name: Setup ccache
+        run: |
+          ccache --set-config=cache_dir="$GITHUB_WORKSPACE/.ccache"
+          ccache --set-config=max_size=400M
+          ccache --set-config=compression=true
+          ccache -z
+      - name: Configure CMake
+        run: |
+          mkdir cmake-cache
+          cd cmake-cache
+          cmake -DCMAKE_BUILD_TYPE=release -DNS3_EXAMPLES=ON -DNS3_TESTS=ON -DNS3_WARNINGS_AS_ERRORS=OFF -G"Ninja"  ..
+      - name: Build ns-3
+        run: |
+          cd cmake-cache
+          ninja
+      - name: Print ccache statistics
+        id: ccache_results
+        run: |
+          ccache -s
+          python3 -c "import re, subprocess;print('::set-output name=cache_misses::%d' % int(re.findall('cache_miss(.*)', subprocess.check_output(['ccache', '--print-stats']).decode())[0]))"
+      - name: Run tests and examples
+        if: steps.ccache_results.outputs.cache_misses != '0'
+        run: python3 test.py --no-build
+
+  CodeQL:
+    runs-on: ubuntu-latest
+    needs: Ubuntu
+    if: needs.Ubuntu.outputs.cache_misses != '0'
+    strategy:
+      fail-fast: false
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: 'cpp'
+      - name: Install required packages
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install apt-utils
+          sudo apt-get -y install git gcc g++ cmake python make ninja-build
+          sudo apt-get -y install tcpdump libgsl-dev libxml2-dev
+          sudo apt-get -y install curl unzip tar
+          sudo apt-get -y install ccache
+      - name: Get timestamp
+        id: time
+        run: python3 -c "from datetime import datetime; print('::set-output name=time::'+datetime.now().strftime('%Y-%m-%d-%H-%M-%S'))"
+      - name: Restore ccache
+        id: ccache
+        uses: actions/cache@v1.1.0
+        with:
+          path: .ccache
+          key: ubuntu-ci-${{steps.time.outputs.time}}
+          restore-keys: ubuntu-ci-
+      - name: Setup ccache
+        run: |
+          ccache --set-config=cache_dir="$GITHUB_WORKSPACE/.ccache"
+          ccache --set-config=max_size=400M
+          ccache --set-config=compression=true
+          ccache -z
+      - name: Configure CMake
+        run: |
+          mkdir cmake-cache
+          cd cmake-cache
+          cmake -DCMAKE_BUILD_TYPE=release -DNS3_EXAMPLES=ON -DNS3_TESTS=ON -DNS3_WARNINGS_AS_ERRORS=OFF -G"Ninja"  ..
+      - name: Build ns-3
+        run: |
+          cd cmake-cache
+          ninja
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+
+  Codecov:
+    runs-on: ubuntu-latest
+    needs: Ubuntu
+    if: needs.Ubuntu.outputs.cache_misses != '0'
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install required packages
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install apt-utils
+          sudo apt-get -y install git gcc g++ cmake python3 make ninja-build
+          sudo apt-get -y install tcpdump libgsl-dev libxml2-dev
+          sudo apt-get -y install curl unzip tar
+          sudo apt-get -y install ccache
+          sudo apt-get -y install lcov
+      - name: Get timestamp
+        id: time
+        run: python3 -c "from datetime import datetime; print('::set-output name=time::'+datetime.now().strftime('%Y-%m-%d-%H-%M-%S'))"
+      - name: Restore ccache
+        id: ccache
+        uses: actions/cache@v1.1.0
+        with:
+          path: .ccache
+          key: ubuntu-coverage-${{steps.time.outputs.time}}
+          restore-keys: ubuntu-coverage-
+      - name: Setup ccache
+        run: |
+          ccache --set-config=cache_dir="$GITHUB_WORKSPACE/.ccache"
+          ccache --set-config=max_size=400M
+          ccache --set-config=compression=true
+          ccache -z
+      - name: Configure CMake
+        run: |
+          mkdir cmake-cache
+          cd cmake-cache
+          cmake -DCMAKE_BUILD_TYPE=relwithdebinfo -DNS3_EXAMPLES=ON -DNS3_TESTS=ON -DNS3_COVERAGE=ON -DNS3_WARNINGS_AS_ERRORS=OFF -G"Ninja"  ..
+      - name: Build ns-3
+        run: |
+          cd cmake-cache
+          cmake --build . -j3
+      - name: Print ccache statistics
+        id: ccache_results
+        run: |
+          ccache -s
+          python3 -c "import re, subprocess;print('::set-output name=cache_misses::%d' % int(re.findall('cache_miss(.*)', subprocess.check_output(['ccache', '--print-stats']).decode())[0]))"
+      - name: Generate coverage data and submit to codecov.io
+        if: steps.ccache_results.outputs.cache_misses != '0'
+        run: |
+          cd cmake-cache
+          ninja coverage_gcc
+          cd ../build/coverage
+          bash <(curl -s https://codecov.io/bash) -f ns3.info || echo "Codecov did not collect coverage reports"
+
+  Windows_MinGW:
+    runs-on: windows-latest
+    defaults:
+      run:
+        shell: msys2 {0}
+    steps:
+      - uses: actions/checkout@v1
+      - uses: msys2/setup-msys2@v2
+      - name: Install required msys2/mingw64 packages
+        run: |
+          pacman -S --noconfirm unzip
+          pacman -S --noconfirm tar
+          pacman -S --noconfirm mingw-w64-x86_64-curl
+          pacman -S --noconfirm mingw-w64-x86_64-binutils
+          pacman -S --noconfirm mingw-w64-x86_64-cmake
+          pacman -S --noconfirm mingw-w64-x86_64-gcc
+          pacman -S --noconfirm mingw-w64-x86_64-ninja
+          pacman -S --noconfirm mingw-w64-x86_64-python
+          pacman -S --noconfirm mingw-w64-x86_64-ccache
+          pacman -S --noconfirm mingw-w64-x86_64-gsl
+          pacman -S --noconfirm mingw-w64-x86_64-libxml2
+          pacman -S --noconfirm mingw-w64-x86_64-lld
+          pacman --noconfirm -Scc
+      - name: Get timestamp
+        id: time
+        run: python -c "from datetime import datetime; print('::set-output name=time::'+datetime.now().strftime('%Y-%m-%d-%H-%M-%S'))"
+      - name: Restore ccache
+        id: ccache
+        uses: actions/cache@v1.1.0
+        with:
+          path: .ccache
+          key: msys2-${{steps.time.outputs.time}}
+          restore-keys: msys2-
+      - name: Setup ccache
+        run: |
+          ccache --set-config=cache_dir="$GITHUB_WORKSPACE/.ccache"
+          ccache --set-config=max_size=400M
+          ccache --set-config=compression=true
+          ccache -z
+      - name: Configure CMake
+        run: |
+          mkdir cmake-cache
+          cd cmake-cache
+          cmake -DCMAKE_BUILD_TYPE=release -DNS3_EXAMPLES=ON -DNS3_TESTS=ON -DNS3_WARNINGS_AS_ERRORS=OFF -G"Ninja" ..
+      - name: Build ns-3
+        run: |
+          cd cmake-cache
+          ninja
+      - name: Print ccache statistics
+        id: ccache_results
+        run: |
+          ccache -s
+          python3 -c "import re, subprocess;print('::set-output name=cache_misses::%d' % int(re.findall('cache_miss(.*)', subprocess.check_output(['ccache', '--print-stats']).decode())[0]))"
+      - name: Run tests and examples
+        if: steps.ccache_results.outputs.cache_misses != '0'
+        run: python test.py --no-build
+
+  Mac_OS_X:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install required packages
+        run: |
+          brew install ninja cmake ccache libxml2 gsl open-mpi #qt5
+      - name: Get timestamp
+        id: time
+        run: python3 -c "from datetime import datetime; print('::set-output name=time::'+datetime.now().strftime('%Y-%m-%d-%H-%M-%S'))"
+      - name: Restore ccache
+        id: ccache
+        uses: actions/cache@v1.1.0
+        with:
+          path: .ccache
+          key: osx_brew-ci-${{steps.time.outputs.time}}
+          restore-keys: osx_brew-ci-
+      - name: Setup ccache
+        run: |
+          export PATH=/usr/local/bin:$PATH #:/usr/local/opt/qt/bin
+          ccache --set-config=cache_dir="$GITHUB_WORKSPACE/.ccache"
+          ccache --set-config=max_size=400M
+          ccache --set-config=compression=true
+          ccache -z
+      - name: Configure CMake
+        run: |
+          export PATH=/usr/local/bin:$PATH #:/usr/local/opt/qt/bin
+          mkdir cmake-cache
+          cd cmake-cache
+          cmake -DCMAKE_BUILD_TYPE=release -DNS3_EXAMPLES=ON -DNS3_TESTS=ON -DNS3_WARNINGS_AS_ERRORS=OFF -G"Ninja" ..
+      - name: Build ns-3
+        run: |
+          export PATH="$PATH" #:/usr/local/opt/qt/bin
+          cd cmake-cache
+          ninja
+      - name: Print ccache statistics
+        id: ccache_results
+        run: |
+          ccache -s
+          python3 -c "import re, subprocess;print('::set-output name=cache_misses::%d' % int(re.findall('cache_miss(.*)', subprocess.check_output(['ccache', '--print-stats']).decode())[0]))"
+      - name: Run tests and examples
+        if: steps.ccache_results.outputs.cache_misses != '0'
+        run: python3 test.py --no-build