.lgtm.yml

# By default, C/C++ extraction from LGTM.com uses Python 2
# Add this file to make it use Python 3
# Build protobuf from source with -fPIC is required here to prevent protobuf symbol error
extraction:
  cpp:
    before_index:
      # Always use Python 3
      - cp `which python3` $LGTM_WORKSPACE/python
      - PATH=$LGTM_WORKSPACE:$PATH
      # Build protobuf from source with -fPIC
      - git clone https://github.com/protocolbuffers/protobuf.git
      - cd protobuf
      - git checkout v3.16.0
      - git submodule update --init --recursive
      - mkdir build_source && cd build_source
      # Cannot use sudo so install locally at $HOME/protobuffers
      - cmake ../cmake -Dprotobuf_BUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=$HOME/protobuffers -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_POSITION_INDEPENDENT_CODE=ON -Dprotobuf_BUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release
      - make -j$(nproc)
      - make install
      - PATH=$HOME/protobuffers/bin:$PATH