anchor.diff:  
   # Benchmark is deactivated as the external project requires CMake 3.6+
   # Gandiva JNI is deactivated as it requires CMake 3.11+
  -# TODO(ARROW-4761): libzstd is too old and external project requires CMake 3.7+
   # - c-ares in Xenial isn't recognized by gRPC build system
   # - libprotobuf-dev / libprotoc-dev in Xenial too old for gRPC
   # - libboost-all-dev does not include Boost.Process, needed for Flight
  
positive.code:         liblz4-dev \
          libre2-dev \
          libssl-dev \
          llvm-${llvm}-dev \
          make \
          ninja-build \
  
negative.code:     ARROW_WITH_LZ4=ON \
      ARROW_WITH_SNAPPY=ON \
      ARROW_WITH_ZLIB=ON \
      ARROW_WITH_ZSTD=ON \
      BOOST_SOURCE=BUNDLED \
      cares_SOURCE=BUNDLED \
      CC=gcc \
  