image: gcc

variables:
  # Set `CCACHE_BASEDIR` and `CCACHE_DIR` to point `ccache` towards the cached
  # path on the gitlab-runner. This enables to cache the output of `ccache`
  # between various runs.
  CCACHE_BASEDIR: "${CI_PROJECT_DIR}"
  CCACHE_DIR: "${CI_PROJECT_DIR}/ccache"
  # Set `ccache` to `content` to prevent rebuilding of the CI/CD containers to
  # trigger a recreate of the cache. By using `content` the compiler's `mtime`
  # is not considered as part of the hash.
  CCACHE_COMPILERCHECK: "content"
  # Enable caching for `apt-get`.
  APT_CACHE_DIR: "${CI_PROJECT_DIR}/apt-cache"
  # Export `noninteractive` frontend to prevent requesting user input.
  DEBIAN_FRONTEND: "noninteractive"

build-and-test:
  stage: build
  cache:
    # Cache is shared between branches, but has a unique cache per job.
    key: dereko2vec
    paths:
      # Note: directories should align with `$APT_CACHE_DIR` and `$CCACHE_DIR`.
      - apt-cache/
      - ccache/

  before_script:
    - pwd
    - source `find .. -name section_helper.sh`

    - start_section install_linux_packages "Installing missing Linux packages"
    - mkdir -pv $APT_CACHE_DIR ccache
    - apt-get update && apt-get -o dir::cache::archives="$APT_CACHE_DIR" -y install ccache cmake librocksdb-dev libgflags-dev libsnappy-dev zlib1g-dev libbz2-dev liblz4-dev libzstd-dev libomp-dev
    # ccache only makes the build faster, it must never be able to make it fail,
    # so everything that uses it is guarded and CCACHE_OPTS stays empty without it
    - if CCACHE=$(command -v ccache); then ln -sf "$CCACHE" /usr/local/sbin/gcc && ln -sf "$CCACHE" /usr/local/sbin/g++ && CCACHE_OPTS="-DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache"; else echo "ccache is not available - building without it"; CCACHE_OPTS=""; fi
    - end_section install_linux_packages

    - start_section install_collocatordb "Building and installing collocatordb"
    - git clone "https://korap.ids-mannheim.de/gerrit/ids-kl/collocatordb"
    - cd collocatordb
    - mkdir -p build
    - cd build
    - cmake $CCACHE_OPTS ..
    - make
    - command -v ccache > /dev/null && ccache --show-stats || true
    - make install # && ctest --extra-verbose
    - ldconfig
    - end_section install_collocatordb
    - cd ../..

  script:
    - start_section build_dereko2vec "Building and testing dereko2vec"
    - pwd
    - mkdir build
    - cd build
    - cmake -DSTATIC_DEREKO2VEC=ON $CCACHE_OPTS ..
    - make || (cmake $CCACHE_OPTS .. && make)
    - command -v ccache > /dev/null && ccache --show-stats || true
    - ctest --extra-verbose
    - end_section build_dereko2vec

  artifacts:
    paths:
      - build/dereko2vec