version: 2
jobs:
  build:
    docker:
      - image: circleci/python

    steps:
      - checkout
      - run:
          name: "Pull Submodules"
          command: |
            git submodule update --init --recursive
      - run:
          name: Check current directory
          command: pwd
      - run:
          name: Check current directory content
          command: ls
      - run:
          name: Installing GCC
          command: 'sudo apt-get update && sudo apt-get install -y gcc g++'
      - run:
          name: Install CMAKE
          command: 'sudo apt-get update && sudo apt-get install -y cmake ninja-build'
      - run:
          name: Install Protobuf
          command: 'sudo apt-get update && sudo apt-get install -y protobuf-compiler'
      - run:
          name: Check gcc version
          command: gcc --version

      - restore_cache:
          key: LLVM-PROJECT-{{ arch }}
      - run:
          name: Install MLIR
          command: |
            if [ ! -f llvm-project/build/bin/mlir-opt ]; then
              git clone https://github.com/llvm/llvm-project.git
              mkdir llvm-project/build
              cd llvm-project/build
              cmake -G Ninja ../llvm \
                 -DLLVM_ENABLE_PROJECTS=mlir \
                 -DLLVM_BUILD_EXAMPLES=ON \
                 -DLLVM_TARGETS_TO_BUILD="host" \
                 -DCMAKE_BUILD_TYPE=Release \
                 -DLLVM_ENABLE_ASSERTIONS=ON \
                 -DLLVM_ENABLE_RTTI=ON
              # TODO(tjingrant): why is RTTI necessary?
              cmake --build . --target check-mlir -- -j 4
            fi
      - save_cache:
          key: LLVM-PROJECT-{{ arch }}
          paths:
            - llvm-project
      - run:
          name: Install ONNF
          command: |
            mkdir build && cd build
            LLVM_SRC=$(pwd)/../llvm-project/llvm LLVM_BUILD=$(pwd)/../llvm-project/build cmake ..
            make all
            LIT_OPTS=-v make check-mlir-lit
      - run:
          name: Print the Current Time
          command: date