# =============================================================================
# An Ubuntu docker file for llvm-tutor that builds LLVM from sources. Clones
# and builds llvm-tutor, runs all tests. It uses the precompiled LLVM packages
# from Ubuntu.
#
# USAGE:
# ```bash
# wget https://raw.githubusercontent.com/banach-space/llvm-tutor/main/Dockerfile_ubuntu
# docker build -t=llvm-tutor:llvm-16 .
# docker run --rm -it --hostname=llvm-tutor llvm-tutor:llvm-16 /bin/bash
# ```
# =============================================================================

FROM debian:buster

# 1. INSTALL DEPENDENCIES
RUN apt-get update && apt-get install -y \
    git \
    cmake \
    ninja-build \
    build-essential \
    python3-minimal python3-pip\
    && rm -rf /var/lib/apt/lists/*

# 2. INSTALL LIT
RUN pip3 install lit

# 2. BUILD LLVM + Clang from sources
# Note that LIT tests depend on 'not' and 'FileCheck', LLVM utilities. For this
# reason, we need to add `-DLLVM_INSTALL_UTILS=ON` CMake flag when building
# LLVM.
ENV LLVM_DIR /opt/llvm
RUN git clone --branch release/16.x --depth 1 https://github.com/llvm/llvm-project \
    && mkdir -p $LLVM_DIR \
    && mkdir -p llvm-project/build \
    && cd llvm-project/build \
    && cmake -G Ninja \
        -DLLVM_ENABLE_PROJECTS=clang \
        -DLLVM_TARGETS_TO_BUILD=host \
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_INSTALL_PREFIX=$LLVM_DIR \
        -DLLVM_INSTALL_UTILS=ON \
        ../llvm \
    && cmake --build . --target install \
    && rm -r /llvm-project

# 5. BUILD AND RUN LLVM-TUTOR
ENV TUTOR_DIR /llvm-tutor
RUN git clone https://github.com/banach-space/llvm-tutor $TUTOR_DIR \
    && mkdir -p $TUTOR_DIR/build \
    && cd $TUTOR_DIR/build \
    && cmake -DLT_LLVM_INSTALL_DIR=$LLVM_DIR ../ \
    && make -j $(nproc --all) \
    && lit test/