build-config/Dockerfile-ubuntu2004

FROM ubuntu:20.04 AS build1

MAINTAINER Ray Burgemeestre

ARG DEBIAN_FRONTEND=noninteractive

RUN apt-get update && \
    apt-get -y install g++ git sudo wget gnupg2 && \
    apt-get -y install libssl-dev build-essential && \
    apt-get -y install vim gdb strace patch && \
    \
    echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main >> /etc/apt/sources.list && \
    echo deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main >> /etc/apt/sources.list && \
    wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add - ; \
    apt update -y && \
    apt-get install -y clang-12 lldb-12 lld-12 && \
    apt-get install -y libc++-12-dev libc++-12-dev clang-format-12 && \
    \
    rm -rf /var/lib/apt/lists/*

# Install newer CMake to avoid some warnings the "FindBoost" script throws on
#  more recent versions of boost that the system CMake doesn't now about.
# I chose a bloody new boost, so I need to use the latest RC1 (at the time of writing)
RUN wget https://github.com/Kitware/CMake/releases/download/v3.21.3/cmake-3.21.3.tar.gz && \
    tar -zxf cmake-3.21.3.tar.gz && \
    cd cmake-3.21.3 && \
    ./bootstrap && \
    make -j $(nproc) && \
    make install && \
    cd .. && \
    rm -rf cmake-3.21.3 && \
    rm -rf cmake-3.21.3.tar.gz

# Install emscripten deps
RUN sudo apt-get update && \
    sudo apt-get install -y libsdl2-dev && \
    (git clone https://github.com/emscripten-core/emsdk.git || true) && \
    cd emsdk && \
    ./emsdk install latest && \
    ./emsdk activate latest && \
    sudo cp -prv ./emsdk_env.sh /etc/profile.d/

# Warmup emscripten (this will pre-fetch SDL2, and cache it)
RUN /emsdk/upstream/emscripten/em++ -s WASM=1 -s USE_SDL=2 -s USE_SDL_TTF=2 -O3 /dev/null || true

# Fix some weird linker issue CAF build runs into. (fails to link -lc++abi)
RUN cp -prv /usr/lib/llvm-12/lib/libc++abi.so.1.0 /usr/lib/llvm-12/lib/libc++abi.so

RUN cp -prv /usr/lib/llvm-12/lib/libunwind.so.1.0 /usr/lib/llvm-12/lib/libunwind.so

COPY switch-to-latest-clang /usr/local/bin/switch-to-latest-clang
COPY switch-to-latest-gcc /usr/local/bin/switch-to-latest-gcc

RUN chmod +x /usr/local/bin/switch-to-latest-clang
RUN chmod +x /usr/local/bin/switch-to-latest-gcc

RUN apt clean

FROM scratch

COPY --from=build1 / /

CMD "/bin/bash"