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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
# This Dockerfile describes the base image used to run the various libc++
# build bots. By default, the image runs the Buildkite Agent, however one
# can also just start the image with a shell to debug CI failures.
# To start a Buildkite Agent, run it as:
# $ docker run --env-file <secrets> -it $(docker build -q libcxx/utils/ci)
# The environment variables in `<secrets>` should be the ones necessary
# to run a BuildKite agent.
# If you're only looking to run the Docker image locally for debugging a
# build bot, see the `run-buildbot-container` script located in this directory.
# A pre-built version of this image is maintained on DockerHub as ldionne/libcxx-builder.
# To update the image, rebuild it and push it to ldionne/libcxx-builder (which
# will obviously only work if you have permission to do so).
# $ docker build -t ldionne/libcxx-builder libcxx/utils/ci
# $ docker push ldionne/libcxx-builder
FROM ubuntu:jammy
# Make sure apt-get doesn't try to prompt for stuff like our time zone, etc.
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y bash curl
# Install various tools used by the build or the test suite
RUN apt-get update && apt-get install -y ninja-build python3 python3-sphinx python3-distutils python3-psutil git gdb
# Install dependencies required to run the LLDB data formatter tests
RUN apt-get update && apt-get install -y python3 python3-dev libpython3-dev uuid-dev libncurses5-dev swig3.0 libxml2-dev libedit-dev
# Locales for gdb and localization tests
RUN apt-get update && apt-get install -y language-pack-en language-pack-fr \
language-pack-ja language-pack-ru \
# These two are not enabled by default so generate them
RUN printf "fr_CA ISO-8859-1\ncs_CZ ISO-8859-2" >> /etc/locale.gen
RUN mkdir /usr/local/share/i1en/
RUN printf "fr_CA ISO-8859-1\ncs_CZ ISO-8859-2" >> /usr/local/share/i1en/SUPPORTED
RUN locale-gen
# Install Clang <latest>, <latest-1> and ToT, which are the ones we support.
# We also install <latest-2> because we need to support the "latest-1" of the
# current LLVM release branch, which is effectively the <latest-2> of the
# tip-of-trunk LLVM. For example, after branching LLVM 14 but before branching
# LLVM 15, we still need to have Clang 12 in this Docker image because the LLVM
# 14 release branch CI uses it. The tip-of-trunk CI will never use Clang 12,
# though.
RUN apt-get update && apt-get install -y lsb-release wget software-properties-common
RUN wget -O /tmp/
RUN bash /tmp/ $(($LLVM_HEAD_VERSION - 3)) # for CI transitions
RUN bash /tmp/ $(($LLVM_HEAD_VERSION - 2)) # previous release
RUN bash /tmp/ $(($LLVM_HEAD_VERSION - 1)) # latest release
RUN bash /tmp/ $LLVM_HEAD_VERSION # current ToT
# Make the latest version of Clang the "default" compiler on the system
# TODO: After branching for LLVM 16, all jobs will be using an
# explicitly-versioned version of Clang instead, so we can get rid of
# these symlinks.
RUN ln -fs /usr/bin/clang++-14 /usr/bin/c++ && [ -e $(readlink /usr/bin/c++) ]
RUN ln -fs /usr/bin/clang-14 /usr/bin/cc && [ -e $(readlink /usr/bin/cc) ]
# Install clang-format; always use the lastest stable branch.
# TODO LLVM 16 remove hard-coded version 14 and the symlinks
RUN apt-get update && apt-get install -y clang-format-$(($LLVM_HEAD_VERSION - 2)) clang-format-$(($LLVM_HEAD_VERSION - 1))
RUN ln -s /usr/bin/clang-format-14 /usr/bin/clang-format && [ -e $(readlink /usr/bin/clang-format) ]
RUN ln -s /usr/bin/git-clang-format-14 /usr/bin/git-clang-format && [ -e $(readlink /usr/bin/git-clang-format) ]
# Install clang-tidy
# TODO LLVM 16 remove hard-coded version 14 and the symlink
RUN apt-get update && apt-get install -y clang-tidy-$(($LLVM_HEAD_VERSION - 1)) clang-tidy-$LLVM_HEAD_VERSION clang-tidy-14
RUN ln -s /usr/bin/clang-tidy-14 /usr/bin/clang-tidy && [ -e $(readlink /usr/bin/clang-tidy) ]
# Install llvm-dev and libclang-dev to compile custom clang-tidy checks
RUN apt-get update && apt-get install -y llvm-$(($LLVM_HEAD_VERSION - 1))-dev llvm-$(($LLVM_HEAD_VERSION - 2))-dev \
libclang-$(($LLVM_HEAD_VERSION - 1))-dev libclang-$(($LLVM_HEAD_VERSION - 2))-dev
# TODO LLVM16 Don't install llvm-16-dev explicitly
RUN apt-get update && apt-get install -y llvm-16-dev libclang-16-dev
# Install the most recent GCC, like clang install the previous version as a transition.
RUN apt-get update && apt install -y gcc-$((GCC_LATEST_VERSION - 1)) g++-$((GCC_LATEST_VERSION - 1))
RUN apt-get update && apt install -y gcc-$GCC_LATEST_VERSION g++-$GCC_LATEST_VERSION
# Install a recent CMake
RUN wget -O /tmp/
RUN bash /tmp/ --prefix=/usr --exclude-subdir --skip-license
RUN rm /tmp/
# Change the user to a non-root user, since some of the libc++ tests
# (e.g. filesystem) require running as non-root. Also setup passwordless sudo.
RUN apt-get update && apt-get install -y sudo
RUN echo "ALL ALL = (ALL) NOPASSWD: ALL" >> /etc/sudoers
RUN useradd --create-home libcxx-builder
USER libcxx-builder
WORKDIR /home/libcxx-builder
# Install the Buildkite agent and dependencies. This must be done as non-root
# for the Buildkite agent to be installed in a path where we can find it.
RUN bash -c "$(curl -sL"
ENV PATH="${PATH}:/home/libcxx-builder/.buildkite-agent/bin"
RUN echo "tags=\"queue=libcxx-builders,arch=$(uname -m),os=linux\"" >> "/home/libcxx-builder/.buildkite-agent/buildkite-agent.cfg"
# By default, start the Buildkite agent (this requires a token).
CMD buildkite-agent start