# This file uses the freedesktop ci-templates to build Weston and run our
# tests in CI.
# 
# ci-templates uses a multi-stage build process. First, the base container
# image is built which contains the core distribution, the toolchain, and
# all our build dependencies. This container is aggressively cached; if a
# container image matching $FDO_DISTRIBUTION_TAG is found in either the
# upstream repo (wayland/weston) or the user's downstream repo, it is
# reused for the build. This gives us predictability of build and far
# quicker runtimes, however it means that any changes to the base container
# must also change $FDO_DISTRIBUTION_TAG. When changing this, please use
# the current date as well as a unique build identifier.
#
# After the container is either rebuilt (tag mismatch) or reused (tag
# previously used), the build stage executes within this container.
#
# The final stage is used to expose documentation and coverage information,
# including publishing documentation to the public site when built on the
# main branch.
#
# Apart from the 'variables', 'include', and 'stages' top-level anchors,
# everything not beginning with a dot ('.') is the name of a job which will
# be executed as part of CI, unless the rules specify that it should not be
# run.
#
# Variables prefixed with CI_ are generally provided by GitLab itself;
# variables prefixed with FDO_ and templates prefixed by .fdo are provided
# by the ci-templates.
#
# For more information on GitLab CI, including the YAML syntax, see:
#   https://docs.gitlab.com/ee/ci/yaml/README.html
#
# Note that freedesktop.org uses the 'Community Edition' of GitLab, so features
# marked as 'premium' or 'ultimate' are not available to us.
#
# For more information on ci-templates, see:
#   - documentation at https://freedesktop.pages.freedesktop.org/ci-templates/
#   - repo at https://gitlab.freedesktop.org/freedesktop/ci-templates/

# Here we use a fixed ref in order to isolate ourselves from ci-templates
# API changes. If you need new features from ci-templates you must bump
# this to the current SHA you require from the ci-templates repo, however
# be aware that you may need to account for API changes when doing so.
.templates_sha: &template_sha 567700e483aabed992d0a4fea84994a0472deff6 # see https://docs.gitlab.com/ee/ci/yaml/#includefile

include:
  - project: 'freedesktop/ci-templates'
    ref: *template_sha
    file:
      - '/templates/debian.yml'
      - '/templates/ci-fairy.yml'

variables:
  FDO_UPSTREAM_REPO: wayland/wayland
  FDO_REPO_SUFFIX: "$BUILD_OS/$BUILD_ARCH"
  # bump this tag every time you change something which requires rebuilding the
  # base image
  FDO_DISTRIBUTION_TAG: "2021-08-03.0"


# Define the build stages. These are used for UI grouping as well as
# dependencies.
stages:
  - "Merge request checks"
  - "Base container"
  - "Build and test"
  - "Other build configurations"

.ci-rules:
  rules:
    - when: on_success

# Base variables used for anything using a Debian environment
.os-debian:
  variables:
    BUILD_OS: debian
    FDO_DISTRIBUTION_VERSION: buster
    FDO_DISTRIBUTION_PACKAGES: 'build-essential pkg-config libexpat1-dev libffi-dev libxml2-dev doxygen graphviz xmlto xsltproc docbook-xsl python3-pip python3-setuptools ninja-build'
    FDO_DISTRIBUTION_EXEC: 'pip3 install meson==0.52.1'

.debian-x86_64:
  extends:
    - .os-debian
  variables:
    BUILD_ARCH: "x86-64"

.debian-aarch64:
  extends:
    - .os-debian
  variables:
    BUILD_ARCH: "aarch64"

.debian-armv7:
  extends:
    - .os-debian
  variables:
    BUILD_ARCH: "armv7"


# Does not inherit .ci-rules as we only want it to run in MR context.
check-commit:
  extends:
    - .fdo.ci-fairy
  stage: "Merge request checks"
  rules:
    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
      when: always
    - when: never
  script:
    - ci-fairy check-commits --signed-off-by --junit-xml=results.xml
  variables:
    GIT_DEPTH: 100
  artifacts:
    reports:
      junit: results.xml


# Build our base container image, which contains the core distribution, the
# toolchain, and all our build dependencies. This will be reused in the build
# stage.
x86_64-debian-container_prep:
  extends:
    - .ci-rules
    - .debian-x86_64
    - .fdo.container-build@debian
  stage: "Base container"
  variables:
    GIT_STRATEGY: none

aarch64-debian-container_prep:
  extends:
    - .ci-rules
    - .debian-aarch64
    - .fdo.container-build@debian
  tags:
    - aarch64
  stage: "Base container"
  variables:
    GIT_STRATEGY: none

armv7-debian-container_prep:
  extends:
    - .ci-rules
    - .debian-armv7
    - .fdo.container-build@debian
  tags:
    - aarch64
  stage: "Base container"
  variables:
    GIT_STRATEGY: none
    FDO_BASE_IMAGE: "arm32v7/debian:$FDO_DISTRIBUTION_VERSION"


# Core build environment.
.build-env:
  variables:
    MESON_BUILD_TYPE: "-Dbuildtype=debug -Doptimization=0 -Db_sanitize=address,undefined"
  before_script:
    - export BUILD_ID="wayland-$CI_JOB_NAME"
    - export PREFIX="${CI_PROJECT_DIR}/prefix-${BUILD_ID}"
    - export BUILDDIR="${CI_PROJECT_DIR}/build-${BUILD_ID}"
    - mkdir "$BUILDDIR" "$PREFIX"


# Build variants to be stacked on as required.
.build-release:
  stage: "Other build configurations"
  variables:
    MESON_BUILD_TYPE: "-Dbuildtype=release"


# OS/architecture-specific variants
.build-env-debian-x86_64:
  extends:
    - .fdo.suffixed-image@debian
    - .debian-x86_64
    - .build-env
  needs:
    - job: x86_64-debian-container_prep
      artifacts: false

.build-env-debian-aarch64:
  extends:
    - .fdo.suffixed-image@debian
    - .debian-aarch64
    - .build-env
  variables:
    # At least with the versions we have, the LSan runtime makes fork unusably
    # slow on AArch64, which is bad news since the test suite decides to fork
    # for every single subtest. For now, in order to get AArch64 builds and
    # tests into CI, just assume that we're not going to leak any more on
    # AArch64 than we would on ARMv7 or x86-64.
    ASAN_OPTIONS: "detect_leaks=0"
  tags:
    - aarch64
  needs:
    - job: aarch64-debian-container_prep
      artifacts: false

.build-env-debian-armv7:
  extends:
    - .fdo.suffixed-image@debian
    - .debian-armv7
    - .build-env
  tags:
    - aarch64
  needs:
    - job: armv7-debian-container_prep
      artifacts: false


# Full build and test.
.do-build:
  extends:
    - .ci-rules
  stage: "Build and test"
  script:
    - cd "$BUILDDIR"
    - meson --prefix="$PREFIX" -Dicon_directory=/usr/share/X11/icons -Dwerror=true ${MESON_BUILD_TYPE} ..
    - ninja -k0 -j${FDO_CI_CONCURRENT:-4}
    - meson test --num-processes ${FDO_CI_CONCURRENT:-4}
    - ninja clean
  artifacts:
    name: wayland-$CI_JOB_NAME
    when: always
    paths:
      - build-*/meson-logs
      - prefix-*


# Full build and test.
x86_64-debian-build:
  extends:
    - .build-env-debian-x86_64
    - .do-build

x86_64-release-debian-build:
  extends:
    - .build-env-debian-x86_64
    - .do-build
    - .build-release

aarch64-debian-build:
  extends:
    - .build-env-debian-aarch64
    - .do-build

aarch64-release-debian-build:
  extends:
    - .build-env-debian-aarch64
    - .do-build
    - .build-release

armv7-debian-build:
  extends:
    - .build-env-debian-armv7
    - .do-build

armv7-release-debian-build:
  extends:
    - .build-env-debian-armv7
    - .do-build
    - .build-release