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b9a2658a3e
This patch implements the forwarding to frozen C++03 headers as discussed in https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc. In the RFC, we initially proposed selecting the right headers from the Clang driver, however consensus seemed to steer towards handling this in the library itself. This patch implements that direction. At a high level, the changes basically amount to making each public header look like this: ``` // inside <vector> #ifdef _LIBCPP_CXX03_LANG # include <__cxx03/vector> #else // normal <vector> content #endif ``` In most cases, public headers are simple umbrella headers so there isn't much code in the #else branch. In other cases, the #else branch contains the actual implementation of the header.
278 lines
9.5 KiB
YAML
278 lines
9.5 KiB
YAML
# This file defines pre-commit CI for libc++, libc++abi, and libunwind (on Github).
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#
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# We split the configurations in multiple stages with the intent of saving compute time
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# when a job fails early in the pipeline. This is why the jobs are marked as `continue-on-error: false`.
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# We try to run the CI configurations with the most signal in the first stage.
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#
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# Stages 1 & 2 are meant to be "smoke tests", and are meant to catch most build/test failures quickly and without using
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# too many resources.
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# Stage 3 is "everything else", and is meant to catch breakages on more niche or unique configurations.
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#
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# Therefore, we "fail-fast" for any failures during stages 1 & 2, meaning any job failing cancels all other running jobs,
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# under the assumption that if the "smoke tests" fail, then the other configurations will likely fail in the same way.
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# However, stage 3 does not fail fast, as it's more likely that any one job failing is a flake or a configuration-specific
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#
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name: Build and Test libc++
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on:
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pull_request:
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paths:
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- 'libcxx/**'
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- 'libcxxabi/**'
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- 'libunwind/**'
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- 'runtimes/**'
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- 'cmake/**'
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- '.github/workflows/libcxx-build-and-test.yaml'
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schedule:
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# Run nightly at 08:00 UTC (aka 00:00 Pacific, aka 03:00 Eastern)
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- cron: '0 8 * * *'
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permissions:
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contents: read # Default everything to read-only
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concurrency:
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group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
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cancel-in-progress: true
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jobs:
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stage1:
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if: github.repository_owner == 'llvm'
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runs-on: libcxx-self-hosted-linux
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container: ghcr.io/llvm/libcxx-linux-builder:d8a0709b1090350a7fe3604d8ab78c7d62f10698
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continue-on-error: false
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strategy:
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fail-fast: false
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matrix:
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config: [
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'frozen-cxx03-headers',
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'generic-cxx03',
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'generic-cxx26',
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'generic-modules'
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]
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cc: [ 'clang-19' ]
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cxx: [ 'clang++-19' ]
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include:
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- config: 'generic-gcc'
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cc: 'gcc-14'
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cxx: 'g++-14'
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steps:
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- uses: actions/checkout@v4
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- name: ${{ matrix.config }}.${{ matrix.cxx }}
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run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
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env:
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CC: ${{ matrix.cc }}
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CXX: ${{ matrix.cxx }}
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- uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
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if: always()
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with:
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name: ${{ matrix.config }}-${{ matrix.cxx }}-results
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path: |
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**/test-results.xml
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**/*.abilist
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**/CMakeConfigureLog.yaml
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**/CMakeError.log
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**/CMakeOutput.log
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**/crash_diagnostics/*
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stage2:
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if: github.repository_owner == 'llvm'
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runs-on: libcxx-self-hosted-linux
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container: ghcr.io/llvm/libcxx-linux-builder:d8a0709b1090350a7fe3604d8ab78c7d62f10698
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needs: [ stage1 ]
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continue-on-error: false
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strategy:
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fail-fast: false
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matrix:
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config: [
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'generic-cxx11',
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'generic-cxx14',
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'generic-cxx17',
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'generic-cxx20',
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'generic-cxx23'
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]
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cc: [ 'clang-19' ]
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cxx: [ 'clang++-19' ]
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include:
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- config: 'generic-gcc-cxx11'
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cc: 'gcc-14'
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cxx: 'g++-14'
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- config: 'generic-cxx23'
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cc: 'clang-17'
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cxx: 'clang++-17'
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- config: 'generic-cxx26'
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cc: 'clang-18'
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cxx: 'clang++-18'
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steps:
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- uses: actions/checkout@v4
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- name: ${{ matrix.config }}
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run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
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env:
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CC: ${{ matrix.cc }}
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CXX: ${{ matrix.cxx }}
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- uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
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if: always() # Upload artifacts even if the build or test suite fails
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with:
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name: ${{ matrix.config }}-${{ matrix.cxx }}-results
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path: |
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**/test-results.xml
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**/*.abilist
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**/CMakeConfigureLog.yaml
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**/CMakeError.log
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**/CMakeOutput.log
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**/crash_diagnostics/*
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stage3:
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if: github.repository_owner == 'llvm'
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needs: [ stage1, stage2 ]
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continue-on-error: false
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strategy:
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fail-fast: false
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max-parallel: 8
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matrix:
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config: [
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'generic-abi-unstable',
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'generic-hardening-mode-debug',
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'generic-hardening-mode-extensive',
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'generic-hardening-mode-fast',
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'generic-hardening-mode-fast-with-abi-breaks',
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'generic-merged',
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'generic-modules-lsv',
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'generic-no-exceptions',
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'generic-no-experimental',
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'generic-no-filesystem',
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'generic-no-localization',
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'generic-no-terminal',
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'generic-no-random_device',
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'generic-no-threads',
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'generic-no-tzdb',
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'generic-no-unicode',
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'generic-no-wide-characters',
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'generic-no-rtti',
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'generic-optimized-speed',
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'generic-static',
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'bootstrapping-build'
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]
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machine: [ 'libcxx-self-hosted-linux' ]
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include:
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- config: 'generic-cxx26'
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machine: libcxx-self-hosted-linux
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- config: 'generic-asan'
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machine: libcxx-self-hosted-linux
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- config: 'generic-tsan'
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machine: libcxx-self-hosted-linux
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- config: 'generic-ubsan'
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machine: libcxx-self-hosted-linux
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# Use a larger machine for MSAN to avoid timeout and memory allocation issues.
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- config: 'generic-msan'
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machine: libcxx-self-hosted-linux
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runs-on: ${{ matrix.machine }}
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container: ghcr.io/llvm/libcxx-linux-builder:d8a0709b1090350a7fe3604d8ab78c7d62f10698
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steps:
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- uses: actions/checkout@v4
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- name: ${{ matrix.config }}
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run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
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env:
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CC: clang-19
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CXX: clang++-19
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- uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
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if: always()
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with:
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name: ${{ matrix.config }}-results
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path: |
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**/test-results.xml
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**/*.abilist
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**/CMakeConfigureLog.yaml
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**/CMakeError.log
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**/CMakeOutput.log
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**/crash_diagnostics/*
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macos:
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needs: [ stage1 ]
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strategy:
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fail-fast: false
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matrix:
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include:
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- config: generic-cxx03
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os: macos-15
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- config: generic-cxx23
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os: macos-15
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- config: generic-modules
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os: macos-15
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- config: apple-configuration
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os: macos-15
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- config: apple-system
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os: macos-13
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- config: apple-system-hardened
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os: macos-13
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runs-on: ${{ matrix.os }}
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steps:
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- uses: actions/checkout@v4
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- uses: maxim-lobanov/setup-xcode@v1
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with:
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xcode-version: 'latest'
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- uses: seanmiddleditch/gha-setup-ninja@master
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- name: Build and test
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run: |
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python3 -m venv .venv
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source .venv/bin/activate
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python -m pip install psutil
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bash libcxx/utils/ci/run-buildbot ${{ matrix.config }}
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- uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
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if: always() # Upload artifacts even if the build or test suite fails
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with:
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name: macos-${{ matrix.config }}-results
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path: |
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**/test-results.xml
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**/*.abilist
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**/CMakeConfigureLog.yaml
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**/CMakeError.log
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**/CMakeOutput.log
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**/crash_diagnostics/*
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windows:
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runs-on: windows-2022
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needs: [ stage1 ]
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strategy:
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fail-fast: false
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matrix:
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include:
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- { config: clang-cl-dll, mingw: false }
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- { config: clang-cl-static, mingw: false }
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- { config: clang-cl-no-vcruntime, mingw: false }
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- { config: clang-cl-debug, mingw: false }
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- { config: clang-cl-static-crt, mingw: false }
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- { config: mingw-dll, mingw: true }
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- { config: mingw-static, mingw: true }
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- { config: mingw-dll-i686, mingw: true }
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- { config: mingw-incomplete-sysroot, mingw: true }
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steps:
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- uses: actions/checkout@v4
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- name: Install dependencies
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run: |
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choco install -y ninja
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pip install psutil
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- name: Install a current LLVM
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if: ${{ matrix.mingw != true }}
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run: |
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choco install -y llvm --version=18.1.6 --allow-downgrade
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- name: Install llvm-mingw
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if: ${{ matrix.mingw == true }}
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run: |
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curl -LO https://github.com/mstorsjo/llvm-mingw/releases/download/20240606/llvm-mingw-20240606-ucrt-x86_64.zip
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powershell Expand-Archive llvm-mingw*.zip -DestinationPath .
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del llvm-mingw*.zip
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mv llvm-mingw* c:\llvm-mingw
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echo "c:\llvm-mingw\bin" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf8 -Append
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- name: Simulate a from-scratch build of llvm-mingw
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if: ${{ matrix.config == 'mingw-incomplete-sysroot' }}
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run: |
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rm -r c:\llvm-mingw\include\c++
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rm -r c:\llvm-mingw\*-w64-mingw32\lib\libc++*
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rm -r c:\llvm-mingw\*-w64-mingw32\lib\libunwind*
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- name: Add Git Bash to the path
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run: |
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echo "c:\Program Files\Git\usr\bin" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf8 -Append
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- name: Set up the MSVC dev environment
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if: ${{ matrix.mingw != true }}
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uses: ilammy/msvc-dev-cmd@v1
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- name: Build and test
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run: |
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bash libcxx/utils/ci/run-buildbot ${{ matrix.config }}
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