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|
# This workflow is for pre-commit testing of the LLVM-libc project.
name: LLVM-libc Pre-commit Overlay Tests
permissions:
contents: read
on:
pull_request:
branches: [ "main" ]
paths:
- 'libc/**'
- '.github/workflows/libc-overlay-tests.yml'
jobs:
build:
runs-on: ${{ matrix.os }}
strategy:
# Set fail-fast to false to ensure that feedback is delivered for all matrix combinations.
fail-fast: false
matrix:
os: [ubuntu-24.04, ubuntu-24.04-arm, windows-2022, windows-2025, macos-14]
include:
# TODO: add linux gcc when it is fixed
- os: ubuntu-24.04
compiler:
c_compiler: clang
cpp_compiler: clang++
- os: ubuntu-24.04-arm
compiler:
c_compiler: clang
cpp_compiler: clang++
- os: windows-2022
compiler:
c_compiler: clang-cl
cpp_compiler: clang-cl
- os: windows-2025
compiler:
c_compiler: clang-cl
cpp_compiler: clang-cl
- os: macos-14
compiler:
c_compiler: clang
cpp_compiler: clang++
steps:
- uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
# Libc's build is relatively small comparing with other components of LLVM.
# A fresh linux overlay takes about 180MiB of uncompressed disk space, which can
# be compressed into ~40MiB. MacOS and Windows overlay builds are less than 10MiB
# after compression. Limiting the cache size to 1G should be enough.
# Prefer sccache as it is modern and it has a guarantee to work with MSVC.
# Do not use direct GHAC access even though it is supported by sccache. GHAC rejects
# frequent small object writes.
- name: Setup ccache
uses: hendrikmuhs/ccache-action@bfa03e1de4d7f7c3e80ad9109feedd05c4f5a716 # v1.2.19
with:
max-size: 1G
key: libc_overlay_build_${{ matrix.os }}_${{ matrix.compiler.c_compiler }}
variant: sccache
# MPFR is required by some of the mathlib tests.
- name: Prepare dependencies (Ubuntu)
if: runner.os == 'Linux'
run: |
sudo apt-get update
sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build
# Chocolatey is shipped with Windows runners. Windows Server 2025 recommends WinGet.
# Consider migrating to WinGet when Windows Server 2025 is available.
- name: Prepare dependencies (Windows)
if: runner.os == 'Windows'
run: |
choco install ninja
- name: Prepare dependencies (macOS)
if: runner.os == 'macOS'
run: |
brew install ninja
- name: Set reusable strings
id: strings
shell: bash
run: |
echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
# Use MinSizeRel to reduce the size of the build.
# Notice that CMP0141=NEW and MSVC_DEBUG_INFORMATION_FORMAT=Embedded are required
# by the sccache tool.
- name: Configure CMake
run: >
cmake -B ${{ steps.strings.outputs.build-output-dir }}
-DCMAKE_CXX_COMPILER=${{ matrix.compiler.cpp_compiler }}
-DCMAKE_C_COMPILER=${{ matrix.compiler.c_compiler }}
-DCMAKE_BUILD_TYPE=Debug
-DCMAKE_C_COMPILER_LAUNCHER=sccache
-DCMAKE_CXX_COMPILER_LAUNCHER=sccache
-DCMAKE_POLICY_DEFAULT_CMP0141=NEW
-DCMAKE_MSVC_DEBUG_INFORMATION_FORMAT=Embedded
-DLLVM_ENABLE_RUNTIMES=libc
-G Ninja
-S ${{ github.workspace }}/runtimes
- name: Build
run: >
cmake
--build ${{ steps.strings.outputs.build-output-dir }}
--parallel
--target libc
- name: Test
run: >
cmake
--build ${{ steps.strings.outputs.build-output-dir }}
--parallel
--target check-libc
|
