xref: /llvm-project/.github/workflows/libc-fullbuild-tests.yml (revision acc13dbe4dcbfeafec24211148683a8b7e9c4cf0) 
1# This workflow is for pre-commit testing of the LLVM-libc project.
2name: LLVM-libc Pre-commit Fullbuild Tests
3permissions:
4  contents: read
5on:
6  pull_request:
7    branches: [ "main" ]
8    paths:
9      - 'libc/**'
10      - '.github/workflows/libc-fullbuild-tests.yml'
11
12jobs:
13  build:
14    runs-on: ${{ matrix.os }}
15    strategy:
16      fail-fast: false
17      matrix:
18        include:
19          - os: ubuntu-24.04
20            ccache-variant: sccache
21            c_compiler: clang
22            cpp_compiler: clang++
23          # TODO: remove ccache logic when https://github.com/hendrikmuhs/ccache-action/issues/279 is resolved.
24          - os: ubuntu-24.04-arm
25            ccache-variant: ccache
26            c_compiler: clang
27            cpp_compiler: clang++
28          # TODO: add back gcc build when it is fixed
29          # - c_compiler: gcc
30          #   cpp_compiler: g++
31    steps:
32    - uses: actions/checkout@v4
33
34    # Libc's build is relatively small comparing with other components of LLVM.
35    # A fresh fullbuild takes about 190MiB of uncompressed disk space, which can
36    # be compressed into ~40MiB. Limiting the cache size to 1G should be enough.
37    # Prefer sccache as it is more modern.
38    # Do not use direct GHAC access even though it is supported by sccache. GHAC rejects
39    # frequent small object writes.
40    - name: Setup ccache
41      uses: hendrikmuhs/ccache-action@v1.2
42      with:
43        max-size: 1G
44        key: libc_fullbuild_${{ matrix.c_compiler }}
45        variant: ${{ matrix.ccache-variant }}
46
47    # Notice:
48    # - MPFR is required by some of the mathlib tests.
49    # - Debian has a multilib setup, so we need to symlink the asm directory.
50    #   For more information, see https://wiki.debian.org/Multiarch/LibraryPathOverview
51    - name: Prepare dependencies (Ubuntu)
52      run: |
53        sudo apt-get update
54        sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build linux-libc-dev
55        sudo ln -sf /usr/include/$(uname -p)-linux-gnu/asm /usr/include/asm
56
57    - name: Set reusable strings
58      id: strings
59      shell: bash
60      run: |
61        echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
62        echo "build-install-dir=${{ github.workspace }}/install" >> "$GITHUB_OUTPUT"
63
64    # Configure libc fullbuild with scudo.
65    # Use MinSizeRel to reduce the size of the build.
66    - name: Configure CMake
67      run: >
68        cmake -B ${{ steps.strings.outputs.build-output-dir }}
69        -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
70        -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
71        -DCMAKE_BUILD_TYPE=MinSizeRel
72        -DCMAKE_C_COMPILER_LAUNCHER=${{ matrix.ccache-variant }}
73        -DCMAKE_CXX_COMPILER_LAUNCHER=${{ matrix.ccache-variant }}
74        -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.build-install-dir }}
75        -DLLVM_ENABLE_RUNTIMES="libc;compiler-rt"
76        -DLLVM_LIBC_FULL_BUILD=ON
77        -DLLVM_LIBC_INCLUDE_SCUDO=ON
78        -DCOMPILER_RT_BUILD_SCUDO_STANDALONE_WITH_LLVM_LIBC=ON
79        -DCOMPILER_RT_BUILD_GWP_ASAN=OFF
80        -DCOMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED=OFF
81        -G Ninja
82        -S ${{ github.workspace }}/runtimes
83
84    - name: Build
85      run: >
86        cmake
87        --build ${{ steps.strings.outputs.build-output-dir }}
88        --parallel
89        --target install
90
91    - name: Test
92      run: >
93        cmake
94        --build ${{ steps.strings.outputs.build-output-dir }}
95        --parallel
96        --target check-libc
97