sanitize-build-libcxx.yml

# Copyright (c) 2010-2025, Lawrence Livermore National Security, LLC. Produced
# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
# LICENSE and NOTICE for details. LLNL-CODE-806117.
#
# This file is part of the MFEM library. For more information and source code
# availability visit https://mfem.org.
#
# MFEM is free software; you can redistribute it and/or modify it under the
# terms of the BSD-3 license. We welcome feedback and contributions, see file
# CONTRIBUTING.md for details.
---
name: build-libcxx
on:
  workflow_call:
jobs:
  build-llvm-libcxx:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        sanitizer: [asan, msan, ubsan]
        include:
          - sanitizer: asan
            llvm_use_sanitizer: "Address"
          - sanitizer: msan
            llvm_use_sanitizer: "MemoryWithOrigins"
          - sanitizer: ubsan
            llvm_use_sanitizer: "Undefined"
    name: ${{matrix.sanitizer}}
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/sanitize/config
        with:
          NO_FLAGS: true
      - name: Cache
        id: cache
        uses: actions/cache@v4
        with:
          path: ${{env.LLVM_DIR}}
          key: build-libcxx-${{env.LLVM_VER}}-${{matrix.sanitizer}}
      - name: Clone
        if: ${{ steps.cache.outputs.cache-hit != 'true' }}
        run: >
          git clone --filter=blob:none --depth=1
          --branch llvmorg-${{env.LLVM_VER}}
          --no-checkout https://github.com/llvm/llvm-project.git llvm-project
      - name: Checkout
        if: ${{ steps.cache.outputs.cache-hit != 'true' }}
        working-directory: llvm-project
        run: |
          git sparse-checkout set --cone
          git checkout llvmorg-${{env.LLVM_VER}}
          git sparse-checkout set cmake llvm/cmake runtimes libcxx libcxxabi
      - name: Mkdir
        if: ${{ steps.cache.outputs.cache-hit != 'true' }}
        run: mkdir ${{env.LLVM_DIR}}
      - name: CMake
        if: ${{ steps.cache.outputs.cache-hit != 'true' }}
        working-directory: ${{env.LLVM_DIR}}
        run: >
          VERBOSE=1
          cmake -GNinja ../llvm-project/runtimes/
          -DCMAKE_C_COMPILER=${{env.CC}}
          -DCMAKE_CXX_COMPILER=${{env.CXX}}
          -DCMAKE_BUILD_TYPE=RelWithDebInfo
          -DCMAKE_INSTALL_PREFIX=/usr
          -DLLVM_USE_SANITIZER=${{matrix.llvm_use_sanitizer}}
          -DLLVM_BUILD_32_BITS=OFF
          -DLIBCXXABI_USE_LLVM_UNWINDER=OFF
          -DLLVM_INCLUDE_TESTS=OFF
          -DLIBCXX_INCLUDE_TESTS=OFF
          -DLIBCXX_INCLUDE_BENCHMARKS=OFF
          -DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi'
      - name: Build
        if: ${{ steps.cache.outputs.cache-hit != 'true' }}
        working-directory: ${{env.LLVM_DIR}}
        run: cmake --build . -- cxx cxxabi