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AlexDenisovAlexDenisov
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Build custom toolchains
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‎.github/workflows/toolchain.yml‎

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name: Build toolchain
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env:
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LLVM_REF: "cd708029e0b2869e80abe31ddb175f7c35361f90" # 19.1.7
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# GH Actions are dead slow, can't build two-stage
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CMAKE_CACHE: "SingleStage" # ToolchainCache
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STAGE: "" # stage2-
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on:
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push:
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branches: ["main"]
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pull_request:
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branches: ["main"]
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jobs:
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toolchain-build:
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name: ${{ matrix.OS }} toolchain (${{ matrix.ARCH}})
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runs-on: ${{ matrix.RUNNER }}
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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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- ARCH: x86_64
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RUNNER: ubuntu-22.04
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OS: Linux
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- ARCH: aarch64
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RUNNER: ubuntu-22.04-arm
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OS: Linux
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- ARCH: aarch64
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RUNNER: macos-latest
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OS: Darwin
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steps:
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- uses: actions/checkout@v5
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- uses: hendrikmuhs/[email protected]
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with:
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max-size: "5000MB"
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- uses: actions/checkout@v5
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with:
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repository: 'llvm/llvm-project'
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ref: ${{ env.LLVM_REF }}
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path: 'llvm'
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- name: Install deps
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if: matrix.OS == 'Linux'
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run: |
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sudo apt-get install ninja-build
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- name: Build toolchain
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run: |
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mkdir build.dir
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cmake -G Ninja \
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-B build.dir \
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-C ${{ env.CMAKE_CACHE }}.cmake \
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llvm/llvm \
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-DCMAKE_INSTALL_PREFIX=${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain
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cmake --build build.dir --target ${{ env.STAGE }}distribution
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cmake --build build.dir --target ${{ env.STAGE }}install-distribution
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- name: Package toolchain
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run: |
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tar -cvzf \
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${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain.tar.gz \
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${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain
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tar cvfJ \
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${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain.tar.xz \
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${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain
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- name: Upload toolchain
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uses: svenstaro/upload-release-action@v2
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with:
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repo_token: ${{ secrets.GITHUB_TOKEN }}
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file: "*.tar.*"
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tag: ${{ github.run_id }}
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overwrite: true
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file_glob: true
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target_commit: ${{ github.sha }}

‎.gitignore‎

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build.dir
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*.toolchain
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*.tar.gz
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*.tar.xz
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‎README.md‎

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# toolchains
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# toolchains
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Custom LLVM toolchains for Mull.

‎SingleStage.cmake‎

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# Based on clang/cmake/caches/DistributionExample-stage2.cmake
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set(LLVM_ENABLE_PROJECTS "clang;clang-tools-extra;lld" CACHE STRING "")
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set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
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set(LLVM_TARGETS_TO_BUILD X86;ARM;AArch64 CACHE STRING "")
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set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
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set(LLVM_CCACHE_BUILD ON CACHE BOOL "")
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set(LLVM_ENABLE_ZSTD OFF CACHE BOOL "")
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set(LLVM_ENABLE_TERMINFO OFF CACHE BOOL "")
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set(LLVM_ENABLE_ZLIB OFF CACHE BOOL "")
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set(LLVM_STATIC_LINK_CXX_STDLIB ON CACHE BOOL "")
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set(CMAKE_BUILD_TYPE Release CACHE STRING "")
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if(APPLE)
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set(libtool_darwin llvm-libtool-darwin)
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endif()
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# setup toolchain
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set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
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set(LLVM_TOOLCHAIN_TOOLS
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${libtool_darwin}
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clang-format
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clang-tidy
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llvm-ar
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llvm-dwp
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llvm-nm
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llvm-objcopy
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llvm-objdump
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llvm-profdata
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llvm-ranlib
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llvm-strip
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llvm-symbolizer
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clangd
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llvm-cov
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CACHE STRING "")
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set(LLVM_DISTRIBUTION_COMPONENTS
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clang
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LTO
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lld
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clang-format
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clang-resource-headers
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builtins
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runtimes
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${LLVM_TOOLCHAIN_TOOLS}
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CACHE STRING "")

‎ToolchainCache-stage2.cmake‎

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# Based on clang/cmake/caches/DistributionExample-stage2.cmake
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# This file sets up a CMakeCache for the second stage of a simple distribution
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# bootstrap build.
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set(LLVM_ENABLE_PROJECTS "clang;clang-tools-extra;lld" CACHE STRING "")
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set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
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set(LLVM_TARGETS_TO_BUILD X86;ARM;AArch64 CACHE STRING "")
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set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
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set(LLVM_CCACHE_BUILD ON CACHE BOOL "")
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set(LLVM_ENABLE_ZSTD OFF CACHE BOOL "")
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set(LLVM_ENABLE_TERMINFO OFF CACHE BOOL "")
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set(LLVM_ENABLE_ZLIB OFF CACHE BOOL "")
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set(CMAKE_BUILD_TYPE Release CACHE STRING "")
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if(APPLE)
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set(libtool_darwin llvm-libtool-darwin)
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endif()
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# setup toolchain
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set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
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set(LLVM_TOOLCHAIN_TOOLS
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${libtool_darwin}
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clang-format
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clang-tidy
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llvm-ar
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llvm-dwp
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llvm-nm
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llvm-objcopy
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llvm-objdump
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llvm-profdata
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llvm-ranlib
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llvm-strip
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llvm-symbolizer
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CACHE STRING "")
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set(LLVM_DISTRIBUTION_COMPONENTS
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clang
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LTO
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lld
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clang-format
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clang-resource-headers
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builtins
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runtimes
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${LLVM_TOOLCHAIN_TOOLS}
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CACHE STRING "")

‎ToolchainCache.cmake‎

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# Based on clang/cmake/caches/DistributionExample.cmake
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# This file sets up a CMakeCache for a simple distribution bootstrap build.
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# Enable LLVM projects and runtimes
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set(LLVM_ENABLE_PROJECTS "clang;clang-tools-extra;lld" CACHE STRING "")
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set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
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set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
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set(LLVM_CCACHE_BUILD ON CACHE BOOL "")
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set(LLVM_ENABLE_ZSTD OFF CACHE BOOL "")
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set(LLVM_ENABLE_TERMINFO OFF CACHE BOOL "")
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set(LLVM_ENABLE_ZLIB OFF CACHE BOOL "")
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# Only build the native target in stage1 since it is a throwaway build.
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set(LLVM_TARGETS_TO_BUILD Native CACHE STRING "")
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# Optimize the stage1 compiler, but don't LTO it because that wastes time.
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set(CMAKE_BUILD_TYPE Release CACHE STRING "")
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# Setup vendor-specific settings.
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set(PACKAGE_VENDOR LLVM.org CACHE STRING "")
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# Setting up the stage2 LTO option needs to be done on the stage1 build so that
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# the proper LTO library dependencies can be connected.
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set(BOOTSTRAP_LLVM_ENABLE_LTO ON CACHE BOOL "")
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if(NOT APPLE)
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# Since LLVM_ENABLE_LTO is ON we need a LTO capable linker
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set(BOOTSTRAP_LLVM_ENABLE_LLD ON CACHE BOOL "")
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endif()
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# Expose stage2 targets through the stage1 build configuration.
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set(CLANG_BOOTSTRAP_TARGETS
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check-all
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check-llvm
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check-clang
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llvm-config
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test-suite
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test-depends
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llvm-test-depends
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clang-test-depends
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distribution
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install-distribution
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clang CACHE STRING "")
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# Setup the bootstrap build.
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set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
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if(STAGE2_CACHE_FILE)
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set(CLANG_BOOTSTRAP_CMAKE_ARGS
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-C ${STAGE2_CACHE_FILE}
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CACHE STRING "")
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else()
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set(CLANG_BOOTSTRAP_CMAKE_ARGS
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-C ${CMAKE_CURRENT_LIST_DIR}/ToolchainCache-stage2.cmake
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CACHE STRING "")
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endif()

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