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Prabhukboomanaiden154
Prabhuk
and
boomanaiden154
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[libc][Github] Perform baremetal libc builds (#167583)
Currently there are no 32 bit presubmit builds for libc. This PR performs 32 bit build only (no test) to check any changes that land in libc break 32 bit builds. Co-authored-by: Aiden Grossman <[email protected]>
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8 files changed

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‎.github/workflows/libc-fullbuild-tests.yml‎

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@@ -48,6 +48,42 @@ jobs:
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cpp_compiler: clang++-22
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target: x86_64-unknown-uefi-llvm
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include_scudo: OFF
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- os: ubuntu-24.04
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build__type: MinSizeRel
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c_compiler: clang-22
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cpp_compiler: clang++-22
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target: armv6m-none-eabi
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include_scudo: OFF
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- os: ubuntu-24.04
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build__type: MinSizeRel
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c_compiler: clang-22
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cpp_compiler: clang++-22
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target: armv7m-none-eabi
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include_scudo: OFF
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- os: ubuntu-24.04
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build__type: MinSizeRel
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c_compiler: clang-22
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cpp_compiler: clang++-22
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target: armv7em-none-eabi
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include_scudo: OFF
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- os: ubuntu-24.04
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build__type: MinSizeRel
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c_compiler: clang-22
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cpp_compiler: clang++-22
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target: armv8m.main-none-eabi
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include_scudo: OFF
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- os: ubuntu-24.04
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build__type: MinSizeRel
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c_compiler: clang-22
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cpp_compiler: clang++-22
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target: armv8.1m.main-none-eabi
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include_scudo: OFF
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- os: ubuntu-24.04
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build__type: MinSizeRel
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c_compiler: clang-22
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cpp_compiler: clang++-22
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target: riscv32-unknown-elf
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include_scudo: OFF
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# TODO: add back gcc build when it is fixed
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# - c_compiler: gcc
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# cpp_compiler: g++
@@ -93,28 +129,39 @@ jobs:
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run: |
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export RUNTIMES="libc"
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export CMAKE_FLAGS="
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-G Ninja
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-S ${{ github.workspace }}/runtimes
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-B ${{ steps.strings.outputs.build-output-dir }}
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-DCMAKE_ASM_COMPILER=${{ matrix.c_compiler }}
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-DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
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-DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
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-DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
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-DCMAKE_C_COMPILER_LAUNCHER=sccache
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-DCMAKE_CXX_COMPILER_LAUNCHER=sccache
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-DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.build-install-dir }}"
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if [[ ${{ matrix.include_scudo}} == "ON" ]]; then
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export RUNTIMES="$RUNTIMES;compiler-rt"
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export CMAKE_FLAGS="
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export CMAKE_FLAGS="$CMAKE_FLAGS
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-DLLVM_LIBC_INCLUDE_SCUDO=ON
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-DCOMPILER_RT_BUILD_SCUDO_STANDALONE_WITH_LLVM_LIBC=ON
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-DCOMPILER_RT_BUILD_GWP_ASAN=OFF
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-DCOMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED=OFF"
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fi
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cmake -B ${{ steps.strings.outputs.build-output-dir }} \
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-DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} \
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-DCMAKE_C_COMPILER=${{ matrix.c_compiler }} \
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-DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
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-DCMAKE_C_COMPILER_LAUNCHER=sccache \
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-DCMAKE_CXX_COMPILER_LAUNCHER=sccache \
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-DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.build-install-dir }} \
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-DLLVM_RUNTIME_TARGETS=${{ matrix.target }} \
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-DLLVM_ENABLE_RUNTIMES="$RUNTIMES" \
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-DLLVM_LIBC_FULL_BUILD=ON \
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-G Ninja \
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-S ${{ github.workspace }}/runtimes \
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$CMAKE_FLAGS
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case "${{ matrix.target }}" in
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*-none-eabi|riscv32-unknown-elf)
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cmake $CMAKE_FLAGS \
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-C ${{ github.workspace }}/libc/cmake/caches/${{ matrix.target }}.cmake
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;;
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*)
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cmake -DLLVM_RUNTIME_TARGETS=${{ matrix.target }} \
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-DLLVM_ENABLE_RUNTIMES="$RUNTIMES" \
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-DLLVM_LIBC_FULL_BUILD=ON \
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$CMAKE_FLAGS
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;;
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esac
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- name: Build
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run: >
@@ -124,8 +171,12 @@ jobs:
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--target install
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- name: Test
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# Skip UEFI tests until we have testing set up.
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if: ${{ ! endsWith(matrix.target, '-uefi-llvm') }}
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# Skip UEFI and baremetal tests until we have testing set up.
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if: ${{
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!endsWith(matrix.target, '-uefi-llvm') &&
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!endsWith(matrix.target, '-none-eabi') &&
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matrix.target != 'riscv32-unknown-elf'
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}}
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run: >
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cmake
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--build ${{ steps.strings.outputs.build-output-dir }}

‎libc/cmake/caches/armv6m-none-eabi.cmake‎

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set(CMAKE_SYSTEM_PROCESSOR arm CACHE STRING "")
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set(RUNTIMES_TARGET_TRIPLE "armv6m-none-eabi" CACHE STRING "")
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foreach(lang C;CXX;ASM)
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set(CMAKE_${lang}_FLAGS "-march=armv6m -mcpu=cortex-m0plus -mfloat-abi=soft -Wno-atomic-alignment \"-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)\" \"-Dfprintf(stream, format, ...)=printf(format)\" \"-Dfputs(string, stream)=puts(string)\" -D_LIBCPP_PRINT=1" CACHE STRING "")
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endforeach()
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include(${CMAKE_CURRENT_LIST_DIR}/baremetal_common.cmake)

‎libc/cmake/caches/armv7em-none-eabi.cmake‎

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set(CMAKE_SYSTEM_PROCESSOR arm CACHE STRING "")
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set(RUNTIMES_TARGET_TRIPLE "armv7em-none-eabi" CACHE STRING "")
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foreach(lang C;CXX;ASM)
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set(CMAKE_${lang}_FLAGS "-march=armv7em -mcpu=cortex-m4 -mfloat-abi=soft -Wno-atomic-alignment \"-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)\" \"-Dfprintf(stream, format, ...)=printf(format)\" \"-Dfputs(string, stream)=puts(string)\" -D_LIBCPP_PRINT=1" CACHE STRING "")
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endforeach()
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include(${CMAKE_CURRENT_LIST_DIR}/baremetal_common.cmake)

‎libc/cmake/caches/armv7m-none-eabi.cmake‎

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set(CMAKE_SYSTEM_PROCESSOR arm CACHE STRING "")
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set(RUNTIMES_TARGET_TRIPLE "armv7m-none-eabi" CACHE STRING "")
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foreach(lang C;CXX;ASM)
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set(CMAKE_${lang}_FLAGS "-march=armv7m -mcpu=cortex-m4 -mfloat-abi=soft -Wno-atomic-alignment \"-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)\" \"-Dfprintf(stream, format, ...)=printf(format)\" \"-Dfputs(string, stream)=puts(string)\" -D_LIBCPP_PRINT=1" CACHE STRING "")
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endforeach()
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include(${CMAKE_CURRENT_LIST_DIR}/baremetal_common.cmake)

‎libc/cmake/caches/armv8.1m.main-none-eabi.cmake‎

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set(CMAKE_SYSTEM_PROCESSOR arm CACHE STRING "")
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set(RUNTIMES_TARGET_TRIPLE "armv8.1m.main-none-eabi" CACHE STRING "")
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foreach(lang C;CXX;ASM)
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set(CMAKE_${lang}_FLAGS "-mfloat-abi=hard -march=armv8.1-m.main+mve.fp+fp.dp -mcpu=cortex-m55" CACHE STRING "")
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endforeach()
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include(${CMAKE_CURRENT_LIST_DIR}/baremetal_common.cmake)

‎libc/cmake/caches/armv8m.main-none-eabi.cmake‎

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set(CMAKE_SYSTEM_PROCESSOR arm CACHE STRING "")
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set(RUNTIMES_TARGET_TRIPLE "armv8m.main-none-eabi" CACHE STRING "")
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foreach(lang C;CXX;ASM)
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set(CMAKE_${lang}_FLAGS "-mfloat-abi=softfp -march=armv8m.main+fp+dsp -mcpu=cortex-m33" CACHE STRING "")
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endforeach()
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include(${CMAKE_CURRENT_LIST_DIR}/baremetal_common.cmake)

‎libc/cmake/caches/baremetal_common.cmake‎

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# Expects target triple to be passed as `RUNTIMES_TARGET_TRIPLE`
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set(CMAKE_SYSTEM_NAME Generic CACHE STRING "")
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY CACHE STRING "")
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set(LLVM_ENABLE_RUNTIMES "libc" CACHE STRING "")
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set(LLVM_INCLUDE_TESTS OFF CACHE BOOL "")
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set(CMAKE_C_COMPILER_WORKS ON CACHE BOOL "")
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set(CMAKE_CXX_COMPILER_WORKS ON CACHE BOOL "")
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set(CMAKE_SYSROOT "" CACHE STRING "")
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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set(CMAKE_C_COMPILER_TARGET ${RUNTIMES_TARGET_TRIPLE} CACHE STRING "")
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set(CMAKE_CXX_COMPILER_TARGET ${RUNTIMES_TARGET_TRIPLE} CACHE STRING "")
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set(CMAKE_ASM_COMPILER_TARGET ${RUNTIMES_TARGET_TRIPLE} CACHE STRING "")
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set(LLVM_DEFAULT_TARGET_TRIPLE ${RUNTIMES_TARGET_TRIPLE} CACHE STRING "")
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set(LIBC_TARGET_TRIPLE ${RUNTIMES_TARGET_TRIPLE} CACHE STRING "")
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set(LLVM_LIBC_FULL_BUILD "ON" CACHE BOOL "")

‎libc/cmake/caches/riscv32-unknown-elf.cmake‎

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set(CMAKE_SYSTEM_PROCESSOR RISCV CACHE STRING "")
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set(RUNTIMES_TARGET_TRIPLE "riscv32-unknown-elf" CACHE STRING "")
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include(${CMAKE_CURRENT_LIST_DIR}/baremetal_common.cmake)

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