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cbaa3597aa
This reverts commit d763c6e5e2d0a6b34097aa7dabca31e9aff9b0b6. Adds the patch by @hans from https://github.com/llvm/llvm-project/issues/62719 This patch fixes the Windows build. d763c6e5e2d0a6b34097aa7dabca31e9aff9b0b6 reverted the reviews D144509 [CMake] Bumps minimum version to 3.20.0. This partly undoes D137724. This change has been discussed on discourse https://discourse.llvm.org/t/rfc-upgrading-llvms-minimum-required-cmake-version/66193 Note this does not remove work-arounds for older CMake versions, that will be done in followup patches. D150532 [OpenMP] Compile assembly files as ASM, not C Since CMake 3.20, CMake explicitly passes "-x c" (or equivalent) when compiling a file which has been set as having the language C. This behaviour change only takes place if "cmake_minimum_required" is set to 3.20 or newer, or if the policy CMP0119 is set to new. Attempting to compile assembly files with "-x c" fails, however this is workarounded in many cases, as OpenMP overrides this with "-x assembler-with-cpp", however this is only added for non-Windows targets. Thus, after increasing cmake_minimum_required to 3.20, this breaks compiling the GNU assembly for Windows targets; the GNU assembly is used for ARM and AArch64 Windows targets when building with Clang. This patch unbreaks that. D150688 [cmake] Set CMP0091 to fix Windows builds after the cmake_minimum_required bump The build uses other mechanism to select the runtime. Fixes #62719 Reviewed By: #libc, Mordante Differential Revision: https://reviews.llvm.org/D151344
43 lines
1.6 KiB
CMake
43 lines
1.6 KiB
CMake
cmake_minimum_required(VERSION 3.20.0)
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if (NOT IS_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/../libunwind")
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message(FATAL_ERROR "llvm-libgcc requires being built in a monorepo layout with libunwind available")
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endif()
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set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
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list(APPEND CMAKE_MODULE_PATH
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
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"${LLVM_COMMON_CMAKE_UTILS}"
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"${LLVM_COMMON_CMAKE_UTILS}/Modules"
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)
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project(llvm-libgcc LANGUAGES C CXX ASM)
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if(NOT LLVM_LIBGCC_EXPLICIT_OPT_IN)
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message(FATAL_ERROR
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"llvm-libgcc is not for the casual LLVM user. It is intended to be used by distro "
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"managers who want to replace libgcc with compiler-rt and libunwind, but cannot "
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"fully abandon the libgcc family (e.g. because they are dependent on glibc). Such "
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"managers must have worked out their compatibility requirements ahead of using "
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"llvm-libgcc. If you want to build llvm-libgcc, please add -DLLVM_LIBGCC_EXPLICIT_OPT_IN=Yes "
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"to your CMake invocation and try again.")
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endif()
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib${LLVMLIB_DIR_SUFFIX}")
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib${LLVMLIB_DIR_SUFFIX}")
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
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set(COMPILER_RT_BUILD_BUILTINS On)
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set(COMPILER_RT_BUILTINS_HIDE_SYMBOLS Off)
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add_subdirectory("../compiler-rt" "compiler-rt")
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set(LIBUNWIND_ENABLE_STATIC On)
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set(LIBUNWIND_ENABLE_SHARED Off)
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set(LIBUNWIND_HAS_COMMENT_LIB_PRAGMA Off)
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set(LIBUNWIND_USE_COMPILER_RT On)
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add_subdirectory("../libunwind" "libunwind")
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add_subdirectory(lib)
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