8f90e6937a
I recently came across LIBCXXABI_USE_LLVM_UNWINDER and was surprised to notice it was disabled by default. Since we build libunwind by default and ship it in the LLVM toolchain, it would seem to make sense that libc++ and libc++abi rely on libunwind for unwinding instead of using the system-provided unwinding library (if any). Most importantly, using the system unwinder implies that libc++abi is ABI compatible with that system unwinder, which is not necessarily the case. Hence, it makes a lot more sense to instead default to using the known-to-be-compatible LLVM unwinder, and let vendors manually select a different unwinder if desired. As a follow-up change, we should probably apply the same default to compiler-rt. Differential Revision: https://reviews.llvm.org/D150897 Fixes #77662 rdar://120801778
42 lines
2.0 KiB
CMake
42 lines
2.0 KiB
CMake
set(CMAKE_ASM_COMPILER_TARGET "armv7m-none-eabi" CACHE STRING "")
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set(CMAKE_CXX_COMPILER_TARGET "armv7m-none-eabi" CACHE STRING "")
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set(CMAKE_CXX_FLAGS "-mfloat-abi=soft" CACHE STRING "")
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set(CMAKE_C_COMPILER_TARGET "armv7m-none-eabi" CACHE STRING "")
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set(CMAKE_C_FLAGS "-mfloat-abi=soft" CACHE STRING "")
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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(COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "")
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set(COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_PROFILE OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
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set(COMPILER_RT_BUILD_XRAY OFF CACHE BOOL "")
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set(COMPILER_RT_DEFAULT_TARGET_ONLY ON CACHE BOOL "")
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set(LIBCXXABI_BAREMETAL ON CACHE BOOL "")
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set(LIBCXXABI_ENABLE_ASSERTIONS OFF CACHE BOOL "")
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set(LIBCXXABI_ENABLE_EXCEPTIONS ON CACHE BOOL "")
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set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
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set(LIBCXXABI_ENABLE_STATIC ON CACHE BOOL "")
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set(LIBCXXABI_ENABLE_STATIC_UNWINDER ON CACHE BOOL "")
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set(LIBCXXABI_ENABLE_THREADS OFF CACHE BOOL "")
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set(LIBCXXABI_USE_COMPILER_RT ON CACHE BOOL "")
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set(LIBCXX_ENABLE_EXCEPTIONS ON CACHE BOOL "")
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set(LIBCXX_ENABLE_FILESYSTEM OFF CACHE STRING "")
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set(LIBCXX_ENABLE_MONOTONIC_CLOCK OFF CACHE BOOL "")
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set(LIBCXX_ENABLE_RANDOM_DEVICE OFF CACHE BOOL "")
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set(LIBCXX_ENABLE_RTTI ON CACHE BOOL "")
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set(LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")
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set(LIBCXX_ENABLE_STATIC ON CACHE BOOL "")
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set(LIBCXX_ENABLE_THREADS OFF CACHE BOOL "")
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set(LIBCXX_ENABLE_WIDE_CHARACTERS OFF CACHE BOOL "")
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set(LIBCXX_INCLUDE_BENCHMARKS OFF CACHE BOOL "")
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# Long tests are prohibitively slow when run via emulation.
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set(LIBCXX_TEST_PARAMS "long_tests=False" CACHE STRING "")
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set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
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set(LIBUNWIND_ENABLE_SHARED OFF CACHE BOOL "")
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set(LIBUNWIND_ENABLE_STATIC ON CACHE BOOL "")
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set(LIBUNWIND_ENABLE_THREADS OFF CACHE BOOL "")
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set(LIBUNWIND_IS_BAREMETAL ON CACHE BOOL "")
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set(LIBUNWIND_REMEMBER_HEAP_ALLOC ON CACHE BOOL "")
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set(LIBUNWIND_USE_COMPILER_RT ON CACHE BOOL "")
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find_program(QEMU_SYSTEM_ARM qemu-system-arm REQUIRED)
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