forked from OSchip/llvm-project
265 lines
10 KiB
CMake
265 lines
10 KiB
CMake
include(CheckCXXCompilerFlag)
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include(CheckLibraryExists)
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include(CheckSymbolExists)
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# CodeGen options.
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check_cxx_compiler_flag(-fPIC COMPILER_RT_HAS_FPIC_FLAG)
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check_cxx_compiler_flag(-fPIE COMPILER_RT_HAS_FPIE_FLAG)
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check_cxx_compiler_flag(-fno-builtin COMPILER_RT_HAS_FNO_BUILTIN_FLAG)
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check_cxx_compiler_flag(-fno-exceptions COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG)
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check_cxx_compiler_flag(-fomit-frame-pointer COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG)
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check_cxx_compiler_flag(-funwind-tables COMPILER_RT_HAS_FUNWIND_TABLES_FLAG)
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check_cxx_compiler_flag(-fno-stack-protector COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG)
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check_cxx_compiler_flag(-fvisibility=hidden COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG)
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check_cxx_compiler_flag(-fno-rtti COMPILER_RT_HAS_FNO_RTTI_FLAG)
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check_cxx_compiler_flag(-ffreestanding COMPILER_RT_HAS_FFREESTANDING_FLAG)
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check_cxx_compiler_flag("-Werror -fno-function-sections" COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG)
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check_cxx_compiler_flag(-std=c++11 COMPILER_RT_HAS_STD_CXX11_FLAG)
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check_cxx_compiler_flag(-ftls-model=initial-exec COMPILER_RT_HAS_FTLS_MODEL_INITIAL_EXEC)
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check_cxx_compiler_flag(/GR COMPILER_RT_HAS_GR_FLAG)
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check_cxx_compiler_flag(/GS COMPILER_RT_HAS_GS_FLAG)
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check_cxx_compiler_flag(/MT COMPILER_RT_HAS_MT_FLAG)
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check_cxx_compiler_flag(/Oy COMPILER_RT_HAS_Oy_FLAG)
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# Debug info flags.
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check_cxx_compiler_flag(-gline-tables-only COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG)
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check_cxx_compiler_flag(-g COMPILER_RT_HAS_G_FLAG)
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check_cxx_compiler_flag(/Zi COMPILER_RT_HAS_Zi_FLAG)
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# Warnings.
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check_cxx_compiler_flag(-Wall COMPILER_RT_HAS_WALL_FLAG)
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check_cxx_compiler_flag(-Werror COMPILER_RT_HAS_WERROR_FLAG)
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check_cxx_compiler_flag("-Werror -Wframe-larger-than=512" COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG)
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check_cxx_compiler_flag("-Werror -Wglobal-constructors" COMPILER_RT_HAS_WGLOBAL_CONSTRUCTORS_FLAG)
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check_cxx_compiler_flag("-Werror -Wc99-extensions" COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG)
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check_cxx_compiler_flag("-Werror -Wgnu" COMPILER_RT_HAS_WGNU_FLAG)
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check_cxx_compiler_flag("-Werror -Wnon-virtual-dtor" COMPILER_RT_HAS_WNON_VIRTUAL_DTOR_FLAG)
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check_cxx_compiler_flag("-Werror -Wvariadic-macros" COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG)
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check_cxx_compiler_flag(/W3 COMPILER_RT_HAS_W3_FLAG)
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check_cxx_compiler_flag(/WX COMPILER_RT_HAS_WX_FLAG)
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check_cxx_compiler_flag(/wd4146 COMPILER_RT_HAS_WD4146_FLAG)
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check_cxx_compiler_flag(/wd4291 COMPILER_RT_HAS_WD4291_FLAG)
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check_cxx_compiler_flag(/wd4391 COMPILER_RT_HAS_WD4391_FLAG)
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check_cxx_compiler_flag(/wd4722 COMPILER_RT_HAS_WD4722_FLAG)
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check_cxx_compiler_flag(/wd4800 COMPILER_RT_HAS_WD4800_FLAG)
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# Symbols.
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check_symbol_exists(__func__ "" COMPILER_RT_HAS_FUNC_SYMBOL)
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# Libraries.
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check_library_exists(c printf "" COMPILER_RT_HAS_LIBC)
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check_library_exists(dl dlopen "" COMPILER_RT_HAS_LIBDL)
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check_library_exists(m pow "" COMPILER_RT_HAS_LIBM)
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check_library_exists(pthread pthread_create "" COMPILER_RT_HAS_LIBPTHREAD)
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check_library_exists(stdc++ __cxa_throw "" COMPILER_RT_HAS_LIBSTDCXX)
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# Architectures.
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# List of all architectures we can target.
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set(COMPILER_RT_SUPPORTED_ARCH)
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# Try to compile a very simple source file to ensure we can target the given
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# platform. We use the results of these tests to build only the various target
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# runtime libraries supported by our current compilers cross-compiling
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# abilities.
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set(SIMPLE_SOURCE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/simple.cc)
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file(WRITE ${SIMPLE_SOURCE} "#include <stdlib.h>\n#include <limits>\nint main() {}\n")
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# test_target_arch(<arch> <target flags...>)
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# Sets the target flags for a given architecture and determines if this
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# architecture is supported by trying to build a simple file.
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macro(test_target_arch arch)
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set(TARGET_${arch}_CFLAGS ${ARGN})
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set(argstring "${CMAKE_EXE_LINKER_FLAGS}")
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foreach(arg ${ARGN})
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set(argstring "${argstring} ${arg}")
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endforeach()
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try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE}
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COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS}"
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OUTPUT_VARIABLE TARGET_${arch}_OUTPUT
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CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${argstring}")
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if(${CAN_TARGET_${arch}})
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list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
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elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "${arch}")
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# Bail out if we cannot target the architecture we plan to test.
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message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}")
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endif()
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endmacro()
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# Add $arch as supported with no additional flags.
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macro(add_default_target_arch arch)
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set(TARGET_${arch}_CFLAGS "")
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set(CAN_TARGET_${arch} 1)
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list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
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endmacro()
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macro(detect_target_arch)
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check_symbol_exists(__arm__ "" __ARM)
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check_symbol_exists(__aarch64__ "" __AARCH64)
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check_symbol_exists(__x86_64__ "" __X86_64)
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check_symbol_exists(__i686__ "" __I686)
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check_symbol_exists(__i386__ "" __I386)
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check_symbol_exists(__mips__ "" __MIPS)
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check_symbol_exists(__mips64__ "" __MIPS64)
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if(__ARM)
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add_default_target_arch(arm)
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elseif(__AARCH64)
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add_default_target_arch(aarch64)
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elseif(__X86_64)
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add_default_target_arch(x86_64)
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elseif(__I686)
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add_default_target_arch(i686)
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elseif(__I386)
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add_default_target_arch(i386)
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elseif(__MIPS64) # must be checked before __MIPS
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add_default_target_arch(mips64)
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elseif(__MIPS)
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add_default_target_arch(mips)
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endif()
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endmacro()
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# Generate the COMPILER_RT_SUPPORTED_ARCH list.
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if(ANDROID)
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# Can't rely on LLVM_NATIVE_ARCH in cross-compilation.
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# Examine compiler output instead.
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detect_target_arch()
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set(COMPILER_RT_OS_SUFFIX "-android")
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else()
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if("${LLVM_NATIVE_ARCH}" STREQUAL "X86")
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if (NOT MSVC)
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test_target_arch(x86_64 ${TARGET_64_BIT_CFLAGS})
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endif()
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test_target_arch(i386 ${TARGET_32_BIT_CFLAGS})
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elseif("${LLVM_NATIVE_ARCH}" STREQUAL "PowerPC")
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test_target_arch(powerpc64 ${TARGET_64_BIT_CFLAGS})
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test_target_arch(powerpc64le ${TARGET_64_BIT_CFLAGS})
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elseif("${LLVM_NATIVE_ARCH}" STREQUAL "Mips")
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if("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "mipsel|mips64el")
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# regex for mipsel, mips64el
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test_target_arch(mipsel ${TARGET_32_BIT_CFLAGS})
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test_target_arch(mips64el ${TARGET_64_BIT_CFLAGS})
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else()
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test_target_arch(mips ${TARGET_32_BIT_CFLAGS})
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test_target_arch(mips64 ${TARGET_64_BIT_CFLAGS})
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endif()
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elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "arm")
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test_target_arch(arm "-march=armv7-a")
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elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "aarch32")
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test_target_arch(aarch32 "-march=armv8-a")
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elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "aarch64")
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test_target_arch(aarch64 "-march=armv8-a")
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endif()
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set(COMPILER_RT_OS_SUFFIX "")
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endif()
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message(STATUS "Compiler-RT supported architectures: ${COMPILER_RT_SUPPORTED_ARCH}")
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# Takes ${ARGN} and puts only supported architectures in @out_var list.
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function(filter_available_targets out_var)
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set(archs)
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foreach(arch ${ARGN})
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list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX)
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if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch})
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list(APPEND archs ${arch})
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endif()
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endforeach()
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set(${out_var} ${archs} PARENT_SCOPE)
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endfunction()
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# Arhcitectures supported by compiler-rt libraries.
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filter_available_targets(SANITIZER_COMMON_SUPPORTED_ARCH
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x86_64 i386 i686 powerpc64 powerpc64le arm aarch64 mips mips64 mipsel mips64el)
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filter_available_targets(ASAN_SUPPORTED_ARCH
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x86_64 i386 i686 powerpc64 powerpc64le arm mips mipsel mips64 mips64el)
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filter_available_targets(DFSAN_SUPPORTED_ARCH x86_64 mips64 mips64el)
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filter_available_targets(LSAN_SUPPORTED_ARCH x86_64)
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# LSan common files should be available on all architectures supported
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# by other sanitizers (even if they build into dummy object files).
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filter_available_targets(LSAN_COMMON_SUPPORTED_ARCH
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${SANITIZER_COMMON_SUPPORTED_ARCH})
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filter_available_targets(MSAN_SUPPORTED_ARCH x86_64 mips64 mips64el)
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filter_available_targets(PROFILE_SUPPORTED_ARCH x86_64 i386 i686 arm mips mips64
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mipsel mips64el aarch64 powerpc64 powerpc64le)
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filter_available_targets(TSAN_SUPPORTED_ARCH x86_64)
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filter_available_targets(UBSAN_SUPPORTED_ARCH x86_64 i386 i686 arm aarch64 mips mipsel mips64 mips64el)
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if(ANDROID)
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set(OS_NAME "Android")
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else()
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set(OS_NAME "${CMAKE_SYSTEM_NAME}")
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endif()
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if (SANITIZER_COMMON_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
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(OS_NAME MATCHES "Android|Darwin|Linux|FreeBSD" OR
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(OS_NAME MATCHES "Windows" AND MSVC AND CMAKE_SIZEOF_VOID_P EQUAL 4)))
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set(COMPILER_RT_HAS_SANITIZER_COMMON TRUE)
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else()
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set(COMPILER_RT_HAS_SANITIZER_COMMON FALSE)
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endif()
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND ASAN_SUPPORTED_ARCH)
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set(COMPILER_RT_HAS_ASAN TRUE)
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else()
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set(COMPILER_RT_HAS_ASAN FALSE)
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endif()
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if (OS_NAME MATCHES "Linux|FreeBSD")
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set(COMPILER_RT_ASAN_HAS_STATIC_RUNTIME TRUE)
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else()
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set(COMPILER_RT_ASAN_HAS_STATIC_RUNTIME FALSE)
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endif()
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# TODO: Add builtins support.
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND DFSAN_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Linux")
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set(COMPILER_RT_HAS_DFSAN TRUE)
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else()
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set(COMPILER_RT_HAS_DFSAN FALSE)
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endif()
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND LSAN_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Darwin|Linux|FreeBSD")
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set(COMPILER_RT_HAS_LSAN TRUE)
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else()
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set(COMPILER_RT_HAS_LSAN FALSE)
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endif()
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND LSAN_COMMON_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Darwin|Linux|FreeBSD|Android")
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set(COMPILER_RT_HAS_LSAN_COMMON TRUE)
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else()
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set(COMPILER_RT_HAS_LSAN_COMMON FALSE)
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endif()
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND MSAN_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Linux")
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set(COMPILER_RT_HAS_MSAN TRUE)
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else()
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set(COMPILER_RT_HAS_MSAN FALSE)
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endif()
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if (PROFILE_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Darwin|Linux|FreeBSD")
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set(COMPILER_RT_HAS_PROFILE TRUE)
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else()
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set(COMPILER_RT_HAS_PROFILE FALSE)
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endif()
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND TSAN_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Linux|FreeBSD")
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set(COMPILER_RT_HAS_TSAN TRUE)
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else()
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set(COMPILER_RT_HAS_TSAN FALSE)
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endif()
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if (COMPILER_RT_HAS_SANITIZER_COMMON AND UBSAN_SUPPORTED_ARCH AND
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OS_NAME MATCHES "Darwin|Linux|FreeBSD")
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set(COMPILER_RT_HAS_UBSAN TRUE)
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else()
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set(COMPILER_RT_HAS_UBSAN FALSE)
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endif()
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