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279 lines
12 KiB
279 lines
12 KiB
4 months ago
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# CMake build for CompilerRT.
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#
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# This build assumes that CompilerRT is checked out into the
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# 'projects/compiler-rt' inside of an LLVM tree.
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# Standalone build system for CompilerRT is not yet ready.
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#
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# An important constraint of the build is that it only produces libraries
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# based on the ability of the host toolchain to target various platforms.
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# Check if compiler-rt is built as a standalone project.
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if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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project(CompilerRT C CXX ASM)
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set(COMPILER_RT_STANDALONE_BUILD TRUE)
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endif()
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cmake_minimum_required(VERSION 3.4.3)
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# FIXME:
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# The OLD behavior (pre 3.2) for this policy is to not set the value of the
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# CMAKE_EXE_LINKER_FLAGS variable in the generated test project. The NEW behavior
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# for this policy is to set the value of the CMAKE_EXE_LINKER_FLAGS variable
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# in the test project to the same as it is in the calling project. The new
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# behavior cause the compiler_rt test to fail during try_compile: see
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# projects/compiler-rt/cmake/Modules/CompilerRTUtils.cmake:121 such that
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# CAN_TARGET_${arch} is not set properly. This results in COMPILER_RT_SUPPORTED_ARCH
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# not being updated properly leading to poblems.
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cmake_policy(SET CMP0056 OLD)
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# Add path for custom compiler-rt modules.
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list(INSERT CMAKE_MODULE_PATH 0
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
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"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
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)
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include(base-config-ix)
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option(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON)
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mark_as_advanced(COMPILER_RT_BUILD_BUILTINS)
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option(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON)
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mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS)
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if (COMPILER_RT_STANDALONE_BUILD)
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if (NOT LLVM_CONFIG_PATH)
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find_program(LLVM_CONFIG_PATH "llvm-config"
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DOC "Path to llvm-config binary")
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if (NOT LLVM_CONFIG_PATH)
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message(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH")
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endif()
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endif()
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execute_process(
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COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root"
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RESULT_VARIABLE HAD_ERROR
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OUTPUT_VARIABLE CONFIG_OUTPUT)
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if (HAD_ERROR)
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message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
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endif()
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string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
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list(GET CONFIG_OUTPUT 0 LLVM_BINARY_DIR)
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list(GET CONFIG_OUTPUT 1 LLVM_TOOLS_BINARY_DIR)
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list(GET CONFIG_OUTPUT 2 LLVM_LIBRARY_DIR)
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list(GET CONFIG_OUTPUT 3 LLVM_MAIN_SRC_DIR)
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# Make use of LLVM CMake modules.
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file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE)
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set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
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list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
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# Get some LLVM variables from LLVMConfig.
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include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
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set(LLVM_LIBRARY_OUTPUT_INTDIR
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${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
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# Find Python interpreter.
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set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
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include(FindPythonInterp)
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if(NOT PYTHONINTERP_FOUND)
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message(FATAL_ERROR "
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Unable to find Python interpreter required testing. Please install Python
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or specify the PYTHON_EXECUTABLE CMake variable.")
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endif()
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# Define default arguments to lit.
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set(LIT_ARGS_DEFAULT "-sv")
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if (MSVC OR XCODE)
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set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
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endif()
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set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
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endif()
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING
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"Default triple for which compiler-rt runtimes will be built.")
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if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE)
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# Backwards compatibility: this variable used to be called
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# COMPILER_RT_TEST_TARGET_TRIPLE.
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE})
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endif()
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string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE})
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list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH)
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list(GET TARGET_TRIPLE_LIST 1 COMPILER_RT_DEFAULT_TARGET_OS)
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list(GET TARGET_TRIPLE_LIST 2 COMPILER_RT_DEFAULT_TARGET_ABI)
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# Determine if test target triple is specified explicitly, and doesn't match the
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# default.
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if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL TARGET_TRIPLE)
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set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE)
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else()
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set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE)
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endif()
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if ("${COMPILER_RT_DEFAULT_TARGET_ABI}" STREQUAL "androideabi")
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set(ANDROID 1)
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endif()
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include(CompilerRTUtils)
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set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
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# We support running instrumented tests when we're not cross compiling
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# and target a UNIX-like system or Windows.
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# We can run tests on Android even when we are cross-compiling.
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if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR WIN32)) OR ANDROID
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OR COMPILER_RT_EMULATOR)
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option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON)
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else()
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option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF)
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endif()
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option(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF)
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option(COMPILER_RT_EXTERNALIZE_DEBUGINFO
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"Generate dSYM files and strip executables and libraries (Darwin Only)" OFF)
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# COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in.
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pythonize_bool(COMPILER_RT_DEBUG)
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#================================
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# Setup Compiler Flags
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#================================
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include(config-ix)
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if(MSVC)
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# Override any existing /W flags with /W4. This is what LLVM does. Failing to
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# remove other /W[0-4] flags will result in a warning about overriding a
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# previous flag.
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if (COMPILER_RT_HAS_W4_FLAG)
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string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
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string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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append_string_if(COMPILER_RT_HAS_W4_FLAG /W4 CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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else()
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append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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if(COMPILER_RT_ENABLE_WERROR)
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append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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append_string_if(COMPILER_RT_HAS_STD_CXX11_FLAG -std=c++11 CMAKE_CXX_FLAGS)
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# Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP.
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if(NOT COMPILER_RT_HAS_FUNC_SYMBOL)
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add_definitions(-D__func__=__FUNCTION__)
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endif()
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# Provide some common commmandline flags for Sanitizer runtimes.
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append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS)
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if(NOT COMPILER_RT_DEBUG)
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append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS)
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endif()
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append_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FVISIBILITY_INLINES_HIDDEN_FLAG -fvisibility-inlines-hidden SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS)
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if(MSVC)
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# Replace the /M[DT][d] flags with /MT, and strip any definitions of _DEBUG,
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# which cause definition mismatches at link time.
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# FIXME: In fact, sanitizers should support both /MT and /MD, see PR20214.
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if(COMPILER_RT_HAS_MT_FLAG)
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foreach(flag_var
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CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
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CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
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CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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string(REGEX REPLACE "/M[DT]d" "/MT" ${flag_var} "${${flag_var}}")
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string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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string(REGEX REPLACE "/D_DEBUG" "" ${flag_var} "${${flag_var}}")
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endforeach()
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endif()
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append_list_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS)
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# VS 2015 (version 1900) added support for thread safe static initialization.
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# However, ASan interceptors run before CRT initialization, which causes the
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# new thread safe code to crash. Disable this feature for now.
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if (MSVC_VERSION GREATER 1899)
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list(APPEND SANITIZER_COMMON_CFLAGS /Zc:threadSafeInit-)
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endif()
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endif()
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append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 SANITIZER_COMMON_CFLAGS)
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# Build with optimization, unless we're in debug mode. If we're using MSVC,
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# always respect the optimization flags set by CMAKE_BUILD_TYPE instead.
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if(NOT COMPILER_RT_DEBUG AND NOT MSVC)
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list(APPEND SANITIZER_COMMON_CFLAGS -O3)
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endif()
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# Determine if we should restrict stack frame sizes.
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# Stack frames on PowerPC and Mips and in debug biuld can be much larger than
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# anticipated.
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# FIXME: Fix all sanitizers and add -Wframe-larger-than to
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# SANITIZER_COMMON_FLAGS
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if(COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG AND NOT COMPILER_RT_DEBUG
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AND NOT ${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "powerpc|mips")
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set(SANITIZER_LIMIT_FRAME_SIZE TRUE)
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else()
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set(SANITIZER_LIMIT_FRAME_SIZE FALSE)
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endif()
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# Build sanitizer runtimes with debug info.
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if(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG AND NOT COMPILER_RT_DEBUG)
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list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only)
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elseif(COMPILER_RT_HAS_G_FLAG)
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list(APPEND SANITIZER_COMMON_CFLAGS -g)
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elseif(COMPILER_RT_HAS_Zi_FLAG)
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list(APPEND SANITIZER_COMMON_CFLAGS /Zi)
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endif()
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# Turn off several warnings.
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append_list_if(COMPILER_RT_HAS_WGNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WNON_VIRTUAL_DTOR_FLAG -Wno-non-virtual-dtor SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4146_FLAG /wd4146 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS)
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append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS)
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# Warnings to turn off for all libraries, not just sanitizers.
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append_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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if(APPLE AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
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# Mac OS X prior to 10.9 had problems with exporting symbols from
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# libc++/libc++abi.
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set(SANITIZER_CAN_USE_CXXABI FALSE)
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elseif(MSVC)
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set(SANITIZER_CAN_USE_CXXABI FALSE)
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else()
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set(SANITIZER_CAN_USE_CXXABI TRUE)
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endif()
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pythonize_bool(SANITIZER_CAN_USE_CXXABI)
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add_subdirectory(include)
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set(COMPILER_RT_LIBCXX_PATH ${LLVM_MAIN_SRC_DIR}/projects/libcxx)
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if(EXISTS ${COMPILER_RT_LIBCXX_PATH}/)
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set(COMPILER_RT_HAS_LIBCXX_SOURCES TRUE)
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else()
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set(COMPILER_RT_HAS_LIBCXX_SOURCES FALSE)
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endif()
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set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld)
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if(EXISTS ${COMPILER_RT_LLD_PATH}/)
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set(COMPILER_RT_HAS_LLD_SOURCES TRUE)
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else()
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set(COMPILER_RT_HAS_LLD_SOURCES FALSE)
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endif()
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pythonize_bool(COMPILER_RT_HAS_LLD_SOURCES)
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add_subdirectory(lib)
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if(COMPILER_RT_INCLUDE_TESTS)
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add_subdirectory(unittests)
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add_subdirectory(test)
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endif()
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