| # CMake build for CompilerRT. |
| # |
| # This build assumes that CompilerRT is checked out into the |
| # 'projects/compiler-rt' or 'runtimes/compiler-rt' inside of an LLVM tree. |
| # Standalone build system for CompilerRT is not yet ready. |
| # |
| # An important constraint of the build is that it only produces libraries |
| # based on the ability of the host toolchain to target various platforms. |
| |
| # Check if compiler-rt is built as a standalone project. |
| if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD) |
| project(CompilerRT C CXX ASM) |
| set(COMPILER_RT_STANDALONE_BUILD TRUE) |
| endif() |
| |
| cmake_minimum_required(VERSION 3.4.3) |
| |
| # Add path for custom compiler-rt modules. |
| list(INSERT CMAKE_MODULE_PATH 0 |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake" |
| "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" |
| ) |
| |
| include(base-config-ix) |
| include(CompilerRTUtils) |
| |
| option(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON) |
| mark_as_advanced(COMPILER_RT_BUILD_BUILTINS) |
| option(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON) |
| mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS) |
| option(COMPILER_RT_BUILD_XRAY "Build xray" ON) |
| mark_as_advanced(COMPILER_RT_BUILD_XRAY) |
| |
| if (COMPILER_RT_STANDALONE_BUILD) |
| load_llvm_config() |
| |
| # Find Python interpreter. |
| set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5) |
| include(FindPythonInterp) |
| if(NOT PYTHONINTERP_FOUND) |
| message(FATAL_ERROR " |
| Unable to find Python interpreter required testing. Please install Python |
| or specify the PYTHON_EXECUTABLE CMake variable.") |
| endif() |
| |
| # Define default arguments to lit. |
| set(LIT_ARGS_DEFAULT "-sv") |
| if (MSVC OR XCODE) |
| set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") |
| endif() |
| set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") |
| endif() |
| |
| construct_compiler_rt_default_triple() |
| if ("${COMPILER_RT_DEFAULT_TARGET_ABI}" STREQUAL "androideabi") |
| set(ANDROID 1) |
| endif() |
| |
| set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) |
| set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) |
| |
| # We support running instrumented tests when we're not cross compiling |
| # and target a UNIX-like system or Windows. |
| # We can run tests on Android even when we are cross-compiling. |
| if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR WIN32)) OR ANDROID |
| OR COMPILER_RT_EMULATOR) |
| option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON) |
| else() |
| option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF) |
| endif() |
| |
| option(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF) |
| option(COMPILER_RT_EXTERNALIZE_DEBUGINFO |
| "Generate dSYM files and strip executables and libraries (Darwin Only)" OFF) |
| # COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in. |
| pythonize_bool(COMPILER_RT_DEBUG) |
| |
| include(config-ix) |
| |
| if(APPLE AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9") |
| # Mac OS X prior to 10.9 had problems with exporting symbols from |
| # libc++/libc++abi. |
| set(use_cxxabi_default OFF) |
| elseif(MSVC) |
| set(use_cxxabi_default OFF) |
| else() |
| set(use_cxxabi_default ON) |
| endif() |
| |
| option(SANITIZER_CAN_USE_CXXABI "Sanitizers can use cxxabi" ${use_cxxabi_default}) |
| pythonize_bool(SANITIZER_CAN_USE_CXXABI) |
| |
| #================================ |
| # Setup Compiler Flags |
| #================================ |
| |
| if(MSVC) |
| # Override any existing /W flags with /W4. This is what LLVM does. Failing to |
| # remove other /W[0-4] flags will result in a warning about overriding a |
| # previous flag. |
| if (COMPILER_RT_HAS_W4_FLAG) |
| string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") |
| string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
| append_string_if(COMPILER_RT_HAS_W4_FLAG /W4 CMAKE_C_FLAGS CMAKE_CXX_FLAGS) |
| endif() |
| else() |
| append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS) |
| endif() |
| if(COMPILER_RT_ENABLE_WERROR) |
| append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS) |
| append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS) |
| endif() |
| |
| append_string_if(COMPILER_RT_HAS_STD_CXX11_FLAG -std=c++11 CMAKE_CXX_FLAGS) |
| |
| # Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP. |
| if(NOT COMPILER_RT_HAS_FUNC_SYMBOL) |
| add_definitions(-D__func__=__FUNCTION__) |
| endif() |
| |
| # Provide some common commmandline flags for Sanitizer runtimes. |
| if(NOT WIN32) |
| append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS) |
| endif() |
| append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS) |
| if(NOT COMPILER_RT_DEBUG AND NOT APPLE) |
| append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS) |
| endif() |
| append_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FVISIBILITY_INLINES_HIDDEN_FLAG -fvisibility-inlines-hidden SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS) |
| |
| # The following is a workaround for powerpc64le. This is the only architecture |
| # that requires -fno-function-sections to work properly. If lacking, the ASan |
| # Linux test function-sections-are-bad.cc fails with the following error: |
| # 'undefined symbol: __sanitizer_unaligned_load32'. |
| if(DEFINED TARGET_powerpc64le_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections TARGET_powerpc64le_CFLAGS) |
| endif() |
| |
| if(MSVC) |
| # Replace the /M[DT][d] flags with /MT, and strip any definitions of _DEBUG, |
| # which cause definition mismatches at link time. |
| # FIXME: In fact, sanitizers should support both /MT and /MD, see PR20214. |
| if(COMPILER_RT_HAS_MT_FLAG) |
| foreach(flag_var |
| CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE |
| CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO |
| CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE |
| CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) |
| string(REGEX REPLACE "/M[DT]d" "/MT" ${flag_var} "${${flag_var}}") |
| string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}") |
| string(REGEX REPLACE "/D_DEBUG" "" ${flag_var} "${${flag_var}}") |
| endforeach() |
| endif() |
| append_list_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS) |
| # VS 2015 (version 1900) added support for thread safe static initialization. |
| # However, ASan interceptors run before CRT initialization, which causes the |
| # new thread safe code to crash. Disable this feature for now. |
| if (MSVC_VERSION GREATER 1899 OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") |
| list(APPEND SANITIZER_COMMON_CFLAGS /Zc:threadSafeInit-) |
| endif() |
| endif() |
| |
| append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 SANITIZER_COMMON_CFLAGS) |
| |
| # Build with optimization, unless we're in debug mode. If we're using MSVC, |
| # always respect the optimization flags set by CMAKE_BUILD_TYPE instead. |
| if(NOT COMPILER_RT_DEBUG AND NOT MSVC) |
| list(APPEND SANITIZER_COMMON_CFLAGS -O3) |
| endif() |
| |
| # Determine if we should restrict stack frame sizes. |
| # Stack frames on PowerPC and Mips and in debug biuld can be much larger than |
| # anticipated. |
| # FIXME: Fix all sanitizers and add -Wframe-larger-than to |
| # SANITIZER_COMMON_FLAGS |
| if(COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG AND NOT COMPILER_RT_DEBUG |
| AND NOT ${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "powerpc|mips") |
| set(SANITIZER_LIMIT_FRAME_SIZE TRUE) |
| else() |
| set(SANITIZER_LIMIT_FRAME_SIZE FALSE) |
| endif() |
| |
| # Build sanitizer runtimes with debug info. |
| if(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG AND NOT COMPILER_RT_DEBUG) |
| list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only) |
| elseif(COMPILER_RT_HAS_G_FLAG) |
| list(APPEND SANITIZER_COMMON_CFLAGS -g) |
| elseif(MSVC) |
| # Use /Z7 instead of /Zi for the asan runtime. This avoids the LNK4099 |
| # warning from the MS linker complaining that it can't find the 'vc140.pdb' |
| # file used by our object library compilations. |
| list(APPEND SANITIZER_COMMON_CFLAGS /Z7) |
| llvm_replace_compiler_option(CMAKE_CXX_FLAGS "/Z[i7I]" "/Z7") |
| llvm_replace_compiler_option(CMAKE_CXX_FLAGS_DEBUG "/Z[i7I]" "/Z7") |
| llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Z[i7I]" "/Z7") |
| endif() |
| |
| if(LLVM_ENABLE_MODULES) |
| # Sanitizers cannot be built with -fmodules. The interceptors intentionally |
| # don't include system headers, which is incompatible with modules. |
| list(APPEND SANITIZER_COMMON_CFLAGS -fno-modules) |
| endif() |
| |
| # Turn off several warnings. |
| append_list_if(COMPILER_RT_HAS_WGNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WNON_VIRTUAL_DTOR_FLAG -Wno-non-virtual-dtor SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WD4146_FLAG /wd4146 SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS) |
| append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS) |
| |
| # Warnings to turn off for all libraries, not just sanitizers. |
| append_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS) |
| |
| if (CMAKE_LINKER MATCHES "link.exe$") |
| # Silence MSVC linker warnings caused by empty object files. The |
| # sanitizer libraries intentionally use ifdefs that result in empty |
| # files, rather than skipping these files in the build system. |
| # Ideally, we would pass this flag only for the libraries that need |
| # it, but CMake doesn't seem to have a way to set linker flags for |
| # individual static libraries, so we enable the suppression flag for |
| # the whole compiler-rt project. |
| append("/IGNORE:4221" CMAKE_STATIC_LINKER_FLAGS) |
| endif() |
| |
| add_subdirectory(include) |
| |
| set(COMPILER_RT_LIBCXX_PATH ${LLVM_MAIN_SRC_DIR}/projects/libcxx) |
| if(EXISTS ${COMPILER_RT_LIBCXX_PATH}/) |
| set(COMPILER_RT_HAS_LIBCXX_SOURCES TRUE) |
| else() |
| set(COMPILER_RT_HAS_LIBCXX_SOURCES FALSE) |
| endif() |
| |
| set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld) |
| if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD) |
| set(COMPILER_RT_HAS_LLD TRUE) |
| else() |
| set(COMPILER_RT_HAS_LLD FALSE) |
| endif() |
| pythonize_bool(COMPILER_RT_HAS_LLD) |
| |
| add_subdirectory(lib) |
| |
| if(COMPILER_RT_INCLUDE_TESTS) |
| add_subdirectory(unittests) |
| add_subdirectory(test) |
| endif() |