13cab2bb3Spatrick# CMake build for CompilerRT. 23cab2bb3Spatrick# 33cab2bb3Spatrick# An important constraint of the build is that it only produces libraries 43cab2bb3Spatrick# based on the ability of the host toolchain to target various platforms. 53cab2bb3Spatrick 6d89ec533Spatrickcmake_minimum_required(VERSION 3.13.4) 73cab2bb3Spatrick 83cab2bb3Spatrick# Check if compiler-rt is built as a standalone project. 93cab2bb3Spatrickif (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD) 103cab2bb3Spatrick project(CompilerRT C CXX ASM) 113cab2bb3Spatrick set(COMPILER_RT_STANDALONE_BUILD TRUE) 123cab2bb3Spatrick set_property(GLOBAL PROPERTY USE_FOLDERS ON) 13*810390e3Srobert if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0") 14*810390e3Srobert message(WARNING 15*810390e3Srobert "Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the " 16*810390e3Srobert "minimum version of CMake required to build LLVM will become 3.20.0, and " 17*810390e3Srobert "using an older CMake will become an error. Please upgrade your CMake to " 18*810390e3Srobert "at least 3.20.0 now to avoid issues in the future!") 193cab2bb3Spatrick endif() 20*810390e3Srobertendif() 21*810390e3Srobert 22*810390e3Srobertset(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") 233cab2bb3Spatrick 243cab2bb3Spatrick# Add path for custom compiler-rt modules. 253cab2bb3Spatricklist(INSERT CMAKE_MODULE_PATH 0 263cab2bb3Spatrick "${CMAKE_CURRENT_SOURCE_DIR}/cmake" 273cab2bb3Spatrick "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" 28*810390e3Srobert "${LLVM_COMMON_CMAKE_UTILS}" 29*810390e3Srobert "${LLVM_COMMON_CMAKE_UTILS}/Modules" 303cab2bb3Spatrick ) 313cab2bb3Spatrick 323cab2bb3Spatrickif(CMAKE_CONFIGURATION_TYPES) 333cab2bb3Spatrick set(CMAKE_CFG_RESOLVED_INTDIR "${CMAKE_CFG_INTDIR}/") 343cab2bb3Spatrickelse() 353cab2bb3Spatrick set(CMAKE_CFG_RESOLVED_INTDIR "") 363cab2bb3Spatrickendif() 373cab2bb3Spatrick 38*810390e3Srobertinclude(SetPlatformToolchainTools) 393cab2bb3Spatrickinclude(base-config-ix) 403cab2bb3Spatrickinclude(CompilerRTUtils) 41*810390e3Srobertinclude(CMakeDependentOption) 423cab2bb3Spatrick 433cab2bb3Spatrickoption(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON) 443cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_BUILTINS) 45*810390e3Srobertoption(COMPILER_RT_DISABLE_AARCH64_FMV "Disable AArch64 Function Multi Versioning support" OFF) 46*810390e3Srobertmark_as_advanced(COMPILER_RT_DISABLE_AARCH64_FMV) 473cab2bb3Spatrickoption(COMPILER_RT_BUILD_CRT "Build crtbegin.o/crtend.o" ON) 483cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_CRT) 493cab2bb3Spatrickoption(COMPILER_RT_CRT_USE_EH_FRAME_REGISTRY "Use eh_frame in crtbegin.o/crtend.o" ON) 503cab2bb3Spatrickmark_as_advanced(COMPILER_RT_CRT_USE_EH_FRAME_REGISTRY) 513cab2bb3Spatrickoption(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON) 523cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_SANITIZERS) 533cab2bb3Spatrickoption(COMPILER_RT_BUILD_XRAY "Build xray" ON) 543cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_XRAY) 553cab2bb3Spatrickoption(COMPILER_RT_BUILD_LIBFUZZER "Build libFuzzer" ON) 563cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_LIBFUZZER) 573cab2bb3Spatrickoption(COMPILER_RT_BUILD_PROFILE "Build profile runtime" ON) 583cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_PROFILE) 59d89ec533Spatrickoption(COMPILER_RT_BUILD_MEMPROF "Build memory profiling runtime" ON) 60d89ec533Spatrickmark_as_advanced(COMPILER_RT_BUILD_MEMPROF) 613cab2bb3Spatrickoption(COMPILER_RT_BUILD_XRAY_NO_PREINIT "Build xray with no preinit patching" OFF) 623cab2bb3Spatrickmark_as_advanced(COMPILER_RT_BUILD_XRAY_NO_PREINIT) 63d89ec533Spatrickoption(COMPILER_RT_BUILD_ORC "Build ORC runtime" ON) 64d89ec533Spatrickmark_as_advanced(COMPILER_RT_BUILD_ORC) 65*810390e3Srobertoption(COMPILER_RT_BUILD_GWP_ASAN "Build GWP-ASan, and link it into SCUDO" ON) 66*810390e3Srobertmark_as_advanced(COMPILER_RT_BUILD_GWP_ASAN) 67*810390e3Srobertoption(COMPILER_RT_ENABLE_CET "Build Compiler RT with CET enabled" OFF) 683cab2bb3Spatrick 69*810390e3Srobertoption(COMPILER_RT_SCUDO_STANDALONE_SYSROOT_PATH "Set custom sysroot for building SCUDO standalone" OFF) 70*810390e3Srobertmark_as_advanced(COMPILER_RT_SCUDO_STANDALONE_SYSROOT_PATH) 71*810390e3Srobertoption(COMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED "Build SCUDO standalone for shared libraries" ON) 72*810390e3Srobertmark_as_advanced(COMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED) 73*810390e3Srobertoption(COMPILER_RT_BUILD_SCUDO_STANDALONE_WITH_LLVM_LIBC "Build SCUDO standalone with LLVM's libc headers" OFF) 74*810390e3Srobertmark_as_advanced(COMPILER_RT_BUILD_SCUDO_STANDALONE_WITH_LLVM_LIBC) 753cab2bb3Spatrick 76d89ec533Spatrickif(FUCHSIA) 77d89ec533Spatrick set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT OFF) 78d89ec533Spatrickelse() 79d89ec533Spatrick set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT ON) 80d89ec533Spatrickendif() 81d89ec533Spatrickset(COMPILER_RT_HWASAN_WITH_INTERCEPTORS ${COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT} CACHE BOOL "Enable libc interceptors in HWASan (testing mode)") 823cab2bb3Spatrick 833cab2bb3Spatrickset(COMPILER_RT_BAREMETAL_BUILD OFF CACHE BOOL 843cab2bb3Spatrick "Build for a bare-metal target.") 853cab2bb3Spatrick 863cab2bb3Spatrickif (COMPILER_RT_STANDALONE_BUILD) 87*810390e3Srobert set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") 88*810390e3Srobert set(CMAKE_CXX_STANDARD_REQUIRED YES) 89*810390e3Srobert set(CMAKE_CXX_EXTENSIONS NO) 90*810390e3Srobert 91*810390e3Srobert if (NOT LLVM_RUNTIMES_BUILD) 923cab2bb3Spatrick load_llvm_config() 93*810390e3Srobert endif() 943cab2bb3Spatrick if (TARGET intrinsics_gen) 953cab2bb3Spatrick # Loading the llvm config causes this target to be imported so place it 963cab2bb3Spatrick # under the appropriate folder in an IDE. 973cab2bb3Spatrick set_target_properties(intrinsics_gen PROPERTIES FOLDER "Compiler-RT Misc") 983cab2bb3Spatrick endif() 993cab2bb3Spatrick 1001f9cb04fSpatrick find_package(Python3 COMPONENTS Interpreter) 1011f9cb04fSpatrick if(NOT Python3_Interpreter_FOUND) 1021f9cb04fSpatrick message(WARNING "Python3 not found, using python2 as a fallback") 1031f9cb04fSpatrick find_package(Python2 COMPONENTS Interpreter REQUIRED) 1041f9cb04fSpatrick if(Python2_VERSION VERSION_LESS 2.7) 1051f9cb04fSpatrick message(SEND_ERROR "Python 2.7 or newer is required") 1061f9cb04fSpatrick endif() 1071f9cb04fSpatrick 1081f9cb04fSpatrick # Treat python2 as python3 1091f9cb04fSpatrick add_executable(Python3::Interpreter IMPORTED) 1101f9cb04fSpatrick set_target_properties(Python3::Interpreter PROPERTIES 1111f9cb04fSpatrick IMPORTED_LOCATION ${Python2_EXECUTABLE}) 1121f9cb04fSpatrick set(Python3_EXECUTABLE ${Python2_EXECUTABLE}) 1131f9cb04fSpatrick endif() 1141f9cb04fSpatrick 1153cab2bb3Spatrick # Ensure that fat libraries are built correctly on Darwin 116d89ec533Spatrick if(APPLE) 1173cab2bb3Spatrick include(UseLibtool) 1183cab2bb3Spatrick endif() 1193cab2bb3Spatrick 1203cab2bb3Spatrick # Define default arguments to lit. 1213cab2bb3Spatrick set(LIT_ARGS_DEFAULT "-sv") 1223cab2bb3Spatrick if (MSVC OR XCODE) 1233cab2bb3Spatrick set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 1243cab2bb3Spatrick endif() 1253cab2bb3Spatrick set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 1263cab2bb3Spatrick set(LLVM_LIT_OUTPUT_DIR "${COMPILER_RT_EXEC_OUTPUT_DIR}") 1273cab2bb3Spatrickendif() 1283cab2bb3Spatrick 1293cab2bb3Spatrickconstruct_compiler_rt_default_triple() 1303cab2bb3Spatrickif ("${COMPILER_RT_DEFAULT_TARGET_TRIPLE}" MATCHES ".*hf$") 1313cab2bb3Spatrick if (${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "^arm") 1323cab2bb3Spatrick set(COMPILER_RT_DEFAULT_TARGET_ARCH "armhf") 133d89ec533Spatrick CHECK_SYMBOL_EXISTS (__thumb__ "" COMPILER_RT_ARM_THUMB) 1343cab2bb3Spatrick endif() 1353cab2bb3Spatrickendif() 136*810390e3Srobertif (${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "^mips") 137*810390e3Srobert CHECK_SYMBOL_EXISTS (_MIPS_ARCH_MIPS32R6 "" COMPILER_RT_MIPS32R6) 138*810390e3Srobert CHECK_SYMBOL_EXISTS (_MIPS_ARCH_MIPS64R6 "" COMPILER_RT_MIPS64R6) 139*810390e3Srobert CHECK_SYMBOL_EXISTS (__mips64 "" COMPILER_RT_MIPS_64) 140*810390e3Srobert CHECK_SYMBOL_EXISTS (__MIPSEL__ "" COMPILER_RT_MIPS_EL) 141*810390e3Srobert if ("${COMPILER_RT_MIPS_64}") 142*810390e3Srobert set(COMPILER_RT_DEFAULT_TARGET_ARCH "mips64") 143*810390e3Srobert else() 144*810390e3Srobert set(COMPILER_RT_DEFAULT_TARGET_ARCH "mips") 145*810390e3Srobert endif() 146*810390e3Srobert if ("${COMPILER_RT_MIPS_EL}") 147*810390e3Srobert set(COMPILER_RT_DEFAULT_TARGET_ARCH "${COMPILER_RT_DEFAULT_TARGET_ARCH}el") 148*810390e3Srobert endif() 149*810390e3Srobertendif() 1503cab2bb3Spatrickif ("${COMPILER_RT_DEFAULT_TARGET_TRIPLE}" MATCHES ".*android.*") 1513cab2bb3Spatrick set(ANDROID 1) 152d89ec533Spatrick string(REGEX MATCH "-target(=| +)[^ ]+android[a-z]*([0-9]+)" ANDROID_API_LEVEL "${CMAKE_C_FLAGS}") 153d89ec533Spatrick set(ANDROID_API_LEVEL ${CMAKE_MATCH_2}) 1543cab2bb3Spatrickendif() 1553cab2bb3Spatrickpythonize_bool(ANDROID) 1563cab2bb3Spatrick 1573cab2bb3Spatrickset(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 1583cab2bb3Spatrickset(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 1593cab2bb3Spatrick 1603cab2bb3Spatrickpythonize_bool(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR) 1613cab2bb3Spatrick 162*810390e3Srobert# We support running instrumented tests when we're not cross-compiling 1633cab2bb3Spatrick# and target a UNIX-like system or Windows. 1643cab2bb3Spatrick# We can run tests on Android even when we are cross-compiling. 165*810390e3Srobertif(("${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "${CMAKE_SYSTEM_NAME}" AND (UNIX OR WIN32)) 166*810390e3Srobert OR ANDROID OR COMPILER_RT_EMULATOR) 1673cab2bb3Spatrick option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON) 1683cab2bb3Spatrickelse() 1693cab2bb3Spatrick option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF) 1703cab2bb3Spatrickendif() 1713cab2bb3Spatrick 1723cab2bb3Spatrickoption(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF) 1733cab2bb3Spatrickoption(COMPILER_RT_EXTERNALIZE_DEBUGINFO 1743cab2bb3Spatrick "Generate dSYM files and strip executables and libraries (Darwin Only)" OFF) 1753cab2bb3Spatrick# COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in. 1763cab2bb3Spatrickpythonize_bool(COMPILER_RT_DEBUG) 1773cab2bb3Spatrick 1783cab2bb3Spatrickoption(COMPILER_RT_INTERCEPT_LIBDISPATCH 1793cab2bb3Spatrick "Support interception of libdispatch (GCD). Requires '-fblocks'" OFF) 1803cab2bb3Spatrickoption(COMPILER_RT_LIBDISPATCH_INSTALL_PATH 1813cab2bb3Spatrick "Specify if libdispatch is installed in a custom location" "") 1823cab2bb3Spatrickif (COMPILER_RT_INTERCEPT_LIBDISPATCH AND NOT APPLE) 1833cab2bb3Spatrick set(COMPILER_RT_LIBDISPATCH_CFLAGS -fblocks) 1843cab2bb3Spatrick set(COMPILER_RT_TEST_LIBDISPATCH_CFLAGS) 1853cab2bb3Spatrick if (COMPILER_RT_LIBDISPATCH_INSTALL_PATH) 1863cab2bb3Spatrick list(APPEND COMPILER_RT_TEST_LIBDISPATCH_CFLAGS 1873cab2bb3Spatrick -I${COMPILER_RT_LIBDISPATCH_INSTALL_PATH}/include 1883cab2bb3Spatrick -L${COMPILER_RT_LIBDISPATCH_INSTALL_PATH}/lib 1893cab2bb3Spatrick -Wl,-rpath=${COMPILER_RT_LIBDISPATCH_INSTALL_PATH}/lib) 1903cab2bb3Spatrick endif() 1913cab2bb3Spatrick list(APPEND COMPILER_RT_TEST_LIBDISPATCH_CFLAGS -lBlocksRuntime -ldispatch) 1923cab2bb3Spatrickendif() 1933cab2bb3Spatrickif (APPLE) # Always enable on Apple platforms. 1943cab2bb3Spatrick set(COMPILER_RT_INTERCEPT_LIBDISPATCH ON) 1953cab2bb3Spatrickendif() 1963cab2bb3Spatrickpythonize_bool(COMPILER_RT_INTERCEPT_LIBDISPATCH) 1973cab2bb3Spatrick 1983cab2bb3Spatrickif(APPLE AND SANITIZER_MIN_OSX_VERSION AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9") 1993cab2bb3Spatrick # Mac OS X prior to 10.9 had problems with exporting symbols from 2003cab2bb3Spatrick # libc++/libc++abi. 2013cab2bb3Spatrick set(cxxabi_supported OFF) 2023cab2bb3Spatrickelse() 2033cab2bb3Spatrick set(cxxabi_supported ON) 2043cab2bb3Spatrickendif() 2053cab2bb3Spatrick 2063cab2bb3Spatrickoption(SANITIZER_ALLOW_CXXABI "Allow use of C++ ABI details in ubsan" ON) 2073cab2bb3Spatrick 208d89ec533Spatrickset(SANITIZER_CAN_USE_CXXABI OFF) 2093cab2bb3Spatrickif (cxxabi_supported AND SANITIZER_ALLOW_CXXABI) 2103cab2bb3Spatrick set(SANITIZER_CAN_USE_CXXABI ON) 2113cab2bb3Spatrickendif() 2123cab2bb3Spatrickpythonize_bool(SANITIZER_CAN_USE_CXXABI) 2133cab2bb3Spatrick 2143cab2bb3Spatrickmacro(handle_default_cxx_lib var) 215d89ec533Spatrick # Specifying -stdlib= in CMAKE_CXX_FLAGS overrides the defaults. 216d89ec533Spatrick if (CMAKE_CXX_FLAGS MATCHES "-stdlib=([a-zA-Z+]*)") 217d89ec533Spatrick set(${var}_LIBNAME "${CMAKE_MATCH_1}") 218d89ec533Spatrick set(${var}_SYSTEM 1) 219d89ec533Spatrick elseif (${var} STREQUAL "default") 2203cab2bb3Spatrick if (APPLE OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD") 2213cab2bb3Spatrick set(${var}_LIBNAME "libc++") 2223cab2bb3Spatrick set(${var}_SYSTEM 1) 2233cab2bb3Spatrick elseif (FUCHSIA) 2243cab2bb3Spatrick set(${var}_LIBNAME "libc++") 2253cab2bb3Spatrick set(${var}_INTREE 1) 2263cab2bb3Spatrick else() 2273cab2bb3Spatrick set(${var}_LIBNAME "libstdc++") 2283cab2bb3Spatrick set(${var}_SYSTEM 1) 2293cab2bb3Spatrick endif() 2303cab2bb3Spatrick else() 2313cab2bb3Spatrick set(${var}_LIBNAME "${${var}}") 2323cab2bb3Spatrick set(${var}_SYSTEM 1) 2333cab2bb3Spatrick endif() 2343cab2bb3Spatrickendmacro() 2353cab2bb3Spatrick 2363cab2bb3Spatrick# This is either directly the C++ ABI library or the full C++ library 2373cab2bb3Spatrick# which pulls in the ABI transitively. 238*810390e3Srobert# TODO: Mark this as internal flag, most users should use COMPILER_RT_CXX_LIBRARY. 2393cab2bb3Spatrickset(SANITIZER_CXX_ABI "default" CACHE STRING 2403cab2bb3Spatrick "Specify C++ ABI library to use.") 2413cab2bb3Spatrickset(CXXABIS none default libstdc++ libc++ libcxxabi) 2423cab2bb3Spatrickset_property(CACHE SANITIZER_CXX_ABI PROPERTY STRINGS ;${CXXABIS}) 2433cab2bb3Spatrickhandle_default_cxx_lib(SANITIZER_CXX_ABI) 2443cab2bb3Spatrick 2453cab2bb3Spatrick# This needs to be a full C++ library for linking gtest and unit tests. 246*810390e3Srobert# TODO: Mark this as internal flag, most users should use COMPILER_RT_CXX_LIBRARY. 2473cab2bb3Spatrickset(SANITIZER_TEST_CXX "default" CACHE STRING 2483cab2bb3Spatrick "Specify C++ library to use for tests.") 2493cab2bb3Spatrickset(CXXLIBS none default libstdc++ libc++) 2503cab2bb3Spatrickset_property(CACHE SANITIZER_TEST_CXX PROPERTY STRINGS ;${CXXLIBS}) 2513cab2bb3Spatrickhandle_default_cxx_lib(SANITIZER_TEST_CXX) 2523cab2bb3Spatrick 253*810390e3Srobertoption(COMPILER_RT_USE_LLVM_UNWINDER "Use the LLVM unwinder." OFF) 254*810390e3Srobertcmake_dependent_option(COMPILER_RT_ENABLE_STATIC_UNWINDER 255*810390e3Srobert "Statically link the LLVM unwinder." OFF 256*810390e3Srobert "COMPILER_RT_USE_LLVM_UNWINDER" OFF) 257*810390e3Srobert 2583cab2bb3Spatrickset(DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER OFF) 2593cab2bb3Spatrickif (FUCHSIA) 2603cab2bb3Spatrick set(DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER ON) 2613cab2bb3Spatrickelseif (DEFINED LIBUNWIND_ENABLE_SHARED AND NOT LIBUNWIND_ENABLE_SHARED) 2623cab2bb3Spatrick set(DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER ON) 2633cab2bb3Spatrickendif() 2643cab2bb3Spatrick 2653cab2bb3Spatrickoption(SANITIZER_USE_STATIC_LLVM_UNWINDER 2663cab2bb3Spatrick "Use static LLVM unwinder." ${DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER}) 267*810390e3Srobertpythonize_bool(SANITIZER_USE_STATIC_LLVM_UNWINDER) 2683cab2bb3Spatrick 2693cab2bb3Spatrickset(DEFAULT_SANITIZER_USE_STATIC_CXX_ABI OFF) 2703cab2bb3Spatrickif (DEFINED LIBCXXABI_ENABLE_SHARED AND NOT LIBCXXABI_ENABLE_SHARED) 2713cab2bb3Spatrick set(DEFAULT_SANITIZER_USE_STATIC_CXX_ABI ON) 2723cab2bb3Spatrickendif() 2733cab2bb3Spatrick 2743cab2bb3Spatrickoption(SANITIZER_USE_STATIC_CXX_ABI 2753cab2bb3Spatrick "Use static libc++abi." ${DEFAULT_SANITIZER_USE_STATIC_CXX_ABI}) 276*810390e3Srobertpythonize_bool(SANITIZER_USE_STATIC_CXX_ABI) 277*810390e3Srobert 278*810390e3Srobertset(DEFAULT_SANITIZER_USE_STATIC_TEST_CXX OFF) 279*810390e3Srobertif (DEFINED LIBCXX_ENABLE_SHARED AND NOT LIBCXX_ENABLE_SHARED) 280*810390e3Srobert set(DEFAULT_SANITIZER_USE_STATIC_TEST_CXX ON) 281*810390e3Srobertendif() 282*810390e3Srobert 283*810390e3Srobertoption(SANITIZER_USE_STATIC_TEST_CXX 284*810390e3Srobert "Use static libc++ for tests." ${DEFAULT_SANITIZER_USE_STATIC_TEST_CXX}) 285*810390e3Srobertpythonize_bool(SANITIZER_USE_STATIC_TEST_CXX) 286*810390e3Srobert 287*810390e3Srobertset(COMPILER_RT_SUPPORTED_CXX_LIBRARIES none default libcxx) 288*810390e3Srobertset(COMPILER_RT_CXX_LIBRARY "default" CACHE STRING "Specify C++ library to use. Supported values are ${COMPILER_RT_SUPPORTED_CXX_LIBRARIES}.") 289*810390e3Srobertif (NOT "${COMPILER_RT_CXX_LIBRARY}" IN_LIST COMPILER_RT_SUPPORTED_CXX_LIBRARIES) 290*810390e3Srobert message(FATAL_ERROR "Unsupported C++ library: '${COMPILER_RT_CXX_LIBRARY}'. Supported values are ${COMPILER_RT_SUPPORTED_CXX_LIBRARIES}.") 291*810390e3Srobertendif() 292*810390e3Srobertcmake_dependent_option(COMPILER_RT_STATIC_CXX_LIBRARY 293*810390e3Srobert "Statically link the C++ library." OFF 294*810390e3Srobert "COMPILER_RT_CXX_LIBRARY" OFF) 2953cab2bb3Spatrick 2963cab2bb3Spatrickset(DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY OFF) 2973cab2bb3Spatrickif (FUCHSIA) 2983cab2bb3Spatrick set(DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY ON) 2993cab2bb3Spatrickendif() 3003cab2bb3Spatrick 3013cab2bb3Spatrickoption(COMPILER_RT_USE_BUILTINS_LIBRARY 3023cab2bb3Spatrick "Use compiler-rt builtins instead of libgcc" ${DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY}) 3033cab2bb3Spatrick 3043cab2bb3Spatrickinclude(config-ix) 3053cab2bb3Spatrick 3063cab2bb3Spatrick#================================ 3073cab2bb3Spatrick# Setup Compiler Flags 3083cab2bb3Spatrick#================================ 3093cab2bb3Spatrick 310*810390e3Srobert# fcf-protection is a gcc/clang option for CET support on Linux platforms. 311*810390e3Srobert# We need to handle MSVC CET option on Windows platforms. 312*810390e3Srobertif (NOT MSVC) 313*810390e3Srobert if (COMPILER_RT_ENABLE_CET AND NOT COMPILER_RT_HAS_FCF_PROTECTION_FLAG) 314*810390e3Srobert message(FATAL_ERROR "Compiler used to build compiler-rt doesn't support CET!") 315*810390e3Srobert endif() 316*810390e3Srobertendif() 317*810390e3Srobert 3183cab2bb3Spatrickif(MSVC) 3193cab2bb3Spatrick # Override any existing /W flags with /W4. This is what LLVM does. Failing to 3203cab2bb3Spatrick # remove other /W[0-4] flags will result in a warning about overriding a 3213cab2bb3Spatrick # previous flag. 3223cab2bb3Spatrick if (COMPILER_RT_HAS_W4_FLAG) 3233cab2bb3Spatrick string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") 3243cab2bb3Spatrick string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 3253cab2bb3Spatrick append_string_if(COMPILER_RT_HAS_W4_FLAG /W4 CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 3263cab2bb3Spatrick endif() 3273cab2bb3Spatrickelse() 3283cab2bb3Spatrick append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 3293cab2bb3Spatrickendif() 3303cab2bb3Spatrickif(COMPILER_RT_ENABLE_WERROR) 3313cab2bb3Spatrick append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 3323cab2bb3Spatrick append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 3333cab2bb3Spatrickendif() 3343cab2bb3Spatrick 3353cab2bb3Spatrick# Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP. 3363cab2bb3Spatrickif(NOT COMPILER_RT_HAS_FUNC_SYMBOL) 3373cab2bb3Spatrick add_definitions(-D__func__=__FUNCTION__) 3383cab2bb3Spatrickendif() 3393cab2bb3Spatrick 340d89ec533Spatrick# Provide some common commandline flags for Sanitizer runtimes. 341d89ec533Spatrickif("${ANDROID_API_LEVEL}" GREATER_EQUAL 29) 342d89ec533Spatrick list(APPEND SANITIZER_COMMON_CFLAGS -fno-emulated-tls) 343d89ec533Spatrick string(APPEND COMPILER_RT_TEST_COMPILER_CFLAGS " -fno-emulated-tls") 344d89ec533Spatrickendif() 3453cab2bb3Spatrickif(NOT WIN32) 3463cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS) 3473cab2bb3Spatrickendif() 3483cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS) 3493cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS) 3503cab2bb3Spatrickif(NOT COMPILER_RT_DEBUG AND NOT APPLE) 3513cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS) 3523cab2bb3Spatrickendif() 3533cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS) 3543cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS) 3553cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS) 3563cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS) 3573cab2bb3Spatrickif(NOT COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG) 3583cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_FVISIBILITY_INLINES_HIDDEN_FLAG -fvisibility-inlines-hidden SANITIZER_COMMON_CFLAGS) 3593cab2bb3Spatrickendif() 3603cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS) 3613cab2bb3Spatrick 3621f9cb04fSpatrick# By default do not instrument or use profdata for compiler-rt. 3631f9cb04fSpatrickif(NOT COMPILER_RT_ENABLE_PGO) 3641f9cb04fSpatrick if(LLVM_PROFDATA_FILE AND COMPILER_RT_HAS_FNO_PROFILE_INSTR_USE_FLAG) 3651f9cb04fSpatrick list(APPEND SANITIZER_COMMON_CFLAGS "-fno-profile-instr-use") 3661f9cb04fSpatrick endif() 3671f9cb04fSpatrick if(LLVM_BUILD_INSTRUMENTED MATCHES IR AND COMPILER_RT_HAS_FNO_PROFILE_GENERATE_FLAG) 3681f9cb04fSpatrick list(APPEND SANITIZER_COMMON_CFLAGS "-fno-profile-generate") 369*810390e3Srobert elseif((LLVM_BUILD_INSTRUMENTED OR LLVM_BUILD_INSTRUMENTED_COVERAGE) AND COMPILER_RT_HAS_FNO_PROFILE_INSTR_GENERATE_FLAG) 3701f9cb04fSpatrick list(APPEND SANITIZER_COMMON_CFLAGS "-fno-profile-instr-generate") 371*810390e3Srobert if(LLVM_BUILD_INSTRUMENTED_COVERAGE AND COMPILER_RT_HAS_FNO_COVERAGE_MAPPING_FLAG) 372*810390e3Srobert list(APPEND SANITIZER_COMMON_CFLAGS "-fno-coverage-mapping") 373*810390e3Srobert endif() 3741f9cb04fSpatrick endif() 3751f9cb04fSpatrickendif() 3761f9cb04fSpatrick 3773cab2bb3Spatrick# The following is a workaround for powerpc64le. This is the only architecture 3783cab2bb3Spatrick# that requires -fno-function-sections to work properly. If lacking, the ASan 3793cab2bb3Spatrick# Linux test function-sections-are-bad.cpp fails with the following error: 3803cab2bb3Spatrick# 'undefined symbol: __sanitizer_unaligned_load32'. 3813cab2bb3Spatrickif(DEFINED TARGET_powerpc64le_CFLAGS) 3821f9cb04fSpatrick if(CMAKE_CXX_COMPILER_ID MATCHES "XL") 3831f9cb04fSpatrick append("-qnofuncsect" TARGET_powerpc64le_CFLAGS) 3841f9cb04fSpatrick else() 3853cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections TARGET_powerpc64le_CFLAGS) 3863cab2bb3Spatrick endif() 3871f9cb04fSpatrickendif() 3883cab2bb3Spatrick 3893cab2bb3Spatrick# The following is a workaround for s390x. This avoids creation of "partial 3903cab2bb3Spatrick# inline" function fragments when building the asan libraries with certain 3913cab2bb3Spatrick# GCC versions. The presence of those fragments, in particular for the 3923cab2bb3Spatrick# interceptors, changes backtraces seen in asan error cases, which causes 3933cab2bb3Spatrick# testsuite failures. 3943cab2bb3Spatrickif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x") 3953cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_FNO_PARTIAL_INLINING_FLAG -fno-partial-inlining SANITIZER_COMMON_CFLAGS) 3963cab2bb3Spatrickendif() 3973cab2bb3Spatrick 3983cab2bb3Spatrickif(MSVC) 3993cab2bb3Spatrick # Replace the /M[DT][d] flags with /MT, and strip any definitions of _DEBUG, 4003cab2bb3Spatrick # which cause definition mismatches at link time. 4013cab2bb3Spatrick # FIXME: In fact, sanitizers should support both /MT and /MD, see PR20214. 4023cab2bb3Spatrick if(COMPILER_RT_HAS_MT_FLAG) 4033cab2bb3Spatrick foreach(flag_var 4043cab2bb3Spatrick CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE 4053cab2bb3Spatrick CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO 4063cab2bb3Spatrick CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE 4073cab2bb3Spatrick CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) 4083cab2bb3Spatrick string(REGEX REPLACE "/M[DT]d" "/MT" ${flag_var} "${${flag_var}}") 4093cab2bb3Spatrick string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}") 4103cab2bb3Spatrick string(REGEX REPLACE "/D_DEBUG" "" ${flag_var} "${${flag_var}}") 4113cab2bb3Spatrick endforeach() 4123cab2bb3Spatrick endif() 4133cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS) 4143cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS) 4153cab2bb3Spatrick 4163cab2bb3Spatrick # Disable thread safe initialization for static locals. ASan shouldn't need 4173cab2bb3Spatrick # it. Thread safe initialization assumes that the CRT has already been 4183cab2bb3Spatrick # initialized, but ASan initializes before the CRT. 4193cab2bb3Spatrick list(APPEND SANITIZER_COMMON_CFLAGS /Zc:threadSafeInit-) 4203cab2bb3Spatrickendif() 4213cab2bb3Spatrick 4223cab2bb3Spatrickappend_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 SANITIZER_COMMON_CFLAGS) 4233cab2bb3Spatrick 424*810390e3Srobertappend_list_if(COMPILER_RT_HAS_WTHREAD_SAFETY_FLAG -Wthread-safety THREAD_SAFETY_FLAGS) 425*810390e3Srobertappend_list_if(COMPILER_RT_HAS_WTHREAD_SAFETY_REFERENCE_FLAG -Wthread-safety-reference THREAD_SAFETY_FLAGS) 426*810390e3Srobertappend_list_if(COMPILER_RT_HAS_WTHREAD_SAFETY_BETA_FLAG -Wthread-safety-beta THREAD_SAFETY_FLAGS) 427d89ec533Spatricklist(APPEND SANITIZER_COMMON_CFLAGS ${THREAD_SAFETY_FLAGS}) 428d89ec533Spatrickstring(REPLACE ";" " " thread_safety_flags_space_sep "${THREAD_SAFETY_FLAGS}") 429d89ec533Spatrickstring(APPEND COMPILER_RT_TEST_COMPILER_CFLAGS " ${thread_safety_flags_space_sep}") 430d89ec533Spatrick 4313cab2bb3Spatrick# If we're using MSVC, 4323cab2bb3Spatrick# always respect the optimization flags set by CMAKE_BUILD_TYPE instead. 4333cab2bb3Spatrickif (NOT MSVC) 4343cab2bb3Spatrick 4353cab2bb3Spatrick # Build with optimization, unless we're in debug mode. 4363cab2bb3Spatrick if(COMPILER_RT_DEBUG) 437*810390e3Srobert list(APPEND SANITIZER_COMMON_CFLAGS -O1) 4383cab2bb3Spatrick else() 4393cab2bb3Spatrick list(APPEND SANITIZER_COMMON_CFLAGS -O3) 4403cab2bb3Spatrick endif() 4413cab2bb3Spatrickendif() 4423cab2bb3Spatrick 4433cab2bb3Spatrick# Determine if we should restrict stack frame sizes. 4443cab2bb3Spatrick# Stack frames on PowerPC, Mips, SystemZ and in debug build can be much larger than 4453cab2bb3Spatrick# anticipated. 4463cab2bb3Spatrick# FIXME: Fix all sanitizers and add -Wframe-larger-than to 4473cab2bb3Spatrick# SANITIZER_COMMON_FLAGS 4483cab2bb3Spatrickif(COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG AND NOT COMPILER_RT_DEBUG 4493cab2bb3Spatrick AND NOT ${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "powerpc|mips|s390x") 4503cab2bb3Spatrick set(SANITIZER_LIMIT_FRAME_SIZE TRUE) 4513cab2bb3Spatrickelse() 4523cab2bb3Spatrick set(SANITIZER_LIMIT_FRAME_SIZE FALSE) 4533cab2bb3Spatrickendif() 4543cab2bb3Spatrick 4553cab2bb3Spatrickif(FUCHSIA OR UNIX) 4563cab2bb3Spatrick set(SANITIZER_USE_SYMBOLS TRUE) 4573cab2bb3Spatrickelse() 4583cab2bb3Spatrick set(SANITIZER_USE_SYMBOLS FALSE) 4593cab2bb3Spatrickendif() 4603cab2bb3Spatrick 4613cab2bb3Spatrick# Build sanitizer runtimes with debug info. 4623cab2bb3Spatrickif(MSVC) 4633cab2bb3Spatrick # Use /Z7 instead of /Zi for the asan runtime. This avoids the LNK4099 4643cab2bb3Spatrick # warning from the MS linker complaining that it can't find the 'vc140.pdb' 4653cab2bb3Spatrick # file used by our object library compilations. 4663cab2bb3Spatrick list(APPEND SANITIZER_COMMON_CFLAGS /Z7) 4673cab2bb3Spatrick foreach(var_to_update 4683cab2bb3Spatrick CMAKE_CXX_FLAGS 4693cab2bb3Spatrick CMAKE_CXX_FLAGS_DEBUG 4703cab2bb3Spatrick CMAKE_CXX_FLAGS_RELWITHDEBINFO) 4713cab2bb3Spatrick string(REGEX REPLACE "(^| )/Z[i7I]($| )" " /Z7 " 4723cab2bb3Spatrick "${var_to_update}" "${${var_to_update}}") 4733cab2bb3Spatrick endforeach() 474*810390e3Srobertelseif(APPLE) 475*810390e3Srobert # On Apple platforms use full debug info (i.e. not `-gline-tables-only`) 476*810390e3Srobert # for all build types so that the runtime can be debugged. 477*810390e3Srobert if(NOT COMPILER_RT_HAS_G_FLAG) 478*810390e3Srobert message(FATAL_ERROR "-g is not supported by host compiler") 479*810390e3Srobert endif() 480*810390e3Srobert list(APPEND SANITIZER_COMMON_CFLAGS -g) 4813cab2bb3Spatrickelseif(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG AND NOT COMPILER_RT_DEBUG) 4823cab2bb3Spatrick list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only) 4833cab2bb3Spatrickelseif(COMPILER_RT_HAS_G_FLAG) 4843cab2bb3Spatrick list(APPEND SANITIZER_COMMON_CFLAGS -g) 4853cab2bb3Spatrickendif() 4863cab2bb3Spatrick 4873cab2bb3Spatrickif(LLVM_ENABLE_MODULES) 4883cab2bb3Spatrick # Sanitizers cannot be built with -fmodules. The interceptors intentionally 4893cab2bb3Spatrick # don't include system headers, which is incompatible with modules. 4903cab2bb3Spatrick list(APPEND SANITIZER_COMMON_CFLAGS -fno-modules) 4913cab2bb3Spatrickendif() 4923cab2bb3Spatrick 4933cab2bb3Spatrick# Turn off several warnings. 4943cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WGNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS) 4953cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS) 4963cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS) 497*810390e3Srobert# format-pedantic warns about passing T* for %p, which is not useful. 4983cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WD4146_FLAG /wd4146 SANITIZER_COMMON_CFLAGS) 4993cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS) 5003cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS) 5013cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS) 5023cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS) 5033cab2bb3Spatrick 5043cab2bb3Spatrickappend_list_if(MINGW -fms-extensions SANITIZER_COMMON_CFLAGS) 5053cab2bb3Spatrick 506*810390e3Srobert# When lsan scans the stack for detecting reachable pointers, it's possible for 507*810390e3Srobert# a leaked pointer, which was pushed to the stack on an earlier function call, 508*810390e3Srobert# to still exist on the stack when doing a leak check if that part of the stack 509*810390e3Srobert# was not overwritten. In particular, if there's any uninitialized data in the 510*810390e3Srobert# lsan runtime, and the SP we start from is sufficiently deep into the runtime, 511*810390e3Srobert# then a leaked pointer could be marked as reachable. Such instances could be 512*810390e3Srobert# mitigated by clobbering any uninitialized data. Note that this won't cover 513*810390e3Srobert# all possible uninitialized stack contents, such as those used for register 514*810390e3Srobert# spill slots, unused portions for alignment, or even local variables not 515*810390e3Srobert# yet in scope at a certain point in the function. 516*810390e3Srobert# 517*810390e3Srobert# Note that this type of issue was discovered with lsan, but can apply to other 518*810390e3Srobert# sanitizers. 519*810390e3Srobertappend_list_if(COMPILER_RT_HAS_TRIVIAL_AUTO_INIT -ftrivial-auto-var-init=pattern SANITIZER_COMMON_CFLAGS) 520*810390e3Srobert 5213cab2bb3Spatrick# Set common link flags. 522*810390e3Srobert# TODO: We should consider using the same model as libc++, that is use either 523*810390e3Srobert# -nostdlib++ and --unwindlib=none if supported, or -nodefaultlibs otherwise. 524*810390e3Srobertappend_list_if(C_SUPPORTS_NODEFAULTLIBS_FLAG -nodefaultlibs SANITIZER_COMMON_LINK_FLAGS) 5253cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_Z_TEXT -Wl,-z,text SANITIZER_COMMON_LINK_FLAGS) 5263cab2bb3Spatrick 527*810390e3Srobert# Only necessary for 32-bit SPARC. Solaris 11.2+ ld uses -z ignore/-z record 528*810390e3Srobert# natively, but supports --as-needed/--no-as-needed for GNU ld compatibility. 529*810390e3Srobertif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "sparc") 530*810390e3Srobert list(APPEND SANITIZER_COMMON_LINK_LIBS -Wl,--as-needed atomic -Wl,--no-as-needed) 531*810390e3Srobertendif() 532*810390e3Srobert 5333cab2bb3Spatrickif (COMPILER_RT_USE_BUILTINS_LIBRARY) 5343cab2bb3Spatrick string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}") 5353cab2bb3Spatrickelse() 5363cab2bb3Spatrick if (ANDROID) 5373cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_GCC_LIB gcc SANITIZER_COMMON_LINK_LIBS) 5383cab2bb3Spatrick else() 5393cab2bb3Spatrick append_list_if(COMPILER_RT_HAS_GCC_S_LIB gcc_s SANITIZER_COMMON_LINK_LIBS) 5403cab2bb3Spatrick endif() 5413cab2bb3Spatrickendif() 5423cab2bb3Spatrick 5433cab2bb3Spatrickappend_list_if(COMPILER_RT_HAS_LIBC c SANITIZER_COMMON_LINK_LIBS) 5443cab2bb3Spatrickif("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia") 5453cab2bb3Spatrick list(APPEND SANITIZER_COMMON_LINK_LIBS zircon) 5463cab2bb3Spatrickendif() 5473cab2bb3Spatrick 548d89ec533Spatrickif("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia") 549d89ec533Spatrick set(SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT ON) 550d89ec533Spatrickelse() 551d89ec533Spatrick set(SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT OFF) 552d89ec533Spatrickendif() 553d89ec533Spatrickoption(SANITIZER_NO_UNDEFINED_SYMBOLS "Report error on unresolved symbol references" ${SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT}) 554d89ec533Spatrickif (SANITIZER_NO_UNDEFINED_SYMBOLS) 555d89ec533Spatrick list(APPEND SANITIZER_COMMON_LINK_FLAGS -Wl,-z,defs) 556d89ec533Spatrickendif() 557d89ec533Spatrick 558d89ec533Spatrick# TODO: COMPILER_RT_COMMON_CFLAGS and COMPILER_RT_COMMON_LINK_FLAGS are 559d89ec533Spatrick# intended for use in non-sanitizer runtimes such as libFuzzer, profile or XRay, 560d89ec533Spatrick# move these higher to include common flags, then derive SANITIZER_COMMON_CFLAGS 561d89ec533Spatrick# and SANITIZER_COMMON_LINK_FLAGS from those and append sanitizer-specific flags. 562d89ec533Spatrickset(COMPILER_RT_COMMON_CFLAGS ${SANITIZER_COMMON_CFLAGS}) 563d89ec533Spatrickset(COMPILER_RT_COMMON_LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS}) 564d89ec533Spatrick 565d89ec533Spatrick# We don't use the C++ standard library, so avoid including it by mistake. 566d89ec533Spatrickappend_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ SANITIZER_COMMON_CFLAGS) 567d89ec533Spatrickappend_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ SANITIZER_COMMON_LINK_FLAGS) 568d89ec533Spatrick 569d89ec533Spatrick# Remove -stdlib= which is unused when passing -nostdinc++... 570d89ec533Spatrickstring(REGEX MATCHALL "-stdlib=[a-zA-Z+]*" stdlib_flag "${CMAKE_CXX_FLAGS}") 571d89ec533Spatrickstring(REGEX REPLACE "-stdlib=[a-zA-Z+]*" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 572d89ec533Spatrick 573d89ec533Spatrick# ...we need it to build some runtimes and tests so readd it where appropriate. 574d89ec533Spatricklist(APPEND COMPILER_RT_COMMON_CFLAGS ${stdlib_flag}) 575d89ec533Spatricklist(APPEND COMPILER_RT_COMMON_LINK_FLAGS ${stdlib_flag}) 576d89ec533Spatrick 577d89ec533Spatrick# TODO: There's a lot of duplication across lib/*/tests/CMakeLists.txt files, 578d89ec533Spatrick# move some of the common flags to COMPILER_RT_UNITTEST_CFLAGS. 579d89ec533Spatrick 580d89ec533Spatrick# Unittests need access to C++ standard library. 581d89ec533Spatrickstring(APPEND COMPILER_RT_TEST_COMPILER_CFLAGS " ${stdlib_flag}") 582d89ec533Spatrick 583d89ec533Spatrick# When cross-compiling, COMPILER_RT_TEST_COMPILER_CFLAGS help in compilation 584d89ec533Spatrick# and linking of unittests. 585d89ec533Spatrickstring(REPLACE " " ";" COMPILER_RT_UNITTEST_CFLAGS "${COMPILER_RT_TEST_COMPILER_CFLAGS}") 586d89ec533Spatrickset(COMPILER_RT_UNITTEST_LINK_FLAGS ${COMPILER_RT_UNITTEST_CFLAGS}) 587d89ec533Spatrick 588*810390e3Srobertif(COMPILER_RT_USE_LLVM_UNWINDER) 589*810390e3Srobert # We're linking directly against the libunwind that we're building so don't 590*810390e3Srobert # try to link in the toolchain's default libunwind which may be missing. 591*810390e3Srobert append_list_if(CXX_SUPPORTS_UNWINDLIB_NONE_FLAG --unwindlib=none COMPILER_RT_COMMON_LINK_FLAGS) 592*810390e3Srobert append_list_if(CXX_SUPPORTS_UNWINDLIB_NONE_FLAG --unwindlib=none COMPILER_RT_UNITTEST_LINK_FLAGS) 593*810390e3Srobert if (COMPILER_RT_ENABLE_STATIC_UNWINDER) 594*810390e3Srobert list(APPEND COMPILER_RT_UNWINDER_LINK_LIBS "$<TARGET_LINKER_FILE:unwind_static>") 595*810390e3Srobert else() 596*810390e3Srobert list(APPEND COMPILER_RT_UNWINDER_LINK_LIBS "$<TARGET_LINKER_FILE:$<IF:$<TARGET_EXISTS:unwind_shared>,unwind_shared,unwind_static>>") 597*810390e3Srobert endif() 598*810390e3Srobertendif() 599*810390e3Srobert 600*810390e3Srobertif (COMPILER_RT_CXX_LIBRARY STREQUAL "libcxx") 601*810390e3Srobert # We are using the in-tree libc++ so avoid including the default one. 602*810390e3Srobert append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ COMPILER_RT_COMMON_CFLAGS) 603*810390e3Srobert append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ COMPILER_RT_COMMON_LINK_FLAGS) 604*810390e3Srobert # Use the in-tree libc++ through explicit include and library paths. 605*810390e3Srobert set(COMPILER_RT_CXX_CFLAGS "$<$<TARGET_EXISTS:cxx-headers>:$<IF:$<BOOL:${MSVC}>,/imsvc,-isystem>$<JOIN:$<TARGET_PROPERTY:cxx-headers,INTERFACE_INCLUDE_DIRECTORIES>,$<SEMICOLON>$<IF:$<BOOL:${MSVC}>,/imsvc,-isystem>>>") 606*810390e3Srobert if (COMPILER_RT_STATIC_CXX_LIBRARY) 607*810390e3Srobert set(COMPILER_RT_CXX_LINK_LIBS "$<TARGET_LINKER_FILE:cxx_static>") 608*810390e3Srobert else() 609*810390e3Srobert set(COMPILER_RT_CXX_LINK_LIBS "$<TARGET_LINKER_FILE:$<IF:$<TARGET_EXISTS:cxx_shared>,cxx_shared,cxx_static>>") 610*810390e3Srobert endif() 611*810390e3Srobertelseif (COMPILER_RT_CXX_LIBRARY STREQUAL "none") 612*810390e3Srobert # We aren't using any C++ standard library so avoid including the default one. 613*810390e3Srobert append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ COMPILER_RT_COMMON_CFLAGS) 614*810390e3Srobert append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ COMPILER_RT_COMMON_LINK_FLAGS) 615*810390e3Srobertelse() 616*810390e3Srobert # Nothing to be done for `default`. 617*810390e3Srobertendif() 618*810390e3Srobert 619*810390e3Srobertif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libc++") 620*810390e3Srobert if (SANITIZER_CXX_ABI_INTREE) 621*810390e3Srobert # TODO: We don't need to add --unwindlib=none to SANITIZER_COMMON_LINK_FLAGS 622*810390e3Srobert # because we added -nodefaultlibs there earlier, and adding would result in 623*810390e3Srobert # a warning, but if we switch to -nostdlib++, we would need to add it here. 624*810390e3Srobert # append_list_if(CXX_SUPPORTS_UNWINDLIB_NONE_FLAG --unwindlib=none SANITIZER_COMMON_LINK_FLAGS) 625*810390e3Srobert if(SANITIZER_USE_STATIC_CXX_ABI) 626*810390e3Srobert if(TARGET libcxx-abi-static) 627*810390e3Srobert set(SANITIZER_CXX_ABI_LIBRARIES libcxx-abi-static) 628*810390e3Srobert endif() 629*810390e3Srobert else() 630*810390e3Srobert if(TARGET libcxx-abi-shared) 631*810390e3Srobert set(SANITIZER_CXX_ABI_LIBRARIES libcxx-abi-shared) 632*810390e3Srobert elseif(TARGET libcxx-abi-static) 633*810390e3Srobert set(SANITIZER_CXX_ABI_LIBRARIES libcxx-abi-static) 634*810390e3Srobert endif() 635*810390e3Srobert endif() 636*810390e3Srobert else() 637*810390e3Srobert append_list_if(COMPILER_RT_HAS_LIBCXX c++ SANITIZER_CXX_ABI_LIBRARIES) 638*810390e3Srobert endif() 639*810390e3Srobertelseif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libcxxabi") 640*810390e3Srobert list(APPEND SANITIZER_CXX_ABI_LIBRARIES "c++abi") 641*810390e3Srobertelseif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libstdc++") 642*810390e3Srobert append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ SANITIZER_CXX_ABI_LIBRARIES) 643*810390e3Srobertendif() 644*810390e3Srobert 645*810390e3Srobertif (SANITIZER_TEST_CXX_LIBNAME STREQUAL "libc++") 646*810390e3Srobert if (SANITIZER_TEST_CXX_INTREE) 647*810390e3Srobert list(APPEND SANITIZER_TEST_CXX_CFLAGS "$<$<TARGET_EXISTS:cxx-headers>:$<IF:$<BOOL:${MSVC}>,/imsvc,-isystem>$<JOIN:$<TARGET_PROPERTY:cxx-headers,INTERFACE_INCLUDE_DIRECTORIES>,$<SEMICOLON>$<IF:$<BOOL:${MSVC}>,/imsvc,-isystem>>>") 648*810390e3Srobert if (SANITIZER_USE_STATIC_TEST_CXX) 649*810390e3Srobert list(APPEND SANITIZER_TEST_CXX_LIBRARIES "$<TARGET_LINKER_FILE:cxx_static>") 650*810390e3Srobert else() 651*810390e3Srobert list(APPEND SANITIZER_TEST_CXX_LIBRARIES "$<TARGET_LINKER_FILE:$<IF:$<TARGET_EXISTS:cxx_shared>,cxx_shared,cxx_static>>") 652*810390e3Srobert endif() 653*810390e3Srobert # We are using the in tree libc++ so avoid including the default one. 654*810390e3Srobert append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ COMPILER_RT_UNITTEST_CFLAGS) 655*810390e3Srobert append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ COMPILER_RT_UNITTEST_LINK_FLAGS) 656*810390e3Srobert else() 657*810390e3Srobert append_list_if(COMPILER_RT_HAS_LIBCXX -lc++ SANITIZER_TEST_CXX_LIBRARIES) 658*810390e3Srobert endif() 659*810390e3Srobertelseif (SANITIZER_TEST_CXX_LIBNAME STREQUAL "libstdc++") 660*810390e3Srobert append_list_if(COMPILER_RT_HAS_LIBSTDCXX -lstdc++ SANITIZER_TEST_CXX_LIBRARIES) 661*810390e3Srobertendif() 662*810390e3Srobert 663d89ec533Spatrick# Unittests support. 664*810390e3Srobert# FIXME: When compiler-rt is build using -DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON, then 665*810390e3Srobert# The LLVM_THIRD_PARTY_DIR variable is not set. 666*810390e3Srobertif (NOT LLVM_THIRD_PARTY_DIR) 667*810390e3Srobert set(LLVM_THIRD_PARTY_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../third-party") 668*810390e3Srobertendif() 669*810390e3Srobert 670*810390e3Srobertset(COMPILER_RT_GTEST_PATH ${LLVM_THIRD_PARTY_DIR}/unittest/googletest) 671d89ec533Spatrickset(COMPILER_RT_GTEST_SOURCE ${COMPILER_RT_GTEST_PATH}/src/gtest-all.cc) 672d89ec533Spatrickset(COMPILER_RT_GTEST_CFLAGS 673d89ec533Spatrick -DGTEST_NO_LLVM_SUPPORT=1 674d89ec533Spatrick -DGTEST_HAS_RTTI=0 675d89ec533Spatrick -I${COMPILER_RT_GTEST_PATH}/include 676d89ec533Spatrick -I${COMPILER_RT_GTEST_PATH} 677d89ec533Spatrick) 678d89ec533Spatrick 679d89ec533Spatrick# Mocking support. 680*810390e3Srobertset(COMPILER_RT_GMOCK_PATH ${LLVM_THIRD_PARTY_DIR}/unittest/googlemock) 681d89ec533Spatrickset(COMPILER_RT_GMOCK_SOURCE ${COMPILER_RT_GMOCK_PATH}/src/gmock-all.cc) 682d89ec533Spatrickset(COMPILER_RT_GMOCK_CFLAGS 683d89ec533Spatrick -DGTEST_NO_LLVM_SUPPORT=1 684d89ec533Spatrick -DGTEST_HAS_RTTI=0 685d89ec533Spatrick -I${COMPILER_RT_GMOCK_PATH}/include 686d89ec533Spatrick -I${COMPILER_RT_GMOCK_PATH} 687d89ec533Spatrick) 688d89ec533Spatrick 689*810390e3Srobertif(COMPILER_RT_HAS_G_FLAG) 690*810390e3Srobert list(APPEND COMPILER_RT_UNITTEST_CFLAGS -g) 691*810390e3Srobertendif() 692d89ec533Spatrickappend_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 COMPILER_RT_UNITTEST_CFLAGS) 693d89ec533Spatrickappend_list_if(COMPILER_RT_HAS_WCOVERED_SWITCH_DEFAULT_FLAG -Wno-covered-switch-default COMPILER_RT_UNITTEST_CFLAGS) 694d89ec533Spatrickappend_list_if(COMPILER_RT_HAS_WSUGGEST_OVERRIDE_FLAG -Wno-suggest-override COMPILER_RT_UNITTEST_CFLAGS) 695d89ec533Spatrick 696d89ec533Spatrickif(MSVC) 697d89ec533Spatrick # gtest use a lot of stuff marked as deprecated on Windows. 698d89ec533Spatrick list(APPEND COMPILER_RT_GTEST_CFLAGS -Wno-deprecated-declarations) 699d89ec533Spatrickendif() 700d89ec533Spatrick 7013cab2bb3Spatrick# Warnings to turn off for all libraries, not just sanitizers. 7023cab2bb3Spatrickappend_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 7033cab2bb3Spatrick 7043cab2bb3Spatrickif (CMAKE_LINKER MATCHES "link.exe$") 7053cab2bb3Spatrick # Silence MSVC linker warnings caused by empty object files. The 7063cab2bb3Spatrick # sanitizer libraries intentionally use ifdefs that result in empty 7073cab2bb3Spatrick # files, rather than skipping these files in the build system. 7083cab2bb3Spatrick # Ideally, we would pass this flag only for the libraries that need 7093cab2bb3Spatrick # it, but CMake doesn't seem to have a way to set linker flags for 7103cab2bb3Spatrick # individual static libraries, so we enable the suppression flag for 7113cab2bb3Spatrick # the whole compiler-rt project. 7123cab2bb3Spatrick set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} /IGNORE:4221") 7133cab2bb3Spatrickendif() 7143cab2bb3Spatrick 7153cab2bb3Spatrickadd_subdirectory(include) 7163cab2bb3Spatrick 7173cab2bb3Spatrickoption(COMPILER_RT_USE_LIBCXX 7183cab2bb3Spatrick "Enable compiler-rt to use libc++ from the source tree" ON) 7193cab2bb3Spatrickif(COMPILER_RT_USE_LIBCXX) 7203cab2bb3Spatrick if(LLVM_ENABLE_PROJECTS_USED) 7213cab2bb3Spatrick # Don't use libcxx if LLVM_ENABLE_PROJECTS does not enable it. 7223cab2bb3Spatrick set(COMPILER_RT_LIBCXX_PATH ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR}) 7233cab2bb3Spatrick set(COMPILER_RT_LIBCXXABI_PATH ${LLVM_EXTERNAL_LIBCXXABI_SOURCE_DIR}) 7243cab2bb3Spatrick else() 7253cab2bb3Spatrick foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxx 7263cab2bb3Spatrick ${LLVM_MAIN_SRC_DIR}/runtimes/libcxx 7273cab2bb3Spatrick ${LLVM_MAIN_SRC_DIR}/../libcxx 7283cab2bb3Spatrick ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR}) 7293cab2bb3Spatrick if(IS_DIRECTORY ${path}) 7303cab2bb3Spatrick set(COMPILER_RT_LIBCXX_PATH ${path}) 7313cab2bb3Spatrick break() 7323cab2bb3Spatrick endif() 7333cab2bb3Spatrick endforeach() 7343cab2bb3Spatrick foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxxabi 7353cab2bb3Spatrick ${LLVM_MAIN_SRC_DIR}/runtimes/libcxxabi 7363cab2bb3Spatrick ${LLVM_MAIN_SRC_DIR}/../libcxxabi 7373cab2bb3Spatrick ${LLVM_EXTERNAL_LIBCXXABI_SOURCE_DIR}) 7383cab2bb3Spatrick if(IS_DIRECTORY ${path}) 7393cab2bb3Spatrick set(COMPILER_RT_LIBCXXABI_PATH ${path}) 7403cab2bb3Spatrick break() 7413cab2bb3Spatrick endif() 7423cab2bb3Spatrick endforeach() 7433cab2bb3Spatrick endif() 7443cab2bb3Spatrickendif() 7453cab2bb3Spatrick 7463cab2bb3Spatrickset(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld) 7473cab2bb3Spatrickif(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD) 7483cab2bb3Spatrick set(COMPILER_RT_HAS_LLD TRUE) 7493cab2bb3Spatrickelse() 7503cab2bb3Spatrick set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/../lld) 7513cab2bb3Spatrick if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD) 7523cab2bb3Spatrick set(COMPILER_RT_HAS_LLD TRUE) 7533cab2bb3Spatrick endif() 7543cab2bb3Spatrickendif() 755d89ec533Spatrick 756d89ec533Spatrickif(ANDROID) 757d89ec533Spatrick set(COMPILER_RT_HAS_LLD TRUE) 758d89ec533Spatrick set(COMPILER_RT_TEST_USE_LLD TRUE) 759d89ec533Spatrick append_list_if(COMPILER_RT_HAS_FUSE_LD_LLD_FLAG -fuse-ld=lld SANITIZER_COMMON_LINK_FLAGS) 760d89ec533Spatrick append_list_if(COMPILER_RT_HAS_LLD -fuse-ld=lld COMPILER_RT_UNITTEST_LINK_FLAGS) 761d89ec533Spatrickendif() 7623cab2bb3Spatrickpythonize_bool(COMPILER_RT_HAS_LLD) 763d89ec533Spatrickpythonize_bool(COMPILER_RT_TEST_USE_LLD) 7643cab2bb3Spatrick 7653cab2bb3Spatrickadd_subdirectory(lib) 7663cab2bb3Spatrick 7673cab2bb3Spatrickif(COMPILER_RT_INCLUDE_TESTS) 7683cab2bb3Spatrick add_subdirectory(unittests) 7693cab2bb3Spatrick add_subdirectory(test) 770d89ec533Spatrick # Don't build llvm-lit for runtimes-build, it will clean up map_config. 771d89ec533Spatrick if (COMPILER_RT_STANDALONE_BUILD AND NOT LLVM_RUNTIMES_BUILD) 7723cab2bb3Spatrick # If we have a valid source tree, generate llvm-lit into the bin directory. 7733cab2bb3Spatrick # The user can still choose to have the check targets *use* a different lit 7743cab2bb3Spatrick # by specifying -DLLVM_EXTERNAL_LIT, but we generate it regardless. 7753cab2bb3Spatrick if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/llvm-lit) 7761f9cb04fSpatrick # Needed for lit support in standalone builds. 7771f9cb04fSpatrick include(AddLLVM) 7783cab2bb3Spatrick add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/llvm-lit ${CMAKE_CURRENT_BINARY_DIR}/llvm-lit) 7793cab2bb3Spatrick elseif(NOT EXISTS ${LLVM_EXTERNAL_LIT}) 7803cab2bb3Spatrick message(WARNING "Could not find LLVM source directory and LLVM_EXTERNAL_LIT does not" 7813cab2bb3Spatrick "point to a valid file. You will not be able to run tests.") 7823cab2bb3Spatrick endif() 7833cab2bb3Spatrick endif() 7843cab2bb3Spatrickendif() 7853cab2bb3Spatrick 7863cab2bb3Spatrickadd_subdirectory(tools) 787