1# CMake build for CompilerRT. 2# 3# An important constraint of the build is that it only produces libraries 4# based on the ability of the host toolchain to target various platforms. 5 6cmake_minimum_required(VERSION 3.13.4) 7 8# Check if compiler-rt is built as a standalone project. 9if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD) 10 project(CompilerRT C CXX ASM) 11 set(COMPILER_RT_STANDALONE_BUILD TRUE) 12 set_property(GLOBAL PROPERTY USE_FOLDERS ON) 13 if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0") 14 message(WARNING 15 "Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the " 16 "minimum version of CMake required to build LLVM will become 3.20.0, and " 17 "using an older CMake will become an error. Please upgrade your CMake to " 18 "at least 3.20.0 now to avoid issues in the future!") 19 endif() 20endif() 21 22set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") 23 24# Add path for custom compiler-rt modules. 25list(INSERT CMAKE_MODULE_PATH 0 26 "${CMAKE_CURRENT_SOURCE_DIR}/cmake" 27 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" 28 "${LLVM_COMMON_CMAKE_UTILS}" 29 "${LLVM_COMMON_CMAKE_UTILS}/Modules" 30 ) 31 32if(CMAKE_CONFIGURATION_TYPES) 33 set(CMAKE_CFG_RESOLVED_INTDIR "${CMAKE_CFG_INTDIR}/") 34else() 35 set(CMAKE_CFG_RESOLVED_INTDIR "") 36endif() 37 38include(SetPlatformToolchainTools) 39include(base-config-ix) 40include(CompilerRTUtils) 41include(CMakeDependentOption) 42 43option(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON) 44mark_as_advanced(COMPILER_RT_BUILD_BUILTINS) 45option(COMPILER_RT_DISABLE_AARCH64_FMV "Disable AArch64 Function Multi Versioning support" OFF) 46mark_as_advanced(COMPILER_RT_DISABLE_AARCH64_FMV) 47option(COMPILER_RT_BUILD_CRT "Build crtbegin.o/crtend.o" ON) 48mark_as_advanced(COMPILER_RT_BUILD_CRT) 49option(COMPILER_RT_CRT_USE_EH_FRAME_REGISTRY "Use eh_frame in crtbegin.o/crtend.o" ON) 50mark_as_advanced(COMPILER_RT_CRT_USE_EH_FRAME_REGISTRY) 51option(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON) 52mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS) 53option(COMPILER_RT_BUILD_XRAY "Build xray" ON) 54mark_as_advanced(COMPILER_RT_BUILD_XRAY) 55option(COMPILER_RT_BUILD_LIBFUZZER "Build libFuzzer" ON) 56mark_as_advanced(COMPILER_RT_BUILD_LIBFUZZER) 57option(COMPILER_RT_BUILD_PROFILE "Build profile runtime" ON) 58mark_as_advanced(COMPILER_RT_BUILD_PROFILE) 59option(COMPILER_RT_BUILD_MEMPROF "Build memory profiling runtime" ON) 60mark_as_advanced(COMPILER_RT_BUILD_MEMPROF) 61option(COMPILER_RT_BUILD_XRAY_NO_PREINIT "Build xray with no preinit patching" OFF) 62mark_as_advanced(COMPILER_RT_BUILD_XRAY_NO_PREINIT) 63option(COMPILER_RT_BUILD_ORC "Build ORC runtime" ON) 64mark_as_advanced(COMPILER_RT_BUILD_ORC) 65option(COMPILER_RT_BUILD_GWP_ASAN "Build GWP-ASan, and link it into SCUDO" ON) 66mark_as_advanced(COMPILER_RT_BUILD_GWP_ASAN) 67option(COMPILER_RT_ENABLE_CET "Build Compiler RT with CET enabled" OFF) 68 69option(COMPILER_RT_SCUDO_STANDALONE_SYSROOT_PATH "Set custom sysroot for building SCUDO standalone" OFF) 70mark_as_advanced(COMPILER_RT_SCUDO_STANDALONE_SYSROOT_PATH) 71option(COMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED "Build SCUDO standalone for shared libraries" ON) 72mark_as_advanced(COMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED) 73option(COMPILER_RT_BUILD_SCUDO_STANDALONE_WITH_LLVM_LIBC "Build SCUDO standalone with LLVM's libc headers" OFF) 74mark_as_advanced(COMPILER_RT_BUILD_SCUDO_STANDALONE_WITH_LLVM_LIBC) 75 76if(FUCHSIA) 77 set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT OFF) 78else() 79 set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT ON) 80endif() 81set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS ${COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT} CACHE BOOL "Enable libc interceptors in HWASan (testing mode)") 82 83set(COMPILER_RT_BAREMETAL_BUILD OFF CACHE BOOL 84 "Build for a bare-metal target.") 85 86if (COMPILER_RT_STANDALONE_BUILD) 87 set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") 88 set(CMAKE_CXX_STANDARD_REQUIRED YES) 89 set(CMAKE_CXX_EXTENSIONS NO) 90 91 if (NOT LLVM_RUNTIMES_BUILD) 92 load_llvm_config() 93 endif() 94 if (TARGET intrinsics_gen) 95 # Loading the llvm config causes this target to be imported so place it 96 # under the appropriate folder in an IDE. 97 set_target_properties(intrinsics_gen PROPERTIES FOLDER "Compiler-RT Misc") 98 endif() 99 100 find_package(Python3 COMPONENTS Interpreter) 101 if(NOT Python3_Interpreter_FOUND) 102 message(WARNING "Python3 not found, using python2 as a fallback") 103 find_package(Python2 COMPONENTS Interpreter REQUIRED) 104 if(Python2_VERSION VERSION_LESS 2.7) 105 message(SEND_ERROR "Python 2.7 or newer is required") 106 endif() 107 108 # Treat python2 as python3 109 add_executable(Python3::Interpreter IMPORTED) 110 set_target_properties(Python3::Interpreter PROPERTIES 111 IMPORTED_LOCATION ${Python2_EXECUTABLE}) 112 set(Python3_EXECUTABLE ${Python2_EXECUTABLE}) 113 endif() 114 115 # Ensure that fat libraries are built correctly on Darwin 116 if(APPLE) 117 include(UseLibtool) 118 endif() 119 120 # Define default arguments to lit. 121 set(LIT_ARGS_DEFAULT "-sv") 122 if (MSVC OR XCODE) 123 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 124 endif() 125 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 126 set(LLVM_LIT_OUTPUT_DIR "${COMPILER_RT_EXEC_OUTPUT_DIR}") 127endif() 128 129construct_compiler_rt_default_triple() 130if ("${COMPILER_RT_DEFAULT_TARGET_TRIPLE}" MATCHES ".*hf$") 131 if (${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "^arm") 132 set(COMPILER_RT_DEFAULT_TARGET_ARCH "armhf") 133 CHECK_SYMBOL_EXISTS (__thumb__ "" COMPILER_RT_ARM_THUMB) 134 endif() 135endif() 136if (${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "^mips") 137 CHECK_SYMBOL_EXISTS (_MIPS_ARCH_MIPS32R6 "" COMPILER_RT_MIPS32R6) 138 CHECK_SYMBOL_EXISTS (_MIPS_ARCH_MIPS64R6 "" COMPILER_RT_MIPS64R6) 139 CHECK_SYMBOL_EXISTS (__mips64 "" COMPILER_RT_MIPS_64) 140 CHECK_SYMBOL_EXISTS (__MIPSEL__ "" COMPILER_RT_MIPS_EL) 141 if ("${COMPILER_RT_MIPS_64}") 142 set(COMPILER_RT_DEFAULT_TARGET_ARCH "mips64") 143 else() 144 set(COMPILER_RT_DEFAULT_TARGET_ARCH "mips") 145 endif() 146 if ("${COMPILER_RT_MIPS_EL}") 147 set(COMPILER_RT_DEFAULT_TARGET_ARCH "${COMPILER_RT_DEFAULT_TARGET_ARCH}el") 148 endif() 149endif() 150if ("${COMPILER_RT_DEFAULT_TARGET_TRIPLE}" MATCHES ".*android.*") 151 set(ANDROID 1) 152 string(REGEX MATCH "-target(=| +)[^ ]+android[a-z]*([0-9]+)" ANDROID_API_LEVEL "${CMAKE_C_FLAGS}") 153 set(ANDROID_API_LEVEL ${CMAKE_MATCH_2}) 154endif() 155pythonize_bool(ANDROID) 156 157set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 158set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 159 160pythonize_bool(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR) 161 162# We support running instrumented tests when we're not cross-compiling 163# and target a UNIX-like system or Windows. 164# We can run tests on Android even when we are cross-compiling. 165if(("${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "${CMAKE_SYSTEM_NAME}" AND (UNIX OR WIN32)) 166 OR ANDROID OR COMPILER_RT_EMULATOR) 167 option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON) 168else() 169 option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF) 170endif() 171 172option(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF) 173option(COMPILER_RT_EXTERNALIZE_DEBUGINFO 174 "Generate dSYM files and strip executables and libraries (Darwin Only)" OFF) 175# COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in. 176pythonize_bool(COMPILER_RT_DEBUG) 177 178option(COMPILER_RT_INTERCEPT_LIBDISPATCH 179 "Support interception of libdispatch (GCD). Requires '-fblocks'" OFF) 180option(COMPILER_RT_LIBDISPATCH_INSTALL_PATH 181 "Specify if libdispatch is installed in a custom location" "") 182if (COMPILER_RT_INTERCEPT_LIBDISPATCH AND NOT APPLE) 183 set(COMPILER_RT_LIBDISPATCH_CFLAGS -fblocks) 184 set(COMPILER_RT_TEST_LIBDISPATCH_CFLAGS) 185 if (COMPILER_RT_LIBDISPATCH_INSTALL_PATH) 186 list(APPEND COMPILER_RT_TEST_LIBDISPATCH_CFLAGS 187 -I${COMPILER_RT_LIBDISPATCH_INSTALL_PATH}/include 188 -L${COMPILER_RT_LIBDISPATCH_INSTALL_PATH}/lib 189 -Wl,-rpath=${COMPILER_RT_LIBDISPATCH_INSTALL_PATH}/lib) 190 endif() 191 list(APPEND COMPILER_RT_TEST_LIBDISPATCH_CFLAGS -lBlocksRuntime -ldispatch) 192endif() 193if (APPLE) # Always enable on Apple platforms. 194 set(COMPILER_RT_INTERCEPT_LIBDISPATCH ON) 195endif() 196pythonize_bool(COMPILER_RT_INTERCEPT_LIBDISPATCH) 197 198if(APPLE AND SANITIZER_MIN_OSX_VERSION AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9") 199 # Mac OS X prior to 10.9 had problems with exporting symbols from 200 # libc++/libc++abi. 201 set(cxxabi_supported OFF) 202else() 203 set(cxxabi_supported ON) 204endif() 205 206option(SANITIZER_ALLOW_CXXABI "Allow use of C++ ABI details in ubsan" ON) 207 208set(SANITIZER_CAN_USE_CXXABI OFF) 209if (cxxabi_supported AND SANITIZER_ALLOW_CXXABI) 210 set(SANITIZER_CAN_USE_CXXABI ON) 211endif() 212pythonize_bool(SANITIZER_CAN_USE_CXXABI) 213 214macro(handle_default_cxx_lib var) 215 # Specifying -stdlib= in CMAKE_CXX_FLAGS overrides the defaults. 216 if (CMAKE_CXX_FLAGS MATCHES "-stdlib=([a-zA-Z+]*)") 217 set(${var}_LIBNAME "${CMAKE_MATCH_1}") 218 set(${var}_SYSTEM 1) 219 elseif (${var} STREQUAL "default") 220 if (APPLE OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD") 221 set(${var}_LIBNAME "libc++") 222 set(${var}_SYSTEM 1) 223 elseif (FUCHSIA) 224 set(${var}_LIBNAME "libc++") 225 set(${var}_INTREE 1) 226 else() 227 set(${var}_LIBNAME "libstdc++") 228 set(${var}_SYSTEM 1) 229 endif() 230 else() 231 set(${var}_LIBNAME "${${var}}") 232 set(${var}_SYSTEM 1) 233 endif() 234endmacro() 235 236# This is either directly the C++ ABI library or the full C++ library 237# which pulls in the ABI transitively. 238# TODO: Mark this as internal flag, most users should use COMPILER_RT_CXX_LIBRARY. 239set(SANITIZER_CXX_ABI "default" CACHE STRING 240 "Specify C++ ABI library to use.") 241set(CXXABIS none default libstdc++ libc++ libcxxabi) 242set_property(CACHE SANITIZER_CXX_ABI PROPERTY STRINGS ;${CXXABIS}) 243handle_default_cxx_lib(SANITIZER_CXX_ABI) 244 245# This needs to be a full C++ library for linking gtest and unit tests. 246# TODO: Mark this as internal flag, most users should use COMPILER_RT_CXX_LIBRARY. 247set(SANITIZER_TEST_CXX "default" CACHE STRING 248 "Specify C++ library to use for tests.") 249set(CXXLIBS none default libstdc++ libc++) 250set_property(CACHE SANITIZER_TEST_CXX PROPERTY STRINGS ;${CXXLIBS}) 251handle_default_cxx_lib(SANITIZER_TEST_CXX) 252 253option(COMPILER_RT_USE_LLVM_UNWINDER "Use the LLVM unwinder." OFF) 254cmake_dependent_option(COMPILER_RT_ENABLE_STATIC_UNWINDER 255 "Statically link the LLVM unwinder." OFF 256 "COMPILER_RT_USE_LLVM_UNWINDER" OFF) 257 258set(DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER OFF) 259if (FUCHSIA) 260 set(DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER ON) 261elseif (DEFINED LIBUNWIND_ENABLE_SHARED AND NOT LIBUNWIND_ENABLE_SHARED) 262 set(DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER ON) 263endif() 264 265option(SANITIZER_USE_STATIC_LLVM_UNWINDER 266 "Use static LLVM unwinder." ${DEFAULT_SANITIZER_USE_STATIC_LLVM_UNWINDER}) 267pythonize_bool(SANITIZER_USE_STATIC_LLVM_UNWINDER) 268 269set(DEFAULT_SANITIZER_USE_STATIC_CXX_ABI OFF) 270if (DEFINED LIBCXXABI_ENABLE_SHARED AND NOT LIBCXXABI_ENABLE_SHARED) 271 set(DEFAULT_SANITIZER_USE_STATIC_CXX_ABI ON) 272endif() 273 274option(SANITIZER_USE_STATIC_CXX_ABI 275 "Use static libc++abi." ${DEFAULT_SANITIZER_USE_STATIC_CXX_ABI}) 276pythonize_bool(SANITIZER_USE_STATIC_CXX_ABI) 277 278set(DEFAULT_SANITIZER_USE_STATIC_TEST_CXX OFF) 279if (DEFINED LIBCXX_ENABLE_SHARED AND NOT LIBCXX_ENABLE_SHARED) 280 set(DEFAULT_SANITIZER_USE_STATIC_TEST_CXX ON) 281endif() 282 283option(SANITIZER_USE_STATIC_TEST_CXX 284 "Use static libc++ for tests." ${DEFAULT_SANITIZER_USE_STATIC_TEST_CXX}) 285pythonize_bool(SANITIZER_USE_STATIC_TEST_CXX) 286 287set(COMPILER_RT_SUPPORTED_CXX_LIBRARIES none default libcxx) 288set(COMPILER_RT_CXX_LIBRARY "default" CACHE STRING "Specify C++ library to use. Supported values are ${COMPILER_RT_SUPPORTED_CXX_LIBRARIES}.") 289if (NOT "${COMPILER_RT_CXX_LIBRARY}" IN_LIST COMPILER_RT_SUPPORTED_CXX_LIBRARIES) 290 message(FATAL_ERROR "Unsupported C++ library: '${COMPILER_RT_CXX_LIBRARY}'. Supported values are ${COMPILER_RT_SUPPORTED_CXX_LIBRARIES}.") 291endif() 292cmake_dependent_option(COMPILER_RT_STATIC_CXX_LIBRARY 293 "Statically link the C++ library." OFF 294 "COMPILER_RT_CXX_LIBRARY" OFF) 295 296set(DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY OFF) 297if (FUCHSIA) 298 set(DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY ON) 299endif() 300 301option(COMPILER_RT_USE_BUILTINS_LIBRARY 302 "Use compiler-rt builtins instead of libgcc" ${DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY}) 303 304include(config-ix) 305 306#================================ 307# Setup Compiler Flags 308#================================ 309 310# fcf-protection is a gcc/clang option for CET support on Linux platforms. 311# We need to handle MSVC CET option on Windows platforms. 312if (NOT MSVC) 313 if (COMPILER_RT_ENABLE_CET AND NOT COMPILER_RT_HAS_FCF_PROTECTION_FLAG) 314 message(FATAL_ERROR "Compiler used to build compiler-rt doesn't support CET!") 315 endif() 316endif() 317 318if(MSVC) 319 # Override any existing /W flags with /W4. This is what LLVM does. Failing to 320 # remove other /W[0-4] flags will result in a warning about overriding a 321 # previous flag. 322 if (COMPILER_RT_HAS_W4_FLAG) 323 string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") 324 string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 325 append_string_if(COMPILER_RT_HAS_W4_FLAG /W4 CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 326 endif() 327else() 328 append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 329endif() 330if(COMPILER_RT_ENABLE_WERROR) 331 append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 332 append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 333endif() 334 335# Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP. 336if(NOT COMPILER_RT_HAS_FUNC_SYMBOL) 337 add_definitions(-D__func__=__FUNCTION__) 338endif() 339 340# Provide some common commandline flags for Sanitizer runtimes. 341if("${ANDROID_API_LEVEL}" GREATER_EQUAL 29) 342 list(APPEND SANITIZER_COMMON_CFLAGS -fno-emulated-tls) 343 string(APPEND COMPILER_RT_TEST_COMPILER_CFLAGS " -fno-emulated-tls") 344endif() 345if(NOT WIN32) 346 append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS) 347endif() 348append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS) 349append_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS) 350if(NOT COMPILER_RT_DEBUG AND NOT APPLE) 351 append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS) 352endif() 353append_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS) 354append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS) 355append_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS) 356append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS) 357if(NOT COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG) 358 append_list_if(COMPILER_RT_HAS_FVISIBILITY_INLINES_HIDDEN_FLAG -fvisibility-inlines-hidden SANITIZER_COMMON_CFLAGS) 359endif() 360append_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS) 361 362# By default do not instrument or use profdata for compiler-rt. 363if(NOT COMPILER_RT_ENABLE_PGO) 364 if(LLVM_PROFDATA_FILE AND COMPILER_RT_HAS_FNO_PROFILE_INSTR_USE_FLAG) 365 list(APPEND SANITIZER_COMMON_CFLAGS "-fno-profile-instr-use") 366 endif() 367 if(LLVM_BUILD_INSTRUMENTED MATCHES IR AND COMPILER_RT_HAS_FNO_PROFILE_GENERATE_FLAG) 368 list(APPEND SANITIZER_COMMON_CFLAGS "-fno-profile-generate") 369 elseif((LLVM_BUILD_INSTRUMENTED OR LLVM_BUILD_INSTRUMENTED_COVERAGE) AND COMPILER_RT_HAS_FNO_PROFILE_INSTR_GENERATE_FLAG) 370 list(APPEND SANITIZER_COMMON_CFLAGS "-fno-profile-instr-generate") 371 if(LLVM_BUILD_INSTRUMENTED_COVERAGE AND COMPILER_RT_HAS_FNO_COVERAGE_MAPPING_FLAG) 372 list(APPEND SANITIZER_COMMON_CFLAGS "-fno-coverage-mapping") 373 endif() 374 endif() 375endif() 376 377# The following is a workaround for powerpc64le. This is the only architecture 378# that requires -fno-function-sections to work properly. If lacking, the ASan 379# Linux test function-sections-are-bad.cpp fails with the following error: 380# 'undefined symbol: __sanitizer_unaligned_load32'. 381if(DEFINED TARGET_powerpc64le_CFLAGS) 382 if(CMAKE_CXX_COMPILER_ID MATCHES "XL") 383 append("-qnofuncsect" TARGET_powerpc64le_CFLAGS) 384 else() 385 append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections TARGET_powerpc64le_CFLAGS) 386 endif() 387endif() 388 389# The following is a workaround for s390x. This avoids creation of "partial 390# inline" function fragments when building the asan libraries with certain 391# GCC versions. The presence of those fragments, in particular for the 392# interceptors, changes backtraces seen in asan error cases, which causes 393# testsuite failures. 394if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "s390x") 395 append_list_if(COMPILER_RT_HAS_FNO_PARTIAL_INLINING_FLAG -fno-partial-inlining SANITIZER_COMMON_CFLAGS) 396endif() 397 398if(MSVC) 399 # Replace the /M[DT][d] flags with /MT, and strip any definitions of _DEBUG, 400 # which cause definition mismatches at link time. 401 # FIXME: In fact, sanitizers should support both /MT and /MD, see PR20214. 402 if(COMPILER_RT_HAS_MT_FLAG) 403 foreach(flag_var 404 CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE 405 CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO 406 CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE 407 CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) 408 string(REGEX REPLACE "/M[DT]d" "/MT" ${flag_var} "${${flag_var}}") 409 string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}") 410 string(REGEX REPLACE "/D_DEBUG" "" ${flag_var} "${${flag_var}}") 411 endforeach() 412 endif() 413 append_list_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS) 414 append_list_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS) 415 416 # Disable thread safe initialization for static locals. ASan shouldn't need 417 # it. Thread safe initialization assumes that the CRT has already been 418 # initialized, but ASan initializes before the CRT. 419 list(APPEND SANITIZER_COMMON_CFLAGS /Zc:threadSafeInit-) 420endif() 421 422append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 SANITIZER_COMMON_CFLAGS) 423 424append_list_if(COMPILER_RT_HAS_WTHREAD_SAFETY_FLAG -Wthread-safety THREAD_SAFETY_FLAGS) 425append_list_if(COMPILER_RT_HAS_WTHREAD_SAFETY_REFERENCE_FLAG -Wthread-safety-reference THREAD_SAFETY_FLAGS) 426append_list_if(COMPILER_RT_HAS_WTHREAD_SAFETY_BETA_FLAG -Wthread-safety-beta THREAD_SAFETY_FLAGS) 427list(APPEND SANITIZER_COMMON_CFLAGS ${THREAD_SAFETY_FLAGS}) 428string(REPLACE ";" " " thread_safety_flags_space_sep "${THREAD_SAFETY_FLAGS}") 429string(APPEND COMPILER_RT_TEST_COMPILER_CFLAGS " ${thread_safety_flags_space_sep}") 430 431# If we're using MSVC, 432# always respect the optimization flags set by CMAKE_BUILD_TYPE instead. 433if (NOT MSVC) 434 435 # Build with optimization, unless we're in debug mode. 436 if(COMPILER_RT_DEBUG) 437 list(APPEND SANITIZER_COMMON_CFLAGS -O1) 438 else() 439 list(APPEND SANITIZER_COMMON_CFLAGS -O3) 440 endif() 441endif() 442 443# Determine if we should restrict stack frame sizes. 444# Stack frames on PowerPC, Mips, SystemZ and in debug build can be much larger than 445# anticipated. 446# FIXME: Fix all sanitizers and add -Wframe-larger-than to 447# SANITIZER_COMMON_FLAGS 448if(COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG AND NOT COMPILER_RT_DEBUG 449 AND NOT ${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "powerpc|mips|s390x") 450 set(SANITIZER_LIMIT_FRAME_SIZE TRUE) 451else() 452 set(SANITIZER_LIMIT_FRAME_SIZE FALSE) 453endif() 454 455if(FUCHSIA OR UNIX) 456 set(SANITIZER_USE_SYMBOLS TRUE) 457else() 458 set(SANITIZER_USE_SYMBOLS FALSE) 459endif() 460 461# Build sanitizer runtimes with debug info. 462if(MSVC) 463 # Use /Z7 instead of /Zi for the asan runtime. This avoids the LNK4099 464 # warning from the MS linker complaining that it can't find the 'vc140.pdb' 465 # file used by our object library compilations. 466 list(APPEND SANITIZER_COMMON_CFLAGS /Z7) 467 foreach(var_to_update 468 CMAKE_CXX_FLAGS 469 CMAKE_CXX_FLAGS_DEBUG 470 CMAKE_CXX_FLAGS_RELWITHDEBINFO) 471 string(REGEX REPLACE "(^| )/Z[i7I]($| )" " /Z7 " 472 "${var_to_update}" "${${var_to_update}}") 473 endforeach() 474elseif(APPLE) 475 # On Apple platforms use full debug info (i.e. not `-gline-tables-only`) 476 # for all build types so that the runtime can be debugged. 477 if(NOT COMPILER_RT_HAS_G_FLAG) 478 message(FATAL_ERROR "-g is not supported by host compiler") 479 endif() 480 list(APPEND SANITIZER_COMMON_CFLAGS -g) 481elseif(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG AND NOT COMPILER_RT_DEBUG) 482 list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only) 483elseif(COMPILER_RT_HAS_G_FLAG) 484 list(APPEND SANITIZER_COMMON_CFLAGS -g) 485endif() 486 487if(LLVM_ENABLE_MODULES) 488 # Sanitizers cannot be built with -fmodules. The interceptors intentionally 489 # don't include system headers, which is incompatible with modules. 490 list(APPEND SANITIZER_COMMON_CFLAGS -fno-modules) 491endif() 492 493# Turn off several warnings. 494append_list_if(COMPILER_RT_HAS_WGNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS) 495append_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS) 496append_list_if(COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS) 497# format-pedantic warns about passing T* for %p, which is not useful. 498append_list_if(COMPILER_RT_HAS_WD4146_FLAG /wd4146 SANITIZER_COMMON_CFLAGS) 499append_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS) 500append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS) 501append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS) 502append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS) 503 504append_list_if(MINGW -fms-extensions SANITIZER_COMMON_CFLAGS) 505 506# When lsan scans the stack for detecting reachable pointers, it's possible for 507# a leaked pointer, which was pushed to the stack on an earlier function call, 508# to still exist on the stack when doing a leak check if that part of the stack 509# was not overwritten. In particular, if there's any uninitialized data in the 510# lsan runtime, and the SP we start from is sufficiently deep into the runtime, 511# then a leaked pointer could be marked as reachable. Such instances could be 512# mitigated by clobbering any uninitialized data. Note that this won't cover 513# all possible uninitialized stack contents, such as those used for register 514# spill slots, unused portions for alignment, or even local variables not 515# yet in scope at a certain point in the function. 516# 517# Note that this type of issue was discovered with lsan, but can apply to other 518# sanitizers. 519append_list_if(COMPILER_RT_HAS_TRIVIAL_AUTO_INIT -ftrivial-auto-var-init=pattern SANITIZER_COMMON_CFLAGS) 520 521# Set common link flags. 522# TODO: We should consider using the same model as libc++, that is use either 523# -nostdlib++ and --unwindlib=none if supported, or -nodefaultlibs otherwise. 524append_list_if(C_SUPPORTS_NODEFAULTLIBS_FLAG -nodefaultlibs SANITIZER_COMMON_LINK_FLAGS) 525append_list_if(COMPILER_RT_HAS_Z_TEXT -Wl,-z,text SANITIZER_COMMON_LINK_FLAGS) 526 527# Only necessary for 32-bit SPARC. Solaris 11.2+ ld uses -z ignore/-z record 528# natively, but supports --as-needed/--no-as-needed for GNU ld compatibility. 529if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "sparc") 530 list(APPEND SANITIZER_COMMON_LINK_LIBS -Wl,--as-needed atomic -Wl,--no-as-needed) 531endif() 532 533if (COMPILER_RT_USE_BUILTINS_LIBRARY) 534 string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}") 535else() 536 if (ANDROID) 537 append_list_if(COMPILER_RT_HAS_GCC_LIB gcc SANITIZER_COMMON_LINK_LIBS) 538 else() 539 append_list_if(COMPILER_RT_HAS_GCC_S_LIB gcc_s SANITIZER_COMMON_LINK_LIBS) 540 endif() 541endif() 542 543append_list_if(COMPILER_RT_HAS_LIBC c SANITIZER_COMMON_LINK_LIBS) 544if("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia") 545 list(APPEND SANITIZER_COMMON_LINK_LIBS zircon) 546endif() 547 548if("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia") 549 set(SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT ON) 550else() 551 set(SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT OFF) 552endif() 553option(SANITIZER_NO_UNDEFINED_SYMBOLS "Report error on unresolved symbol references" ${SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT}) 554if (SANITIZER_NO_UNDEFINED_SYMBOLS) 555 list(APPEND SANITIZER_COMMON_LINK_FLAGS -Wl,-z,defs) 556endif() 557 558# TODO: COMPILER_RT_COMMON_CFLAGS and COMPILER_RT_COMMON_LINK_FLAGS are 559# intended for use in non-sanitizer runtimes such as libFuzzer, profile or XRay, 560# move these higher to include common flags, then derive SANITIZER_COMMON_CFLAGS 561# and SANITIZER_COMMON_LINK_FLAGS from those and append sanitizer-specific flags. 562set(COMPILER_RT_COMMON_CFLAGS ${SANITIZER_COMMON_CFLAGS}) 563set(COMPILER_RT_COMMON_LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS}) 564 565# We don't use the C++ standard library, so avoid including it by mistake. 566append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ SANITIZER_COMMON_CFLAGS) 567append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ SANITIZER_COMMON_LINK_FLAGS) 568 569# Remove -stdlib= which is unused when passing -nostdinc++... 570string(REGEX MATCHALL "-stdlib=[a-zA-Z+]*" stdlib_flag "${CMAKE_CXX_FLAGS}") 571string(REGEX REPLACE "-stdlib=[a-zA-Z+]*" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 572 573# ...we need it to build some runtimes and tests so readd it where appropriate. 574list(APPEND COMPILER_RT_COMMON_CFLAGS ${stdlib_flag}) 575list(APPEND COMPILER_RT_COMMON_LINK_FLAGS ${stdlib_flag}) 576 577# TODO: There's a lot of duplication across lib/*/tests/CMakeLists.txt files, 578# move some of the common flags to COMPILER_RT_UNITTEST_CFLAGS. 579 580# Unittests need access to C++ standard library. 581string(APPEND COMPILER_RT_TEST_COMPILER_CFLAGS " ${stdlib_flag}") 582 583# When cross-compiling, COMPILER_RT_TEST_COMPILER_CFLAGS help in compilation 584# and linking of unittests. 585string(REPLACE " " ";" COMPILER_RT_UNITTEST_CFLAGS "${COMPILER_RT_TEST_COMPILER_CFLAGS}") 586set(COMPILER_RT_UNITTEST_LINK_FLAGS ${COMPILER_RT_UNITTEST_CFLAGS}) 587 588if(COMPILER_RT_USE_LLVM_UNWINDER) 589 # We're linking directly against the libunwind that we're building so don't 590 # try to link in the toolchain's default libunwind which may be missing. 591 append_list_if(CXX_SUPPORTS_UNWINDLIB_NONE_FLAG --unwindlib=none COMPILER_RT_COMMON_LINK_FLAGS) 592 append_list_if(CXX_SUPPORTS_UNWINDLIB_NONE_FLAG --unwindlib=none COMPILER_RT_UNITTEST_LINK_FLAGS) 593 if (COMPILER_RT_ENABLE_STATIC_UNWINDER) 594 list(APPEND COMPILER_RT_UNWINDER_LINK_LIBS "$<TARGET_LINKER_FILE:unwind_static>") 595 else() 596 list(APPEND COMPILER_RT_UNWINDER_LINK_LIBS "$<TARGET_LINKER_FILE:$<IF:$<TARGET_EXISTS:unwind_shared>,unwind_shared,unwind_static>>") 597 endif() 598endif() 599 600if (COMPILER_RT_CXX_LIBRARY STREQUAL "libcxx") 601 # We are using the in-tree libc++ so avoid including the default one. 602 append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ COMPILER_RT_COMMON_CFLAGS) 603 append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ COMPILER_RT_COMMON_LINK_FLAGS) 604 # Use the in-tree libc++ through explicit include and library paths. 605 set(COMPILER_RT_CXX_CFLAGS "$<$<TARGET_EXISTS:cxx-headers>:$<IF:$<BOOL:${MSVC}>,/imsvc,-isystem>$<JOIN:$<TARGET_PROPERTY:cxx-headers,INTERFACE_INCLUDE_DIRECTORIES>,$<SEMICOLON>$<IF:$<BOOL:${MSVC}>,/imsvc,-isystem>>>") 606 if (COMPILER_RT_STATIC_CXX_LIBRARY) 607 set(COMPILER_RT_CXX_LINK_LIBS "$<TARGET_LINKER_FILE:cxx_static>") 608 else() 609 set(COMPILER_RT_CXX_LINK_LIBS "$<TARGET_LINKER_FILE:$<IF:$<TARGET_EXISTS:cxx_shared>,cxx_shared,cxx_static>>") 610 endif() 611elseif (COMPILER_RT_CXX_LIBRARY STREQUAL "none") 612 # We aren't using any C++ standard library so avoid including the default one. 613 append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ COMPILER_RT_COMMON_CFLAGS) 614 append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ COMPILER_RT_COMMON_LINK_FLAGS) 615else() 616 # Nothing to be done for `default`. 617endif() 618 619if (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libc++") 620 if (SANITIZER_CXX_ABI_INTREE) 621 # TODO: We don't need to add --unwindlib=none to SANITIZER_COMMON_LINK_FLAGS 622 # because we added -nodefaultlibs there earlier, and adding would result in 623 # a warning, but if we switch to -nostdlib++, we would need to add it here. 624 # append_list_if(CXX_SUPPORTS_UNWINDLIB_NONE_FLAG --unwindlib=none SANITIZER_COMMON_LINK_FLAGS) 625 if(SANITIZER_USE_STATIC_CXX_ABI) 626 if(TARGET libcxx-abi-static) 627 set(SANITIZER_CXX_ABI_LIBRARIES libcxx-abi-static) 628 endif() 629 else() 630 if(TARGET libcxx-abi-shared) 631 set(SANITIZER_CXX_ABI_LIBRARIES libcxx-abi-shared) 632 elseif(TARGET libcxx-abi-static) 633 set(SANITIZER_CXX_ABI_LIBRARIES libcxx-abi-static) 634 endif() 635 endif() 636 else() 637 append_list_if(COMPILER_RT_HAS_LIBCXX c++ SANITIZER_CXX_ABI_LIBRARIES) 638 endif() 639elseif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libcxxabi") 640 list(APPEND SANITIZER_CXX_ABI_LIBRARIES "c++abi") 641elseif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libstdc++") 642 append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ SANITIZER_CXX_ABI_LIBRARIES) 643endif() 644 645if (SANITIZER_TEST_CXX_LIBNAME STREQUAL "libc++") 646 if (SANITIZER_TEST_CXX_INTREE) 647 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:${MSVC}>,/imsvc,-isystem>>>") 648 if (SANITIZER_USE_STATIC_TEST_CXX) 649 list(APPEND SANITIZER_TEST_CXX_LIBRARIES "$<TARGET_LINKER_FILE:cxx_static>") 650 else() 651 list(APPEND SANITIZER_TEST_CXX_LIBRARIES "$<TARGET_LINKER_FILE:$<IF:$<TARGET_EXISTS:cxx_shared>,cxx_shared,cxx_static>>") 652 endif() 653 # We are using the in tree libc++ so avoid including the default one. 654 append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ COMPILER_RT_UNITTEST_CFLAGS) 655 append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ COMPILER_RT_UNITTEST_LINK_FLAGS) 656 else() 657 append_list_if(COMPILER_RT_HAS_LIBCXX -lc++ SANITIZER_TEST_CXX_LIBRARIES) 658 endif() 659elseif (SANITIZER_TEST_CXX_LIBNAME STREQUAL "libstdc++") 660 append_list_if(COMPILER_RT_HAS_LIBSTDCXX -lstdc++ SANITIZER_TEST_CXX_LIBRARIES) 661endif() 662 663# Unittests support. 664# FIXME: When compiler-rt is build using -DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON, then 665# The LLVM_THIRD_PARTY_DIR variable is not set. 666if (NOT LLVM_THIRD_PARTY_DIR) 667 set(LLVM_THIRD_PARTY_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../third-party") 668endif() 669 670set(COMPILER_RT_GTEST_PATH ${LLVM_THIRD_PARTY_DIR}/unittest/googletest) 671set(COMPILER_RT_GTEST_SOURCE ${COMPILER_RT_GTEST_PATH}/src/gtest-all.cc) 672set(COMPILER_RT_GTEST_CFLAGS 673 -DGTEST_NO_LLVM_SUPPORT=1 674 -DGTEST_HAS_RTTI=0 675 -I${COMPILER_RT_GTEST_PATH}/include 676 -I${COMPILER_RT_GTEST_PATH} 677) 678 679# Mocking support. 680set(COMPILER_RT_GMOCK_PATH ${LLVM_THIRD_PARTY_DIR}/unittest/googlemock) 681set(COMPILER_RT_GMOCK_SOURCE ${COMPILER_RT_GMOCK_PATH}/src/gmock-all.cc) 682set(COMPILER_RT_GMOCK_CFLAGS 683 -DGTEST_NO_LLVM_SUPPORT=1 684 -DGTEST_HAS_RTTI=0 685 -I${COMPILER_RT_GMOCK_PATH}/include 686 -I${COMPILER_RT_GMOCK_PATH} 687) 688 689if(COMPILER_RT_HAS_G_FLAG) 690 list(APPEND COMPILER_RT_UNITTEST_CFLAGS -g) 691endif() 692append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 COMPILER_RT_UNITTEST_CFLAGS) 693append_list_if(COMPILER_RT_HAS_WCOVERED_SWITCH_DEFAULT_FLAG -Wno-covered-switch-default COMPILER_RT_UNITTEST_CFLAGS) 694append_list_if(COMPILER_RT_HAS_WSUGGEST_OVERRIDE_FLAG -Wno-suggest-override COMPILER_RT_UNITTEST_CFLAGS) 695 696if(MSVC) 697 # gtest use a lot of stuff marked as deprecated on Windows. 698 list(APPEND COMPILER_RT_GTEST_CFLAGS -Wno-deprecated-declarations) 699endif() 700 701# Warnings to turn off for all libraries, not just sanitizers. 702append_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS) 703 704if (CMAKE_LINKER MATCHES "link.exe$") 705 # Silence MSVC linker warnings caused by empty object files. The 706 # sanitizer libraries intentionally use ifdefs that result in empty 707 # files, rather than skipping these files in the build system. 708 # Ideally, we would pass this flag only for the libraries that need 709 # it, but CMake doesn't seem to have a way to set linker flags for 710 # individual static libraries, so we enable the suppression flag for 711 # the whole compiler-rt project. 712 set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} /IGNORE:4221") 713endif() 714 715add_subdirectory(include) 716 717option(COMPILER_RT_USE_LIBCXX 718 "Enable compiler-rt to use libc++ from the source tree" ON) 719if(COMPILER_RT_USE_LIBCXX) 720 if(LLVM_ENABLE_PROJECTS_USED) 721 # Don't use libcxx if LLVM_ENABLE_PROJECTS does not enable it. 722 set(COMPILER_RT_LIBCXX_PATH ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR}) 723 set(COMPILER_RT_LIBCXXABI_PATH ${LLVM_EXTERNAL_LIBCXXABI_SOURCE_DIR}) 724 else() 725 foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxx 726 ${LLVM_MAIN_SRC_DIR}/runtimes/libcxx 727 ${LLVM_MAIN_SRC_DIR}/../libcxx 728 ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR}) 729 if(IS_DIRECTORY ${path}) 730 set(COMPILER_RT_LIBCXX_PATH ${path}) 731 break() 732 endif() 733 endforeach() 734 foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxxabi 735 ${LLVM_MAIN_SRC_DIR}/runtimes/libcxxabi 736 ${LLVM_MAIN_SRC_DIR}/../libcxxabi 737 ${LLVM_EXTERNAL_LIBCXXABI_SOURCE_DIR}) 738 if(IS_DIRECTORY ${path}) 739 set(COMPILER_RT_LIBCXXABI_PATH ${path}) 740 break() 741 endif() 742 endforeach() 743 endif() 744endif() 745 746set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld) 747if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD) 748 set(COMPILER_RT_HAS_LLD TRUE) 749else() 750 set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/../lld) 751 if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD) 752 set(COMPILER_RT_HAS_LLD TRUE) 753 endif() 754endif() 755 756if(ANDROID) 757 set(COMPILER_RT_HAS_LLD TRUE) 758 set(COMPILER_RT_TEST_USE_LLD TRUE) 759 append_list_if(COMPILER_RT_HAS_FUSE_LD_LLD_FLAG -fuse-ld=lld SANITIZER_COMMON_LINK_FLAGS) 760 append_list_if(COMPILER_RT_HAS_LLD -fuse-ld=lld COMPILER_RT_UNITTEST_LINK_FLAGS) 761endif() 762pythonize_bool(COMPILER_RT_HAS_LLD) 763pythonize_bool(COMPILER_RT_TEST_USE_LLD) 764 765add_subdirectory(lib) 766 767if(COMPILER_RT_INCLUDE_TESTS) 768 add_subdirectory(unittests) 769 add_subdirectory(test) 770 # Don't build llvm-lit for runtimes-build, it will clean up map_config. 771 if (COMPILER_RT_STANDALONE_BUILD AND NOT LLVM_RUNTIMES_BUILD) 772 # If we have a valid source tree, generate llvm-lit into the bin directory. 773 # The user can still choose to have the check targets *use* a different lit 774 # by specifying -DLLVM_EXTERNAL_LIT, but we generate it regardless. 775 if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/llvm-lit) 776 # Needed for lit support in standalone builds. 777 include(AddLLVM) 778 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/llvm-lit ${CMAKE_CURRENT_BINARY_DIR}/llvm-lit) 779 elseif(NOT EXISTS ${LLVM_EXTERNAL_LIT}) 780 message(WARNING "Could not find LLVM source directory and LLVM_EXTERNAL_LIT does not" 781 "point to a valid file. You will not be able to run tests.") 782 endif() 783 endif() 784endif() 785 786add_subdirectory(tools) 787