1# See www/CMake.html for instructions on how to build libcxxabi with CMake. 2 3#=============================================================================== 4# Setup Project 5#=============================================================================== 6 7cmake_minimum_required(VERSION 3.20.0) 8 9set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") 10 11# Add path for custom modules 12list(INSERT CMAKE_MODULE_PATH 0 13 "${CMAKE_CURRENT_SOURCE_DIR}/cmake" 14 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" 15 "${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules" 16 "${LLVM_COMMON_CMAKE_UTILS}" 17 "${LLVM_COMMON_CMAKE_UTILS}/Modules" 18 ) 19 20set(CMAKE_FOLDER "libc++") 21 22set(LIBCXXABI_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 23set(LIBCXXABI_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 24set(LIBCXXABI_LIBCXX_PATH "${CMAKE_CURRENT_LIST_DIR}/../libcxx" CACHE PATH 25 "Specify path to libc++ source.") 26 27include(GNUInstallDirs) 28 29# Require out of source build. 30include(MacroEnsureOutOfSourceBuild) 31MACRO_ENSURE_OUT_OF_SOURCE_BUILD( 32 "${PROJECT_NAME} requires an out of source build. Please create a separate 33 build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there." 34 ) 35 36#=============================================================================== 37# Setup CMake Options 38#=============================================================================== 39include(CMakeDependentOption) 40include(HandleCompilerRT) 41 42# Define options. 43option(LIBCXXABI_ENABLE_EXCEPTIONS 44 "Provide support for exceptions in the runtime. 45 When disabled, libc++abi does not support stack unwinding and other exceptions-related features." ON) 46option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON) 47option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF) 48option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF) 49option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF) 50option(LIBCXXABI_ENABLE_STATIC_UNWINDER "Statically link the LLVM unwinder." OFF) 51option(LIBCXXABI_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF) 52option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON) 53option(LIBCXXABI_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF) 54option(LIBCXXABI_HAS_WIN32_THREAD_API "Ignore auto-detection and force use of win32 thread API" OFF) 55option(LIBCXXABI_HAS_EXTERNAL_THREAD_API 56 "Build libc++abi with an externalized threading API. 57 This option may only be set to ON when LIBCXXABI_ENABLE_THREADS=ON." OFF) 58option(LIBCXXABI_ENABLE_FORGIVING_DYNAMIC_CAST 59"Make dynamic_cast more forgiving when type_info's mistakenly have hidden \ 60visibility, and thus multiple type_infos can exist for a single type. \ 61When the dynamic_cast would normally fail, this option will cause the \ 62library to try comparing the type_info names to see if they are equal \ 63instead." OFF) 64 65option(LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS 66 "Build libc++abi with definitions for operator new/delete. These are normally 67 defined in libc++abi, but it is also possible to define them in libc++, in 68 which case the definition in libc++abi should be turned off." ON) 69option(LIBCXXABI_BUILD_32_BITS "Build 32 bit multilib libc++abi. This option is not supported anymore when building the runtimes. Please specify a full triple instead." ${LLVM_BUILD_32_BITS}) 70if (LIBCXXABI_BUILD_32_BITS) 71 message(FATAL_ERROR "LIBCXXABI_BUILD_32_BITS is not supported anymore when building the runtimes, please specify a full triple instead.") 72endif() 73 74option(LIBCXXABI_INCLUDE_TESTS "Generate build targets for the libc++abi unit tests." ${LLVM_INCLUDE_TESTS}) 75set(LIBCXXABI_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING 76 "Define suffix of library directory name (32/64)") 77option(LIBCXXABI_INSTALL_HEADERS "Install the libc++abi headers." ON) 78option(LIBCXXABI_INSTALL_LIBRARY "Install the libc++abi library." ON) 79 80set(LIBCXXABI_SHARED_OUTPUT_NAME "c++abi" CACHE STRING "Output name for the shared libc++abi runtime library.") 81set(LIBCXXABI_STATIC_OUTPUT_NAME "c++abi" CACHE STRING "Output name for the static libc++abi runtime library.") 82 83set(LIBCXXABI_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE STRING "Path to install the libc++abi headers at.") 84 85if(LLVM_LIBRARY_OUTPUT_INTDIR) 86 set(LIBCXXABI_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1") 87else() 88 set(LIBCXXABI_GENERATED_INCLUDE_DIR "${CMAKE_BINARY_DIR}/include/c++/v1") 89endif() 90 91set(LIBCXXABI_LIBCXX_LIBRARY_PATH "" CACHE PATH "The path to libc++ library.") 92set(LIBCXXABI_LIBRARY_VERSION "1.0" CACHE STRING 93"Version of libc++abi. This will be reflected in the name of the shared \ 94library produced. For example, -DLIBCXXABI_LIBRARY_VERSION=x.y will \ 95result in the library being named libc++abi.x.y.dylib, along with the \ 96usual symlinks pointing to that.") 97 98# Default to building a shared library so that the default options still test 99# the libc++abi that is being built. The problem with testing a static libc++abi 100# is that libc++ will prefer a dynamic libc++abi from the system over a static 101# libc++abi from the output directory. 102option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON) 103option(LIBCXXABI_ENABLE_STATIC "Build libc++abi as a static library." ON) 104 105cmake_dependent_option(LIBCXXABI_INSTALL_STATIC_LIBRARY 106 "Install the static libc++abi library." ON 107 "LIBCXXABI_ENABLE_STATIC;LIBCXXABI_INSTALL_LIBRARY" OFF) 108cmake_dependent_option(LIBCXXABI_INSTALL_SHARED_LIBRARY 109 "Install the shared libc++abi library." ON 110 "LIBCXXABI_ENABLE_SHARED;LIBCXXABI_INSTALL_LIBRARY" OFF) 111 112cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY 113 "Statically link the LLVM unwinder to static library" ON 114 "LIBCXXABI_ENABLE_STATIC_UNWINDER" OFF) 115cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY 116 "Statically link the LLVM unwinder to shared library" ON 117 "LIBCXXABI_ENABLE_STATIC_UNWINDER" OFF) 118 119option(LIBCXXABI_BAREMETAL "Build libc++abi for baremetal targets." OFF) 120# The default terminate handler attempts to demangle uncaught exceptions, which 121# causes extra I/O and demangling code to be pulled in. 122option(LIBCXXABI_SILENT_TERMINATE "Set this to make the terminate handler default to a silent alternative" OFF) 123option(LIBCXXABI_NON_DEMANGLING_TERMINATE "Set this to make the terminate handler 124avoid demangling" OFF) 125 126if (NOT LIBCXXABI_ENABLE_SHARED AND NOT LIBCXXABI_ENABLE_STATIC) 127 message(FATAL_ERROR "libc++abi must be built as either a shared or static library.") 128endif() 129 130# TODO: Remove this, which shouldn't be necessary since we know we're being built 131# side-by-side with libc++. 132set(LIBCXXABI_LIBCXX_INCLUDES "" CACHE PATH 133 "Specify path to libc++ includes.") 134 135set(LIBCXXABI_HERMETIC_STATIC_LIBRARY_DEFAULT OFF) 136if (WIN32) 137 set(LIBCXXABI_HERMETIC_STATIC_LIBRARY_DEFAULT ON) 138endif() 139option(LIBCXXABI_HERMETIC_STATIC_LIBRARY 140 "Do not export any symbols from the static library." ${LIBCXXABI_HERMETIC_STATIC_LIBRARY_DEFAULT}) 141 142if(MINGW) 143 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-mingw.cfg.in") 144elseif(WIN32) # clang-cl 145 if (LIBCXXABI_ENABLE_SHARED) 146 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-shared-clangcl.cfg.in") 147 else() 148 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-static-clangcl.cfg.in") 149 endif() 150else() 151 if (LIBCXXABI_ENABLE_SHARED) 152 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-shared.cfg.in") 153 else() 154 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-static.cfg.in") 155 endif() 156endif() 157set(LIBCXXABI_TEST_CONFIG "${LIBCXXABI_DEFAULT_TEST_CONFIG}" CACHE STRING 158 "The path to the Lit testing configuration to use when running the tests. 159 If a relative path is provided, it is assumed to be relative to '<monorepo>/libcxxabi/test/configs'.") 160if (NOT IS_ABSOLUTE "${LIBCXXABI_TEST_CONFIG}") 161 set(LIBCXXABI_TEST_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/test/configs/${LIBCXXABI_TEST_CONFIG}") 162endif() 163message(STATUS "Using libc++abi testing configuration: ${LIBCXXABI_TEST_CONFIG}") 164set(LIBCXXABI_TEST_PARAMS "" CACHE STRING 165 "A list of parameters to run the Lit test suite with.") 166 167#=============================================================================== 168# Configure System 169#=============================================================================== 170 171# Add path for custom modules 172set(CMAKE_MODULE_PATH 173 "${CMAKE_CURRENT_SOURCE_DIR}/cmake" 174 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" 175 ${CMAKE_MODULE_PATH} 176 ) 177 178set(LIBCXXABI_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE STRING 179 "Path where built libc++abi runtime libraries should be installed.") 180 181if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 182 set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR}) 183 set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}) 184 set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE STRING 185 "Path where built libc++abi libraries should be installed.") 186 if(LIBCXX_LIBDIR_SUBDIR) 187 string(APPEND LIBCXXABI_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR}) 188 string(APPEND LIBCXXABI_INSTALL_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR}) 189 endif() 190else() 191 if(LLVM_LIBRARY_OUTPUT_INTDIR) 192 set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR}) 193 set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}) 194 else() 195 set(LIBCXXABI_HEADER_DIR ${CMAKE_BINARY_DIR}) 196 set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX}) 197 endif() 198 set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX} CACHE STRING 199 "Path where built libc++abi libraries should be installed.") 200endif() 201 202set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR}) 203set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR}) 204set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR}) 205 206# By default, libcxx and libcxxabi share a library directory. 207if (NOT LIBCXXABI_LIBCXX_LIBRARY_PATH) 208 set(LIBCXXABI_LIBCXX_LIBRARY_PATH "${LIBCXXABI_LIBRARY_DIR}" CACHE PATH 209 "The path to libc++ library." FORCE) 210endif() 211 212# Declare libc++abi configuration variables. 213# They are intended for use as follows: 214# LIBCXXABI_C_FLAGS: General flags for both the c++ compiler and linker. 215# LIBCXXABI_CXX_FLAGS: General flags for both the c++ compiler and linker. 216# LIBCXXABI_COMPILE_FLAGS: Compile only flags. 217# LIBCXXABI_LINK_FLAGS: Linker only flags. 218# LIBCXXABI_LIBRARIES: libraries libc++abi is linked to. 219 220set(LIBCXXABI_C_FLAGS "") 221set(LIBCXXABI_CXX_FLAGS "") 222set(LIBCXXABI_COMPILE_FLAGS "") 223set(LIBCXXABI_LINK_FLAGS "") 224set(LIBCXXABI_LIBRARIES "") 225set(LIBCXXABI_ADDITIONAL_COMPILE_FLAGS "" CACHE STRING 226 "Additional Compile only flags which can be provided in cache") 227set(LIBCXXABI_ADDITIONAL_LIBRARIES "" CACHE STRING 228 "Additional libraries libc++abi is linked to which can be provided in cache") 229 230# Include macros for adding and removing libc++abi flags. 231include(HandleLibcxxabiFlags) 232 233#=============================================================================== 234# Setup Compiler Flags 235#=============================================================================== 236 237# Configure target flags 238if (${CMAKE_SYSTEM_NAME} MATCHES "AIX") 239 add_flags_if_supported("-mdefault-visibility-export-mapping=explicit") 240 set(CMAKE_AIX_EXPORT_ALL_SYMBOLS OFF) 241endif() 242add_compile_flags("${LIBCXXABI_ADDITIONAL_COMPILE_FLAGS}") 243add_library_flags("${LIBCXXABI_ADDITIONAL_LIBRARIES}") 244 245# Configure compiler. Must happen after setting the target flags. 246include(config-ix) 247 248if (CXX_SUPPORTS_NOSTDINCXX_FLAG) 249 list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++) 250 # cmake 3.14 and above remove system include paths that are explicitly 251 # passed on the command line. We build with -nostdinc++ and explicitly add 252 # just the libcxx system include paths with -I on the command line. 253 # Setting CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES effectively prevents cmake 254 # from removing these. 255 # See: https://gitlab.kitware.com/cmake/cmake/issues/19227 256 set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES "") 257 # Remove -stdlib flags to prevent them from causing an unused flag warning. 258 string(REPLACE "--stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 259 string(REPLACE "--stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 260 string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 261 string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") 262endif() 263 264# Let the library headers know they are currently being used to build the 265# library. 266add_definitions(-D_LIBCXXABI_BUILDING_LIBRARY) 267 268# libcxxabi needs to, for various reasons, include the libcpp headers as if 269# it is being built as part of libcxx. 270add_definitions(-D_LIBCPP_BUILDING_LIBRARY) 271 272# Get feature flags. 273add_compile_flags_if_supported(-fstrict-aliasing) 274 275# Exceptions 276if (LIBCXXABI_ENABLE_EXCEPTIONS) 277 # Catches C++ exceptions only and tells the compiler to assume that extern C 278 # functions never throw a C++ exception. 279 add_compile_flags_if_supported(-EHsc) 280 # Do we really need to be run through the C compiler ? 281 add_c_compile_flags_if_supported(-funwind-tables) 282else() 283 add_compile_flags_if_supported(-fno-exceptions) 284 add_compile_flags_if_supported(-EHs-) 285 add_compile_flags_if_supported(-EHa-) 286endif() 287 288# Assert 289string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE) 290if (LIBCXXABI_ENABLE_ASSERTIONS) 291 # MSVC doesn't like _DEBUG on release builds. See PR 4379. 292 if (NOT MSVC) 293 list(APPEND LIBCXXABI_COMPILE_FLAGS -D_DEBUG) 294 endif() 295 # On Release builds cmake automatically defines NDEBUG, so we 296 # explicitly undefine it: 297 if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") 298 list(APPEND LIBCXXABI_COMPILE_FLAGS -UNDEBUG) 299 endif() 300else() 301 if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE") 302 list(APPEND LIBCXXABI_COMPILE_FLAGS -DNDEBUG) 303 endif() 304endif() 305 306# Threading 307if (NOT LIBCXXABI_ENABLE_THREADS) 308 if (LIBCXXABI_HAS_PTHREAD_API) 309 message(FATAL_ERROR "LIBCXXABI_HAS_PTHREAD_API can only" 310 " be set to ON when LIBCXXABI_ENABLE_THREADS" 311 " is also set to ON.") 312 endif() 313 if (LIBCXXABI_HAS_WIN32_THREAD_API) 314 message(FATAL_ERROR "LIBCXXABI_HAS_WIN32_THREAD_API can only" 315 " be set to ON when LIBCXXABI_ENABLE_THREADS" 316 " is also set to ON.") 317 endif() 318 if (LIBCXXABI_HAS_EXTERNAL_THREAD_API) 319 message(FATAL_ERROR "LIBCXXABI_HAS_EXTERNAL_THREAD_API can only" 320 " be set to ON when LIBCXXABI_ENABLE_THREADS" 321 " is also set to ON.") 322 endif() 323 add_definitions(-D_LIBCXXABI_HAS_NO_THREADS) 324endif() 325 326if (LIBCXXABI_HAS_EXTERNAL_THREAD_API) 327 if (LIBCXXABI_HAS_PTHREAD_API) 328 message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API" 329 " and LIBCXXABI_HAS_PTHREAD_API cannot be both" 330 " set to ON at the same time.") 331 endif() 332 if (LIBCXXABI_HAS_WIN32_THREAD_API) 333 message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API" 334 " and LIBCXXABI_HAS_WIN32_THREAD_API cannot be both" 335 " set to ON at the same time.") 336 endif() 337endif() 338 339if (LIBCXXABI_HAS_PTHREAD_API) 340 if (LIBCXXABI_HAS_WIN32_THREAD_API) 341 message(FATAL_ERROR "The options LIBCXXABI_HAS_PTHREAD_API" 342 "and LIBCXXABI_HAS_WIN32_THREAD_API cannot be both" 343 "set to ON at the same time.") 344 endif() 345endif() 346 347if (LLVM_ENABLE_MODULES) 348 # Ignore that the rest of the modules flags are now unused. 349 add_compile_flags_if_supported(-Wno-unused-command-line-argument) 350 add_compile_flags(-fno-modules) 351endif() 352 353set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS OFF) 354if ((NOT LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS) OR MINGW) 355 set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS ON) 356endif() 357 358if (LIBCXXABI_HAS_UNDEFINED_SYMBOLS) 359 # Need to allow unresolved symbols if this is to work with shared library builds 360 if (APPLE) 361 list(APPEND LIBCXXABI_LINK_FLAGS "-undefined dynamic_lookup") 362 else() 363 # Relax this restriction from HandleLLVMOptions 364 string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}") 365 endif() 366endif() 367 368if (LIBCXXABI_HAS_PTHREAD_API) 369 add_definitions(-D_LIBCPP_HAS_THREAD_API_PTHREAD) 370endif() 371 372if (LIBCXXABI_HAS_WIN32_THREAD_API) 373 add_definitions(-D_LIBCPP_HAS_THREAD_API_WIN32) 374endif() 375 376if (LIBCXXABI_HAS_EXTERNAL_THREAD_API) 377 add_definitions(-D_LIBCPP_HAS_THREAD_API_EXTERNAL) 378endif() 379 380if (MSVC) 381 add_definitions(-D_CRT_SECURE_NO_WARNINGS) 382endif() 383 384if (LIBCXXABI_SILENT_TERMINATE) 385 add_definitions(-DLIBCXXABI_SILENT_TERMINATE) 386endif() 387 388if (LIBCXXABI_NON_DEMANGLING_TERMINATE) 389 add_definitions(-DLIBCXXABI_NON_DEMANGLING_TERMINATE) 390endif() 391 392if (LIBCXXABI_BAREMETAL) 393 add_definitions(-DLIBCXXABI_BAREMETAL) 394endif() 395 396if (C_SUPPORTS_COMMENT_LIB_PRAGMA) 397 if (LIBCXXABI_HAS_PTHREAD_LIB) 398 add_definitions(-D_LIBCXXABI_LINK_PTHREAD_LIB) 399 endif() 400endif() 401 402string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}") 403set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FLAGS}") 404set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBCXXABI_C_FLAGS}") 405 406# On AIX, avoid picking up VMX extensions(i.e. vec_malloc) which would change 407# the default alignment of the allocators here. 408if (UNIX AND ${CMAKE_SYSTEM_NAME} MATCHES "AIX") 409 add_definitions("-D_XOPEN_SOURCE=700") 410endif() 411 412#=============================================================================== 413# Setup Source Code 414#=============================================================================== 415 416set(LIBCXXABI_LIBUNWIND_INCLUDES "${LIBCXXABI_LIBUNWIND_INCLUDES}" CACHE PATH 417 "Specify path to libunwind includes." FORCE) 418set(LIBCXXABI_LIBUNWIND_PATH "${LIBCXXABI_LIBUNWIND_PATH}" CACHE PATH 419 "Specify path to libunwind source." FORCE) 420 421if (LIBCXXABI_USE_LLVM_UNWINDER OR LLVM_NATIVE_ARCH MATCHES ARM) 422 find_path(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL libunwind.h 423 PATHS ${LIBCXXABI_LIBUNWIND_INCLUDES} 424 ${LIBCXXABI_LIBUNWIND_PATH}/include 425 ${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBUNWIND_INCLUDES} 426 ${LLVM_MAIN_SRC_DIR}/projects/libunwind/include 427 ${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/include 428 ${LLVM_MAIN_SRC_DIR}/../libunwind/include 429 NO_DEFAULT_PATH 430 NO_CMAKE_FIND_ROOT_PATH 431 ) 432 433 if (LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND") 434 set(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL "") 435 endif() 436endif() 437 438if (NOT "${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}" STREQUAL "") 439 include_directories("${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}") 440endif() 441 442# Add source code. This also contains all of the logic for deciding linker flags 443# soname, etc... 444add_subdirectory(include) 445add_subdirectory(src) 446 447if (LIBCXXABI_INCLUDE_TESTS) 448 add_subdirectory(test) 449 add_subdirectory(fuzz) 450endif() 451