1 # See www/CMake.html for instructions on how to build libcxxabi with CMake.
3 #===============================================================================
5 #===============================================================================
7 cmake_minimum_required(VERSION 3.20.0)
9 set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
11 # Add path for custom modules
12 list(INSERT CMAKE_MODULE_PATH 0
13 "${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"
20 set(CMAKE_FOLDER "libc++")
22 set(LIBCXXABI_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
23 set(LIBCXXABI_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
24 set(LIBCXXABI_LIBCXX_PATH "${CMAKE_CURRENT_LIST_DIR}/../libcxx" CACHE PATH
25 "Specify path to libc++ source.")
27 include(GNUInstallDirs)
29 # Require out of source build.
30 include(MacroEnsureOutOfSourceBuild)
31 MACRO_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."
36 #===============================================================================
38 #===============================================================================
39 include(CMakeDependentOption)
40 include(HandleCompilerRT)
43 option(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)
46 option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
47 option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF)
48 option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
49 option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
50 option(LIBCXXABI_ENABLE_STATIC_UNWINDER "Statically link the LLVM unwinder." OFF)
51 option(LIBCXXABI_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
52 option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON)
53 option(LIBCXXABI_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF)
54 option(LIBCXXABI_HAS_WIN32_THREAD_API "Ignore auto-detection and force use of win32 thread API" OFF)
55 option(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)
58 option(LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY
59 "Build libc++abi with an externalized threading library.
60 This option may only be set to ON when LIBCXXABI_ENABLE_THREADS=ON" OFF)
61 option(LIBCXXABI_ENABLE_FORGIVING_DYNAMIC_CAST
62 "Make dynamic_cast more forgiving when type_info's mistakenly have hidden \
63 visibility, and thus multiple type_infos can exist for a single type. \
64 When the dynamic_cast would normally fail, this option will cause the \
65 library to try comparing the type_info names to see if they are equal \
68 option(LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS
69 "Build libc++abi with definitions for operator new/delete. These are normally
70 defined in libc++abi, but it is also possible to define them in libc++, in
71 which case the definition in libc++abi should be turned off." ON)
72 option(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})
73 if (LIBCXXABI_BUILD_32_BITS)
74 message(FATAL_ERROR "LIBCXXABI_BUILD_32_BITS is not supported anymore when building the runtimes, please specify a full triple instead.")
77 option(LIBCXXABI_INCLUDE_TESTS "Generate build targets for the libc++abi unit tests." ${LLVM_INCLUDE_TESTS})
78 set(LIBCXXABI_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
79 "Define suffix of library directory name (32/64)")
80 option(LIBCXXABI_INSTALL_HEADERS "Install the libc++abi headers." ON)
81 option(LIBCXXABI_INSTALL_LIBRARY "Install the libc++abi library." ON)
83 set(LIBCXXABI_SHARED_OUTPUT_NAME "c++abi" CACHE STRING "Output name for the shared libc++abi runtime library.")
84 set(LIBCXXABI_STATIC_OUTPUT_NAME "c++abi" CACHE STRING "Output name for the static libc++abi runtime library.")
86 set(LIBCXXABI_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH "Path to install the libc++abi headers at.")
88 if(LLVM_LIBRARY_OUTPUT_INTDIR)
89 set(LIBCXXABI_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
91 set(LIBCXXABI_GENERATED_INCLUDE_DIR "${CMAKE_BINARY_DIR}/include/c++/v1")
94 # TODO: Remove this after branching for LLVM 15
95 if(LIBCXXABI_SYSROOT OR LIBCXXABI_TARGET_TRIPLE OR LIBCXXABI_GCC_TOOLCHAIN)
96 message(WARNING "LIBCXXABI_SYSROOT, LIBCXXABI_TARGET_TRIPLE and LIBCXXABI_GCC_TOOLCHAIN are not supported anymore, please use the native CMake equivalents instead")
99 set(LIBCXXABI_LIBCXX_LIBRARY_PATH "" CACHE PATH "The path to libc++ library.")
100 set(LIBCXXABI_LIBRARY_VERSION "1.0" CACHE STRING
101 "Version of libc++abi. This will be reflected in the name of the shared \
102 library produced. For example, -DLIBCXXABI_LIBRARY_VERSION=x.y will \
103 result in the library being named libc++abi.x.y.dylib, along with the \
104 usual symlinks pointing to that.")
106 # Default to building a shared library so that the default options still test
107 # the libc++abi that is being built. The problem with testing a static libc++abi
108 # is that libc++ will prefer a dynamic libc++abi from the system over a static
109 # libc++abi from the output directory.
110 option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON)
111 option(LIBCXXABI_ENABLE_STATIC "Build libc++abi as a static library." ON)
113 cmake_dependent_option(LIBCXXABI_INSTALL_STATIC_LIBRARY
114 "Install the static libc++abi library." ON
115 "LIBCXXABI_ENABLE_STATIC;LIBCXXABI_INSTALL_LIBRARY" OFF)
116 cmake_dependent_option(LIBCXXABI_INSTALL_SHARED_LIBRARY
117 "Install the shared libc++abi library." ON
118 "LIBCXXABI_ENABLE_SHARED;LIBCXXABI_INSTALL_LIBRARY" OFF)
120 cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY
121 "Statically link the LLVM unwinder to static library" ON
122 "LIBCXXABI_ENABLE_STATIC_UNWINDER" OFF)
123 cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY
124 "Statically link the LLVM unwinder to shared library" ON
125 "LIBCXXABI_ENABLE_STATIC_UNWINDER" OFF)
127 option(LIBCXXABI_BAREMETAL "Build libc++abi for baremetal targets." OFF)
128 # The default terminate handler attempts to demangle uncaught exceptions, which
129 # causes extra I/O and demangling code to be pulled in.
130 option(LIBCXXABI_SILENT_TERMINATE "Set this to make the terminate handler default to a silent alternative" OFF)
131 option(LIBCXXABI_NON_DEMANGLING_TERMINATE "Set this to make the terminate handler
132 avoid demangling" OFF)
134 if (NOT LIBCXXABI_ENABLE_SHARED AND NOT LIBCXXABI_ENABLE_STATIC)
135 message(FATAL_ERROR "libc++abi must be built as either a shared or static library.")
138 # TODO: Remove this, which shouldn't be necessary since we know we're being built
139 # side-by-side with libc++.
140 set(LIBCXXABI_LIBCXX_INCLUDES "" CACHE PATH
141 "Specify path to libc++ includes.")
143 set(LIBCXXABI_HERMETIC_STATIC_LIBRARY_DEFAULT OFF)
145 set(LIBCXXABI_HERMETIC_STATIC_LIBRARY_DEFAULT ON)
147 option(LIBCXXABI_HERMETIC_STATIC_LIBRARY
148 "Do not export any symbols from the static library." ${LIBCXXABI_HERMETIC_STATIC_LIBRARY_DEFAULT})
150 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
151 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-shared-gcc.cfg.in")
153 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-mingw.cfg.in")
154 elseif(WIN32) # clang-cl
155 if (LIBCXXABI_ENABLE_SHARED)
156 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-shared-clangcl.cfg.in")
158 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-static-clangcl.cfg.in")
161 if (LIBCXXABI_ENABLE_SHARED)
162 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-shared.cfg.in")
164 set(LIBCXXABI_DEFAULT_TEST_CONFIG "llvm-libc++abi-static.cfg.in")
167 set(LIBCXXABI_TEST_CONFIG "${LIBCXXABI_DEFAULT_TEST_CONFIG}" CACHE STRING
168 "The path to the Lit testing configuration to use when running the tests.
169 If a relative path is provided, it is assumed to be relative to '<monorepo>/libcxxabi/test/configs'.")
170 if (NOT IS_ABSOLUTE "${LIBCXXABI_TEST_CONFIG}")
171 set(LIBCXXABI_TEST_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/test/configs/${LIBCXXABI_TEST_CONFIG}")
173 message(STATUS "Using libc++abi testing configuration: ${LIBCXXABI_TEST_CONFIG}")
174 set(LIBCXXABI_TEST_PARAMS "" CACHE STRING
175 "A list of parameters to run the Lit test suite with.")
177 #===============================================================================
179 #===============================================================================
181 # Add path for custom modules
182 set(CMAKE_MODULE_PATH
183 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
184 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
188 set(LIBCXXABI_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
189 "Path where built libc++abi runtime libraries should be installed.")
191 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
192 set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR})
193 set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
194 set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
195 "Path where built libc++abi libraries should be installed.")
196 if(LIBCXX_LIBDIR_SUBDIR)
197 string(APPEND LIBCXXABI_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
198 string(APPEND LIBCXXABI_INSTALL_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
201 if(LLVM_LIBRARY_OUTPUT_INTDIR)
202 set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR})
203 set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
205 set(LIBCXXABI_HEADER_DIR ${CMAKE_BINARY_DIR})
206 set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
208 set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
209 "Path where built libc++abi libraries should be installed.")
212 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
213 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
214 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
216 # By default, libcxx and libcxxabi share a library directory.
217 if (NOT LIBCXXABI_LIBCXX_LIBRARY_PATH)
218 set(LIBCXXABI_LIBCXX_LIBRARY_PATH "${LIBCXXABI_LIBRARY_DIR}" CACHE PATH
219 "The path to libc++ library." FORCE)
222 # Declare libc++abi configuration variables.
223 # They are intended for use as follows:
224 # LIBCXXABI_C_FLAGS: General flags for both the c++ compiler and linker.
225 # LIBCXXABI_CXX_FLAGS: General flags for both the c++ compiler and linker.
226 # LIBCXXABI_COMPILE_FLAGS: Compile only flags.
227 # LIBCXXABI_LINK_FLAGS: Linker only flags.
228 # LIBCXXABI_LIBRARIES: libraries libc++abi is linked to.
230 set(LIBCXXABI_C_FLAGS "")
231 set(LIBCXXABI_CXX_FLAGS "")
232 set(LIBCXXABI_COMPILE_FLAGS "")
233 set(LIBCXXABI_LINK_FLAGS "")
234 set(LIBCXXABI_LIBRARIES "")
235 set(LIBCXXABI_ADDITIONAL_COMPILE_FLAGS "" CACHE STRING
236 "Additional Compile only flags which can be provided in cache")
237 set(LIBCXXABI_ADDITIONAL_LIBRARIES "" CACHE STRING
238 "Additional libraries libc++abi is linked to which can be provided in cache")
240 # Include macros for adding and removing libc++abi flags.
241 include(HandleLibcxxabiFlags)
243 #===============================================================================
244 # Setup Compiler Flags
245 #===============================================================================
247 # Configure target flags
248 if (${CMAKE_SYSTEM_NAME} MATCHES "AIX")
249 add_flags_if_supported("-mdefault-visibility-export-mapping=explicit")
250 set(CMAKE_AIX_EXPORT_ALL_SYMBOLS OFF)
252 add_compile_flags("${LIBCXXABI_ADDITIONAL_COMPILE_FLAGS}")
253 add_library_flags("${LIBCXXABI_ADDITIONAL_LIBRARIES}")
255 # Configure compiler. Must happen after setting the target flags.
258 if (CXX_SUPPORTS_NOSTDINCXX_FLAG)
259 list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++)
260 # cmake 3.14 and above remove system include paths that are explicitly
261 # passed on the command line. We build with -nostdinc++ and explicitly add
262 # just the libcxx system include paths with -I on the command line.
263 # Setting CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES effectively prevents cmake
264 # from removing these.
265 # See: https://gitlab.kitware.com/cmake/cmake/issues/19227
266 set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES "")
267 # Remove -stdlib flags to prevent them from causing an unused flag warning.
268 string(REPLACE "--stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
269 string(REPLACE "--stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
270 string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
271 string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
274 # Let the library headers know they are currently being used to build the
276 add_definitions(-D_LIBCXXABI_BUILDING_LIBRARY)
278 # libcxxabi needs to, for various reasons, include the libcpp headers as if
279 # it is being built as part of libcxx.
280 add_definitions(-D_LIBCPP_BUILDING_LIBRARY)
283 add_compile_flags_if_supported(-fstrict-aliasing)
286 if (LIBCXXABI_ENABLE_EXCEPTIONS)
287 # Catches C++ exceptions only and tells the compiler to assume that extern C
288 # functions never throw a C++ exception.
289 add_compile_flags_if_supported(-EHsc)
290 # Do we really need to be run through the C compiler ?
291 add_c_compile_flags_if_supported(-funwind-tables)
293 add_compile_flags_if_supported(-fno-exceptions)
294 add_compile_flags_if_supported(-EHs-)
295 add_compile_flags_if_supported(-EHa-)
299 string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
300 if (LIBCXXABI_ENABLE_ASSERTIONS)
301 # MSVC doesn't like _DEBUG on release builds. See PR 4379.
303 list(APPEND LIBCXXABI_COMPILE_FLAGS -D_DEBUG)
305 # On Release builds cmake automatically defines NDEBUG, so we
306 # explicitly undefine it:
307 if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
308 list(APPEND LIBCXXABI_COMPILE_FLAGS -UNDEBUG)
311 if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
312 list(APPEND LIBCXXABI_COMPILE_FLAGS -DNDEBUG)
317 if (NOT LIBCXXABI_ENABLE_THREADS)
318 if (LIBCXXABI_HAS_PTHREAD_API)
319 message(FATAL_ERROR "LIBCXXABI_HAS_PTHREAD_API can only"
320 " be set to ON when LIBCXXABI_ENABLE_THREADS"
321 " is also set to ON.")
323 if (LIBCXXABI_HAS_WIN32_THREAD_API)
324 message(FATAL_ERROR "LIBCXXABI_HAS_WIN32_THREAD_API can only"
325 " be set to ON when LIBCXXABI_ENABLE_THREADS"
326 " is also set to ON.")
328 if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
329 message(FATAL_ERROR "LIBCXXABI_HAS_EXTERNAL_THREAD_API can only"
330 " be set to ON when LIBCXXABI_ENABLE_THREADS"
331 " is also set to ON.")
333 if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
334 message(FATAL_ERROR "LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY can only"
335 " be set to ON when LIBCXXABI_ENABLE_THREADS"
336 " is also set to ON.")
338 add_definitions(-D_LIBCXXABI_HAS_NO_THREADS)
341 if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
342 if (LIBCXXABI_HAS_PTHREAD_API)
343 message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API"
344 " and LIBCXXABI_HAS_PTHREAD_API cannot be both"
345 " set to ON at the same time.")
347 if (LIBCXXABI_HAS_WIN32_THREAD_API)
348 message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API"
349 " and LIBCXXABI_HAS_WIN32_THREAD_API cannot be both"
350 " set to ON at the same time.")
352 if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
353 message(FATAL_ERROR "The options LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY"
354 " and LIBCXXABI_HAS_EXTERNAL_THREAD_API cannot be both"
355 " set to ON at the same time.")
359 if (LIBCXXABI_HAS_PTHREAD_API)
360 if (LIBCXXABI_HAS_WIN32_THREAD_API)
361 message(FATAL_ERROR "The options LIBCXXABI_HAS_PTHREAD_API"
362 "and LIBCXXABI_HAS_WIN32_THREAD_API cannot be both"
363 "set to ON at the same time.")
367 if (LLVM_ENABLE_MODULES)
368 # Ignore that the rest of the modules flags are now unused.
369 add_compile_flags_if_supported(-Wno-unused-command-line-argument)
370 add_compile_flags(-fno-modules)
373 set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS OFF)
374 if ((NOT LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
375 OR (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXXABI_ENABLE_SHARED)
377 set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS ON)
380 if (LIBCXXABI_HAS_UNDEFINED_SYMBOLS)
381 # Need to allow unresolved symbols if this is to work with shared library builds
383 list(APPEND LIBCXXABI_LINK_FLAGS "-undefined dynamic_lookup")
385 # Relax this restriction from HandleLLVMOptions
386 string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
390 if (LIBCXXABI_HAS_PTHREAD_API)
391 add_definitions(-D_LIBCPP_HAS_THREAD_API_PTHREAD)
394 if (LIBCXXABI_HAS_WIN32_THREAD_API)
395 add_definitions(-D_LIBCPP_HAS_THREAD_API_WIN32)
398 if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
399 add_definitions(-D_LIBCPP_HAS_THREAD_API_EXTERNAL)
402 if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
403 add_definitions(-D_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
407 add_definitions(-D_CRT_SECURE_NO_WARNINGS)
410 if (LIBCXXABI_SILENT_TERMINATE)
411 add_definitions(-DLIBCXXABI_SILENT_TERMINATE)
414 if (LIBCXXABI_NON_DEMANGLING_TERMINATE)
415 add_definitions(-DLIBCXXABI_NON_DEMANGLING_TERMINATE)
418 if (LIBCXXABI_BAREMETAL)
419 add_definitions(-DLIBCXXABI_BAREMETAL)
422 if (C_SUPPORTS_COMMENT_LIB_PRAGMA)
423 if (LIBCXXABI_HAS_PTHREAD_LIB)
424 add_definitions(-D_LIBCXXABI_LINK_PTHREAD_LIB)
428 string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}")
429 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FLAGS}")
430 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBCXXABI_C_FLAGS}")
432 # On AIX, avoid picking up VMX extensions(i.e. vec_malloc) which would change
433 # the default alignment of the allocators here.
434 if (UNIX AND ${CMAKE_SYSTEM_NAME} MATCHES "AIX")
435 add_definitions("-D_XOPEN_SOURCE=700")
438 #===============================================================================
440 #===============================================================================
442 set(LIBCXXABI_LIBUNWIND_INCLUDES "${LIBCXXABI_LIBUNWIND_INCLUDES}" CACHE PATH
443 "Specify path to libunwind includes." FORCE)
444 set(LIBCXXABI_LIBUNWIND_PATH "${LIBCXXABI_LIBUNWIND_PATH}" CACHE PATH
445 "Specify path to libunwind source." FORCE)
447 if (LIBCXXABI_USE_LLVM_UNWINDER OR LLVM_NATIVE_ARCH MATCHES ARM)
448 find_path(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL libunwind.h
449 PATHS ${LIBCXXABI_LIBUNWIND_INCLUDES}
450 ${LIBCXXABI_LIBUNWIND_PATH}/include
451 ${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBUNWIND_INCLUDES}
452 ${LLVM_MAIN_SRC_DIR}/projects/libunwind/include
453 ${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/include
454 ${LLVM_MAIN_SRC_DIR}/../libunwind/include
456 NO_CMAKE_FIND_ROOT_PATH
459 if (LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND")
460 set(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL "")
464 if (NOT "${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}" STREQUAL "")
465 include_directories("${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}")
468 # Add source code. This also contains all of the logic for deciding linker flags
470 add_subdirectory(include)
471 add_subdirectory(src)
473 if (LIBCXXABI_INCLUDE_TESTS)
474 add_subdirectory(test)
475 add_subdirectory(fuzz)