# Get sources
set(LIBCXXABI_SOURCES
# C++ABI files
cxa_aux_runtime.cpp
cxa_default_handlers.cpp
cxa_demangle.cpp
cxa_exception_storage.cpp
cxa_guard.cpp
cxa_handlers.cpp
cxa_vector.cpp
cxa_virtual.cpp
# C++ STL files
stdlib_exception.cpp
stdlib_stdexcept.cpp
stdlib_typeinfo.cpp
# Internal files
abort_message.cpp
fallback_malloc.cpp
private_typeinfo.cpp
)
if (LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
list(APPEND LIBCXXABI_SOURCES
stdlib_new_delete.cpp
)
endif()
if (LIBCXXABI_ENABLE_EXCEPTIONS)
list(APPEND LIBCXXABI_SOURCES
cxa_exception.cpp
cxa_personality.cpp
)
else()
list(APPEND LIBCXXABI_SOURCES
cxa_noexception.cpp
)
endif()
if (LIBCXXABI_ENABLE_THREADS AND (UNIX OR FUCHSIA) AND NOT (APPLE OR CYGWIN)
AND NOT (${CMAKE_SYSTEM_NAME} MATCHES "AIX"))
list(APPEND LIBCXXABI_SOURCES
cxa_thread_atexit.cpp
)
endif()
set(LIBCXXABI_HEADERS
../include/cxxabi.h
)
# Add all the headers to the project for IDEs.
if (MSVC_IDE OR XCODE)
# Force them all into the headers dir on MSVC, otherwise they end up at
# project scope because they don't have extensions.
if (MSVC_IDE)
source_group("Header Files" FILES ${LIBCXXABI_HEADERS})
endif()
endif()
# Some files depend on libc++ internals.
include_directories("${LIBCXXABI_LIBCXX_PATH}/src")
if (LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL)
add_definitions(-DHAVE___CXA_THREAD_ATEXIT_IMPL)
endif()
if (LIBCXXABI_ENABLE_FORGIVING_DYNAMIC_CAST)
add_definitions(-D_LIBCXXABI_FORGIVING_DYNAMIC_CAST)
endif()
if (NOT APPLE) # On Apple platforms, we always use -nostdlib++ so we don't need to re-add other libraries
if (LIBCXXABI_ENABLE_THREADS)
add_library_flags_if(LIBCXXABI_HAS_PTHREAD_LIB pthread)
endif()
add_library_flags_if(LIBCXXABI_HAS_C_LIB c)
endif()
if (NOT LIBCXXABI_USE_COMPILER_RT)
add_library_flags_if(LIBCXXABI_HAS_GCC_LIB gcc)
endif()
if (NOT LIBCXXABI_USE_LLVM_UNWINDER)
add_library_flags_if(LIBCXXABI_HAS_GCC_S_LIB gcc_s)
endif()
if (MINGW)
# MINGW_LIBRARIES is defined in config-ix.cmake
list(APPEND LIBCXXABI_LIBRARIES ${MINGW_LIBRARIES})
endif()
if (ANDROID AND ANDROID_PLATFORM_LEVEL LESS 21)
list(APPEND LIBCXXABI_LIBRARIES android_support)
endif()
# Setup flags.
if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
add_link_flags_if_supported(-nostdlib++)
else()
add_link_flags_if_supported(-nodefaultlibs)
endif()
if (CXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG AND LIBCXXABI_USE_LLVM_UNWINDER)
# If we're linking directly against the libunwind that we're building
# in the same invocation, don't try to link in the toolchain's
# default libunwind (which may be missing still).
add_link_flags_if_supported(--unwindlib=none)
endif()
if ( APPLE )
if (LLVM_USE_SANITIZER)
if (("${LLVM_USE_SANITIZER}" STREQUAL "Address") OR
("${LLVM_USE_SANITIZER}" STREQUAL "Address;Undefined") OR
("${LLVM_USE_SANITIZER}" STREQUAL "Undefined;Address"))
set(LIBFILE "libclang_rt.asan_osx_dynamic.dylib")
elseif("${LLVM_USE_SANITIZER}" STREQUAL "Undefined")
set(LIBFILE "libclang_rt.ubsan_osx_dynamic.dylib")
elseif("${LLVM_USE_SANITIZER}" STREQUAL "Thread")
set(LIBFILE "libclang_rt.tsan_osx_dynamic.dylib")
else()
message(WARNING "LLVM_USE_SANITIZER=${LLVM_USE_SANITIZER} is not supported on OS X")
endif()
if (LIBFILE)
find_compiler_rt_library(builtins LIBCXXABI_BUILTINS_LIBRARY)
get_filename_component(LIBDIR "${LIBCXXABI_BUILTINS_LIBRARY}" DIRECTORY)
if (NOT IS_DIRECTORY "${LIBDIR}")
message(FATAL_ERROR "Cannot find compiler-rt directory on OS X required for LLVM_USE_SANITIZER")
endif()
set(LIBCXXABI_SANITIZER_LIBRARY "${LIBDIR}/${LIBFILE}")
set(LIBCXXABI_SANITIZER_LIBRARY "${LIBCXXABI_SANITIZER_LIBRARY}" PARENT_SCOPE)
message(STATUS "Manually linking compiler-rt library: ${LIBCXXABI_SANITIZER_LIBRARY}")
add_library_flags("${LIBCXXABI_SANITIZER_LIBRARY}")
add_link_flags("-Wl,-rpath,${LIBDIR}")
endif()
endif()
# Make sure we link in CrashReporterClient if we find it -- it's used by
# abort() on Apple platforms when building the system dylib.
find_library(CrashReporterClient NAMES libCrashReporterClient.a
PATHS "${CMAKE_OSX_SYSROOT}/usr/local/lib")
if (CrashReporterClient)
message(STATUS "Linking with CrashReporterClient at ${CrashReporterClient}")
add_library_flags("${CrashReporterClient}")
else()
message(STATUS "Could not find CrashReporterClient, not linking against it")
endif()
endif()
split_list(LIBCXXABI_COMPILE_FLAGS)
split_list(LIBCXXABI_LINK_FLAGS)
# FIXME: libc++abi.so will not link when modules are enabled because it depends
# on symbols defined in libc++.so which has not yet been built.
if (LLVM_ENABLE_MODULES)
string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
endif()
include(WarningFlags)
# Build the shared library.
add_library(cxxabi_shared_objects OBJECT EXCLUDE_FROM_ALL ${LIBCXXABI_SOURCES} ${LIBCXXABI_HEADERS})
cxx_add_warning_flags(cxxabi_shared_objects ${LIBCXXABI_ENABLE_WERROR} ${LIBCXXABI_ENABLE_PEDANTIC})
if (LIBCXXABI_USE_LLVM_UNWINDER)
if (LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY OR
(DEFINED LIBUNWIND_ENABLE_SHARED AND NOT LIBUNWIND_ENABLE_SHARED))
target_link_libraries(cxxabi_shared_objects PUBLIC unwind_shared_objects) # propagate usage requirements
target_sources(cxxabi_shared_objects PUBLIC $<TARGET_OBJECTS:unwind_shared_objects>)
else()
target_link_libraries(cxxabi_shared_objects PUBLIC unwind_shared)
endif()
endif()
target_link_libraries(cxxabi_shared_objects PRIVATE cxx-headers ${LIBCXXABI_LIBRARIES})
if (NOT CXX_SUPPORTS_NOSTDLIBXX_FLAG)
target_link_libraries(cxxabi_shared_objects PRIVATE ${LIBCXXABI_BUILTINS_LIBRARY})
endif()
target_link_libraries(cxxabi_shared_objects PUBLIC cxxabi-headers)
set_target_properties(cxxabi_shared_objects
PROPERTIES
CXX_EXTENSIONS OFF
CXX_STANDARD 23
CXX_STANDARD_REQUIRED OFF # TODO: Make this REQUIRED once we don't need to accommodate the LLVM documentation builders using an ancient CMake
COMPILE_FLAGS "${LIBCXXABI_COMPILE_FLAGS}"
DEFINE_SYMBOL ""
)
if (CMAKE_POSITION_INDEPENDENT_CODE OR NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
set_target_properties(cxxabi_shared_objects PROPERTIES POSITION_INDEPENDENT_CODE ON) # must set manually because it's an object library
endif()
target_compile_options(cxxabi_shared_objects PRIVATE "${LIBCXXABI_ADDITIONAL_COMPILE_FLAGS}")
if (LIBCXXABI_ENABLE_SHARED)
add_library(cxxabi_shared SHARED)
set_target_properties(cxxabi_shared
PROPERTIES
LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
OUTPUT_NAME "${LIBCXXABI_SHARED_OUTPUT_NAME}"
SOVERSION "1"
VERSION "${LIBCXXABI_LIBRARY_VERSION}"
)
if (ZOS)
add_custom_command(TARGET cxxabi_shared POST_BUILD
COMMAND
${LIBCXXABI_LIBCXX_PATH}/utils/zos_rename_dll_side_deck.sh
$<TARGET_LINKER_FILE_NAME:cxxabi_shared> $<TARGET_FILE_NAME:cxxabi_shared> "${LIBCXXABI_DLL_NAME}"
COMMENT "Rename dll name inside the side deck file"
WORKING_DIRECTORY $<TARGET_FILE_DIR:cxxabi_shared>
)
endif ()
target_link_libraries(cxxabi_shared
PUBLIC cxxabi_shared_objects
PRIVATE ${LIBCXXABI_LIBRARIES})
list(APPEND LIBCXXABI_BUILD_TARGETS "cxxabi_shared")
if (LIBCXXABI_INSTALL_SHARED_LIBRARY)
list(APPEND LIBCXXABI_INSTALL_TARGETS "cxxabi_shared")
endif()
add_library(cxxabi-reexports INTERFACE)
function(export_symbols file)
# -exported_symbols_list is only available on Apple platforms
if (APPLE)
target_link_libraries(cxxabi_shared PRIVATE "-Wl,-exported_symbols_list,${file}")
endif()
endfunction()
function(reexport_symbols file)
export_symbols("${file}")
# -reexported_symbols_list is only available on Apple platforms
if (APPLE)
target_link_libraries(cxxabi-reexports INTERFACE "-Wl,-reexported_symbols_list,${file}")
endif()
endfunction()
export_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/symbols-not-reexported.exp")
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/cxxabiv1.exp")
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/fundamental-types.exp")
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/itanium-base.exp")
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/std-misc.exp")
if (LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/new-delete.exp")
endif()
# Note that std:: exception types are always defined by the library regardless of
# whether the exception runtime machinery is provided.
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/std-exceptions.exp")
if (LIBCXXABI_ENABLE_EXCEPTIONS)
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/itanium-exceptions.exp")
if ("${CMAKE_OSX_ARCHITECTURES}" MATCHES "^(armv6|armv7|armv7s)$")
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/personality-sjlj.exp")
else()
reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/personality-v0.exp")
endif()
endif()
endif()
# Build the static library.
add_library(cxxabi_static_objects OBJECT EXCLUDE_FROM_ALL ${LIBCXXABI_SOURCES} ${LIBCXXABI_HEADERS})
cxx_add_warning_flags(cxxabi_static_objects ${LIBCXXABI_ENABLE_WERROR} ${LIBCXXABI_ENABLE_PEDANTIC})
if (LIBCXXABI_USE_LLVM_UNWINDER AND LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY)
target_link_libraries(cxxabi_static_objects PUBLIC unwind_static_objects) # propagate usage requirements
target_sources(cxxabi_static_objects PUBLIC $<TARGET_OBJECTS:unwind_static_objects>)
endif()
target_link_libraries(cxxabi_static_objects PRIVATE cxx-headers ${LIBCXXABI_STATIC_LIBRARIES} ${LIBCXXABI_LIBRARIES})
target_link_libraries(cxxabi_static_objects PUBLIC cxxabi-headers)
set_target_properties(cxxabi_static_objects
PROPERTIES
CXX_EXTENSIONS OFF
CXX_STANDARD 23
CXX_STANDARD_REQUIRED OFF # TODO: Make this REQUIRED once we don't need to accommodate the LLVM documentation builders using an ancient CMake
COMPILE_FLAGS "${LIBCXXABI_COMPILE_FLAGS}"
)
target_compile_options(cxxabi_static_objects PRIVATE "${LIBCXXABI_ADDITIONAL_COMPILE_FLAGS}")
if(LIBCXXABI_HERMETIC_STATIC_LIBRARY)
target_add_compile_flags_if_supported(cxxabi_static_objects PRIVATE -fvisibility=hidden)
# If the hermetic library doesn't define the operator new/delete functions
# then its code shouldn't declare them with hidden visibility. They might
# actually be provided by a shared library at link time.
if (LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
target_add_compile_flags_if_supported(cxxabi_static_objects PRIVATE -fvisibility-global-new-delete=force-hidden)
if (NOT CXX_SUPPORTS_FVISIBILITY_GLOBAL_NEW_DELETE_EQ_FORCE_HIDDEN_FLAG)
target_add_compile_flags_if_supported(cxxabi_static_objects PRIVATE -fvisibility-global-new-delete-hidden)
endif()
endif()
# _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS can be defined in libcxx's
# __config_site too. Define it in the same way here, to avoid redefinition
# conflicts.
target_compile_definitions(cxxabi_static_objects
PRIVATE
_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS
_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=)
endif()
if (LIBCXXABI_ENABLE_STATIC)
add_library(cxxabi_static STATIC)
if (LIBCXXABI_USE_LLVM_UNWINDER AND NOT LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY)
target_link_libraries(cxxabi_static PUBLIC unwind_static)
endif()
set_target_properties(cxxabi_static
PROPERTIES
LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
OUTPUT_NAME "${LIBCXXABI_STATIC_OUTPUT_NAME}"
)
target_link_libraries(cxxabi_static
PUBLIC cxxabi_static_objects
PRIVATE ${LIBCXXABI_STATIC_LIBRARIES} ${LIBCXXABI_LIBRARIES})
list(APPEND LIBCXXABI_BUILD_TARGETS "cxxabi_static")
if (LIBCXXABI_INSTALL_STATIC_LIBRARY)
list(APPEND LIBCXXABI_INSTALL_TARGETS "cxxabi_static")
endif()
endif()
# Add a meta-target for both libraries.
add_custom_target(cxxabi DEPENDS ${LIBCXXABI_BUILD_TARGETS})
if (LIBCXXABI_INSTALL_LIBRARY)
install(TARGETS ${LIBCXXABI_INSTALL_TARGETS}
LIBRARY DESTINATION ${LIBCXXABI_INSTALL_LIBRARY_DIR} COMPONENT cxxabi
ARCHIVE DESTINATION ${LIBCXXABI_INSTALL_LIBRARY_DIR} COMPONENT cxxabi
RUNTIME DESTINATION ${LIBCXXABI_INSTALL_RUNTIME_DIR} COMPONENT cxxabi
)
endif()
if (NOT CMAKE_CONFIGURATION_TYPES AND LIBCXXABI_INSTALL_LIBRARY)
add_custom_target(install-cxxabi
DEPENDS cxxabi install-cxxabi-headers
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=cxxabi
-P "${LIBCXXABI_BINARY_DIR}/cmake_install.cmake")
add_custom_target(install-cxxabi-stripped
DEPENDS cxxabi
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=cxxabi
-DCMAKE_INSTALL_DO_STRIP=1
-P "${LIBCXXABI_BINARY_DIR}/cmake_install.cmake")
endif()
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