forked from OSchip/llvm-project
519 lines
20 KiB
CMake
519 lines
20 KiB
CMake
# See www/CMake.html for instructions on how to build libcxxabi with CMake.
|
|
|
|
#===============================================================================
|
|
# Setup Project
|
|
#===============================================================================
|
|
|
|
cmake_minimum_required(VERSION 3.4.3)
|
|
|
|
if(POLICY CMP0042)
|
|
cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default
|
|
endif()
|
|
|
|
# Add path for custom modules
|
|
set(CMAKE_MODULE_PATH
|
|
"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
|
|
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
|
|
${CMAKE_MODULE_PATH}
|
|
)
|
|
|
|
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR LIBCXXABI_STANDALONE_BUILD)
|
|
project(libcxxabi CXX C)
|
|
|
|
set(PACKAGE_NAME libcxxabi)
|
|
set(PACKAGE_VERSION 9.0.0svn)
|
|
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
|
|
set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org")
|
|
|
|
# Find the LLVM sources and simulate LLVM CMake options.
|
|
include(HandleOutOfTreeLLVM)
|
|
endif()
|
|
|
|
# Require out of source build.
|
|
include(MacroEnsureOutOfSourceBuild)
|
|
MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
|
|
"${PROJECT_NAME} requires an out of source build. Please create a separate
|
|
build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
|
|
)
|
|
|
|
#===============================================================================
|
|
# Setup CMake Options
|
|
#===============================================================================
|
|
include(CMakeDependentOption)
|
|
include(HandleCompilerRT)
|
|
|
|
# Define options.
|
|
option(LIBCXXABI_ENABLE_EXCEPTIONS
|
|
"Provide support for exceptions in the runtime.
|
|
When disabled, libc++abi does not support stack unwinding and other exceptions-related features." ON)
|
|
option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
|
|
option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
|
|
option(LIBCXXABI_ENABLE_PIC "Build Position-Independent Code, even in static library" ON)
|
|
option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
|
|
option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
|
|
option(LIBCXXABI_ENABLE_STATIC_UNWINDER "Statically link the LLVM unwinder." OFF)
|
|
option(LIBCXXABI_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
|
|
option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON)
|
|
option(LIBCXXABI_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF)
|
|
option(LIBCXXABI_HAS_EXTERNAL_THREAD_API
|
|
"Build libc++abi with an externalized threading API.
|
|
This option may only be set to ON when LIBCXXABI_ENABLE_THREADS=ON." OFF)
|
|
option(LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY
|
|
"Build libc++abi with an externalized threading library.
|
|
This option may only be set to ON when LIBCXXABI_ENABLE_THREADS=ON" OFF)
|
|
|
|
# FIXME: This option should default to off. Unfortunatly GCC 4.9 fails to link
|
|
# programs to due undefined references to new/delete in libc++abi. Once this
|
|
# has been fixed or worked around the default value should be changed.
|
|
option(LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS
|
|
"Build libc++abi with definitions for operator new/delete. Normally libc++
|
|
provides these definitions" ON)
|
|
option(LIBCXXABI_BUILD_32_BITS "Build 32 bit libc++abi." ${LLVM_BUILD_32_BITS})
|
|
option(LIBCXXABI_INCLUDE_TESTS "Generate build targets for the libc++abi unit tests." ${LLVM_INCLUDE_TESTS})
|
|
set(LIBCXXABI_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
|
|
"Define suffix of library directory name (32/64)")
|
|
option(LIBCXXABI_INSTALL_LIBRARY "Install the libc++abi library." ON)
|
|
set(LIBCXXABI_TARGET_TRIPLE "" CACHE STRING "Target triple for cross compiling.")
|
|
set(LIBCXXABI_GCC_TOOLCHAIN "" CACHE PATH "GCC toolchain for cross compiling.")
|
|
set(LIBCXXABI_SYSROOT "" CACHE PATH "Sysroot for cross compiling.")
|
|
set(LIBCXXABI_LIBCXX_LIBRARY_PATH "" CACHE PATH "The path to libc++ library.")
|
|
set(LIBCXXABI_LIBRARY_VERSION "1.0" CACHE STRING
|
|
"Version of libc++abi. This will be reflected in the name of the shared \
|
|
library produced. For example, -DLIBCXXABI_LIBRARY_VERSION=x.y will \
|
|
result in the library being named libc++abi.x.y.dylib, along with the \
|
|
usual symlinks pointing to that.")
|
|
|
|
# Default to building a shared library so that the default options still test
|
|
# the libc++abi that is being built. There are two problems with testing a
|
|
# static libc++abi. In the case of a standalone build, the tests will link the
|
|
# system's libc++, which might not have been built against our libc++abi. In the
|
|
# case of an in tree build, libc++ will prefer a dynamic libc++abi from the
|
|
# system over a static libc++abi from the output directory.
|
|
option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON)
|
|
option(LIBCXXABI_ENABLE_STATIC "Build libc++abi as a static library." ON)
|
|
|
|
cmake_dependent_option(LIBCXXABI_INSTALL_STATIC_LIBRARY
|
|
"Install the static libc++abi library." ON
|
|
"LIBCXXABI_ENABLE_STATIC;LIBCXXABI_INSTALL_LIBRARY" OFF)
|
|
cmake_dependent_option(LIBCXXABI_INSTALL_SHARED_LIBRARY
|
|
"Install the shared libc++abi library." ON
|
|
"LIBCXXABI_ENABLE_SHARED;LIBCXXABI_INSTALL_LIBRARY" OFF)
|
|
|
|
cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY
|
|
"Statically link the LLVM unwinder to static library" ON
|
|
"LIBCXXABI_ENABLE_STATIC_UNWINDER;LIBCXXABI_ENABLE_STATIC" OFF)
|
|
cmake_dependent_option(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY
|
|
"Statically link the LLVM unwinder to shared library" ON
|
|
"LIBCXXABI_ENABLE_STATIC_UNWINDER;LIBCXXABI_ENABLE_SHARED" OFF)
|
|
|
|
option(LIBCXXABI_BAREMETAL "Build libc++abi for baremetal targets." OFF)
|
|
# The default terminate handler attempts to demangle uncaught exceptions, which
|
|
# causes extra I/O and demangling code to be pulled in.
|
|
option(LIBCXXABI_SILENT_TERMINATE "Set this to make the terminate handler default to a silent alternative" OFF)
|
|
|
|
if (NOT LIBCXXABI_ENABLE_SHARED AND NOT LIBCXXABI_ENABLE_STATIC)
|
|
message(FATAL_ERROR "libc++abi must be built as either a shared or static library.")
|
|
endif()
|
|
|
|
if (LLVM_EXTERNAL_LIBCXX_SOURCE_DIR)
|
|
set(LIBCXXABI_LIBCXX_SRC_DIRS ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR})
|
|
else()
|
|
set(LIBCXXABI_LIBCXX_SRC_DIRS
|
|
"${LLVM_MAIN_SRC_DIR}/projects/libcxx"
|
|
"${LLVM_MAIN_SRC_DIR}/runtimes/libcxx"
|
|
"${LLVM_MAIN_SRC_DIR}/../libcxx"
|
|
)
|
|
endif()
|
|
|
|
set(LIBCXXABI_LIBCXX_INCLUDE_DIRS "")
|
|
foreach(dir ${LIBCXXABI_LIBCXX_SRC_DIRS})
|
|
list(APPEND LIBCXXABI_LIBCXX_INCLUDE_DIRS "${dir}/include")
|
|
endforeach()
|
|
|
|
find_path(
|
|
LIBCXXABI_LIBCXX_INCLUDES
|
|
__config
|
|
PATHS ${LIBCXXABI_LIBCXX_INCLUDES}
|
|
${LIBCXXABI_LIBCXX_PATH}/include
|
|
${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES}
|
|
${LIBCXXABI_LIBCXX_INCLUDE_DIRS}
|
|
${LLVM_INCLUDE_DIR}/c++/v1
|
|
NO_DEFAULT_PATH
|
|
NO_CMAKE_FIND_ROOT_PATH
|
|
)
|
|
|
|
set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE PATH
|
|
"Specify path to libc++ includes." FORCE)
|
|
|
|
find_path(
|
|
LIBCXXABI_LIBCXX_PATH
|
|
utils/libcxx/test/__init__.py
|
|
PATHS ${LIBCXXABI_LIBCXX_PATH}
|
|
${LIBCXXABI_LIBCXX_INCLUDES}/../
|
|
${LIBCXXABI_LIBCXX_SRC_DIRS}
|
|
NO_DEFAULT_PATH
|
|
NO_CMAKE_FIND_ROOT_PATH
|
|
)
|
|
|
|
if (LIBCXXABI_LIBCXX_PATH STREQUAL "LIBCXXABI_LIBCXX_PATH-NOTFOUND")
|
|
message(WARNING "LIBCXXABI_LIBCXX_PATH was not specified and couldn't be infered.")
|
|
set(LIBCXXABI_LIBCXX_PATH "")
|
|
endif()
|
|
|
|
set(LIBCXXABI_LIBCXX_PATH "${LIBCXXABI_LIBCXX_PATH}" CACHE PATH
|
|
"Specify path to libc++ source." FORCE)
|
|
|
|
option(LIBCXXABI_HERMETIC_STATIC_LIBRARY
|
|
"Do not export any symbols from the static library." OFF)
|
|
|
|
#===============================================================================
|
|
# Configure System
|
|
#===============================================================================
|
|
|
|
# Add path for custom modules
|
|
set(CMAKE_MODULE_PATH
|
|
"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
|
|
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
|
|
${CMAKE_MODULE_PATH}
|
|
)
|
|
|
|
set(LIBCXXABI_COMPILER ${CMAKE_CXX_COMPILER})
|
|
set(LIBCXXABI_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
|
|
set(LIBCXXABI_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
|
|
|
|
string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
|
|
${PACKAGE_VERSION})
|
|
|
|
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
|
|
set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
|
|
set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
|
|
if(LIBCXX_LIBDIR_SUBDIR)
|
|
string(APPEND LIBCXXABI_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
|
|
string(APPEND LIBCXXABI_INSTALL_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
|
|
endif()
|
|
elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
|
|
set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
|
|
set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX})
|
|
else()
|
|
set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
|
|
set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX})
|
|
endif()
|
|
|
|
set(LIBCXXABI_INSTALL_PREFIX "" CACHE STRING "Define libc++abi destination prefix.")
|
|
|
|
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
|
|
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
|
|
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
|
|
|
|
# By default, for non-standalone builds, libcxx and libcxxabi share a library
|
|
# directory.
|
|
if (NOT LIBCXXABI_LIBCXX_LIBRARY_PATH)
|
|
set(LIBCXXABI_LIBCXX_LIBRARY_PATH "${LIBCXXABI_LIBRARY_DIR}" CACHE PATH
|
|
"The path to libc++ library.")
|
|
endif()
|
|
|
|
# Check that we can build with 32 bits if requested.
|
|
if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32)
|
|
if (LIBCXXABI_BUILD_32_BITS AND NOT LLVM_BUILD_32_BITS) # Don't duplicate the output from LLVM
|
|
message(STATUS "Building 32 bits executables and libraries.")
|
|
endif()
|
|
elseif(LIBCXXABI_BUILD_32_BITS)
|
|
message(FATAL_ERROR "LIBCXXABI_BUILD_32_BITS=ON is not supported on this platform.")
|
|
endif()
|
|
|
|
# Declare libc++abi configuration variables.
|
|
# They are intended for use as follows:
|
|
# LIBCXXABI_C_FLAGS: General flags for both the c++ compiler and linker.
|
|
# LIBCXXABI_CXX_FLAGS: General flags for both the c++ compiler and linker.
|
|
# LIBCXXABI_COMPILE_FLAGS: Compile only flags.
|
|
# LIBCXXABI_LINK_FLAGS: Linker only flags.
|
|
# LIBCXXABI_LIBRARIES: libraries libc++abi is linked to.
|
|
|
|
set(LIBCXXABI_C_FLAGS "")
|
|
set(LIBCXXABI_CXX_FLAGS "")
|
|
set(LIBCXXABI_COMPILE_FLAGS "")
|
|
set(LIBCXXABI_LINK_FLAGS "")
|
|
set(LIBCXXABI_LIBRARIES "")
|
|
|
|
# Include macros for adding and removing libc++abi flags.
|
|
include(HandleLibcxxabiFlags)
|
|
|
|
#===============================================================================
|
|
# Setup Compiler Flags
|
|
#===============================================================================
|
|
|
|
# Configure target flags
|
|
add_target_flags_if(LIBCXXABI_BUILD_32_BITS "-m32")
|
|
|
|
if(LIBCXXABI_TARGET_TRIPLE)
|
|
add_target_flags("--target=${LIBCXXABI_TARGET_TRIPLE}")
|
|
elseif(CMAKE_CXX_COMPILER_TARGET)
|
|
set(LIBCXXABI_TARGET_TRIPLE "${CMAKE_CXX_COMPILER_TARGET}")
|
|
endif()
|
|
if(LIBCXX_GCC_TOOLCHAIN)
|
|
add_target_flags("--gcc-toolchain=${LIBCXXABI_GCC_TOOLCHAIN}")
|
|
elseif(CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN)
|
|
set(LIBCXXABI_GCC_TOOLCHAIN "${CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN}")
|
|
endif()
|
|
if(LIBCXXABI_SYSROOT)
|
|
add_target_flags("--sysroot=${LIBCXXABI_SYSROOT}")
|
|
elseif(CMAKE_SYSROOT)
|
|
set(LIBCXXABI_SYSROOT "${CMAKE_SYSROOT}")
|
|
endif()
|
|
|
|
if (LIBCXXABI_TARGET_TRIPLE)
|
|
set(TARGET_TRIPLE "${LIBCXXABI_TARGET_TRIPLE}")
|
|
endif()
|
|
|
|
# Configure compiler. Must happen after setting the target flags.
|
|
include(config-ix)
|
|
|
|
if (LIBCXXABI_HAS_NOSTDINCXX_FLAG)
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++)
|
|
# cmake 3.14 and above remove system include paths that are explicitly
|
|
# passed on the command line. We build with -nostdinc++ and explicitly add
|
|
# just the libcxx system include paths with -I on the command line.
|
|
# Setting CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES effectively prevents cmake
|
|
# from removing these.
|
|
# See: https://gitlab.kitware.com/cmake/cmake/issues/19227
|
|
set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES "")
|
|
# Remove -stdlib flags to prevent them from causing an unused flag warning.
|
|
string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
|
|
string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
|
|
endif()
|
|
|
|
# Let the library headers know they are currently being used to build the
|
|
# library.
|
|
add_definitions(-D_LIBCXXABI_BUILDING_LIBRARY)
|
|
|
|
# Disable DLL annotations on Windows for static builds.
|
|
if (WIN32 AND LIBCXXABI_ENABLE_STATIC AND NOT LIBCXXABI_ENABLE_SHARED)
|
|
add_definitions(-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
|
|
endif()
|
|
|
|
add_compile_flags_if_supported(-Werror=return-type)
|
|
|
|
# Get warning flags
|
|
add_compile_flags_if_supported(-W)
|
|
add_compile_flags_if_supported(-Wall)
|
|
add_compile_flags_if_supported(-Wchar-subscripts)
|
|
add_compile_flags_if_supported(-Wconversion)
|
|
add_compile_flags_if_supported(-Wmismatched-tags)
|
|
add_compile_flags_if_supported(-Wmissing-braces)
|
|
add_compile_flags_if_supported(-Wnewline-eof)
|
|
add_compile_flags_if_supported(-Wunused-function)
|
|
add_compile_flags_if_supported(-Wshadow)
|
|
add_compile_flags_if_supported(-Wshorten-64-to-32)
|
|
add_compile_flags_if_supported(-Wsign-compare)
|
|
add_compile_flags_if_supported(-Wsign-conversion)
|
|
add_compile_flags_if_supported(-Wstrict-aliasing=2)
|
|
add_compile_flags_if_supported(-Wstrict-overflow=4)
|
|
add_compile_flags_if_supported(-Wunused-parameter)
|
|
add_compile_flags_if_supported(-Wunused-variable)
|
|
add_compile_flags_if_supported(-Wwrite-strings)
|
|
add_compile_flags_if_supported(-Wundef)
|
|
|
|
if (LIBCXXABI_ENABLE_WERROR)
|
|
add_compile_flags_if_supported(-Werror)
|
|
add_compile_flags_if_supported(-WX)
|
|
else()
|
|
add_compile_flags_if_supported(-Wno-error)
|
|
add_compile_flags_if_supported(-WX-)
|
|
endif()
|
|
if (LIBCXXABI_ENABLE_PEDANTIC)
|
|
add_compile_flags_if_supported(-pedantic)
|
|
endif()
|
|
|
|
# Get feature flags.
|
|
add_compile_flags_if_supported(-fstrict-aliasing)
|
|
|
|
# Exceptions
|
|
if (LIBCXXABI_ENABLE_EXCEPTIONS)
|
|
# Catches C++ exceptions only and tells the compiler to assume that extern C
|
|
# functions never throw a C++ exception.
|
|
add_compile_flags_if_supported(-EHsc)
|
|
# Do we really need to be run through the C compiler ?
|
|
add_c_compile_flags_if_supported(-funwind-tables)
|
|
else()
|
|
add_definitions(-D_LIBCXXABI_NO_EXCEPTIONS)
|
|
add_compile_flags_if_supported(-fno-exceptions)
|
|
add_compile_flags_if_supported(-EHs-)
|
|
add_compile_flags_if_supported(-EHa-)
|
|
endif()
|
|
|
|
# Assert
|
|
string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
|
|
if (LIBCXXABI_ENABLE_ASSERTIONS)
|
|
# MSVC doesn't like _DEBUG on release builds. See PR 4379.
|
|
if (NOT MSVC)
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -D_DEBUG)
|
|
endif()
|
|
# On Release builds cmake automatically defines NDEBUG, so we
|
|
# explicitly undefine it:
|
|
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -UNDEBUG)
|
|
endif()
|
|
else()
|
|
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -DNDEBUG)
|
|
endif()
|
|
endif()
|
|
# Static library
|
|
if (NOT LIBCXXABI_ENABLE_SHARED)
|
|
list(APPEND LIBCXXABI_COMPILE_FLAGS -D_LIBCPP_BUILD_STATIC)
|
|
endif()
|
|
|
|
# Threading
|
|
if (NOT LIBCXXABI_ENABLE_THREADS)
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
message(FATAL_ERROR "LIBCXXABI_HAS_PTHREAD_API can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
|
|
message(FATAL_ERROR "LIBCXXABI_HAS_EXTERNAL_THREAD_API can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
message(FATAL_ERROR "LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY can only"
|
|
" be set to ON when LIBCXXABI_ENABLE_THREADS"
|
|
" is also set to ON.")
|
|
endif()
|
|
add_definitions(-D_LIBCXXABI_HAS_NO_THREADS)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
message(FATAL_ERROR "The options LIBCXXABI_HAS_EXTERNAL_THREAD_API"
|
|
" and LIBCXXABI_HAS_PTHREAD_API cannot be both"
|
|
" set to ON at the same time.")
|
|
endif()
|
|
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
message(FATAL_ERROR "The options LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY"
|
|
" and LIBCXXABI_HAS_EXTERNAL_THREAD_API cannot be both"
|
|
" set to ON at the same time.")
|
|
endif()
|
|
endif()
|
|
|
|
if (LLVM_ENABLE_MODULES)
|
|
# Ignore that the rest of the modules flags are now unused.
|
|
add_compile_flags_if_supported(-Wno-unused-command-line-argument)
|
|
add_compile_flags(-fno-modules)
|
|
endif()
|
|
|
|
set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS OFF)
|
|
if ((NOT LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
|
|
OR (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXXABI_ENABLE_SHARED)
|
|
OR MINGW)
|
|
set(LIBCXXABI_HAS_UNDEFINED_SYMBOLS ON)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_UNDEFINED_SYMBOLS)
|
|
# Need to allow unresolved symbols if this is to work with shared library builds
|
|
if (APPLE)
|
|
list(APPEND LIBCXXABI_LINK_FLAGS "-undefined dynamic_lookup")
|
|
else()
|
|
# Relax this restriction from HandleLLVMOptions
|
|
string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
|
|
endif()
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_PTHREAD_API)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_API_PTHREAD)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_API_EXTERNAL)
|
|
endif()
|
|
|
|
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
|
|
add_definitions(-D_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
|
|
endif()
|
|
|
|
# Prevent libc++abi from having library dependencies on libc++
|
|
add_definitions(-D_LIBCPP_DISABLE_EXTERN_TEMPLATE)
|
|
|
|
# Bring back `std::unexpected`, which is removed in C++17, to support
|
|
# pre-C++17.
|
|
add_definitions(-D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS)
|
|
|
|
if (MSVC)
|
|
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
|
|
endif()
|
|
|
|
# Define LIBCXXABI_USE_LLVM_UNWINDER for conditional compilation.
|
|
if (LIBCXXABI_USE_LLVM_UNWINDER)
|
|
add_definitions(-DLIBCXXABI_USE_LLVM_UNWINDER)
|
|
endif()
|
|
|
|
if (LIBCXXABI_SILENT_TERMINATE)
|
|
add_definitions(-DLIBCXXABI_SILENT_TERMINATE)
|
|
endif()
|
|
|
|
if (LIBCXXABI_BAREMETAL)
|
|
add_definitions(-DLIBCXXABI_BAREMETAL)
|
|
endif()
|
|
|
|
if (LIBCXXABI_HAS_COMMENT_LIB_PRAGMA)
|
|
add_definitions(-D_LIBCXXABI_HAS_COMMENT_LIB_PRAGMA)
|
|
endif()
|
|
|
|
string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${LIBCXXABI_CXX_FLAGS}")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FLAGS}")
|
|
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBCXXABI_C_FLAGS}")
|
|
|
|
#===============================================================================
|
|
# Setup Source Code
|
|
#===============================================================================
|
|
|
|
set(LIBCXXABI_LIBUNWIND_INCLUDES "${LIBCXXABI_LIBUNWIND_INCLUDES}" CACHE PATH
|
|
"Specify path to libunwind includes." FORCE)
|
|
set(LIBCXXABI_LIBUNWIND_PATH "${LIBCXXABI_LIBUNWIND_PATH}" CACHE PATH
|
|
"Specify path to libunwind source." FORCE)
|
|
|
|
include_directories(include)
|
|
if (LIBCXXABI_USE_LLVM_UNWINDER OR LLVM_NATIVE_ARCH MATCHES ARM)
|
|
find_path(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL libunwind.h
|
|
PATHS ${LIBCXXABI_LIBUNWIND_INCLUDES}
|
|
${LIBCXXABI_LIBUNWIND_PATH}/include
|
|
${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBUNWIND_INCLUDES}
|
|
${LLVM_MAIN_SRC_DIR}/projects/libunwind/include
|
|
${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/include
|
|
${LLVM_MAIN_SRC_DIR}/../libunwind/include
|
|
NO_DEFAULT_PATH
|
|
NO_CMAKE_FIND_ROOT_PATH
|
|
)
|
|
|
|
if (LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND")
|
|
set(LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL "")
|
|
endif()
|
|
|
|
if (NOT LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "")
|
|
include_directories("${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}")
|
|
endif()
|
|
endif()
|
|
|
|
# Add source code. This also contains all of the logic for deciding linker flags
|
|
# soname, etc...
|
|
add_subdirectory(src)
|
|
|
|
if (LIBCXXABI_INCLUDE_TESTS)
|
|
if (LIBCXXABI_STANDALONE_BUILD AND NOT LIBCXXABI_ENABLE_SHARED)
|
|
# We can't reasonably test the system C++ library with a static
|
|
# libc++abi. We either need to be able to replace libc++abi at
|
|
# run time (with a shared libc++abi), or we need to be able to
|
|
# replace the C++ runtime (with a non- standalone build).
|
|
message(WARNING "The libc++abi tests aren't valid when libc++abi "
|
|
"is built standalone (i.e. outside of "
|
|
"llvm/projects/libcxxabi ) and is built without "
|
|
"a shared library. Either build a shared "
|
|
"library, build libc++abi at the same time as "
|
|
"you build libc++, or do without testing. No "
|
|
"check target will be available!")
|
|
else()
|
|
add_subdirectory(test)
|
|
add_subdirectory(fuzz)
|
|
endif()
|
|
endif()
|