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llvm-capstone/libcxxabi/CMakeLists.txt
Petr Hosek ef6f231f56 [libcxxabi][CMake] Support in-tree libunwind when building as part of runtimes 
When building as part of runtimes, there is no predefined order in
which the runtimes are loaded, so the targets from other projects
might not be available. We need to rely on HAVE_<name> variables
instead in that case.

Differential Revision: https://reviews.llvm.org/D29574

llvm-svn: 294552
2017-02-09 02:19:30 +00:00

510 lines
20 KiB
CMake
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#===============================================================================
# Setup Project
#===============================================================================
cmake_minimum_required(VERSION 3.4.3)
if(POLICY CMP0042)
cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default
endif()
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(libcxxabi)
# Rely on llvm-config.
set(CONFIG_OUTPUT)
if (NOT LLVM_CONFIG_PATH)
find_program(LLVM_CONFIG_PATH "llvm-config")
endif()
if(DEFINED LLVM_PATH)
set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree")
set(LLVM_MAIN_SRC_DIR ${LLVM_PATH})
set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules")
elseif(LLVM_CONFIG_PATH)
message(STATUS "Found LLVM_CONFIG_PATH as ${LLVM_CONFIG_PATH}")
set(CONFIG_COMMAND ${LLVM_CONFIG_PATH}
"--includedir"
"--prefix"
"--src-root")
execute_process(
COMMAND ${CONFIG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
)
if(NOT HAD_ERROR)
string(REGEX REPLACE
"[ \t]*[\r\n]+[ \t]*" ";"
CONFIG_OUTPUT ${CONFIG_OUTPUT})
else()
string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
message(STATUS "${CONFIG_COMMAND_STR}")
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
list(GET CONFIG_OUTPUT 0 INCLUDE_DIR)
list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT)
list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR)
set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py")
# --cmakedir is supported since llvm r291218 (4.0 release)
execute_process(
COMMAND ${LLVM_CONFIG_PATH} --cmakedir
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
ERROR_QUIET)
if(NOT HAD_ERROR)
string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH)
else()
set(LLVM_CMAKE_PATH
"${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
endif()
else()
message(FATAL_ERROR "llvm-config not found and LLVM_MAIN_SRC_DIR not defined. "
"Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config "
"or -DLLVM_PATH=path/to/llvm-source-root.")
endif()
if(EXISTS ${LLVM_CMAKE_PATH})
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
include("${LLVM_CMAKE_PATH}/AddLLVM.cmake")
include("${LLVM_CMAKE_PATH}/HandleLLVMOptions.cmake")
else()
message(FATAL_ERROR "Not found: ${LLVM_CMAKE_PATH}")
endif()
set(PACKAGE_NAME libcxxabi)
set(PACKAGE_VERSION 5.0.0svn)
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org")
if (NOT DEFINED LLVM_INCLUDE_TESTS)
set(LLVM_INCLUDE_TESTS ON)
endif()
if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
else()
# Seek installed Lit.
find_program(LLVM_LIT "lit.py" ${LLVM_MAIN_SRC_DIR}/utils/lit
DOC "Path to lit.py")
endif()
if(LLVM_LIT)
# Define the default arguments to use with 'lit', and an option for the user
# to override.
set(LIT_ARGS_DEFAULT "-sv")
if (MSVC OR XCODE)
set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
endif()
set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
# On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
if( WIN32 AND NOT CYGWIN )
set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
endif()
else()
set(LLVM_INCLUDE_TESTS OFF)
endif()
set(LIBCXXABI_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
"Define suffix of library directory name (32/64)")
set(LIBCXXABI_STANDALONE_BUILD 1)
else()
set(LLVM_MAIN_SRC_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Path to LLVM source tree")
set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py")
set(LIBCXXABI_LIBDIR_SUFFIX ${LLVM_LIBDIR_SUFFIX})
endif()
#===============================================================================
# Setup CMake Options
#===============================================================================
# Define options.
option(LIBCXXABI_ENABLE_EXCEPTIONS "Use exceptions." ON)
option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." 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)
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_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.")
# 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)
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"
)
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
vector
PATHS ${LIBCXXABI_LIBCXX_INCLUDES}
${LIBCXXABI_LIBCXX_PATH}/include
${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES}
${LIBCXXABI_LIBCXX_INCLUDE_DIRS}
${LLVM_INCLUDE_DIR}/c++/v1
)
set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE PATH
"Specify path to libc++ includes." FORCE)
find_path(
LIBCXXABI_LIBCXX_PATH
test/libcxx/__init__.py
PATHS ${LIBCXXABI_LIBCXX_PATH}
${LIBCXXABI_LIBCXX_INCLUDES}/../
${LIBCXXABI_LIBCXX_SRC_DIRS}
NO_DEFAULT_PATH
)
if (LIBCXXABI_LIBCXX_PATH STREQUAL "LIBCXXABI_LIBCXX_PATH-NOTFOUND")
message(WARNING "LIBCXXABI_LIBCXX_PATH was not specified and couldn't be infered.")
set(LIBCXXABI_LIBCXX_PATH "")
endif()
set(LIBCXXABI_LIBCXX_PATH "${LIBCXXABI_LIBCXX_PATH}" CACHE PATH
"Specify path to libc++ source." FORCE)
#===============================================================================
# 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})
set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXXABI_LIBRARY_DIR})
set(CMAKE_LIBRARY_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()
#===============================================================================
# Setup Compiler Flags
#===============================================================================
# Get required flags.
macro(append_if list condition var)
if (${condition})
list(APPEND ${list} ${var})
endif()
endmacro()
macro(add_target_flags_if condition var)
if (${condition})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${var}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${var}")
list(APPEND LIBCXXABI_LINK_FLAGS ${var})
endif()
endmacro()
set(LIBCXXABI_C_FLAGS "")
set(LIBCXXABI_CXX_FLAGS "")
set(LIBCXXABI_COMPILE_FLAGS "")
set(LIBCXXABI_LINK_FLAGS "")
# Configure target flags
add_target_flags_if(LIBCXXABI_BUILD_32_BITS "-m32")
add_target_flags_if(LIBCXXABI_TARGET_TRIPLE
"-target ${LIBCXXABI_TARGET_TRIPLE}")
add_target_flags_if(LIBCXXABI_GCC_TOOLCHAIN
"-gcc-toolchain ${LIBCXXABI_GCC_TOOLCHAIN}")
add_target_flags_if(LIBCXXABI_SYSROOT
"--sysroot=${LIBCXXABI_SYSROOT}")
if (LIBCXXABI_TARGET_TRIPLE)
set(TARGET_TRIPLE "${LIBCXXABI_TARGET_TRIPLE}")
endif()
# Configure compiler. Must happen after setting the target flags.
include(config-ix)
if (LIBCXXABI_HAS_NOSTDINCXX_FLAG)
list(APPEND LIBCXXABI_COMPILE_FLAGS -nostdinc++)
# Remove -stdlib flags to prevent them from causing an unused flag warning.
string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
string(REPLACE "-stdlib=libstdc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endif()
if (LIBCXXABI_USE_COMPILER_RT)
list(APPEND LIBCXXABI_LINK_FLAGS "-rtlib=compiler-rt")
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_DLL_IMPORT_EXPORT)
endif()
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror=return-type)
# Get warning flags
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_W_FLAG -W)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WALL_FLAG -Wall)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WCONVERSION_FLAG -Wconversion)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WMISSING_BRACES_FLAG -Wmissing-braces)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSHADOW_FLAG -Wshadow)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSIGN_COMPARE_FLAG -Wsign-compare)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WUNDEF_FLAG -Wundef)
if (LIBCXXABI_ENABLE_WERROR)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WX_FLAG -WX)
else()
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_WNO_ERROR_FLAG -Wno-error)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_NO_WX_FLAG -WX-)
endif()
if (LIBCXXABI_ENABLE_PEDANTIC)
append_if(LIBCXXABI_COMPILE_FLAGS LIBCXXABI_HAS_PEDANTIC_FLAG -pedantic)
endif()
# Get feature flags.
append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_FSTRICT_ALIASING_FLAG -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.
append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_EHSC_FLAG -EHsc)
append_if(LIBCXXABI_C_FLAGS LIBCXXABI_HAS_FUNWIND_TABLES -funwind-tables)
else()
add_definitions(-D_LIBCXXABI_NO_EXCEPTIONS)
append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_NO_EXCEPTIONS_FLAG -fno-exceptions)
append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_NO_EHS_FLAG -EHs-)
append_if(LIBCXXABI_CXX_FLAGS LIBCXXABI_HAS_NO_EHA_FLAG -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 (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXXABI_ENABLE_SHARED)
# Need to allow unresolved symbols if this is to work with shared library builds
if (APPLE)
add_link_flags("-undefined dynamic_lookup")
else()
# Relax this restriction from HandleLLVMOptions
string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
endif()
endif()
if (LIBCXXABI_HAS_PTHREAD_API)
add_definitions(-D_LIBCPP_HAS_THREAD_API_PTHREAD)
endif()
if (LIBCXXABI_HAS_EXTERNAL_THREAD_API)
add_definitions(-D_LIBCPP_HAS_THREAD_API_EXTERNAL)
endif()
if (LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY)
add_definitions(-D_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
endif()
if (MSVC)
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
endif()
# Define LIBCXXABI_USE_LLVM_UNWINDER for conditional compilation.
if (LIBCXXABI_USE_LLVM_UNWINDER)
add_definitions(-DLIBCXXABI_USE_LLVM_UNWINDER=1)
endif()
if (LIBCXXABI_SILENT_TERMINATE)
add_definitions(-DLIBCXXABI_SILENT_TERMINATE=1)
endif()
string(REPLACE ";" " " LIBCXXABI_CXX_FLAGS "${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
NO_DEFAULT_PATH
)
find_path(
LIBCXXABI_LIBUNWIND_SOURCES
libunwind_ext.h
PATHS ${LIBCXXABI_LIBUNWIND_PATH}/src/
${LIBCXXABI_LIBUNWIND_INCLUDES}/../src/
${LLVM_MAIN_SRC_DIR}/projects/libunwind/src/
${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/src/
NO_DEFAULT_PATH
)
if (LIBCXXABI_LIBUNWIND_SOURCES STREQUAL "LIBCXXABI_LIBUNWIND_SOURCES-NOTFOUND")
message(WARNING "LIBCXXABI_LIBUNWIND_SOURCES was not specified and couldn't be infered.")
set(LIBCXXABI_LIBUNWIND_SOURCES "")
endif()
if (NOT LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND")
include_directories("${LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL}")
endif()
if (NOT LIBCXXABI_LIBUNWIND_SOURCES STREQUAL "")
include_directories("${LIBCXXABI_LIBUNWIND_SOURCES}")
endif()
endif()
# Add source code. This also contains all of the logic for deciding linker flags
# soname, etc...
add_subdirectory(src)
if (NOT LIBCXXABI_INCLUDE_TESTS OR (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()
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