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# Build for the AddressSanitizer runtime support library.
set(ASAN_SOURCES
asan_allocator.cc
asan_activation.cc
asan_debugging.cc
asan_fake_stack.cc
asan_flags.cc
asan_globals.cc
asan_interceptors.cc
asan_linux.cc
asan_mac.cc
asan_malloc_linux.cc
asan_malloc_mac.cc
asan_malloc_win.cc
asan_memory_profile.cc
asan_poisoning.cc
asan_posix.cc
asan_report.cc
asan_rtl.cc
asan_stack.cc
asan_stats.cc
asan_suppressions.cc
asan_thread.cc
asan_win.cc)
set(ASAN_CXX_SOURCES
asan_new_delete.cc)
set(ASAN_PREINIT_SOURCES
asan_preinit.cc)
include_directories(..)
set(ASAN_CFLAGS ${SANITIZER_COMMON_CFLAGS})
append_rtti_flag(OFF ASAN_CFLAGS)
set(ASAN_COMMON_DEFINITIONS
ASAN_HAS_EXCEPTIONS=1)
set(ASAN_DYNAMIC_LINK_FLAGS)
if(ANDROID)
list(APPEND ASAN_COMMON_DEFINITIONS
ASAN_LOW_MEMORY=1)
# On Android, -z global does not do what it is documented to do.
# On Android, -z global moves the library ahead in the lookup order,
# placing it right after the LD_PRELOADs. This is used to compensate for the fact
# that Android linker does not look at the dependencies of the main executable
# that aren't dependencies of the current DSO when resolving symbols from said DSO.
# As a net result, this allows running ASan executables without LD_PRELOAD-ing the
# ASan runtime library.
# The above is applicable to L MR1 or newer.
if (COMPILER_RT_HAS_Z_GLOBAL)
list(APPEND ASAN_DYNAMIC_LINK_FLAGS -Wl,-z,global)
endif()
endif()
set(ASAN_DYNAMIC_DEFINITIONS
${ASAN_COMMON_DEFINITIONS} ASAN_DYNAMIC=1)
append_list_if(WIN32 INTERCEPTION_DYNAMIC_CRT ASAN_DYNAMIC_DEFINITIONS)
set(ASAN_DYNAMIC_CFLAGS ${ASAN_CFLAGS})
append_list_if(COMPILER_RT_HAS_FTLS_MODEL_INITIAL_EXEC
-ftls-model=initial-exec ASAN_DYNAMIC_CFLAGS)
append_list_if(MSVC /DEBUG ASAN_DYNAMIC_LINK_FLAGS)
append_list_if(COMPILER_RT_HAS_LIBC c ASAN_DYNAMIC_LIBS)
append_list_if(COMPILER_RT_HAS_LIBDL dl ASAN_DYNAMIC_LIBS)
append_list_if(COMPILER_RT_HAS_LIBRT rt ASAN_DYNAMIC_LIBS)
append_list_if(COMPILER_RT_HAS_LIBM m ASAN_DYNAMIC_LIBS)
append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread ASAN_DYNAMIC_LIBS)
append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ ASAN_DYNAMIC_LIBS)
append_list_if(COMPILER_RT_HAS_LIBLOG log ASAN_DYNAMIC_LIBS)
# Compile ASan sources into an object library.
add_compiler_rt_object_libraries(RTAsan_dynamic
OS ${SANITIZER_COMMON_SUPPORTED_OS}
ARCHS ${ASAN_SUPPORTED_ARCH}
SOURCES ${ASAN_SOURCES} ${ASAN_CXX_SOURCES}
CFLAGS ${ASAN_DYNAMIC_CFLAGS}
DEFS ${ASAN_DYNAMIC_DEFINITIONS})
if(NOT APPLE)
add_compiler_rt_object_libraries(RTAsan
ARCHS ${ASAN_SUPPORTED_ARCH}
SOURCES ${ASAN_SOURCES} CFLAGS ${ASAN_CFLAGS}
DEFS ${ASAN_COMMON_DEFINITIONS})
add_compiler_rt_object_libraries(RTAsan_cxx
ARCHS ${ASAN_SUPPORTED_ARCH}
SOURCES ${ASAN_CXX_SOURCES} CFLAGS ${ASAN_CFLAGS}
DEFS ${ASAN_COMMON_DEFINITIONS})
add_compiler_rt_object_libraries(RTAsan_preinit
ARCHS ${ASAN_SUPPORTED_ARCH}
SOURCES ${ASAN_PREINIT_SOURCES} CFLAGS ${ASAN_CFLAGS}
DEFS ${ASAN_COMMON_DEFINITIONS})
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/dummy.cc "")
add_compiler_rt_object_libraries(RTAsan_dynamic_version_script_dummy
ARCHS ${ASAN_SUPPORTED_ARCH}
SOURCES ${CMAKE_CURRENT_BINARY_DIR}/dummy.cc
CFLAGS ${ASAN_DYNAMIC_CFLAGS}
DEFS ${ASAN_DYNAMIC_DEFINITIONS})
endif()
# Build ASan runtimes shipped with Clang.
add_custom_target(asan)
set_target_properties(asan PROPERTIES FOLDER "Compiler-RT Misc")
if(APPLE)
add_compiler_rt_runtime(clang_rt.asan
SHARED
OS ${SANITIZER_COMMON_SUPPORTED_OS}
ARCHS ${ASAN_SUPPORTED_ARCH}
OBJECT_LIBS RTAsan_dynamic
RTInterception
RTSanitizerCommon
RTSanitizerCommonLibc
RTLSanCommon
RTUbsan
CFLAGS ${ASAN_DYNAMIC_CFLAGS}
DEFS ${ASAN_DYNAMIC_DEFINITIONS}
PARENT_TARGET asan)
else()
# Build separate libraries for each target.
set(ASAN_COMMON_RUNTIME_OBJECT_LIBS
RTInterception
RTSanitizerCommon
RTSanitizerCommonLibc
RTLSanCommon
RTUbsan)
add_compiler_rt_runtime(clang_rt.asan
STATIC
ARCHS ${ASAN_SUPPORTED_ARCH}
OBJECT_LIBS RTAsan_preinit
RTAsan
${ASAN_COMMON_RUNTIME_OBJECT_LIBS}
CFLAGS ${ASAN_CFLAGS}
DEFS ${ASAN_COMMON_DEFINITIONS}
PARENT_TARGET asan)
add_compiler_rt_runtime(clang_rt.asan_cxx
STATIC
ARCHS ${ASAN_SUPPORTED_ARCH}
OBJECT_LIBS RTAsan_cxx
RTUbsan_cxx
CFLAGS ${ASAN_CFLAGS}
DEFS ${ASAN_COMMON_DEFINITIONS}
PARENT_TARGET asan)
add_compiler_rt_runtime(clang_rt.asan-preinit
STATIC
ARCHS ${ASAN_SUPPORTED_ARCH}
OBJECT_LIBS RTAsan_preinit
CFLAGS ${ASAN_CFLAGS}
DEFS ${ASAN_COMMON_DEFINITIONS}
PARENT_TARGET asan)
foreach(arch ${ASAN_SUPPORTED_ARCH})
if (UNIX AND NOT ${arch} MATCHES "i386|i686")
add_sanitizer_rt_version_list(clang_rt.asan-dynamic-${arch}
LIBS clang_rt.asan-${arch} clang_rt.asan_cxx-${arch}
EXTRA asan.syms.extra)
set(VERSION_SCRIPT_FLAG
-Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/clang_rt.asan-dynamic-${arch}.vers)
set_source_files_properties(
${CMAKE_CURRENT_BINARY_DIR}/dummy.cc
PROPERTIES
OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/clang_rt.asan-dynamic-${arch}.vers)
else()
set(VERSION_SCRIPT_FLAG)
endif()
add_compiler_rt_runtime(clang_rt.asan
SHARED
ARCHS ${arch}
OBJECT_LIBS ${ASAN_COMMON_RUNTIME_OBJECT_LIBS}
RTAsan_dynamic
# The only purpose of RTAsan_dynamic_version_script_dummy is to carry
# a dependency of the shared runtime on the version script. With CMake
# 3.1 or later it can be replaced with a straightforward
# add_dependencies(clang_rt.asan-dynamic-${arch} clang_rt.asan-dynamic-${arch}-version-list)
RTAsan_dynamic_version_script_dummy
RTUbsan_cxx
CFLAGS ${ASAN_DYNAMIC_CFLAGS}
LINKFLAGS ${ASAN_DYNAMIC_LINK_FLAGS}
${VERSION_SCRIPT_FLAG}
LINK_LIBS ${ASAN_DYNAMIC_LIBS}
DEFS ${ASAN_DYNAMIC_DEFINITIONS}
PARENT_TARGET asan)
if (UNIX AND NOT ${arch} MATCHES "i386|i686")
add_sanitizer_rt_symbols(clang_rt.asan_cxx
ARCHS ${arch})
add_dependencies(asan clang_rt.asan_cxx-${arch}-symbols)
add_sanitizer_rt_symbols(clang_rt.asan
ARCHS ${arch}
EXTRA asan.syms.extra)
add_dependencies(asan clang_rt.asan-${arch}-symbols)
endif()
if (WIN32)
add_compiler_rt_runtime(clang_rt.asan_dll_thunk
STATIC
ARCHS ${arch}
SOURCES asan_win_dll_thunk.cc
$<TARGET_OBJECTS:RTInterception.${arch}>
CFLAGS ${ASAN_CFLAGS} -DASAN_DLL_THUNK
DEFS ${ASAN_COMMON_DEFINITIONS}
PARENT_TARGET asan)
add_compiler_rt_runtime(clang_rt.asan_dynamic_runtime_thunk
STATIC
ARCHS ${arch}
SOURCES asan_win_dynamic_runtime_thunk.cc
CFLAGS ${ASAN_CFLAGS} -DASAN_DYNAMIC_RUNTIME_THUNK -Zl
DEFS ${ASAN_COMMON_DEFINITIONS}
PARENT_TARGET asan)
endif()
endforeach()
endif()
add_compiler_rt_resource_file(asan_blacklist asan_blacklist.txt asan)
add_dependencies(compiler-rt asan)
add_subdirectory(scripts)
if(COMPILER_RT_INCLUDE_TESTS)
add_subdirectory(tests)
endif()