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# Build for the ThreadSanitizer runtime support library.
set(TSAN_CFLAGS ${SANITIZER_COMMON_CFLAGS})
# SANITIZER_COMMON_CFLAGS contains -fPIC, but it's performance-critical for
# TSan runtime to be built with -fPIE to reduce the number of register spills.
# On FreeBSD however it provokes linkage issue thus we disable it.
if(NOT CMAKE_SYSTEM MATCHES "FreeBSD")
append_list_if(COMPILER_RT_HAS_FPIE_FLAG -fPIE TSAN_CFLAGS)
endif()
append_rtti_flag(OFF TSAN_CFLAGS)
if(COMPILER_RT_TSAN_DEBUG_OUTPUT)
# Add extra debug information to TSan runtime. This configuration is rarely
# used, but we need to support it so that debug output will not bitrot.
list(APPEND TSAN_CFLAGS -DTSAN_DEBUG_OUTPUT=2)
endif()
# Add the actual runtime library.
option(TSAN_USE_OLD_RUNTIME "Use the old tsan runtime (temporal option for emergencies)." OFF)
if (TSAN_USE_OLD_RUNTIME)
add_subdirectory(rtl-old)
else()
add_subdirectory(rtl)
endif()
# Build libcxx instrumented with TSan.
if(COMPILER_RT_LIBCXX_PATH AND
COMPILER_RT_LIBCXXABI_PATH AND
COMPILER_RT_TEST_COMPILER_ID STREQUAL "Clang" AND
NOT ANDROID)
set(libcxx_tsan_deps)
foreach(arch ${TSAN_SUPPORTED_ARCH})
get_target_flags_for_arch(${arch} TARGET_CFLAGS)
set(LIBCXX_PREFIX ${CMAKE_CURRENT_BINARY_DIR}/libcxx_tsan_${arch})
add_custom_libcxx(libcxx_tsan_${arch} ${LIBCXX_PREFIX}
DEPS ${TSAN_RUNTIME_LIBRARIES}
CFLAGS ${TARGET_CFLAGS} -fsanitize=thread
USE_TOOLCHAIN)
list(APPEND libcxx_tsan_deps libcxx_tsan_${arch}-build)
endforeach()
add_custom_target(libcxx_tsan DEPENDS ${libcxx_tsan_deps})
set_target_properties(libcxx_tsan PROPERTIES FOLDER "Compiler-RT Misc")
endif()
if(COMPILER_RT_INCLUDE_TESTS)
add_subdirectory(tests)
endif()
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