include (CMakePushCheckState) cmake_push_check_state () if (CMAKE_SYSTEM MATCHES "Linux" AND NOT ARCH_ARM) option (USE_INTERNAL_UNWIND_LIBRARY "Set to FALSE to use system unwind library instead of bundled" ${NOT_UNBUNDLED}) else () option (USE_INTERNAL_UNWIND_LIBRARY "Set to FALSE to use system unwind library instead of bundled" OFF) endif () if (NOT USE_INTERNAL_UNWIND_LIBRARY) find_library (UNWIND_LIBRARY unwind) find_path (UNWIND_INCLUDE_DIR NAMES unwind.h PATHS ${UNWIND_INCLUDE_PATHS}) include (CheckCXXSourceCompiles) set(CMAKE_REQUIRED_INCLUDES ${UNWIND_INCLUDE_DIR}) set(CMAKE_REQUIRED_LIBRARIES ${UNWIND_LIBRARY}) check_cxx_source_compiles(" #include #define UNW_LOCAL_ONLY #include int main () { ucontext_t context; unw_cursor_t cursor; unw_init_local_signal(&cursor, &context); return 0; } " HAVE_UNWIND_INIT_LOCAL_SIGNAL) if (NOT HAVE_UNWIND_INIT_LOCAL_SIGNAL) set(UNWIND_LIBRARY "") set(UNWIND_INCLUDE_DIR "") endif () endif () if (UNWIND_LIBRARY AND UNWIND_INCLUDE_DIR) set (USE_UNWIND 1) elseif (CMAKE_SYSTEM MATCHES "Linux" AND NOT ARCH_ARM) set (USE_INTERNAL_UNWIND_LIBRARY 1) set (UNWIND_INCLUDE_DIR "${ClickHouse_SOURCE_DIR}/contrib/libunwind/include") set (UNWIND_LIBRARY unwind) set (USE_UNWIND 1) endif () message (STATUS "Using unwind=${USE_UNWIND}: ${UNWIND_INCLUDE_DIR} : ${UNWIND_LIBRARY}") cmake_pop_check_state ()