+#ifndef TARGET_UNWIND_TABLES_DEFAULT
+#define TARGET_UNWIND_TABLES_DEFAULT false
+#endif
+
+#ifndef TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME
+#define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME 0
+#endif
+
+#ifndef TARGET_HANDLE_PRAGMA_EXTERN_PREFIX
+#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 0
+#endif
+
+#ifndef TARGET_SECONDARY_RELOAD
+#define TARGET_SECONDARY_RELOAD default_secondary_reload
+#endif
+
+/* C specific. */
+#ifndef TARGET_C_MODE_FOR_SUFFIX
+#define TARGET_C_MODE_FOR_SUFFIX default_mode_for_suffix
+#endif
+
+#define TARGET_C \
+ { \
+ TARGET_C_MODE_FOR_SUFFIX \
+ }
+
+/* C++ specific. */
+#ifndef TARGET_CXX_GUARD_TYPE
+#define TARGET_CXX_GUARD_TYPE default_cxx_guard_type
+#endif
+
+#ifndef TARGET_CXX_GUARD_MASK_BIT
+#define TARGET_CXX_GUARD_MASK_BIT hook_bool_void_false
+#endif
+
+#ifndef TARGET_CXX_GET_COOKIE_SIZE
+#define TARGET_CXX_GET_COOKIE_SIZE default_cxx_get_cookie_size
+#endif
+
+#ifndef TARGET_CXX_COOKIE_HAS_SIZE
+#define TARGET_CXX_COOKIE_HAS_SIZE hook_bool_void_false
+#endif
+
+#ifndef TARGET_CXX_IMPORT_EXPORT_CLASS
+#define TARGET_CXX_IMPORT_EXPORT_CLASS NULL
+#endif
+
+#ifndef TARGET_CXX_CDTOR_RETURNS_THIS
+#define TARGET_CXX_CDTOR_RETURNS_THIS hook_bool_void_false
+#endif
+
+#ifndef TARGET_CXX_KEY_METHOD_MAY_BE_INLINE
+#define TARGET_CXX_KEY_METHOD_MAY_BE_INLINE hook_bool_void_true
+#endif
+
+#ifndef TARGET_CXX_DETERMINE_CLASS_DATA_VISIBILITY
+#define TARGET_CXX_DETERMINE_CLASS_DATA_VISIBILITY hook_void_tree
+#endif
+
+#ifndef TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT
+#define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_true
+#endif
+
+#ifndef TARGET_CXX_LIBRARY_RTTI_COMDAT
+#define TARGET_CXX_LIBRARY_RTTI_COMDAT hook_bool_void_true
+#endif
+
+#ifndef TARGET_CXX_USE_AEABI_ATEXIT
+#define TARGET_CXX_USE_AEABI_ATEXIT hook_bool_void_false
+#endif
+
+#ifndef TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT
+#define TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT hook_bool_void_false
+#endif
+
+#ifndef TARGET_CXX_ADJUST_CLASS_AT_DEFINITION
+#define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION hook_void_tree
+#endif
+
+#define TARGET_CXX \
+ { \
+ TARGET_CXX_GUARD_TYPE, \
+ TARGET_CXX_GUARD_MASK_BIT, \
+ TARGET_CXX_GET_COOKIE_SIZE, \
+ TARGET_CXX_COOKIE_HAS_SIZE, \
+ TARGET_CXX_IMPORT_EXPORT_CLASS, \
+ TARGET_CXX_CDTOR_RETURNS_THIS, \
+ TARGET_CXX_KEY_METHOD_MAY_BE_INLINE, \
+ TARGET_CXX_DETERMINE_CLASS_DATA_VISIBILITY, \
+ TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT, \
+ TARGET_CXX_LIBRARY_RTTI_COMDAT, \
+ TARGET_CXX_USE_AEABI_ATEXIT, \
+ TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT, \
+ TARGET_CXX_ADJUST_CLASS_AT_DEFINITION \
+ }
+