+#ifndef elf_backend_got_elt_size
+#define elf_backend_got_elt_size _bfd_elf_default_got_elt_size
+#endif
+#ifndef elf_backend_obj_attrs_vendor
+#define elf_backend_obj_attrs_vendor NULL
+#endif
+#ifndef elf_backend_obj_attrs_section
+#define elf_backend_obj_attrs_section NULL
+#endif
+#ifndef elf_backend_obj_attrs_arg_type
+#define elf_backend_obj_attrs_arg_type NULL
+#endif
+#ifndef elf_backend_obj_attrs_section_type
+#define elf_backend_obj_attrs_section_type SHT_GNU_ATTRIBUTES
+#endif
+#ifndef elf_backend_obj_attrs_order
+#define elf_backend_obj_attrs_order NULL
+#endif
+#ifndef elf_backend_obj_attrs_handle_unknown
+#define elf_backend_obj_attrs_handle_unknown NULL
+#endif
+#ifndef elf_backend_parse_gnu_properties
+#define elf_backend_parse_gnu_properties NULL
+#endif
+#ifndef elf_backend_merge_gnu_properties
+#define elf_backend_merge_gnu_properties NULL
+#endif
+#ifndef elf_backend_setup_gnu_properties
+#define elf_backend_setup_gnu_properties _bfd_elf_link_setup_gnu_properties
+#endif
+#ifndef elf_backend_static_tls_alignment
+#define elf_backend_static_tls_alignment 1
+#endif