+/* Define default value for nds32_perf_ext2 */
+#undef NDS32_DEFAULT_PERF_EXT2
+
+/* Define default value for nds32_string_ext */
+#undef NDS32_DEFAULT_STRING_EXT
+
+/* Define default value for nds32_zol_ext */
+#undef NDS32_DEFAULT_ZOL_EXT
+
+/* Define default value for nds32_linux_toolchain */
+#undef NDS32_LINUX_TOOLCHAIN
+
+/* Define if environ is not declared in system header files. */
+#undef NEED_DECLARATION_ENVIRON
+
+/* Define if errno is not declared in system header files. */
+#undef NEED_DECLARATION_ERRNO