+/* we use gnu extensions */
+#undef _GNU_SOURCE
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+ calls it, or to nothing if 'inline' is not supported under any name. */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Firms major version number */
+#undef libfirm_VERSION_MAJOR
+
+/* Firms micro version number */
+#undef libfirm_VERSION_MICRO
+
+/* Firms minor version number */
+#undef libfirm_VERSION_MINOR
+
+/* Define to empty if the keyword `volatile' does not work. Warning: valid
+ code using `volatile' can become incorrect without. Disable with care. */
+#undef volatile