+/*
+ * Define if your compiler has <hash_map>
+ */
+#undef HAVE_HASH_MAP
+/*
+ * Define if your compiler has <ext/hash_map>
+ */
+#undef HAVE_EXT_HASH_MAP
+/*
+ * Define if your compiler has std::hash_map/hash_set
+ */
+#undef HAVE_STD_HASH_MAP
+/*
+ * Define if your compiler has __gnu_cxx::hash_map/hash_set
+ */
+#undef HAVE_GNU_CXX_HASH_MAP