+#ifdef HAVE_CONNECTION_CHECK_WRITABLE
+ zend_declare_class_constant_long(php_pqconn_class_entry, ZEND_STRL("CHECK_WRITABLE"), CONNECTION_CHECK_WRITABLE);
+#endif
+#ifdef HAVE_CONNECTION_CONSUME
+ zend_declare_class_constant_long(php_pqconn_class_entry, ZEND_STRL("CONSUME"), CONNECTION_CONSUME);
+#endif
+#ifdef HAVE_CONNECTION_GSS_STARTUP
+ zend_declare_class_constant_long(php_pqconn_class_entry, ZEND_STRL("GSS_STARTUP"), CONNECTION_GSS_STARTUP);
+#endif