+AC_MSG_CHECKING([whether Xerces XMLString::release(XMLByte**) exists])
+AC_TRY_COMPILE([#include <xercesc/util/XMLString.hpp>],
+ [using namespace XERCES_CPP_NAMESPACE;
+ XMLByte* buf=NULL;
+ XMLString::release(&buf);
+ ],
+ [AC_MSG_RESULT([yes])]
+ [AC_DEFINE([OPENSAML_XERCESC_HAS_XMLBYTE_RELEASE], [1], [Define to 1 if Xerces XMLString includes XMLByte release.])],
+ [AC_MSG_RESULT([no])])