AC_CHECK_HEADER([xmltooling/XMLToolingConfig.h],,AC_MSG_ERROR([unable to find xmltooling header files]))
AC_TRY_LINK(
[#include <xmltooling/XMLToolingConfig.h>],
AC_CHECK_HEADER([xmltooling/XMLToolingConfig.h],,AC_MSG_ERROR([unable to find xmltooling header files]))
AC_TRY_LINK(
[#include <xmltooling/XMLToolingConfig.h>],