make[1]: Entering directory `/home/szw/tool/xmlwrapp-0.7.0/src'
CXX libxmlwrapp_la-schema.lo
In file included from libxml/schema.cxx:38:
libxml/errors_impl.h:66: error: 'va_list' has not been declared
libxml/errors_impl.h:67: error: 'va_list' has not been declared