+
+ # first try <libxml/parser.h> which is the new way...
+ #
+ AC_CHECK_X_HEADER(libxml/xmlIO.h, [have_xml=yes],,
+ [#include <libxml/parser.h>])
+
+ # if that didn't work, then try just <parser.h> which is the old way...
+ #
+ if test "$have_xml" = no; then
+ AC_CHECK_X_HEADER(xmlIO.h, [have_xml=yes; have_old_xml=yes],,
+ [#include <parser.h>])
+ fi
+