tree schema REFACTOR move ext definitions to plugins_exts header
diff --git a/src/xpath.c b/src/xpath.c
index 49b87d6..1d5ad53 100644
--- a/src/xpath.c
+++ b/src/xpath.c
@@ -32,6 +32,7 @@
 #include "out.h"
 #include "parser_data.h"
 #include "path.h"
+#include "plugins_exts/metadata.h"
 #include "plugins_types.h"
 #include "printer_data.h"
 #include "schema_compile_node.h"