diff -u -r ../gnucobol-3.1.2/libcob/mlio.c ./libcob/mlio.c
--- ../gnucobol-3.1.2/libcob/mlio.c	2020-12-23 10:51:14.000000000 +0000
+++ ./libcob/mlio.c	2024-05-16 12:21:31.327499360 +0000
@@ -32,6 +32,7 @@
 #include "coblocal.h"
 
 #if defined (WITH_XML2)
+#include <libxml/parser.h>
 #include <libxml/xmlversion.h>
 #include <libxml/xmlwriter.h>
 #include <libxml/uri.h>
