Fix building against libxml2 2.12.0 and above

libcmis.spec

@@ -8,6 +8,8 @@ Summary: A C/C++ client library for CM interfaces
 License: GPL-2.0-or-later OR LGPL-2.1-or-later OR MPL-1.1
 URL: https://github.com/tdf/libcmis
 Source: https://github.com/tdf/libcmis/releases/download/v%{version}/%{name}-%{version}.tar.xz
+# https://github.com/tdf/libcmis/issues/51
+Patch:  libxmis-0.6.2-libxml2-2.12.0-includes.patch
 
 BuildRequires: boost-devel
 BuildRequires: gcc-c++

libxmis-0.6.2-libxml2-2.12.0-includes.patch

@@ -0,0 +1,23 @@
+From 72618e63433c7243e4d9e79a638f19a09402eecc Mon Sep 17 00:00:00 2001
+From: Andreas Sturmlechner <asturm@gentoo.org>
+Date: Tue, 21 Nov 2023 23:10:07 +0100
+Subject: [PATCH] Fix build with libxml2-2.12 (missing include)
+
+See also: https://github.com/tdf/libcmis/issues/51
+Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>
+---
+ inc/libcmis/xml-utils.hxx | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/inc/libcmis/xml-utils.hxx b/inc/libcmis/xml-utils.hxx
+index 929385e1..9bd99aed 100644
+--- a/inc/libcmis/xml-utils.hxx
++++ b/inc/libcmis/xml-utils.hxx
+@@ -34,6 +34,7 @@
+ #include <string>
+ 
+ #include <boost/date_time.hpp>
++#include <libxml/parser.h>
+ #include <libxml/tree.h>
+ #include <libxml/xpathInternals.h>
+ #include <libxml/xmlwriter.h>