Upstream-status: Not presented upstream.

--- clucene-core-2.3.3.4.orig/src/core/CLucene/document/DateTools.cpp	1970-01-01 01:00:01.000000000 +0100
+++ clucene-core-2.3.3.4/src/core/CLucene/document/DateTools.cpp	2025-01-01 17:41:36.055237798 +0100
@@ -9,6 +9,8 @@
 #include "DateTools.h"
 #include "CLucene/util/Misc.h"
 
+#include <ctime>
+
 CL_NS_USE(util)
 CL_NS_DEF(document)
 
