diff -up clucene-core-2.3.3.4/src/test/search/TestIndexSearcher.cpp.usleep clucene-core-2.3.3.4/src/test/search/TestIndexSearcher.cpp

--- clucene-core-2.3.3.4/src/test/search/TestIndexSearcher.cpp.usleep	2011-03-16 19:21:07.000000000 -0500

+++ clucene-core-2.3.3.4/src/test/search/TestIndexSearcher.cpp	2014-10-07 19:35:20.854480798 -0500

@@ -4,6 +4,7 @@

 * Distributable under the terms of either the Apache License (Version 2.0) or

 * the GNU Lesser General Public License, as specified in the COPYING file.

 ------------------------------------------------------------------------------*/

+#include <unistd.h>

 #include "test.h"

 DEFINE_MUTEX(searchMutex);