Missing include.

diff --git a/src/lib/server.h b/src/lib/server.h
index 56a1fdab9f20d133f9436c0c028015a8e13a4339..77b51d0798ff11da731783b63f9c624301540be1 100644 (file)
--- a/src/lib/server.h
+++ b/src/lib/server.h
@@ -29,6 +29,7 @@
 #include <boost/thread.hpp>
 #include <boost/asio.hpp>
 #include <boost/thread/condition.hpp>
+#include <boost/optional.hpp>
 #include <libxml++/libxml++.h>
 #include "log.h"