diff -r -u -N ddb_medialib/main_widget.cpp ddb_medialib-iostream/main_widget.cpp
--- ddb_medialib/main_widget.cpp	2018-09-30 22:15:22.851442464 +0200
+++ ddb_medialib-iostream/main_widget.cpp	2018-09-30 22:14:59.861088268 +0200
@@ -3,6 +3,7 @@
 #include "settings_dlg.hpp"
 #include "medialib.h"
 
+#include <iostream>
 #include <fstream>
 
 struct ByDirectoryColumns : Gtk::TreeModel::ColumnRecord
@@ -457,4 +458,4 @@
     {
         locked->onChanged(/*restart*/true);
     }
-}
\ No newline at end of file
+}
diff -r -u -N ddb_medialib/scan_thread.cpp ddb_medialib-iostream/scan_thread.cpp
--- ddb_medialib/scan_thread.cpp	2018-09-30 22:15:22.851442464 +0200
+++ ddb_medialib-iostream/scan_thread.cpp	2018-09-30 22:14:59.861088268 +0200
@@ -4,6 +4,7 @@
 #include <boost/range.hpp>
 #include <boost/scope_exit.hpp>
 
+#include <iostream>
 #include <thread>
 
 namespace pl = std::placeholders;