make --enable-osgviewer the default

[flightgear.git] / src / Cockpit / panel_io.hxx

diff --git a/src/Cockpit/panel_io.hxx b/src/Cockpit/panel_io.hxx
index 839f0a810fd67295bffb429418d4af9f94ec4fee..4db99ea18ffe5107b89d6d4eb61e0ac8345d5a4f 100644 (file)
--- a/src/Cockpit/panel_io.hxx
+++ b/src/Cockpit/panel_io.hxx
@@ -25,15 +25,17 @@
 #  include <config.h>
 #endif
 
-#ifdef HAVE_WINDOWS_H          
+#ifdef HAVE_WINDOWS_H
 #  include <windows.h>
 #endif
 
 #include <simgear/compiler.h>
 
 #include STL_IOSTREAM
+#include STL_STRING
 
 SG_USING_STD(istream);
+SG_USING_STD(string);
 
 class FGPanel;