#include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
#ifdef HAVE_CONFIG_H
# include <config.h>
#include <vector>
-#include "fgfs.hxx"
#include "viewer.hxx"
SG_USING_STD(vector);
// Define a structure containing view information
-class FGViewMgr : public FGSubsystem
+class FGViewMgr : public SGSubsystem
{
public: