#include <simgear/compiler.h>
-#include STL_STRING
+#include <string>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sgstream.hxx>
#include "interpolater.hxx"
-SG_USING_STD(string);
+using std::string;
// Constructor -- starts with an empty table.
SGInterpTable::SGInterpTable()