#include <string>
#include <list>
-#include <fstream>
-
-FG_USING_STD(list);
-FG_USING_STD(string);
-FG_USING_STD(ifstream);
+#include STL_FSTREAM
+
+SG_USING_STD(list);
+SG_USING_STD(string);
+SG_USING_STD(getline);
+#if !defined (SG_HAVE_NATIVE_SGI_COMPILERS)
+SG_USING_STD(ifstream);
+#endif
#define DELIMITERS " \t"
#define COMMENT "#"