-// At least Irix needs this
-#ifdef SG_HAVE_NATIVE_SGI_COMPILERS
-#include <char_traits.h>
-SG_USING_STD(char_traits);
-#endif
-
-#ifdef SG_HAVE_STD_INCLUDES
-
-# include <streambuf>
-# include <istream>
-
-# define ios_openmode ios_base::openmode
-# define ios_in ios_base::in
-# define ios_out ios_base::out
-# define ios_app ios_base::app
-# define ios_binary ios_base::binary
-
-# define ios_seekdir ios_base::seekdir