-# define __libc_cleanup_push(function, arg) /* empty */
-# define __libc_cleanup_pop(execute) /* empty */
-#endif
-
-#if !_LIBC
-# define __getline getline
-# define __tcgetattr tcgetattr
+# if !HAVE_DECL_FFLUSH_UNLOCKED
+# undef fflush_unlocked
+# define fflush_unlocked(x) fflush (x)
+# endif
+# if !HAVE_DECL_FLOCKFILE
+# undef flockfile
+# define flockfile(x) ((void) 0)
+# endif
+# if !HAVE_DECL_FUNLOCKFILE
+# undef funlockfile
+# define funlockfile(x) ((void) 0)
+# endif
+# if !HAVE_DECL_FPUTS_UNLOCKED
+# undef fputs_unlocked
+# define fputs_unlocked(str,stream) fputs (str, stream)
+# endif
+# if !HAVE_DECL_PUTC_UNLOCKED
+# undef putc_unlocked
+# define putc_unlocked(c,stream) putc (c, stream)
+# endif