-FILE *xfopen (const char *name, const char *mode);
-int xfclose (FILE *ptr);
-
-/* Is SUFFIX ending STRING? */
-int strsuffix (const char* string, const char* suffix);
-
-/* Return a newly allocated string composed of the concatenation of
- STRING1, and STRING2. */
-char* stringappend (const char* string1, const char* string2);
-
-/* Prefix used to generate output file names. */
-extern char *short_base_name;
-
-/* Infix used to generate output file names (i.e., `.tab', or `_tab',
- or `'). */
-extern char *output_infix;
+FILE *xfopen (const char *name, char const *mode);
+void xfclose (FILE *ptr);
+FILE *xfdopen (int fd, char const *mode);