--- /dev/null
+#ifndef XSTRTOL_H_
+# define XSTRTOL_H_ 1
+
+# if HAVE_INTTYPES_H
+# include <inttypes.h> /* for uintmax_t */
+# endif
+
+# ifndef PARAMS
+# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
+# define PARAMS(Args) Args
+# else
+# define PARAMS(Args) ()
+# endif
+# endif
+
+# ifndef _STRTOL_ERROR
+enum strtol_error
+ {
+ LONGINT_OK, LONGINT_INVALID, LONGINT_INVALID_SUFFIX_CHAR, LONGINT_OVERFLOW
+ };
+typedef enum strtol_error strtol_error;
+# endif
+
+# define _DECLARE_XSTRTOL(name, type) \
+ strtol_error \
+ name PARAMS ((const char *s, char **ptr, int base, \
+ type *val, const char *valid_suffixes));
+_DECLARE_XSTRTOL (xstrtol, long int)
+_DECLARE_XSTRTOL (xstrtoul, unsigned long int)
+_DECLARE_XSTRTOL (xstrtoumax, uintmax_t)
+
+# define _STRTOL_ERROR(Exit_code, Str, Argument_type_string, Err) \
+ do \
+ { \
+ switch ((Err)) \
+ { \
+ case LONGINT_OK: \
+ abort (); \
+ \
+ case LONGINT_INVALID: \
+ error ((Exit_code), 0, "invalid %s `%s'", \
+ (Argument_type_string), (Str)); \
+ break; \
+ \
+ case LONGINT_INVALID_SUFFIX_CHAR: \
+ error ((Exit_code), 0, "invalid character following %s `%s'", \
+ (Argument_type_string), (Str)); \
+ break; \
+ \
+ case LONGINT_OVERFLOW: \
+ error ((Exit_code), 0, "%s `%s' too large", \
+ (Argument_type_string), (Str)); \
+ break; \
+ } \
+ } \
+ while (0)
+
+# define STRTOL_FATAL_ERROR(Str, Argument_type_string, Err) \
+ _STRTOL_ERROR (2, Str, Argument_type_string, Err)
+
+# define STRTOL_FAIL_WARN(Str, Argument_type_string, Err) \
+ _STRTOL_ERROR (0, Str, Argument_type_string, Err)
+
+#endif /* not XSTRTOL_H_ */