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#ifndef _GNU_GETOPT_H
#define _GNU_GETOPT_H 1
/* Declarations for GNU getopt. */
/* For communication from `getopt' to the caller.
When `getopt' finds an option that takes an argument,
the argument value is returned here.
Also, when `ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
extern char *optarg;
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
and for communication between successive calls to `getopt'.
On entry to `getopt', zero means this is the first call; initialize.
When `getopt' returns EOF, this is the index of the first of the
non-option elements that the caller should itself scan.
Otherwise, `optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
extern int optind;
/* Callers store zero here to inhibit the error message `getopt' prints
for unrecognized options. */
extern int opterr;
/* Set to an option character which was unrecognized. */
extern int optopt;
/* Describe the long-named options requested by the application.
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
of `struct option' terminated by an element containing a name which is
zero.
The field `has_arg' is:
no_argument (or 0) if the option does not take an argument,
required_argument (or 1) if the option requires an argument,
optional_argument (or 2) if the option takes an optional argument.
If the field `flag' is not NULL, it points to a variable that is set
to the value given in the field `val' when the option is found, but
left unchanged if the option is not found.
To have a long-named option do something other than set an `int' to
a compiled-in constant, such as set a value from `optarg', set the
option's `flag' field to zero and its `val' field to a nonzero
value (the equivalent single-letter option character, if there is
one). For long options that have a zero `flag' field, `getopt'
returns the contents of the `val' field. */
struct option
{
const char *name;
/* has_arg can't be an enum because some compilers complain about
type mismatches in all the code that assumes it is an int. */
int has_arg;
int *flag;
int val;
};
/* Names for the values of the `has_arg' field of `struct option'. */
#define no_argument 0
#define required_argument 1
#define optional_argument 2
#ifdef _____P
#undef _____P
#endif
#if defined (__STDC__) || defined (_AIX) \
|| (defined (__mips) && defined (_SYSTYPE_SVR4)) \
|| defined(WIN32) || defined(__cplusplus)
#define _____P(protos) protos
#else
#define _____P(protos) ()
#endif
/* Support declarations of C linkage in C++, for functions not declared in
C headers the way they should be. */
#ifndef __C_LINKAGE
#ifdef __cplusplus
# define __C_LINKAGE "C"
#else
# define __C_LINKAGE /* empty */
#endif
#endif /* not __C_LINKAGE */
extern __C_LINKAGE int gnu_getopt _____P((int argc, char *const *argv, const char *shortopts));
extern __C_LINKAGE int getopt_long _____P((int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind));
extern __C_LINKAGE int getopt_long_only _____P((int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind));
/* Internal only. Users should not call this directly. */
extern __C_LINKAGE int _getopt_internal _____P((int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind, int long_only));
#undef _____P
#endif
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