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+/* Declarations for getopt.
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+ Copyright (C) 1989,90,91,92,93,94,96,97,98 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Library General Public License as
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+ published by the Free Software Foundation; either version 2 of the
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+ License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Library General Public License for more details.
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+
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+ You should have received a copy of the GNU Library General Public
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+ License along with the GNU C Library; see the file COPYING.LIB. If not,
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+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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+ Boston, MA 02111-1307, USA. */
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+
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+#ifndef _GETOPT_H
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+
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+#ifndef __need_getopt
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+# define _GETOPT_H 1
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+#endif
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+/* For communication from `getopt' to the caller.
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+ When `getopt' finds an option that takes an argument,
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+ the argument value is returned here.
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+ Also, when `ordering' is RETURN_IN_ORDER,
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+ each non-option ARGV-element is returned here. */
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+
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+extern char *optarg;
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+
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+/* Index in ARGV of the next element to be scanned.
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+ This is used for communication to and from the caller
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+ and for communication between successive calls to `getopt'.
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+
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+ On entry to `getopt', zero means this is the first call; initialize.
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+
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+ When `getopt' returns -1, this is the index of the first of the
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+ non-option elements that the caller should itself scan.
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+
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+ Otherwise, `optind' communicates from one call to the next
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+ how much of ARGV has been scanned so far. */
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+
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+extern int optind;
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+
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+/* Callers store zero here to inhibit the error message `getopt' prints
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+ for unrecognized options. */
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+
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+extern int opterr;
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+
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+/* Set to an option character which was unrecognized. */
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+
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+extern int optopt;
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+
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+#ifndef __need_getopt
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+/* Describe the long-named options requested by the application.
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+ The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
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+ of `struct option' terminated by an element containing a name which is
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+ zero.
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+
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+ The field `has_arg' is:
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+ no_argument (or 0) if the option does not take an argument,
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+ required_argument (or 1) if the option requires an argument,
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+ optional_argument (or 2) if the option takes an optional argument.
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+
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+ If the field `flag' is not NULL, it points to a variable that is set
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+ to the value given in the field `val' when the option is found, but
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+ left unchanged if the option is not found.
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+
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+ To have a long-named option do something other than set an `int' to
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+ a compiled-in constant, such as set a value from `optarg', set the
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+ option's `flag' field to zero and its `val' field to a nonzero
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+ value (the equivalent single-letter option character, if there is
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+ one). For long options that have a zero `flag' field, `getopt'
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+ returns the contents of the `val' field. */
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+
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+struct option
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+{
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+# if defined __STDC__ && __STDC__
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+ const char *name;
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+# else
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+ char *name;
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+# endif
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+ /* has_arg can't be an enum because some compilers complain about
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+ type mismatches in all the code that assumes it is an int. */
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+ int has_arg;
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+ int *flag;
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+ int val;
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+};
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+
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+/* Names for the values of the `has_arg' field of `struct option'. */
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+
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+# define no_argument 0
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+# define required_argument 1
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+# define optional_argument 2
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+#endif /* need getopt */
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+
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+
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+/* Get definitions and prototypes for functions to process the
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+ arguments in ARGV (ARGC of them, minus the program name) for
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+ options given in OPTS.
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+
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+ Return the option character from OPTS just read. Return -1 when
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+ there are no more options. For unrecognized options, or options
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+ missing arguments, `optopt' is set to the option letter, and '?' is
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+ returned.
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+
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+ The OPTS string is a list of characters which are recognized option
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+ letters, optionally followed by colons, specifying that that letter
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+ takes an argument, to be placed in `optarg'.
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+
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+ If a letter in OPTS is followed by two colons, its argument is
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+ optional. This behavior is specific to the GNU `getopt'.
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+
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+ The argument `--' causes premature termination of argument
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+ scanning, explicitly telling `getopt' that there are no more
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+ options.
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+
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+ If OPTS begins with `--', then non-option arguments are treated as
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+ arguments to the option '\0'. This behavior is specific to the GNU
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+ `getopt'. */
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+
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+#if defined __STDC__ && __STDC__
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+# ifdef __GNU_LIBRARY__
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+/* Many other libraries have conflicting prototypes for getopt, with
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+ differences in the consts, in stdlib.h. To avoid compilation
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+ errors, only prototype getopt for the GNU C library. */
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+extern int getopt (int __argc, char *const *__argv, const char *__shortopts);
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+# else /* not __GNU_LIBRARY__ */
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+extern int getopt ();
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+# endif /* __GNU_LIBRARY__ */
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+
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+# ifndef __need_getopt
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+extern int getopt_long (int __argc, char *const *__argv, const char *__shortopts,
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+ const struct option *__longopts, int *__longind);
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+extern int getopt_long_only (int __argc, char *const *__argv,
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+ const char *__shortopts,
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+ const struct option *__longopts, int *__longind);
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+
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+/* Internal only. Users should not call this directly. */
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+extern int _getopt_internal (int __argc, char *const *__argv,
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+ const char *__shortopts,
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+ const struct option *__longopts, int *__longind,
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+ int __long_only);
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+# endif
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+#else /* not __STDC__ */
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+extern int getopt ();
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+# ifndef __need_getopt
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+extern int getopt_long ();
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+extern int getopt_long_only ();
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+
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+extern int _getopt_internal ();
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+# endif
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+#endif /* __STDC__ */
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+
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+#ifdef __cplusplus
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+}
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+#endif
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+
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+/* Make sure we later can get all the definitions and declarations. */
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+#undef __need_getopt
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+
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+#endif /* getopt.h */
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