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source: kBuild/trunk/src/kmk/getopt.h@ 3387

Last change on this file since 3387 was 3262, checked in by bird, 6 years ago

kmk: rhel4 bootstrap hacking.

  • Property svn:eol-style set to native
File size: 4.5 KB
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[53]1/* Declarations for getopt.
[3140]2Copyright (C) 1989-2016 Free Software Foundation, Inc.
[53]3
[503]4NOTE: The canonical source of this file is maintained with the GNU C Library.
5Bugs can be reported to bug-glibc@gnu.org.
[53]6
[1993]7GNU Make is free software; you can redistribute it and/or modify it under the
8terms of the GNU General Public License as published by the Free Software
9Foundation; either version 3 of the License, or (at your option) any later
10version.
[53]11
[1993]12GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14A PARTICULAR PURPOSE. See the GNU General Public License for more details.
[53]15
[503]16You should have received a copy of the GNU General Public License along with
[1993]17this program. If not, see <http://www.gnu.org/licenses/>. */
[53]18
[3262]19#ifndef FAKES_NO_GETOPT_H /* bird: hack for rhel4 unistd.h dragging in getopt.h */
[53]20#ifndef _GETOPT_H
21#define _GETOPT_H 1
22
23#ifdef __cplusplus
24extern "C" {
25#endif
26
27/* For communication from `getopt' to the caller.
28 When `getopt' finds an option that takes an argument,
29 the argument value is returned here.
30 Also, when `ordering' is RETURN_IN_ORDER,
31 each non-option ARGV-element is returned here. */
32
33extern char *optarg;
34
35/* Index in ARGV of the next element to be scanned.
36 This is used for communication to and from the caller
37 and for communication between successive calls to `getopt'.
38
39 On entry to `getopt', zero means this is the first call; initialize.
40
41 When `getopt' returns -1, this is the index of the first of the
42 non-option elements that the caller should itself scan.
43
44 Otherwise, `optind' communicates from one call to the next
45 how much of ARGV has been scanned so far. */
46
47extern int optind;
48
49/* Callers store zero here to inhibit the error message `getopt' prints
50 for unrecognized options. */
51
52extern int opterr;
53
54/* Set to an option character which was unrecognized. */
55
56extern int optopt;
57
58/* Describe the long-named options requested by the application.
59 The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
60 of `struct option' terminated by an element containing a name which is
61 zero.
62
63 The field `has_arg' is:
64 no_argument (or 0) if the option does not take an argument,
65 required_argument (or 1) if the option requires an argument,
66 optional_argument (or 2) if the option takes an optional argument.
67
68 If the field `flag' is not NULL, it points to a variable that is set
69 to the value given in the field `val' when the option is found, but
70 left unchanged if the option is not found.
71
72 To have a long-named option do something other than set an `int' to
73 a compiled-in constant, such as set a value from `optarg', set the
74 option's `flag' field to zero and its `val' field to a nonzero
75 value (the equivalent single-letter option character, if there is
76 one). For long options that have a zero `flag' field, `getopt'
77 returns the contents of the `val' field. */
78
79struct option
80{
81#if defined (__STDC__) && __STDC__
82 const char *name;
83#else
84 char *name;
85#endif
86 /* has_arg can't be an enum because some compilers complain about
87 type mismatches in all the code that assumes it is an int. */
88 int has_arg;
89 int *flag;
90 int val;
91};
92
93/* Names for the values of the `has_arg' field of `struct option'. */
94
95#define no_argument 0
96#define required_argument 1
97#define optional_argument 2
98
99#if defined (__STDC__) && __STDC__
100#ifdef __GNU_LIBRARY__
101/* Many other libraries have conflicting prototypes for getopt, with
102 differences in the consts, in stdlib.h. To avoid compilation
103 errors, only prototype getopt for the GNU C library. */
104extern int getopt (int argc, char *const *argv, const char *shortopts);
105#else /* not __GNU_LIBRARY__ */
106extern int getopt ();
107#endif /* __GNU_LIBRARY__ */
108extern int getopt_long (int argc, char *const *argv, const char *shortopts,
109 const struct option *longopts, int *longind);
110extern int getopt_long_only (int argc, char *const *argv,
111 const char *shortopts,
112 const struct option *longopts, int *longind);
113
114/* Internal only. Users should not call this directly. */
115extern int _getopt_internal (int argc, char *const *argv,
116 const char *shortopts,
117 const struct option *longopts, int *longind,
118 int long_only);
119#else /* not __STDC__ */
120extern int getopt ();
121extern int getopt_long ();
122extern int getopt_long_only ();
123
124extern int _getopt_internal ();
125#endif /* __STDC__ */
126
127#ifdef __cplusplus
128}
129#endif
130
131#endif /* getopt.h */
[3262]132#endif /* bird hack */
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