dhcpd-pools  3.0
ISC dhcpd lease usage analyser
getopt-pfx-ext.h
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1 /* getopt (GNU extensions) gnulib wrapper header.
2  Copyright (C) 1989-2017 Free Software Foundation, Inc.
3  This file is part of gnulib.
4  Unlike most of the getopt implementation, it is NOT shared
5  with the GNU C Library.
6 
7  This file is free software; you can redistribute it and/or modify it
8  under the terms of the GNU General Public License as
9  published by the Free Software Foundation; either version 3 of
10  the License, or (at your option) any later version.
11 
12  This file is distributed in the hope that it will be useful, but
13  WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  General Public License for more details.
16 
17  You should have received a copy of the GNU General Public
18  License along with gnulib; if not, see
19  <https://www.gnu.org/licenses/>. */
20 
21 #ifndef _GETOPT_PFX_EXT_H
22 #define _GETOPT_PFX_EXT_H 1
23 
24 /* This header should not be used directly; include getopt.h instead.
25  It does not have a protective #error, because the guard macro for
26  getopt.h in gnulib is not fixed. */
27 
28 /* Standalone applications should #define __GETOPT_PREFIX to an
29  identifier that prefixes the external functions and variables
30  defined in getopt-core.h and getopt-ext.h. Systematically
31  rename identifiers so that they do not collide with the system
32  functions and variables. Renaming avoids problems with some
33  compilers and linkers. */
34 #ifdef __GETOPT_PREFIX
35 # ifndef __GETOPT_ID
36 # define __GETOPT_CONCAT(x, y) x ## y
37 # define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
38 # define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
39 # endif
40 # undef getopt_long
41 # undef getopt_long_only
42 # undef option
43 # undef _getopt_internal
44 # define getopt_long __GETOPT_ID (getopt_long)
45 # define getopt_long_only __GETOPT_ID (getopt_long_only)
46 # define option __GETOPT_ID (option)
47 # define _getopt_internal __GETOPT_ID (getopt_internal)
48 
49 /* The system's getopt.h may have already included getopt-ext.h to
50  declare the unprefixed identifiers. Undef _GETOPT_EXT_H so that
51  getopt-ext.h declares them with prefixes. */
52 # undef _GETOPT_EXT_H
53 #endif
54 
55 /* Standalone applications get correct prototypes for getopt_long and
56  getopt_long_only; they declare "char **argv". For backward
57  compatibility with old applications, if __GETOPT_PREFIX is not
58  defined, we supply GNU-libc-compatible, but incorrect, prototypes
59  using "char *const *argv". (GNU libc is stuck with the incorrect
60  prototypes, as they are baked into older versions of LSB.) */
61 #ifndef __getopt_argv_const
62 # if defined __GETOPT_PREFIX
63 # define __getopt_argv_const /* empty */
64 # else
65 # define __getopt_argv_const const
66 # endif
67 #endif
68 
69 #include <getopt-ext.h>
70 
71 #endif /* _GETOPT_PFX_EXT_H */