1 /* getopt (basic, portable features) gnulib wrapper header.
2 Copyright (C) 1989-2018 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.
7 This file is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as
9 published by the Free Software Foundation; either version 2.1 of
10 the License, or (at your option) any later version.
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 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with gnulib; if not, see
19 <https://www.gnu.org/licenses/>. */
21 #ifndef _GETOPT_PFX_CORE_H
22 #define _GETOPT_PFX_CORE_H 1
24 /* This header should not be used directly; include getopt.h or
25 unistd.h instead. It does not have a protective #error, because
26 the guard macro for getopt.h in gnulib is not fixed. */
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
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)
45 # define getopt __GETOPT_ID (getopt)
46 # define optarg __GETOPT_ID (optarg)
47 # define opterr __GETOPT_ID (opterr)
48 # define optind __GETOPT_ID (optind)
49 # define optopt __GETOPT_ID (optopt)
51 /* The system's getopt.h may have already included getopt-core.h to
52 declare the unprefixed identifiers. Undef _GETOPT_CORE_H so that
53 getopt-core.h declares them with prefixes. */
54 # undef _GETOPT_CORE_H
57 #include <getopt-core.h>
59 #endif /* _GETOPT_PFX_CORE_H */