| 1 | /* getopt (GNU extensions) gnulib wrapper header.
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| 2 | Copyright (C) 1989-2021 Free Software Foundation, Inc.
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| 3 | This file is part of gnulib.
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| 4 | Unlike most of the getopt implementation, it is NOT shared
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| 5 | with the GNU C Library.
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| 6 |
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| 7 | This file is free software: you can redistribute it and/or modify
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| 8 | it under the terms of the GNU Lesser General Public License as
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| 9 | published by the Free Software Foundation; either version 2.1 of the
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| 10 | License, or (at your option) any later version.
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| 11 |
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| 12 | This file is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU Lesser General Public License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU Lesser General Public License
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| 18 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 19 |
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| 20 | #ifndef _GETOPT_PFX_EXT_H
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| 21 | #define _GETOPT_PFX_EXT_H 1
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| 22 |
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| 23 | /* This header should not be used directly; include getopt.h instead.
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| 24 | It does not have a protective #error, because the guard macro for
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| 25 | getopt.h in gnulib is not fixed. */
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| 26 |
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| 27 | /* Standalone applications should #define __GETOPT_PREFIX to an
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| 28 | identifier that prefixes the external functions and variables
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| 29 | defined in getopt-core.h and getopt-ext.h. Systematically
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| 30 | rename identifiers so that they do not collide with the system
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| 31 | functions and variables. Renaming avoids problems with some
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| 32 | compilers and linkers. */
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| 33 | #ifdef __GETOPT_PREFIX
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| 34 | # ifndef __GETOPT_ID
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| 35 | # define __GETOPT_CONCAT(x, y) x ## y
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| 36 | # define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
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| 37 | # define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
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| 38 | # endif
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| 39 | # undef getopt_long
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| 40 | # undef getopt_long_only
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| 41 | # undef option
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| 42 | # undef _getopt_internal
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| 43 | # define getopt_long __GETOPT_ID (getopt_long)
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| 44 | # define getopt_long_only __GETOPT_ID (getopt_long_only)
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| 45 | # define option __GETOPT_ID (option)
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| 46 | # define _getopt_internal __GETOPT_ID (getopt_internal)
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| 47 |
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| 48 | /* The system's getopt.h may have already included getopt-ext.h to
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| 49 | declare the unprefixed identifiers. Undef _GETOPT_EXT_H so that
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| 50 | getopt-ext.h declares them with prefixes. */
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| 51 | # undef _GETOPT_EXT_H
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| 52 | #endif
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| 53 |
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| 54 | /* Standalone applications get correct prototypes for getopt_long and
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| 55 | getopt_long_only; they declare "char **argv". For backward
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| 56 | compatibility with old applications, if __GETOPT_PREFIX is not
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| 57 | defined, we supply GNU-libc-compatible, but incorrect, prototypes
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| 58 | using "char *const *argv". (GNU libc is stuck with the incorrect
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| 59 | prototypes, as they are baked into older versions of LSB.) */
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| 60 | #ifndef __getopt_argv_const
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| 61 | # if defined __GETOPT_PREFIX
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| 62 | # define __getopt_argv_const /* empty */
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| 63 | # else
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| 64 | # define __getopt_argv_const const
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| 65 | # endif
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| 66 | #endif
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| 67 |
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| 68 | #include <getopt-ext.h>
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| 69 |
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| 70 | #endif /* _GETOPT_PFX_EXT_H */
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