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annotate lib/getopt-cdefs.in.h @ 40186:8964917f9574

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author Karl Berry <karl@freefriends.org>
date Mon, 18 Feb 2019 08:02:49 -0800
parents b06060465f09
children
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1 /* getopt-on-non-glibc compatibility macros.
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2 Copyright (C) 1989-2019 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 it
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8 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
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10 the 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, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 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
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18 License along with gnulib; if not, see
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19 <https://www.gnu.org/licenses/>. */
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20
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21 #ifndef _GETOPT_CDEFS_H
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22 #define _GETOPT_CDEFS_H 1
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23
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24 /* This header should not be used directly; include getopt.h or
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25 unistd.h instead. It does not have a protective #error, because
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26 the guard macro for getopt.h in gnulib is not fixed. */
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27
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28 /* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
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29 a number of the internal macros supplied to GNU libc's headers by
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30 sys/cdefs.h. Provide fallback definitions for all of them. */
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31 #if @HAVE_SYS_CDEFS_H@
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32 # include <sys/cdefs.h>
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33 #endif
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34
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35 #ifndef __BEGIN_DECLS
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36 # ifdef __cplusplus
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37 # define __BEGIN_DECLS extern "C" {
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38 # else
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39 # define __BEGIN_DECLS /* nothing */
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40 # endif
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41 #endif
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42 #ifndef __END_DECLS
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43 # ifdef __cplusplus
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44 # define __END_DECLS }
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45 # else
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46 # define __END_DECLS /* nothing */
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47 # endif
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48 #endif
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49
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50 #ifndef __GNUC_PREREQ
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51 # if defined __GNUC__ && defined __GNUC_VERSION__
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52 # define __GNUC_PREREQ(maj, min) \
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53 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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54 # else
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55 # define __GNUC_PREREQ(maj, min) 0
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56 # endif
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57 #endif
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58
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59 #ifndef __THROW
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60 # if defined __cplusplus && __GNUC_PREREQ (2,8)
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61 # define __THROW throw ()
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62 # else
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63 # define __THROW
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64 # endif
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65 #endif
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66
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67 #endif /* _GETOPT_CDEFS_H */