1 /* getopt (basic, portable features) gnulib wrapper header. 2 Copyright (C) 1989-2021 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 8 it under the terms of the GNU Lesser General Public License as 9 published by the Free Software Foundation; either version 2.1 of the 10 License, or (at your option) any later version. 11 12 This file is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU Lesser General Public License for more details. 16 17 You should have received a copy of the GNU Lesser General Public License 18 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 19 20 #ifndef _GETOPT_PFX_CORE_H 21 #define _GETOPT_PFX_CORE_H 1 22 23 /* This header should not be used directly; include getopt.h or 24 unistd.h instead. It does not have a protective #error, because 25 the guard macro for getopt.h in gnulib is not fixed. */ 26 27 /* Standalone applications should #define __GETOPT_PREFIX to an 28 identifier that prefixes the external functions and variables 29 defined in getopt-core.h and getopt-ext.h. Systematically 30 rename identifiers so that they do not collide with the system 31 functions and variables. Renaming avoids problems with some 32 compilers and linkers. */ 33 #ifdef __GETOPT_PREFIX 34 # ifndef __GETOPT_ID 35 # define __GETOPT_CONCAT(x, y) x ## y 36 # define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y) 37 # define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y) 38 # endif 39 # undef getopt 40 # undef optarg 41 # undef opterr 42 # undef optind 43 # undef optopt 44 # define getopt __GETOPT_ID (getopt) 45 # define optarg __GETOPT_ID (optarg) 46 # define opterr __GETOPT_ID (opterr) 47 # define optind __GETOPT_ID (optind) 48 # define optopt __GETOPT_ID (optopt) 49 50 /* Work around a a problem on macOS, which declares getopt with a 51 trailing __DARWIN_ALIAS(getopt) that would expand to something like 52 __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following 53 hack to suppress the macOS declaration <https://bugs.gnu.org/40205>. */ 54 # ifdef __APPLE__ 55 # define _GETOPT 56 # endif 57 58 /* The system's getopt.h may have already included getopt-core.h to 59 declare the unprefixed identifiers. Undef _GETOPT_CORE_H so that 60 getopt-core.h declares them with prefixes. */ 61 # undef _GETOPT_CORE_H 62 #endif 63 64 #include <getopt-core.h> 65 66 #endif /* _GETOPT_PFX_CORE_H */