| 1 | /* Header with interface version macros for library pieces copied elsewhere. |
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| 2 | Copyright (C) 1995-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #ifndef _GNU_VERSIONS_H |
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| 20 | #define _GNU_VERSIONS_H 1 |
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| 21 | |
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| 22 | /* This file exists to define these few macros. Each specifies a version |
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| 23 | number associated with the library interface of a piece of the C library |
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| 24 | which is also distributed with other GNU packages. These pieces are |
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| 25 | both part of the GNU C library and also distributed with other GNU |
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| 26 | packages so those packages may use their facilities on systems lacking |
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| 27 | the GNU C library. The source files for each piece surround all their |
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| 28 | code with `#ifndef ELIDE_CODE' after defining it with this: |
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| 29 | |
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| 30 | #define OBSTACK_INTERFACE_VERSION 1 |
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| 31 | #if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1 |
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| 32 | #include <gnu-versions.h> |
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| 33 | #if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION |
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| 34 | #define ELIDE_CODE |
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| 35 | #endif |
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| 36 | #endif |
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| 37 | |
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| 38 | This allows those one to avoid compiling those files when part of a GNU |
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| 39 | package not libc, on a system using a GNU C library that supports the |
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| 40 | same interface. |
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| 41 | |
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| 42 | Please preserve the format of the comments after each macro. And |
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| 43 | remember, if any of these versions change, the libc.so major version |
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| 44 | number must change too (so avoid it)! */ |
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| 45 | |
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| 46 | #define _GNU_OBSTACK_INTERFACE_VERSION 1 /* vs malloc/obstack.c */ |
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| 47 | #define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */ |
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| 48 | #define _GNU_GLOB_INTERFACE_VERSION 2 /* vs posix/glob.c */ |
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| 49 | #define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and |
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| 50 | posix/getopt1.c */ |
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| 51 | |
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| 52 | #endif /* gnu-versions.h */ |
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| 53 | |
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