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