mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 11:41:07 +00:00
53 lines
2.3 KiB
C
53 lines
2.3 KiB
C
/* Header with interface version macros for library pieces copied elsewhere.
|
|
Copyright (C) 1995-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _GNU_VERSIONS_H
|
|
#define _GNU_VERSIONS_H 1
|
|
|
|
/* This file exists to define these few macros. Each specifies a version
|
|
number associated with the library interface of a piece of the C library
|
|
which is also distributed with other GNU packages. These pieces are
|
|
both part of the GNU C library and also distributed with other GNU
|
|
packages so those packages may use their facilities on systems lacking
|
|
the GNU C library. The source files for each piece surround all their
|
|
code with `#ifndef ELIDE_CODE' after defining it with this:
|
|
|
|
#define OBSTACK_INTERFACE_VERSION 1
|
|
#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
|
|
#include <gnu-versions.h>
|
|
#if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
|
|
#define ELIDE_CODE
|
|
#endif
|
|
#endif
|
|
|
|
This allows those one to avoid compiling those files when part of a GNU
|
|
package not libc, on a system using a GNU C library that supports the
|
|
same interface.
|
|
|
|
Please preserve the format of the comments after each macro. And
|
|
remember, if any of these versions change, the libc.so major version
|
|
number must change too (so avoid it)! */
|
|
|
|
#define _GNU_OBSTACK_INTERFACE_VERSION 1 /* vs malloc/obstack.c */
|
|
#define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */
|
|
#define _GNU_GLOB_INTERFACE_VERSION 1 /* vs posix/glob.c */
|
|
#define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and
|
|
posix/getopt1.c */
|
|
|
|
#endif /* gnu-versions.h */
|