Edit: /usr/include/gnu-versions.h (2343B)
/* Header with interface version macros for library pieces copied elsewhere.
Copyright (C) 1995-2021 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
. */
#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
#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 2 /* vs posix/glob.c */
#define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and
posix/getopt1.c */
#endif /* gnu-versions.h */