/* Header with interface version macros for library pieces copied elsewhere.

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Copyright (C) 1995-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _GNU_VERSIONS_H

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#define _GNU_VERSIONS_H 1

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/* This file exists to define these few macros. Each specifies a version

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number associated with the library interface of a piece of the C library

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which is also distributed with other GNU packages. These pieces are

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both part of the GNU C library and also distributed with other GNU

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packages so those packages may use their facilities on systems lacking

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the GNU C library. The source files for each piece surround all their

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code with `#ifndef ELIDE_CODE' after defining it with this:

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#define OBSTACK_INTERFACE_VERSION 1

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#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1

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#include <gnu-versions.h>

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#if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION

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#define ELIDE_CODE

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#endif

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#endif

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This allows those one to avoid compiling those files when part of a GNU

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package not libc, on a system using a GNU C library that supports the

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same interface.

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Please preserve the format of the comments after each macro. And

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remember, if any of these versions change, the libc.so major version

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number must change too (so avoid it)! */

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#define _GNU_OBSTACK_INTERFACE_VERSION 1 /* vs malloc/obstack.c */

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#define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */

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#define _GNU_GLOB_INTERFACE_VERSION 2 /* vs posix/glob.c */

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#define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and

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posix/getopt1.c */

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#endif /* gnu-versions.h */

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