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53 lines
2.3 KiB
C
53 lines
2.3 KiB
C
8 years ago
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/* Header with interface version macros for library pieces copied elsewhere.
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Copyright (C) 1995-2016 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 1 /* 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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