2022-07-10 10:23:45 +03:00
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/* attribute.h - portability hacks for __attribute__ usage in other header files
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2010-03-26 01:20:59 +02:00
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2022-07-10 10:23:45 +03:00
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Copyright (C) 2001 Russell Kroll <rkroll@exploits.org>
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2005 Arnaud Quette <arnaud.quette@free.fr>
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2020 Jim Klimov <jimklimov@gmail.com>
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2010-03-26 01:20:59 +02:00
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2022-07-10 10:23:45 +03:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef NUT_ATTRIBUTE_H_SEEN
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#define NUT_ATTRIBUTE_H_SEEN 1
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/* To complicate matters, compilers with native support
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* for the keyword may expose or not expose it as a macro...
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* but for those that perform such courtesy, or are known
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* supporters, we can put up the flag. For others, someone
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* with those compilers should check and file PRs to NUT.
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*/
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#if (!defined HAVE___ATTRIBUTE__) || (HAVE___ATTRIBUTE__ == 0)
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# if ( defined(__GNUC__) && ( __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) ) ) || ( defined(__STRICT_ANSI__) && __STRICT_ANSI__ )
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# ifndef __attribute__
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# define __attribute__(x)
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# endif
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# ifndef HAVE___ATTRIBUTE__
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# define HAVE___ATTRIBUTE__ 0
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# endif
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# else
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# if defined(__clang__) || defined(__GNUC__) || defined(__SUNPRO_C)
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# ifndef HAVE___ATTRIBUTE__
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# define HAVE___ATTRIBUTE__ 1
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# endif
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# else
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# ifndef HAVE___ATTRIBUTE__
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# define HAVE___ATTRIBUTE__ 0
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# endif
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# endif
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2010-03-26 01:20:59 +02:00
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# endif
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#endif
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2022-07-10 10:23:45 +03:00
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#if (!defined HAVE___ATTRIBUTE__) || (HAVE___ATTRIBUTE__ == 0)
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# ifdef HAVE___ATTRIBUTE__UNUSED_ARG
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# undef HAVE___ATTRIBUTE__UNUSED_ARG
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# endif
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# ifdef HAVE___ATTRIBUTE__UNUSED_FUNC
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# undef HAVE___ATTRIBUTE__UNUSED_FUNC
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# endif
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# ifdef HAVE___ATTRIBUTE__NORETURN
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# undef HAVE___ATTRIBUTE__NORETURN
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# endif
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# ifdef HAVE___ATTRIBUTE__
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# undef HAVE___ATTRIBUTE__
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# endif
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#endif
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/* Other source files now can simply check for `ifdef HAVE___ATTRIBUTE__*`
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* as usual, and not bother about 0/1 values of the macro as well.
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*/
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#endif /* NUT_ATTRIBUTE_H_SEEN */
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