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Provide a __has_attribute compatibility macro

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__has_attribute is defined by clang and tests whether a given function
attribute is supported by clang.

Add a compatibility macro for other compilers.

Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>
This commit is contained in:
Justus Winter 2012-09-24 17:21:15 +02:00 committed by David Bremner
parent f164784d56
commit da12807734
1 changed files with 31 additions and 0 deletions
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31
compat/function-attributes.h Normal file
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/* function-attributes.h - Provides compiler abstractions for
* function attributes
*
* Copyright (c) 2012 Justus Winter <4winter@informatik.uni-hamburg.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/ .
*/
#ifndef FUNCTION_ATTRIBUTES_H
#define FUNCTION_ATTRIBUTES_H
/* clang provides this macro to test for support for function
* attributes. If it isn't defined, this provides a compatibility
* macro for other compilers.
*/
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
#endif