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PojavLauncherTeam
GitHub Repository: PojavLauncherTeam/mesa
 Path: blob/21.2-virgl/include/c99_compat.h
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/**************************************************************************

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 *

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 * Copyright 2007-2013 VMware, Inc.

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 * All Rights Reserved.

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 *

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 * Permission is hereby granted, free of charge, to any person obtaining a

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 * copy of this software and associated documentation files (the

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 * "Software"), to deal in the Software without restriction, including

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 * without limitation the rights to use, copy, modify, merge, publish,

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 * distribute, sub license, and/or sell copies of the Software, and to

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 * permit persons to whom the Software is furnished to do so, subject to

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 * the following conditions:

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 *

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 * The above copyright notice and this permission notice (including the

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 * next paragraph) shall be included in all copies or substantial portions

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 * of the Software.

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 *

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

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 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR

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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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 *

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 **************************************************************************/

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#include "no_extern_c.h"

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#ifndef _C99_COMPAT_H_

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#define _C99_COMPAT_H_

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/*

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 * MSVC hacks.

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 */

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#if defined(_MSC_VER)

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#  if _MSC_VER < 1900

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#    error "Microsoft Visual Studio 2015 or higher required"

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#  endif

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   /*

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    * Visual Studio will complain if we define the `inline` keyword, but

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    * actually it only supports the keyword on C++.

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    *

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    * To avoid this the _ALLOW_KEYWORD_MACROS must be set.

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    */

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#  if !defined(_ALLOW_KEYWORD_MACROS)

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#    define _ALLOW_KEYWORD_MACROS

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#  endif

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   /*

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    * XXX: MSVC has a `__restrict` keyword, but it also has a

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    * `__declspec(restrict)` modifier, so it is impossible to define a

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    * `restrict` macro without interfering with the latter.  Furthermore the

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    * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT

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    * macro.  For now resolve this issue by redefining _CRTRESTRICT, but going

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    * forward we should probably should stop using restrict, especially

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    * considering that our code does not obbey strict aliasing rules any way.

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    */

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#  include <crtdefs.h>

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#  undef _CRTRESTRICT

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#  define _CRTRESTRICT

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#endif

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/*

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 * C99 inline keyword

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 */

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#ifndef inline

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#  ifdef __cplusplus

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     /* C++ supports inline keyword */

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#  elif defined(__GNUC__)

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#    define inline __inline__

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#  elif defined(_MSC_VER)

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#    define inline __inline

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#  elif defined(__ICL)

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#    define inline __inline

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#  elif defined(__INTEL_COMPILER)

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     /* Intel compiler supports inline keyword */

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#  elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)

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#    define inline __inline

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#  elif (__STDC_VERSION__ >= 199901L)

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     /* C99 supports inline keyword */

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#  else

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#    define inline

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#  endif

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#endif

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/*

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 * C99 restrict keyword

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 *

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 * See also:

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 * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html

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 */

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#ifndef restrict

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#  if (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus)

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     /* C99 */

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#  elif defined(__GNUC__)

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#    define restrict __restrict__

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#  elif defined(_MSC_VER)

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#    define restrict __restrict

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#  else

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#    define restrict /* */

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#  endif

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#endif

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/*

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 * C99 __func__ macro

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 */

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#ifndef __func__

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#  if (__STDC_VERSION__ >= 199901L)

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     /* C99 */

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#  elif defined(__GNUC__)

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#    define __func__ __FUNCTION__

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#  elif defined(_MSC_VER)

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#    define __func__ __FUNCTION__

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#  else

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#    define __func__ "<unknown>"

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#  endif

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#endif

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/* Simple test case for debugging */

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#if 0

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static inline const char *

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test_c99_compat_h(const void * restrict a,

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                  const void * restrict b)

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{

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   return __func__;

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}

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#endif

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#endif /* _C99_COMPAT_H_ */

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