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authormarha <marha@users.sourceforge.net>2013-03-18 16:33:08 +0100
committermarha <marha@users.sourceforge.net>2013-03-18 16:33:08 +0100
commit9c17f511266fff48a936633de280f271f0ce0c11 (patch)
treed34a68ecb0949f09e997031c66e1a3024903e3c8 /mesalib/include/c99_compat.h
parent514e0809a42027e2178bf0eccd526a08da60f399 (diff)
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libX11 mesa git update 18 Mar 2013
libX11 commit f49bb2dd6d4ea45c55bd21acc0efe2b764441020 mesa commit 2da8ee16a8b126d15f34552916c77b203be326db
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+/**************************************************************************
+ *
+ * Copyright 2007-2013 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef _C99_COMPAT_H_
+#define _C99_COMPAT_H_
+
+
+/*
+ * MSVC hacks.
+ */
+#if defined(_MSC_VER)
+ /*
+ * Visual Studio 2012 will complain if we define the `inline` keyword, but
+ * actually it only supports the keyword on C++.
+ *
+ * To avoid this the _ALLOW_KEYWORD_MACROS must be set.
+ */
+# if (_MSC_VER >= 1700) && !defined(_ALLOW_KEYWORD_MACROS)
+# define _ALLOW_KEYWORD_MACROS
+# endif
+
+ /*
+ * XXX: MSVC has a `__restrict` keyword, but it also has a
+ * `__declspec(restrict)` modifier, so it is impossible to define a
+ * `restrict` macro without interfering with the latter. Furthermore the
+ * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT
+ * macro. For now resolve this issue by redefining _CRTRESTRICT, but going
+ * forward we should probably should stop using restrict, especially
+ * considering that our code does not obbey strict aliasing rules any way.
+ */
+# include <crtdefs.h>
+# undef _CRTRESTRICT
+# define _CRTRESTRICT
+#endif
+
+
+/*
+ * C99 inline keyword
+ */
+#ifndef inline
+# ifdef __cplusplus
+ /* C++ supports inline keyword */
+# elif defined(__GNUC__)
+# define inline __inline__
+# elif defined(_MSC_VER)
+# define inline __inline
+# elif defined(__ICL)
+# define inline __inline
+# elif defined(__INTEL_COMPILER)
+ /* Intel compiler supports inline keyword */
+# elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
+# define inline __inline
+# elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
+ /* C99 supports inline keyword */
+# elif (__STDC_VERSION__ >= 199901L)
+ /* C99 supports inline keyword */
+# else
+# define inline
+# endif
+#endif
+
+
+/*
+ * C99 restrict keyword
+ *
+ * See also:
+ * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html
+ */
+#ifndef restrict
+# if (__STDC_VERSION__ >= 199901L)
+ /* C99 */
+# elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
+ /* C99 */
+# elif defined(__GNUC__)
+# define restrict __restrict__
+# elif defined(_MSC_VER)
+# define restrict __restrict
+# else
+# define restrict /* */
+# endif
+#endif
+
+
+/*
+ * C99 __func__ macro
+ */
+#ifndef __func__
+# if (__STDC_VERSION__ >= 199901L)
+ /* C99 */
+# elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
+ /* C99 */
+# elif defined(__GNUC__)
+# if __GNUC__ >= 2
+# define __func__ __FUNCTION__
+# else
+# define __func__ "<unknown>"
+# endif
+# elif defined(_MSC_VER)
+# if _MSC_VER >= 1300
+# define __func__ __FUNCTION__
+# else
+# define __func__ "<unknown>"
+# endif
+# else
+# define __func__ "<unknown>"
+# endif
+#endif
+
+
+/* Simple test case for debugging */
+#if 0
+static inline const char *
+test_c99_compat_h(const void * restrict a,
+ const void * restrict b)
+{
+ return __func__;
+}
+#endif
+
+
+#endif /* _C99_COMPAT_H_ */