release/src/router/mysql/include/my_attribute.h

   1 /* Copyright (c) 2000-2003, 2007 MySQL AB
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; version 2 of the License.
   6
   7    This program is distributed in the hope that it will be useful,
   8    but WITHOUT ANY WARRANTY; without even the implied warranty of
   9    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10    GNU General Public License for more details.
  11
  12    You should have received a copy of the GNU General Public License
  13    along with this program; if not, write to the Free Software
  14    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA */
  15
  16 /*
  17   Helper macros used for setting different __attributes__
  18   on functions in a portable fashion
  19 */
  20
  21 #ifndef _my_attribute_h
  22 #define _my_attribute_h
  23
  24 /*
  25   Disable __attribute__() on gcc < 2.7, g++ < 3.4, and non-gcc compilers.
  26   Some forms of __attribute__ are actually supported in earlier versions of
  27   g++, but we just disable them all because we only use them to generate
  28   compilation warnings.
  29 */
  30 #ifndef __attribute__
  31 # if !defined(__GNUC__)
  32 #  define __attribute__(A)
  33 # elif GCC_VERSION < 2008
  34 #  define __attribute__(A)
  35 # elif defined(__cplusplus) && GCC_VERSION < 3004
  36 #  define __attribute__(A)
  37 # endif
  38 #endif
  39
  40 /*
  41   __attribute__((format(...))) is only supported in gcc >= 2.8 and g++ >= 3.4
  42   But that's already covered by the __attribute__ tests above, so this is
  43   just a convenience macro.
  44 */
  45 #ifndef ATTRIBUTE_FORMAT
  46 # define ATTRIBUTE_FORMAT(style, m, n) __attribute__((format(style, m, n)))
  47 #endif
  48
  49 /*
  50
  51    __attribute__((format(...))) on a function pointer is not supported
  52    until  gcc 3.1
  53 */
  54 #ifndef ATTRIBUTE_FORMAT_FPTR
  55 # if (GCC_VERSION >= 3001)
  56 #  define ATTRIBUTE_FORMAT_FPTR(style, m, n) ATTRIBUTE_FORMAT(style, m, n)
  57 # else
  58 #  define ATTRIBUTE_FORMAT_FPTR(style, m, n)
  59 # endif /* GNUC >= 3.1 */
  60 #endif
  61
  62
  63 #endif