src/cc-compat.h

   1 /*
   2  * Copyright (C) 2009-2012 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_compat_h__
   8 #define INCLUDE_compat_h__
   9
  10 /*
  11  * See if our compiler is known to support flexible array members.
  12  */
  13 #ifndef GIT_FLEX_ARRAY
  14 #       if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
  15 #               define GIT_FLEX_ARRAY /* empty */
  16 #       elif defined(__GNUC__)
  17 #               if (__GNUC__ >= 3)
  18 #                       define GIT_FLEX_ARRAY /* empty */
  19 #               else
  20 #                       define GIT_FLEX_ARRAY 0 /* older GNU extension */
  21 #               endif
  22 #       endif
  23
  24 /* Default to safer but a bit wasteful traditional style */
  25 #       ifndef GIT_FLEX_ARRAY
  26 #               define GIT_FLEX_ARRAY 1
  27 #       endif
  28 #endif
  29
  30 #ifdef __GNUC__
  31 #       define GIT_TYPEOF(x) (__typeof__(x))
  32 #else
  33 #       define GIT_TYPEOF(x)
  34 #endif
  35
  36 #define GIT_UNUSED(x) ((void)(x))
  37
  38 /* Define the printf format specifer to use for size_t output */
  39 #if defined(_MSC_VER) || defined(__MINGW32__)
  40 #       define PRIuZ "Iu"
  41 #else
  42 #       define PRIuZ "zu"
  43 #endif
  44
  45 /* Micosoft Visual C/C++ */
  46 #if defined(_MSC_VER)
  47 /* disable "deprecated function" warnings */
  48 #       pragma warning ( disable : 4996 )
  49 /* disable "conditional expression is constant" level 4 warnings */
  50 #       pragma warning ( disable : 4127 )
  51 #endif
  52
  53 #if defined (_MSC_VER)
  54         typedef unsigned char bool;
  55 #       define true 1
  56 #       define false 0
  57 #else
  58 #       include <stdbool.h>
  59 #endif
  60
  61 #ifndef va_copy
  62 #       ifdef __va_copy
  63 #               define va_copy(dst, src) __va_copy(dst, src)
  64 #       else
  65 #               define va_copy(dst, src) ((dst) = (src))
  66 #       endif
  67 #endif
  68
  69 #endif /* INCLUDE_compat_h__ */