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f501265f 1/*
359fc2d2 2 * Copyright (C) the libgit2 contributors. All rights reserved.
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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.
f501265f 6 */
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7#ifndef INCLUDE_cc_compat_h__
8#define INCLUDE_cc_compat_h__
f501265f 9
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10#include <stdarg.h>
11
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12/*
13 * See if our compiler is known to support flexible array members.
14 */
2bf93fa1 15#ifndef GIT_FLEX_ARRAY
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16# if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
17# define GIT_FLEX_ARRAY /* empty */
18# elif defined(__GNUC__)
19# if (__GNUC__ >= 3)
20# define GIT_FLEX_ARRAY /* empty */
21# else
22# define GIT_FLEX_ARRAY 0 /* older GNU extension */
23# endif
87d9869f 24# endif
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25
26/* Default to safer but a bit wasteful traditional style */
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27# ifndef GIT_FLEX_ARRAY
28# define GIT_FLEX_ARRAY 1
29# endif
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30#endif
31
32#ifdef __GNUC__
c060854e 33# define GIT_TYPEOF(x) (__typeof__(x))
f501265f 34#else
c060854e 35# define GIT_TYPEOF(x)
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36#endif
37
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38#if defined(__GNUC__)
39# define GIT_ALIGN(x,size) x __attribute__ ((aligned(size)))
40#elif defined(_MSC_VER)
41# define GIT_ALIGN(x,size) __declspec(align(size)) x
42#else
43# define GIT_ALIGN(x,size) x
44#endif
45
854eccbb 46#define GIT_UNUSED(x) ((void)(x))
73dcf287 47
8a086f87 48/* Define the printf format specifer to use for size_t output */
a1c0728d 49#if defined(_MSC_VER) || defined(__MINGW32__)
ac3d33df 50
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51/* Visual Studio 2012 and prior lack PRId64 entirely */
52# ifndef PRId64
53# define PRId64 "I64d"
54# endif
55
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56/* The first block is needed to avoid warnings on MingW amd64 */
57# if (SIZE_MAX == ULLONG_MAX)
58# define PRIuZ "I64u"
59# define PRIxZ "I64x"
60# define PRIXZ "I64X"
61# define PRIdZ "I64d"
62# else
63# define PRIuZ "Iu"
64# define PRIxZ "Ix"
65# define PRIXZ "IX"
66# define PRIdZ "Id"
67# endif
68
a1c0728d 69#else
c060854e 70# define PRIuZ "zu"
47fc2642 71# define PRIxZ "zx"
ac3d33df 72# define PRIXZ "zX"
cf1013a8 73# define PRIdZ "zd"
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74#endif
75
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76/* Micosoft Visual C/C++ */
77#if defined(_MSC_VER)
78/* disable "deprecated function" warnings */
c060854e 79# pragma warning ( disable : 4996 )
ca3939e6 80/* disable "conditional expression is constant" level 4 warnings */
c060854e 81# pragma warning ( disable : 4127 )
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82#endif
83
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84#if defined (_MSC_VER)
85 typedef unsigned char bool;
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86# ifndef true
87# define true 1
88# endif
89# ifndef false
90# define false 0
91# endif
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92#else
93# include <stdbool.h>
94#endif
95
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96#ifndef va_copy
97# ifdef __va_copy
98# define va_copy(dst, src) __va_copy(dst, src)
99# else
100# define va_copy(dst, src) ((dst) = (src))
101# endif
102#endif
103
eae0bfdc 104#endif