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1 | /* |
2 | SDL - Simple DirectMedia Layer | |
3 | Copyright (C) 1997-2004 Sam Lantinga | |
4 | ||
5 | This library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2 of the License, or (at your option) any later version. | |
9 | ||
10 | This library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with this library; if not, write to the Free | |
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | ||
19 | Sam Lantinga | |
20 | slouken@libsdl.org | |
21 | */ | |
22 | ||
23 | /* This file sets things up for C dynamic library function definitions, | |
24 | static inlined functions, and structures aligned at 4-byte alignment. | |
25 | If you don't like ugly C preprocessor code, don't look at this file. :) | |
26 | */ | |
27 | ||
28 | /* This shouldn't be nested -- included it around code only. */ | |
29 | #ifdef _begin_code_h | |
30 | #error Nested inclusion of begin_code.h | |
31 | #endif | |
32 | #define _begin_code_h | |
33 | ||
34 | /* Some compilers use a special export keyword */ | |
35 | #ifndef DECLSPEC | |
36 | # if defined(__BEOS__) | |
37 | # if defined(__GNUC__) | |
38 | # define DECLSPEC __declspec(dllexport) | |
39 | # else | |
40 | # define DECLSPEC __declspec(export) | |
41 | # endif | |
42 | # elif defined(__WIN32__) | |
43 | # ifdef __BORLANDC__ | |
44 | # ifdef BUILD_SDL | |
45 | # define DECLSPEC | |
46 | # else | |
47 | # define DECLSPEC __declspec(dllimport) | |
48 | # endif | |
49 | # else | |
50 | # define DECLSPEC __declspec(dllexport) | |
51 | # endif | |
52 | # elif defined(__OS2__) | |
53 | # ifdef __WATCOMC__ | |
54 | # ifdef BUILD_SDL | |
55 | # define DECLSPEC __declspec(dllexport) | |
56 | # else | |
57 | # define DECLSPEC | |
58 | # endif | |
59 | # else | |
60 | # define DECLSPEC | |
61 | # endif | |
62 | # else | |
63 | # if defined(__GNUC__) && __GNUC__ >= 4 | |
64 | # define DECLSPEC __attribute__ ((visibility("default"))) | |
65 | # else | |
66 | # define DECLSPEC | |
67 | # endif | |
68 | # endif | |
69 | #endif | |
70 | ||
71 | /* By default SDL uses the C calling convention */ | |
72 | #ifndef SDLCALL | |
73 | #if defined(__WIN32__) && !defined(__GNUC__) | |
74 | #define SDLCALL __cdecl | |
75 | #else | |
76 | #ifdef __OS2__ | |
77 | /* But on OS/2, we use the _System calling convention */ | |
78 | /* to be compatible with every compiler */ | |
79 | #define SDLCALL _System | |
80 | #else | |
81 | #define SDLCALL | |
82 | #endif | |
83 | #endif | |
84 | #endif /* SDLCALL */ | |
85 | ||
86 | #ifdef __SYMBIAN32__ | |
87 | #ifndef EKA2 | |
88 | #undef DECLSPEC | |
89 | #define DECLSPEC | |
90 | #elif !defined(__WINS__) | |
91 | #undef DECLSPEC | |
92 | #define DECLSPEC __declspec(dllexport) | |
93 | #endif /* !EKA2 */ | |
94 | #endif /* __SYMBIAN32__ */ | |
95 | ||
96 | /* Force structure packing at 4 byte alignment. | |
97 | This is necessary if the header is included in code which has structure | |
98 | packing set to an alternate value, say for loading structures from disk. | |
99 | The packing is reset to the previous value in close_code.h | |
100 | */ | |
101 | #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__) | |
102 | #ifdef _MSC_VER | |
103 | #pragma warning(disable: 4103) | |
104 | #endif | |
105 | #ifdef __BORLANDC__ | |
106 | #pragma nopackwarning | |
107 | #endif | |
108 | #pragma pack(push,4) | |
109 | #elif (defined(__MWERKS__) && defined(__MACOS__)) | |
110 | #pragma options align=mac68k4byte | |
111 | #pragma enumsalwaysint on | |
112 | #endif /* Compiler needs structure packing set */ | |
113 | ||
114 | /* Set up compiler-specific options for inlining functions */ | |
115 | #ifndef SDL_INLINE_OKAY | |
116 | #ifdef __GNUC__ | |
117 | #define SDL_INLINE_OKAY | |
118 | #else | |
119 | /* Add any special compiler-specific cases here */ | |
120 | #if defined(_MSC_VER) || defined(__BORLANDC__) || \ | |
121 | defined(__DMC__) || defined(__SC__) || \ | |
122 | defined(__WATCOMC__) || defined(__LCC__) || \ | |
123 | defined(__DECC) || defined(__EABI__) | |
124 | #ifndef __inline__ | |
125 | #define __inline__ __inline | |
126 | #endif | |
127 | #define SDL_INLINE_OKAY | |
128 | #else | |
129 | #if !defined(__MRC__) && !defined(_SGI_SOURCE) | |
130 | #ifndef __inline__ | |
131 | #define __inline__ inline | |
132 | #endif | |
133 | #define SDL_INLINE_OKAY | |
134 | #endif /* Not a funky compiler */ | |
135 | #endif /* Visual C++ */ | |
136 | #endif /* GNU C */ | |
137 | #endif /* SDL_INLINE_OKAY */ | |
138 | ||
139 | /* If inlining isn't supported, remove "__inline__", turning static | |
140 | inlined functions into static functions (resulting in code bloat | |
141 | in all files which include the offending header files) | |
142 | */ | |
143 | #ifndef SDL_INLINE_OKAY | |
144 | #define __inline__ | |
145 | #endif | |
146 | ||
147 | /* Apparently this is needed by several Windows compilers */ | |
148 | #if !defined(__MACH__) | |
149 | #ifndef NULL | |
150 | #ifdef __cplusplus | |
151 | #define NULL 0 | |
152 | #else | |
153 | #define NULL ((void *)0) | |
154 | #endif | |
155 | #endif /* NULL */ | |
156 | #endif /* ! Mac OS X - breaks precompiled headers */ |