include/begin_code.h
author Ryan C. Gordon <icculus@icculus.org>
Wed, 22 Mar 2006 01:28:36 +0000
changeset 1573 2422ca15ba42
parent 1402 d910939febfa
child 1574 0fd72308659e
permissions -rw-r--r--
Added support for gcc4's -fvisibility=hidden option.

Fixes Bugzilla #169.
     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 #ifdef __GNUC__
    35 #define SDL_GCC_ATTR_VIS_DEFAULT __attribute__((visibility("default")))
    36 #endif
    37 
    38 /* Some compilers use a special export keyword */
    39 #ifndef DECLSPEC
    40 # ifdef __BEOS__
    41 #  if defined(__GNUC__)
    42 #   define DECLSPEC	__declspec(dllexport)
    43 #  else
    44 #   define DECLSPEC	__declspec(export)
    45 #  endif
    46 # else
    47 # ifdef __WIN32__
    48 #  ifdef __BORLANDC__
    49 #   ifdef BUILD_SDL
    50 #    define DECLSPEC 
    51 #   else
    52 #    define DECLSPEC __declspec(dllimport)
    53 #   endif
    54 #  else
    55 #   define DECLSPEC	__declspec(dllexport)
    56 #  endif
    57 # else
    58 # ifdef __OS2__
    59 #  ifdef __WATCOMC__
    60 #   ifdef BUILD_SDL
    61 #    define DECLSPEC __declspec(dllexport)
    62 #   else
    63 #  define DECLSPEC
    64 # endif
    65 #  else
    66 #   define DECLSPEC
    67 #  endif
    68 # else
    69 #  define DECLSPEC
    70 # endif
    71 # endif
    72 # endif
    73 #endif
    74 
    75 /* By default SDL uses the C calling convention */
    76 #ifndef SDLCALL
    77 #if defined(__WIN32__) && !defined(__GNUC__)
    78 #define SDLCALL __cdecl
    79 #else
    80 #ifdef __OS2__
    81 /* But on OS/2, we use the _System calling convention */
    82 /* to be compatible with every compiler */
    83 #define SDLCALL _System
    84 #else
    85 #define SDLCALL
    86 #endif
    87 #endif
    88 #endif /* SDLCALL */
    89 
    90 /* Removed DECLSPEC on Symbian OS because SDL cannot be a DLL in EPOC */
    91 #ifdef __SYMBIAN32__ 
    92 #undef DECLSPEC
    93 #define DECLSPEC
    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)
   124 #ifndef __inline__
   125 #define __inline__	__inline
   126 #endif
   127 #define SDL_INLINE_OKAY
   128 #else
   129 #if !defined(__MRC__) && !defined(_SGI_SOURCE)
   130 #define __inline__ inline
   131 #define SDL_INLINE_OKAY
   132 #endif /* Not a funky compiler */
   133 #endif /* Visual C++ */
   134 #endif /* GNU C */
   135 #endif /* SDL_INLINE_OKAY */
   136 
   137 /* If inlining isn't supported, remove "__inline__", turning static
   138    inlined functions into static functions (resulting in code bloat
   139    in all files which include the offending header files)
   140 */
   141 #ifndef SDL_INLINE_OKAY
   142 #define __inline__
   143 #endif
   144 
   145 /* Apparently this is needed by several Windows compilers */
   146 #if !defined(__MACH__)
   147 #ifndef NULL
   148 #ifdef __cplusplus
   149 #define NULL 0
   150 #else
   151 #define NULL ((void *)0)
   152 #endif
   153 #endif /* NULL */
   154 #endif /* ! MacOS X - breaks precompiled headers */