include/begin_code.h
author Ryan C. Gordon <icculus@icculus.org>
Mon, 14 Sep 2009 00:08:12 +0000
branchSDL-1.2
changeset 4193 430e6690c4cd
parent 4164 7a4c511c980a
child 4217 4c4113c2162c
permissions -rw-r--r--
GCC 3.03 support on OS/2.

Fixes Bugzilla #588.
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2009 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__) || defined(__HAIKU__)
    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 #  elif defined (__GNUC__) && __GNUC__ < 4
    60 #   /* Added support for GCC-EMX <v4.x */
    61 #   /* this is needed for XFree86/OS2 developement */
    62 #   /* F. Ambacher(anakor@snafu.de) 05.2008 */
    63 #   ifdef BUILD_SDL
    64 #    define DECLSPEC    __declspec(dllexport)
    65 #   else
    66 #    define DECLSPEC
    67 #   endif
    68 #  else
    69 #   define DECLSPEC
    70 #  endif
    71 # else
    72 #  if defined(__GNUC__) && __GNUC__ >= 4
    73 #   define DECLSPEC	__attribute__ ((visibility("default")))
    74 #  else
    75 #   define DECLSPEC
    76 #  endif
    77 # endif
    78 #endif
    79 
    80 /* By default SDL uses the C calling convention */
    81 #ifndef SDLCALL
    82 # if defined(__WIN32__) && !defined(__GNUC__)
    83 #  define SDLCALL __cdecl
    84 # elif defined(__OS2__)
    85 #  if defined (__GNUC__) && __GNUC__ < 4
    86 #   /* Added support for GCC-EMX <v4.x */
    87 #   /* this is needed for XFree86/OS2 developement */
    88 #   /* F. Ambacher(anakor@snafu.de) 05.2008 */
    89 #   define SDLCALL _cdecl
    90 #  else
    91 #   /* On other compilers on OS/2, we use the _System calling convention */
    92 #   /* to be compatible with every compiler */
    93 #   define SDLCALL _System
    94 #  endif
    95 # else
    96 #  define SDLCALL
    97 # endif
    98 #endif /* SDLCALL */
    99 
   100 #ifdef __SYMBIAN32__ 
   101 #ifndef EKA2 
   102 #undef DECLSPEC
   103 #define DECLSPEC
   104 #elif !defined(__WINS__)
   105 #undef DECLSPEC
   106 #define DECLSPEC __declspec(dllexport)
   107 #endif /* !EKA2 */
   108 #endif /* __SYMBIAN32__ */
   109 
   110 /* Force structure packing at 4 byte alignment.
   111    This is necessary if the header is included in code which has structure
   112    packing set to an alternate value, say for loading structures from disk.
   113    The packing is reset to the previous value in close_code.h
   114  */
   115 #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__)
   116 #ifdef _MSC_VER
   117 #pragma warning(disable: 4103)
   118 #endif
   119 #ifdef __BORLANDC__
   120 #pragma nopackwarning
   121 #endif
   122 #pragma pack(push,4)
   123 #elif (defined(__MWERKS__) && defined(__MACOS__))
   124 #pragma options align=mac68k4byte
   125 #pragma enumsalwaysint on
   126 #endif /* Compiler needs structure packing set */
   127 
   128 /* Set up compiler-specific options for inlining functions */
   129 #ifndef SDL_INLINE_OKAY
   130 #ifdef __GNUC__
   131 #define SDL_INLINE_OKAY
   132 #else
   133 /* Add any special compiler-specific cases here */
   134 #if defined(_MSC_VER) || defined(__BORLANDC__) || \
   135     defined(__DMC__) || defined(__SC__) || \
   136     defined(__WATCOMC__) || defined(__LCC__) || \
   137     defined(__DECC) || defined(__EABI__)
   138 #ifndef __inline__
   139 #define __inline__	__inline
   140 #endif
   141 #define SDL_INLINE_OKAY
   142 #else
   143 #if !defined(__MRC__) && !defined(_SGI_SOURCE)
   144 #ifndef __inline__
   145 #define __inline__ inline
   146 #endif
   147 #define SDL_INLINE_OKAY
   148 #endif /* Not a funky compiler */
   149 #endif /* Visual C++ */
   150 #endif /* GNU C */
   151 #endif /* SDL_INLINE_OKAY */
   152 
   153 /* If inlining isn't supported, remove "__inline__", turning static
   154    inlined functions into static functions (resulting in code bloat
   155    in all files which include the offending header files)
   156 */
   157 #ifndef SDL_INLINE_OKAY
   158 #define __inline__
   159 #endif
   160 
   161 /* Apparently this is needed by several Windows compilers */
   162 #if !defined(__MACH__)
   163 #ifndef NULL
   164 #ifdef __cplusplus
   165 #define NULL 0
   166 #else
   167 #define NULL ((void *)0)
   168 #endif
   169 #endif /* NULL */
   170 #endif /* ! Mac OS X - breaks precompiled headers */