include/begin_code.h
author Sam Lantinga <slouken@libsdl.org>
Thu, 28 Feb 2002 00:28:26 +0000
changeset 288 2f5a6062db86
parent 274 051b991765ba
child 297 f6ffac90895c
permissions -rw-r--r--
Updated for Watcom C++ and LCC compilers
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997, 1998, 1999, 2000, 2001  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 # ifdef __BEOS__
    37 #  if defined(__GNUC__)
    38 #   define DECLSPEC	__declspec(dllexport)
    39 #  else
    40 #   define DECLSPEC	__declspec(export)
    41 #  endif
    42 # else
    43 # ifdef WIN32
    44 #  ifdef __BORLANDC__
    45 #   ifdef BUILD_SDL
    46 #    define DECLSPEC __declspec(dllexport)
    47 #   else
    48 #    define DECLSPEC __declspec(dllimport)
    49 #   endif
    50 #  else
    51 #   define DECLSPEC	__declspec(dllexport)
    52 #  endif
    53 # else
    54 #  define DECLSPEC
    55 # endif
    56 # endif
    57 #endif
    58 
    59 /* Removed DECLSPEC on Symbian OS because SDL cannot be a DLL in EPOC */
    60 #ifdef __SYMBIAN32__ 
    61 #undef DECLSPEC
    62 #define DECLSPEC
    63 #endif /* __SYMBIAN32__ */
    64 
    65 /* Force structure packing at 4 byte alignment.
    66    This is necessary if the header is included in code which has structure
    67    packing set to an alternate value, say for loading structures from disk.
    68    The packing is reset to the previous value in close_code.h
    69  */
    70 #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__)
    71 #ifdef _MSC_VER
    72 #pragma warning(disable: 4103)
    73 #endif
    74 #ifdef __BORLANDC__
    75 #pragma nopackwarning
    76 #endif
    77 #pragma pack(push,4)
    78 #elif (defined(__MWERKS__) && defined(macintosh))
    79 #pragma options align=mac68k4byte
    80 #pragma enumsalwaysint on
    81 #endif /* Compiler needs structure packing set */
    82 
    83 /* Set up compiler-specific options for inlining functions */
    84 #ifndef SDL_INLINE_OKAY
    85 #ifdef __GNUC__
    86 #define SDL_INLINE_OKAY
    87 #else
    88 /* Add any special compiler-specific cases here */
    89 #if defined(_MSC_VER) || defined(__BORLANDC__) || \
    90     defined(__DMC__) || defined(__SC__) || \
    91     defined(__WATCOMC__) || defined(__LCC__)
    92 #ifndef __inline__
    93 #define __inline__	__inline
    94 #endif
    95 #define SDL_INLINE_OKAY
    96 #else
    97 #if !defined(__MRC__) && !defined(_SGI_SOURCE)
    98 #define __inline__ inline
    99 #define SDL_INLINE_OKAY
   100 #endif /* Not a funky compiler */
   101 #endif /* Visual C++ */
   102 #endif /* GNU C */
   103 #endif /* SDL_INLINE_OKAY */
   104 
   105 /* If inlining isn't supported, remove "__inline__", turning static
   106    inlined functions into static functions (resulting in code bloat
   107    in all files which include the offending header files)
   108 */
   109 #ifndef SDL_INLINE_OKAY
   110 #define __inline__
   111 #endif
   112 
   113 /* Apparently this is needed by several Windows compilers */
   114 #ifndef NULL
   115 #ifdef __cplusplus
   116 #define NULL 0
   117 #else
   118 #define NULL ((void *)0)
   119 #endif
   120 #endif /* NULL */