[SDL] Bug: Compiling SDL apps

[John Silicon]

Sam Lantinga wrote:
>> If it has been broken, I'm not familiar enough Cygwin's build tools to 
>> give an exact way to fix it, but my gut wants me to ask if there is any 
>> /clean/ way to detect the difference between `c` and `c++` and force c++ 
>> (from SDL's .h files) to treat make SDL_main compile with C naming 
>> conventions?
>>     
>
> Does this work?
>
> #define main	__cdecl SDL_main
>
> 	-Sam Lantinga, Senior Software Engineer, Blizzard Entertainment
>
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>   
No, it won't work, and won't even compile (atleast in any compiler I 
have on hand, that is) -- "int main(...)" would become "int __cdecl 
main(...)", which is not in the correct order for those words.  Wouldn't 
work because __cdecl only affects the way the arguments are handled -- 
not the way C++ mangles names.

After actually looking at the source in SDL_main.h (from 1.2.9), it 
seems there actually is a comment in there about having to use the 
`extern "C"` jiggies in there:

/* The application's main() function must be called with C linkage,
   and should be declared like this:
#ifdef __cplusplus
extern "C"
#endif
    int main(int argc, char *argv[])
    {
    }
 */

This strikes me as odd -- I don't think I've ever actually had to use it 
before -- but, then, I've been using different compilers than those the 
original poster is -- perhaps they're smart enough to realize that since 
the previous definition of SDL_main is marked `extern "C"` that it 
should also be `extern "C"`d.

- Silicon