sdl: gut non-Rockbox platform detection code

This should prevent false positives when simulators for other systems (e.g.
win32).

Change-Id: Ib14a277fbfeb1b0ae141ebc4591d80a2cc0f526d

apps/plugins/sdl/include/SDL_config.h

@@ -26,22 +26,10 @@
 #include "SDL_platform.h"
 
 /* Add any platform that doesn't build using the configure system */
-#if defined(__DREAMCAST__)
+#if defined(__ROCKBOX__)
-#include "SDL_config_dreamcast.h"
-#elif defined(__MACOS__)
-#include "SDL_config_macos.h"
-#elif defined(__MACOSX__)
-#include "SDL_config_macosx.h"
-#elif defined(__SYMBIAN32__)
-#include "SDL_config_symbian.h"  /* must be before win32! */
-#elif defined(__WIN32__)
-#include "SDL_config_win32.h"
-#elif defined(__OS2__)
-#include "SDL_config_os2.h"
-#elif defined(__ROCKBOX__)
 #include "SDL_config_rockbox.h"
 #else
-#include "SDL_config_minimal.h"
+#error This SDL supports Rockbox only!
 #endif /* platform config */
 
 #endif /* _SDL_config_h */

apps/plugins/sdl/include/SDL_platform.h

@@ -27,89 +27,12 @@
 #ifndef _SDL_platform_h
 #define _SDL_platform_h
 
-#if defined(_AIX)
-#undef __AIX__
-#define __AIX__		1
-#endif
-#if defined(__BEOS__)
-#undef __BEOS__
-#define __BEOS__	1
-#endif
-#if defined(__HAIKU__)
-#undef __HAIKU__
-#define __HAIKU__ 1
-#endif
-#if defined(bsdi) || defined(__bsdi) || defined(__bsdi__)
-#undef __BSDI__
-#define __BSDI__	1
-#endif
-#if defined(_arch_dreamcast)
-#undef __DREAMCAST__
-#define __DREAMCAST__	1
-#endif
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-#undef __FREEBSD__
-#define __FREEBSD__	1
-#endif
-#if defined(__HAIKU__)
-#undef __HAIKU__
-#define __HAIKU__	1
-#endif
-#if defined(hpux) || defined(__hpux) || defined(__hpux__)
-#undef __HPUX__
-#define __HPUX__	1
-#endif
-#if defined(sgi) || defined(__sgi) || defined(__sgi__) || defined(_SGI_SOURCE)
-#undef __IRIX__
-#define __IRIX__	1
-#endif
-#if (defined(linux) || defined(__linux) || defined(__linux__)) && !defined(ROCKBOX)
-#undef __LINUX__
-#define __LINUX__	1
-#endif
-#if defined(__APPLE__)
-#undef __MACOSX__
-#define __MACOSX__	1
-#elif defined(macintosh)
-#undef __MACOS__
-#define __MACOS__	1
-#endif
-#if defined(__NetBSD__)
-#undef __NETBSD__
-#define __NETBSD__	1
-#endif
-#if defined(__OpenBSD__)
-#undef __OPENBSD__
-#define __OPENBSD__	1
-#endif
-#if defined(__OS2__)
-#undef __OS2__
-#define __OS2__		1
-#endif
-#if defined(osf) || defined(__osf) || defined(__osf__) || defined(_OSF_SOURCE)
-#undef __OSF__
-#define __OSF__		1
-#endif
-#if defined(__QNXNTO__)
-#undef __QNXNTO__
-#define __QNXNTO__	1
-#endif
-#if defined(riscos) || defined(__riscos) || defined(__riscos__)
-#undef __RISCOS__
-#define __RISCOS__	1
-#endif
-#if defined(__SVR4)
-#undef __SOLARIS__
-#define __SOLARIS__	1
-#endif
-#if defined(WIN32) || defined(_WIN32)
-#undef __WIN32__
-#define __WIN32__	1
-#endif
 #if defined(ROCKBOX)
 #undef __ROCKBOX__
 #undef __LINUX__ /* maybe sim */
 #define __ROCKBOX__ 1
+#else
+#error This SDL supports Rockbox only!
 #endif
 
 #endif /* _SDL_platform_h */