Basically all platforms where SDL_main.h renames main() to SDL_main()
use the platform-specific main() (or WinMain() or whatever)
implementations in SDL_main_impl.h - and that renaming is enabled with:
#if defined(SDL_MAIN_NEEDED) || defined(SDL_MAIN_AVAILABLE) \
|| defined(SDL_MAIN_USE_CALLBACKS)
#define main SDL_main
#endif
The only exception is Android, where main() *is* renamed, but
SDL_main_impl.h isn't used, because SDL_main() is called from Java.
So I think it's cleaner and less error-prone (for adding additional
platforms that need SDL_main() in the future), to use the same check
for including SDL_main_impl.h as is used for `#define main SDL_main`
and only list the exceptions (currently Android) there explicitly.
If new platforms like Android turn up, they can easily be added there
by inserting "|| defined(SDL_PLATFORM_WEIRDPLATFORM)" right next
to the Android check.
See also https://github.com/libsdl-org/SDL/issues/11068#issuecomment-2399907535
823b218051