SDL_syswm.h provides the platform specific types by default again

You can enable and disable subsystems with SDL_ENABLE_SYSWM_*/SDL_DISABLE_SYSWM_* and you can disable the type forward declarations with SDL_DISABLE_SYSWM_*_TYPES

docs/README-migration.md

@@ -813,16 +813,6 @@ The following functions have been renamed:
 
 ## SDL_syswm.h
 
-This header no longer includes platform specific headers and type definitions, instead allowing you to include the ones appropriate for your use case. You should define one or more of the following to enable the relevant platform-specific support:
-* SDL_ENABLE_SYSWM_ANDROID
-* SDL_ENABLE_SYSWM_COCOA
-* SDL_ENABLE_SYSWM_KMSDRM
-* SDL_ENABLE_SYSWM_UIKIT
-* SDL_ENABLE_SYSWM_VIVANTE
-* SDL_ENABLE_SYSWM_WAYLAND
-* SDL_ENABLE_SYSWM_WINDOWS
-* SDL_ENABLE_SYSWM_X11
-
 The structures in this file are versioned separately from the rest of SDL, allowing better backwards compatibility and limited forwards compatibility with your application. Instead of calling `SDL_VERSION(&info.version)` before calling SDL_GetWindowWMInfo(), you pass the version in explicitly as SDL_SYSWM_CURRENT_VERSION so SDL knows what fields you expect to be filled out.
 
 ### SDL_GetWindowWMInfo

include/SDL3/SDL_syswm.h

@@ -30,8 +30,8 @@
 
 #include <SDL3/SDL_stdinc.h>
 #include <SDL3/SDL_error.h>
+#include <SDL3/SDL_platform.h>
 #include <SDL3/SDL_video.h>
-#include <SDL3/SDL_version.h>
 
 /**
  *  \brief SDL_syswm.h
@@ -40,22 +40,146 @@
  *  which contains window-manager specific information and arrives whenever
  *  an unhandled window event occurs.  This event is ignored by default, but
  *  you can enable it with SDL_SetEventEnabled().
- *
- *  As of SDL 3.0, this file no longer includes the platform specific headers
- *  and types. You should include the headers you need and define one or more
- *  of the following for the subsystems you're working with:
- *
- *      SDL_ENABLE_SYSWM_ANDROID
- *      SDL_ENABLE_SYSWM_COCOA
- *      SDL_ENABLE_SYSWM_KMSDRM
- *      SDL_ENABLE_SYSWM_UIKIT
- *      SDL_ENABLE_SYSWM_VIVANTE
- *      SDL_ENABLE_SYSWM_WAYLAND
- *      SDL_ENABLE_SYSWM_WINDOWS
- *      SDL_ENABLE_SYSWM_WINRT
- *      SDL_ENABLE_SYSWM_X11
  */
-struct SDL_SysWMinfo;
+
+/**
+ *  The available subsystems based on platform
+ */
+#if !defined(SDL_DISABLE_SYSWM_PLATFORMS)
+
+#ifndef SDL_DISABLE_SYSWM_ANDROID
+#ifdef __ANDROID__
+#define SDL_ENABLE_SYSWM_ANDROID
+#endif
+#endif /* !SDL_DISABLE_SYSWM_ANDROID */
+
+#ifndef SDL_DISABLE_SYSWM_COCOA
+#ifdef __MACOS__
+#define SDL_ENABLE_SYSWM_COCOA
+#endif
+#endif /* !SDL_DISABLE_SYSWM_COCOA */
+
+#ifndef SDL_DISABLE_SYSWM_HAIKU
+#ifdef __HAIKU__
+#define SDL_ENABLE_SYSWM_HAIKU
+#endif
+#endif /* !SDL_DISABLE_SYSWM_HAIKU */
+
+#ifndef SDL_DISABLE_SYSWM_KMSDRM
+#if defined(__LINUX__) || defined(__FREEBSD__) || defined(__OPENBSD__)
+#define SDL_ENABLE_SYSWM_KMSDRM
+#endif
+#endif /* !SDL_DISABLE_SYSWM_KMSDRM */
+
+#ifndef SDL_DISABLE_SYSWM_RISCOS
+#ifdef __RISCOS__
+#define SDL_ENABLE_SYSWM_RISCOS
+#endif
+#endif /* !SDL_DISABLE_SYSWM_RISCOS */
+
+#ifndef SDL_DISABLE_SYSWM_UIKIT
+#if defined(__IOS__) || defined(__TVOS__)
+#define SDL_ENABLE_SYSWM_UIKIT
+#endif
+#endif /* !SDL_DISABLE_SYSWM_UIKIT */
+
+#ifndef SDL_DISABLE_SYSWM_VIVANTE
+/* Not enabled by default */
+#endif /* !SDL_DISABLE_SYSWM_VIVANTE */
+
+#ifndef SDL_DISABLE_SYSWM_WAYLAND
+#if defined(__LINUX__) || defined(__FREEBSD__)
+#define SDL_ENABLE_SYSWM_WAYLAND
+#endif
+#endif /* !SDL_DISABLE_SYSWM_WAYLAND */
+
+#ifndef SDL_DISABLE_SYSWM_WINDOWS
+#ifdef __WIN32__
+#define SDL_ENABLE_SYSWM_WINDOWS
+#endif
+#endif /* !SDL_DISABLE_SYSWM_WINDOWS */
+
+#ifndef SDL_DISABLE_SYSWM_WINRT
+#ifdef __WINRT__
+#define SDL_ENABLE_SYSWM_WINRT
+#endif
+#endif /* !SDL_DISABLE_SYSWM_WINRT */
+
+#ifndef SDL_DISABLE_SYSWM_X11
+#if defined(__unix__) && !defined(__WIN32__) && !defined(__ANDROID__)
+#define SDL_ENABLE_SYSWM_X11
+#endif
+#endif /* !SDL_DISABLE_SYSWM_X11 */
+
+#endif /* !SDL_DISABLE_SYSWM_PLATFORMS */
+
+/**
+ *  Forward declaration of types used by subsystems
+ */
+#ifndef SDL_DISABLE_SYSWM_TYPES
+
+#if defined(SDL_ENABLE_SYSWM_ANDROID) && !defined(SDL_DISABLE_SYSWM_ANDROID_TYPES)
+typedef struct ANativeWindow ANativeWindow;
+typedef void *EGLSurface;
+#endif /* SDL_ENABLE_SYSWM_ANDROID */
+
+#if defined(SDL_ENABLE_SYSWM_COCOA) && !defined(SDL_DISABLE_SYSWM_COCOA_TYPES)
+#ifdef __OBJC__
+@class NSWindow;
+#else
+typedef struct _NSWindow NSWindow;
+#endif
+#endif /* SDL_ENABLE_SYSWM_COCOA */
+
+#if defined(SDL_ENABLE_SYSWM_KMSDRM) && !defined(SDL_DISABLE_SYSWM_KMSDRM_TYPES)
+struct gbm_device;
+#endif /* SDL_ENABLE_SYSWM_KMSDRM */
+
+#if defined(SDL_ENABLE_SYSWM_UIKIT) && !defined(SDL_DISABLE_SYSWM_UIKIT_TYPES)
+#ifdef __OBJC__
+#include <UIKit/UIKit.h>
+#else
+typedef struct _UIWindow UIWindow;
+typedef struct _UIViewController UIViewController;
+#endif
+typedef Uint32 GLuint;
+#endif /* SDL_ENABLE_SYSWM_UIKIT */
+
+#if defined(SDL_ENABLE_SYSWM_VIVANTE) && !defined(SDL_DISABLE_SYSWM_VIVANTE_TYPES)
+#include <SDL3/SDL_egl.h>
+#endif /* SDL_ENABLE_SYSWM_VIVANTE */
+
+#if defined(SDL_ENABLE_SYSWM_WAYLAND) && !defined(SDL_DISABLE_SYSWM_WAYLAND_TYPES)
+struct wl_display;
+struct wl_egl_window;
+struct wl_surface;
+struct xdg_popup;
+struct xdg_positioner;
+struct xdg_surface;
+struct xdg_toplevel;
+#endif /* SDL_ENABLE_SYSWM_WAYLAND */
+
+#if defined(SDL_ENABLE_SYSWM_WINDOWS) && !defined(SDL_DISABLE_SYSWM_WINDOWS_TYPES)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX   /* don't define min() and max(). */
+#define NOMINMAX
+#endif
+#include <windows.h>
+#endif /* SDL_ENABLE_SYSWM_WINDOWS */
+
+#if defined(SDL_ENABLE_SYSWM_WINRT) && !defined(SDL_DISABLE_SYSWM_WINRT_TYPES)
+#include <Inspectable.h>
+#endif /* SDL_ENABLE_SYSWM_WINRT */
+
+#if defined(SDL_ENABLE_SYSWM_X11) && !defined(SDL_DISABLE_SYSWM_X11_TYPES)
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+#endif /* SDL_ENABLE_SYSWM_X11 */
+
+#endif /* !SDL_DISABLE_SYSWM_TYPES */
+
 
 #include <SDL3/SDL_begin_code.h>
 /* Set up for C function definitions, even when using C++ */
@@ -72,7 +196,6 @@ extern "C" {
 #define SDL_METALVIEW_TAG 255
 
 
-#if !defined(SDL_PROTOTYPES_ONLY)
 /**
  *  These are the various supported windowing subsystems
  */
@@ -235,8 +358,6 @@ struct SDL_SysWMinfo
 };
 SDL_COMPILE_TIME_ASSERT(SDL_SysWMinfo_size, sizeof(struct SDL_SysWMinfo) == SDL_SYSWM_CURRENT_INFO_SIZE);
 
-#endif /* SDL_PROTOTYPES_ONLY */
-
 typedef struct SDL_SysWMinfo SDL_SysWMinfo;