Improve support for private platforms (#11220)

include/SDL3/SDL_events.h

@@ -229,6 +229,12 @@ typedef enum SDL_EventType
     SDL_EVENT_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */
     SDL_EVENT_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
 
+    /* Reserved events for private platforms */
+    SDL_EVENT_PRIVATE0 = 0x4000,
+    SDL_EVENT_PRIVATE1,
+    SDL_EVENT_PRIVATE2,
+    SDL_EVENT_PRIVATE3,
+
     /* Internal events */
     SDL_EVENT_POLL_SENTINEL = 0x7F00, /**< Signals the end of an event poll cycle */
 

include/SDL3/SDL_main.h

@@ -49,7 +49,11 @@
 #include <SDL3/SDL_events.h>
 
 #ifndef SDL_MAIN_HANDLED
-    #ifdef SDL_PLATFORM_WIN32
+    #if defined(SDL_PLATFORM_PRIVATE_MAIN)
+        /* Private platforms may have their own ideas about entry points. */
+        #include "SDL_main_private.h"
+
+    #elif defined(SDL_PLATFORM_WIN32)
         /* On Windows SDL provides WinMain(), which parses the command line and passes
            the arguments to your main function.
 

include/SDL3/SDL_main_impl.h

@@ -68,7 +68,11 @@
        unless the real entry point needs to be somewhere else entirely, like Android where it's in Java code */
     #if (!defined(SDL_MAIN_USE_CALLBACKS) || defined(SDL_MAIN_CALLBACK_STANDARD)) && !defined(SDL_MAIN_EXPORTED)
 
-        #if defined(SDL_PLATFORM_WINDOWS)
+        #if defined(SDL_PLATFORM_PRIVATE_MAIN)
+            /* Private platforms may have their own ideas about entry points. */
+            #include "SDL_main_impl_private.h"
+
+        #elif defined(SDL_PLATFORM_WINDOWS)
 
             /* these defines/typedefs are needed for the WinMain() definition */
             #ifndef WINAPI

include/build_config/SDL_build_config.h

@@ -31,7 +31,9 @@
  */
 
 /* Add any platform that doesn't build using the configure system. */
-#if defined(SDL_PLATFORM_WIN32)
+#if defined(SDL_PLATFORM_PRIVATE)
+#include "SDL_build_config_private.h"
+#elif defined(SDL_PLATFORM_WIN32)
 #include "SDL_build_config_windows.h"
 #elif defined(SDL_PLATFORM_WINGDK)
 #include "SDL_build_config_wingdk.h"

include/build_config/SDL_build_config.h.cmake

@@ -75,8 +75,10 @@
 #cmakedefine HAVE_MALLOC 1
 #cmakedefine HAVE_CALLOC 1
 #cmakedefine HAVE_REALLOC 1
+#cmakedefine HAVE_FDATASYNC 1
 #cmakedefine HAVE_FREE 1
 #cmakedefine HAVE_GETENV 1
+#cmakedefine HAVE_GETHOSTNAME 1
 #cmakedefine HAVE_SETENV 1
 #cmakedefine HAVE_PUTENV 1
 #cmakedefine HAVE_UNSETENV 1

include/build_config/SDL_build_config_android.h

@@ -57,8 +57,10 @@
 #define HAVE_MALLOC 1
 #define HAVE_CALLOC 1
 #define HAVE_REALLOC    1
+#define HAVE_FDATASYNC 1
 #define HAVE_FREE   1
 #define HAVE_GETENV 1
+#define HAVE_GETHOSTNAME 1
 #define HAVE_PUTENV 1
 #define HAVE_SETENV 1
 #define HAVE_UNSETENV   1

include/build_config/SDL_build_config_emscripten.h

@@ -60,8 +60,10 @@
 #define HAVE_MALLOC 1
 #define HAVE_CALLOC 1
 #define HAVE_REALLOC 1
+#define HAVE_FDATASYNC 1
 #define HAVE_FREE 1
 #define HAVE_GETENV 1
+#define HAVE_GETHOSTNAME 1
 #define HAVE_SETENV 1
 #define HAVE_PUTENV 1
 #define HAVE_UNSETENV 1

include/build_config/SDL_build_config_ios.h

@@ -49,8 +49,10 @@
 #define HAVE_MALLOC 1
 #define HAVE_CALLOC 1
 #define HAVE_REALLOC    1
+#define HAVE_FDATASYNC 1
 #define HAVE_FREE   1
 #define HAVE_GETENV 1
+#define HAVE_GETHOSTNAME 1
 #define HAVE_PUTENV 1
 #define HAVE_SETENV 1
 #define HAVE_UNSETENV   1

include/build_config/SDL_build_config_macos.h

@@ -54,8 +54,10 @@
 #define HAVE_MALLOC 1
 #define HAVE_CALLOC 1
 #define HAVE_REALLOC    1
+#define HAVE_FDATASYNC 1
 #define HAVE_FREE   1
 #define HAVE_GETENV 1
+#define HAVE_GETHOSTNAME 1
 #define HAVE_SETENV 1
 #define HAVE_PUTENV 1
 #define HAVE_UNSETENV   1

include/build_config/SDL_build_config_windows.h

@@ -135,6 +135,7 @@ typedef unsigned int uintptr_t;
 #define HAVE_MALLOC 1
 #define HAVE_CALLOC 1
 #define HAVE_REALLOC 1
+#define HAVE_FDATASYNC 1
 #define HAVE_FREE 1
 #define HAVE_ABS 1
 #define HAVE_MEMSET 1

include/build_config/SDL_build_config_wingdk.h

@@ -75,6 +75,7 @@
 #define HAVE_LIBC   1
 #define HAVE_MALLOC 1
 #define HAVE_CALLOC 1
+#define HAVE_FDATASYNC 1
 #define HAVE_REALLOC 1
 #define HAVE_FREE 1
 #define HAVE_ABS 1