Define SDL_PLATFORM_* macros instead of underscored ones (#8875)

VisualC-GDK/tests/testgdk/src/testgdk.cpp

@@ -311,7 +311,7 @@ loop()
         if (event.type == SDL_EVENT_KEY_DOWN && !event.key.repeat) {
             SDL_Log("Initial SDL_EVENT_KEY_DOWN: %s", SDL_GetScancodeName(event.key.keysym.scancode));
         }
-#if defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
         /* On Xbox, ignore the keydown event because the features aren't supported */
         if (event.type != SDL_EVENT_KEY_DOWN) {
             SDLTest_CommonEvent(state, &event, &done);

WhatsNew.txt

@@ -8,8 +8,8 @@ This is a list of major changes in SDL's version history.
 General:
 * SDL headers should now be included as `#include <SDL3/SDL.h>`
 * Many functions and symbols have changed since SDL 2.0, see the [migration guide](docs/README-migration.md) for details
-* The preprocessor symbol __MACOSX__ has been renamed __MACOS__
+* The preprocessor symbol __MACOSX__ has been renamed SDL_PLATFORM_MACOS
-* The preprocessor symbol __IPHONEOS__ has been renamed __IOS__
+* The preprocessor symbol __IPHONEOS__ has been renamed SDL_PLATFORM_IOS
 * SDL_stdinc.h no longer includes stdio.h, stdlib.h, etc., it only provides the SDL C runtime functionality
 * SDL_intrin.h now includes the intrinsics headers that were in SDL_cpuinfo.h
 * Added SDL_GetSystemTheme() to return whether the system is using a dark or light color theme, and SDL_EVENT_SYSTEM_THEME_CHANGED is sent when this changes

build-scripts/SDL_migration.cocci

@@ -2903,3 +2903,4 @@ expression e1, e2, e3, e4;
 @@
 - SDL_threadID
 + SDL_ThreadID
+  (...)

build-scripts/rename_headers.py

@@ -7,17 +7,22 @@ import pathlib
 import re
 
 
-def main():
+def do_include_replacements(paths):
     replacements = [
+        ( re.compile(r"(?:[\"<])(?:SDL2/)?SDL_image.h(?:[\">])"), r"<SDL3_image/SDL_image.h>" ),
+        ( re.compile(r"(?:[\"<])(?:SDL2/)?SDL_mixer.h(?:[\">])"), r"<SDL3_mixer/SDL_mixer.h>" ),
+        ( re.compile(r"(?:[\"<])(?:SDL2/)?SDL_net.h(?:[\">])"), r"<SDL3_net/SDL_net.h>" ),
+        ( re.compile(r"(?:[\"<])(?:SDL2/)?SDL_rtf.h(?:[\">])"), r"<SDL3_rtf/SDL_rtf.h>" ),
+        ( re.compile(r"(?:[\"<])(?:SDL2/)?SDL_ttf.h(?:[\">])"), r"<SDL3_ttf/SDL_ttf.h>" ),
         ( re.compile(r"(?:[\"<])(?:SDL2/)?SDL_gamecontroller.h(?:[\">])"), r"<SDL3/SDL_gamepad.h>" ),
         ( re.compile(r"(?:[\"<])(?:SDL2/)?begin_code.h(?:[\">])"), r"<SDL3/SDL_begin_code.h>" ),
         ( re.compile(r"(?:[\"<])(?:SDL2/)?close_code.h(?:[\">])"), r"<SDL3/SDL_close_code.h>" ),
         ( re.compile(r"(?:[\"<])(?:SDL2/)?(SDL[_a-z0-9]*\.h)(?:[\">])"), r"<SDL3/\1>" )
     ]
-    for entry in args.args:
+    for entry in paths:
         path = pathlib.Path(entry)
         if not path.exists():
-            print("%s doesn't exist, skipping" % entry)
+            print("{} does not exist, skipping".format(entry))
             continue
 
         replace_headers_in_path(path, replacements)
@@ -55,17 +60,16 @@ def replace_headers_in_path(path, replacements):
             replace_headers_in_file(path, replacements)
 
 
-if __name__ == "__main__":
+def main():
-
+    parser = argparse.ArgumentParser(fromfile_prefix_chars='@', description="Rename #include's for SDL3.")
-    parser = argparse.ArgumentParser(fromfile_prefix_chars='@')
+    parser.add_argument("args", metavar="PATH", nargs="*", help="Input source file")
-    parser.add_argument("args", nargs="*")
     args = parser.parse_args()
 
     try:
-        main()
+        do_include_replacements(args.args)
     except Exception as e:
         print(e)
-        exit(-1)
+        return 1
-
-    exit(0)
 
+if __name__ == "__main__":
+    raise SystemExit(main())

build-scripts/rename_macros.py

@@ -0,0 +1,139 @@
+#!/usr/bin/env python3
+#
+# This script renames SDL macros in the specified paths
+
+import argparse
+import pathlib
+import re
+
+
+class PlatformMacrosCheck:
+    RENAMED_MACROS = {
+        "__AIX__": "SDL_PLATFORM_AIX",
+        "__HAIKU__": "SDL_PLATFORM_HAIKU",
+        "__BSDI__": "SDL_PLATFORM_BSDI",
+        "__FREEBSD__": "SDL_PLATFORM_FREEBSD",
+        "__HPUX__": "SDL_PLATFORM_HPUX",
+        "__IRIX__": "SDL_PLATFORM_IRIX",
+        "__LINUX__": "SDL_PLATFORM_LINUX",
+        "__OS2__": "SDL_PLATFORM_OS2",
+        # "__ANDROID__": "SDL_PLATFORM_ANDROID,
+        "__NGAGE__": "SDL_PLATFORM_NGAGE",
+        "__APPLE__": "SDL_PLATFORM_APPLE",
+        "__TVOS__": "SDL_PLATFORM_TVOS",
+        "__IPHONEOS__": "SDL_PLATFORM_IOS",
+        "__MACOSX__": "SDL_PLATFORM_MACOS",
+        "__NETBSD__": "SDL_PLATFORM_NETBSD",
+        "__OPENBSD__": "SDL_PLATFORM_OPENBSD",
+        "__OSF__": "SDL_PLATFORM_OSF",
+        "__QNXNTO__": "SDL_PLATFORM_QNXNTO",
+        "__RISCOS__": "SDL_PLATFORM_RISCOS",
+        "__SOLARIS__": "SDL_PLATFORM_SOLARIS",
+        "__PSP__": "SDL_PLATFORM_PSP",
+        "__PS2__": "SDL_PLATFORM_PS2",
+        "__VITA__": "SDL_PLATFORM_VITA",
+        "__3DS__": "SDL_PLATFORM_3DS",
+        # "__unix__": "SDL_PLATFORM_UNIX,
+        "__WINRT__": "SDL_PLATFORM_WINRT",
+        "__XBOXSERIES__": "SDL_PLATFORM_XBOXSERIES",
+        "__XBOXONE__": "SDL_PLATFORM_XBOXONE",
+        "__WINDOWS__": "SDL_PLATFORM_WINDOWS",
+        "__WIN32__": "SDL_PLATFORM_WINRT",
+        # "__CYGWIN_": "SDL_PLATFORM_CYGWIN",
+        "__WINGDK__": "SDL_PLATFORM_WINGDK",
+        "__GDK__": "SDL_PLATFORM_GDK",
+        # "__EMSCRIPTEN__": "SDL_PLATFORM_EMSCRIPTEN",
+    }
+
+    DEPRECATED_MACROS = {
+        "__DREAMCAST__",
+        "__NACL__",
+        "__PNACL__",
+    }
+
+    def __init__(self):
+        self.re_pp_command = re.compile(r"^[ \t]*#[ \t]*(\w+).*")
+        self.re_platform_macros = re.compile(r"\W(" + "|".join(self.RENAMED_MACROS.keys()) + r")(?:\W|$)")
+        self.re_deprecated_macros = re.compile(r"\W(" + "|".join(self.DEPRECATED_MACROS) + r")(?:\W|$)")
+
+    def run(self, contents):
+        def cb(m):
+            macro = m.group(1)
+            original = m.group(0)
+            match_start, _ = m.span(0)
+            platform_start, platform_end = m.span(1)
+            new_text = "{0} /* FIXME: use '#ifdef {0}' or 'defined({0})' */".format(self.RENAMED_MACROS[macro])
+            r = original[:(platform_start-match_start)] + new_text + original[platform_end-match_start:]
+            return r
+        contents, _ = self.re_platform_macros.subn(cb, contents)
+
+        def cb(m):
+            macro = m.group(1)
+            original = m.group(0)
+            match_start, _ = m.span(0)
+            platform_start, platform_end = m.span(1)
+            new_text = "{0} /* FIXME: {0} has been removed in SDL3 */".format(macro)
+            r = original[:(platform_start-match_start)] + new_text + original[platform_end-match_start:]
+            return r
+        contents, _ = self.re_deprecated_macros.subn(cb, contents)
+        return contents
+
+
+def apply_checks(paths):
+    checks = (
+        PlatformMacrosCheck(),
+    )
+
+    for entry in paths:
+        path = pathlib.Path(entry)
+        if not path.exists():
+            print("{} does not exist, skipping".format(entry))
+            continue
+        apply_checks_in_path(path, checks)
+
+
+def apply_checks_in_file(file, checks):
+    try:
+        with file.open("r", encoding="UTF-8", newline="") as rfp:
+            original = rfp.read()
+            contents = original
+            for check in checks:
+                contents = check.run(contents)
+            if contents != original:
+                with file.open("w", encoding="UTF-8", newline="") as wfp:
+                    wfp.write(contents)
+    except UnicodeDecodeError:
+        print("%s is not text, skipping" % file)
+    except Exception as err:
+        print("%s" % err)
+
+
+def apply_checks_in_dir(path, checks):
+    for entry in path.glob("*"):
+        if entry.is_dir():
+            apply_checks_in_dir(entry, checks)
+        else:
+            print("Processing %s" % entry)
+            apply_checks_in_file(entry, checks)
+
+
+def apply_checks_in_path(path, checks):
+        if path.is_dir():
+            apply_checks_in_dir(path, checks)
+        else:
+            apply_checks_in_file(path, checks)
+
+
+def main():
+    parser = argparse.ArgumentParser(fromfile_prefix_chars='@', description="Rename macros for SDL3")
+    parser.add_argument("args", nargs="*", help="Input source files")
+    args = parser.parse_args()
+
+    try:
+        apply_checks(args.args)
+    except Exception as e:
+        print(e)
+        return 1
+
+if __name__ == "__main__":
+    raise SystemExit(main())

cmake/sdlchecks.cmake

@@ -849,7 +849,7 @@ macro(CheckPTHREAD)
         check_c_source_compiles("
             #include <pthread.h>
             int main(int argc, char **argv) {
-              #ifdef __APPLE__
+              #ifdef SDL_PLATFORM_APPLE
               pthread_setname_np(\"\");
               #else
               pthread_setname_np(pthread_self(),\"\");

docs/README-gdk.md

@@ -21,7 +21,7 @@ Windows GDK Status
 The Windows GDK port supports the full set of Win32 APIs, renderers, controllers, input devices, etc., as the normal Windows x64 build of SDL.
 
 * Additionally, the GDK port adds the following:
-  * Compile-time platform detection for SDL programs. The `__GDK__` is `#define`d on every GDK platform, and the  `__WINGDK__` is `#define`d on Windows GDK, specifically. (This distinction exists because other GDK platforms support a smaller subset of functionality. This allows you to mark code for "any" GDK separate from Windows GDK.)
+  * Compile-time platform detection for SDL programs. The `SDL_PLATFORM_GDK` is `#define`d on every GDK platform, and the  `SDL_PLATFORM_WINGDK` is `#define`d on Windows GDK, specifically. (This distinction exists because other GDK platforms support a smaller subset of functionality. This allows you to mark code for "any" GDK separate from Windows GDK.)
   * GDK-specific setup:
     * Initializing/uninitializing the game runtime, and initializing Xbox Live services
     * Creating a global task queue and setting it as the default for the process. When running any async operations, passing in `NULL` as the task queue will make the task get added to the global task queue.
@@ -149,7 +149,7 @@ Xbox GDKX Setup
 In general, the same process in the Windows GDK instructions work. There are just a few additional notes:
 * For Xbox One consoles, use the Gaming.Xbox.XboxOne.x64 target
 * For Xbox Series consoles, use the Gaming.Xbox.Scarlett.x64 target
-* The Xbox One target sets the `__XBOXONE__` define and the Xbox Series target sets the `__XBOXSERIES__` define
+* The Xbox One target sets the `SDL_PLATFORM_XBOXONE` define and the Xbox Series target sets the `SDL_PLATFORM_XBOXSERIES` define
 * You don't need to link against the Xbox.Services Thunks lib nor include that dll in your package (it doesn't exist for Xbox)
 * The shader blobs for Xbox are created in a pre-build step for the Xbox targets, rather than included in the source (due to NDA and version compatability reasons)
 * To create a package, use:

docs/README-ios.md

@@ -238,7 +238,7 @@ e.g.
     {
         ... initialize game ...
 
-    #ifdef __IOS__
+    #ifdef SDL_PLATFORM_IOS
         // Initialize the Game Center for scoring and matchmaking
         InitGameCenter();
 

docs/README-migration.md

@@ -13,11 +13,17 @@ rename_symbols.py --all-symbols source_code_path
 
 It's also possible to apply a semantic patch to migrate more easily to SDL3: [SDL_migration.cocci](https://github.com/libsdl-org/SDL/blob/main/build-scripts/SDL_migration.cocci)
 
-SDL headers should now be included as `#include <SDL3/SDL.h>`. Typically that's the only header you'll need in your application unless you are using OpenGL or Vulkan functionality. We have provided a handy Python script [rename_headers.py](https://github.com/libsdl-org/SDL/blob/main/build-scripts/rename_headers.py) to rename SDL2 headers to their SDL3 counterparts:
+SDL headers should now be included as `#include <SDL3/SDL.h>`. Typically that's the only SDL header you'll need in your application unless you are using OpenGL or Vulkan functionality. SDL_image, SDL_mixer, SDL_net, SDL_ttf and SDL_rtf have also their preferred include path changed: for SDL_image, it becomes `#include <SDL3_image/SDL_image.h>`. We have provided a handy Python script [rename_headers.py](https://github.com/libsdl-org/SDL/blob/main/build-scripts/rename_headers.py) to rename SDL2 headers to their SDL3 counterparts:
 ```sh
 rename_headers.py source_code_path
 ```
 
+Some macros are renamed and/or removed in SDL3. We have provided a handy Python script [rename_macros.py](https://github.com/libsdl-org/SDL/blob/main/build-scripts/rename_macros.py) to replace these, and also add fixme comments on how to further improve the code:
+```sh
+rename_macros.py source_code_path
+```
+
+
 CMake users should use this snippet to include SDL support in their project:
 ```
 find_package(SDL3 REQUIRED CONFIG REQUIRED COMPONENTS SDL3)
@@ -932,7 +938,49 @@ The following symbols have been renamed:
 
 ## SDL_platform.h
 
-The preprocessor symbol `__MACOSX__` has been renamed `__MACOS__`, and `__IPHONEOS__` has been renamed `__IOS__`
+The following platform preprocessor macros have been removed:
+* __DREAMCAST__
+* __NACL__
+* __PNACL__
+
+The following platform preprocessor macros have been renamed:
+
+| SDL2              | SDL3                      |
+|-------------------|---------------------------|
+| `__3DS__`         | `SDL_PLATFORM_3DS`        |
+| `__AIX__`         | `SDL_PLATFORM_AIX`        |
+| `__ANDROID__`     | `SDL_PLATFORM_ANDROID`    |
+| `__APPLE__`       | `SDL_PLATFORM_APPLE`      |
+| `__BSDI__`        | `SDL_PLATFORM_BSDI`       |
+| `__CYGWIN_`       | `SDL_PLATFORM_CYGWIN`     |
+| `__EMSCRIPTEN__`  | `SDL_PLATFORM_EMSCRIPTEN` |
+| `__FREEBSD__`     | `SDL_PLATFORM_FREEBSD`    |
+| `__GDK__`         | `SDL_PLATFORM_GDK`        |
+| `__HAIKU__`       | `SDL_PLATFORM_HAIKU`      |
+| `__HPUX__`        | `SDL_PLATFORM_HPUX`       |
+| `__IPHONEOS__`    | `SDL_PLATFORM_IOS`        |
+| `__IRIX__`        | `SDL_PLATFORM_IRIX`       |
+| `__LINUX__`       | `SDL_PLATFORM_LINUX`      |
+| `__MACOSX__`      | `SDL_PLATFORM_MACOS`      |
+| `__NETBSD__`      | `SDL_PLATFORM_NETBSD`     |
+| `__NGAGE__`       | `SDL_PLATFORM_NGAGE`      |
+| `__OPENBSD__`     | `SDL_PLATFORM_OPENBSD`    |
+| `__OS2__`         | `SDL_PLATFORM_OS2`        |
+| `__OSF__`         | `SDL_PLATFORM_OSF`        |
+| `__PS2__`         | `SDL_PLATFORM_PS2`        |
+| `__PSP__`         | `SDL_PLATFORM_PSP`        |
+| `__QNXNTO__`      | `SDL_PLATFORM_QNXNTO`     |
+| `__RISCOS__`      | `SDL_PLATFORM_RISCOS`     |
+| `__SOLARIS__`     | `SDL_PLATFORM_SOLARIS`    |
+| `__TVOS__`        | `SDL_PLATFORM_TVOS`       |
+| `__unix__`        | `SDL_PLATFORM_UNI`        |
+| `__VITA__`        | `SDL_PLATFORM_VITA`       |
+| `__WIN32__`       | `SDL_PLATFORM_WINRT`      |
+| `__WINDOWS__`     | `SDL_PLATFORM_WINDOWS`    |
+| `__WINGDK__`      | `SDL_PLATFORM_WINGDK`     |
+| `__WINRT__`       | `SDL_PLATFORM_WINRT`      |
+| `__XBOXONE__`     | `SDL_PLATFORM_XBOXONE`    |
+| `__XBOXSERIES__`  | `SDL_PLATFORM_XBOXSERIES` |
 
 ## SDL_rect.h
 
@@ -1360,7 +1408,7 @@ The information previously available in SDL_GetWindowWMInfo() is now available a
     if (nswindow) {
         ...
     }
-#elif defined(__LINUX__)
+#elif defined(SDL_PLATFORM_LINUX)
     if (SDL_GetWindowWMInfo(window, &info)) {
         if (info.subsystem == SDL_SYSWM_X11) {
             Display *xdisplay = info.info.x11.display;
@@ -1380,17 +1428,17 @@ The information previously available in SDL_GetWindowWMInfo() is now available a
 ```
 becomes:
 ```c
-#if defined(__WIN32__)
+#if defined(SDL_PLATFORM_WIN32)
     HWND hwnd = (HWND)SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROPERTY_WINDOW_WIN32_HWND_POINTER, NULL);
     if (hwnd) {
         ...
     }
-#elif defined(__MACOS__)
+#elif defined(SDL_PLATFORM_MACOS)
     NSWindow *nswindow = (__bridge NSWindow *)SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROPERTY_WINDOW_COCOA_WINDOW_POINTER, NULL);
     if (nswindow) {
         ...
     }
-#elif defined(__LINUX__)
+#elif defined(SDL_PLATFORM_LINUX)
     if (SDL_strcmp(SDL_GetCurrentVideoDriver(), "x11") == 0) {
         Display *xdisplay = (Display *)SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROPERTY_WINDOW_X11_DISPLAY_POINTER, NULL);
         Window xwindow = (Window)SDL_GetNumberProperty(SDL_GetWindowProperties(window), SDL_PROPERTY_WINDOW_X11_WINDOW_NUMBER, 0);

docs/README-winrt.md

@@ -33,7 +33,7 @@ Here is a rough list of what works, and what doesn't:
 * What works:
   * compilation via Visual C++ 2019.
   * compile-time platform detection for SDL programs.  The C/C++ #define,
-    `__WINRT__`, will be set to 1 (by SDL) when compiling for WinRT.
+    `SDL_PLATFORM_WINRT`, will be set to 1 (by SDL) when compiling for WinRT.
   * GPU-accelerated 2D rendering, via SDL_Renderer.
   * OpenGL ES 2, via the ANGLE library (included separately from SDL)
   * software rendering, via either SDL_Surface (optionally in conjunction with

include/SDL3/SDL_assert.h

@@ -66,9 +66,9 @@ assert can have unique static variables associated with it.
     #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "int $3\n\t" )
 #elif (defined(__GNUC__) || defined(__clang__)) && defined(__riscv)
     #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "ebreak\n\t" )
-#elif ( defined(__APPLE__) && (defined(__arm64__) || defined(__aarch64__)) )  /* this might work on other ARM targets, but this is a known quantity... */
+#elif ( defined(SDL_PLATFORM_APPLE) && (defined(__arm64__) || defined(__aarch64__)) )  /* this might work on other ARM targets, but this is a known quantity... */
     #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "brk #22\n\t" )
-#elif defined(__APPLE__) && defined(__arm__)
+#elif defined(SDL_PLATFORM_APPLE) && defined(__arm__)
     #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "bkpt #22\n\t" )
 #elif defined(__386__) && defined(__WATCOMC__)
     #define SDL_TriggerBreakpoint() { _asm { int 0x03 } }
@@ -167,7 +167,7 @@ extern DECLSPEC SDL_AssertState SDLCALL SDL_ReportAssertion(SDL_AssertData *data
 #ifndef SDL_AssertBreakpoint
 #if defined(ANDROID) && defined(assert)
 /* Define this as empty in case assert() is defined as SDL_assert */
-#define SDL_AssertBreakpoint() 
+#define SDL_AssertBreakpoint()
 #else
 #define SDL_AssertBreakpoint() SDL_TriggerBreakpoint()
 #endif

include/SDL3/SDL_atomic.h

@@ -153,7 +153,7 @@ extern DECLSPEC void SDLCALL SDL_UnlockSpinlock(SDL_SpinLock *lock);
 void _ReadWriteBarrier(void);
 #pragma intrinsic(_ReadWriteBarrier)
 #define SDL_CompilerBarrier()   _ReadWriteBarrier()
-#elif (defined(__GNUC__) && !defined(__EMSCRIPTEN__)) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5120))
+#elif (defined(__GNUC__) && !defined(SDL_PLATFORM_EMSCRIPTEN)) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5120))
 /* This is correct for all CPUs when using GCC or Solaris Studio 12.1+. */
 #define SDL_CompilerBarrier()   __asm__ __volatile__ ("" : : : "memory")
 #elif defined(__WATCOMC__)
@@ -199,7 +199,7 @@ extern DECLSPEC void SDLCALL SDL_MemoryBarrierAcquireFunction(void);
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 #define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("dmb ish" : : : "memory")
 #elif defined(__GNUC__) && defined(__arm__)
-#if 0 /* defined(__LINUX__) || defined(__ANDROID__) */
+#if 0 /* defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_ANDROID) */
 /* Information from:
    https://chromium.googlesource.com/chromium/chromium/+/trunk/base/atomicops_internals_arm_gcc.h#19
 
@@ -226,7 +226,7 @@ typedef void (*SDL_KernelMemoryBarrierFunc)();
 #else
 #define SDL_MemoryBarrierRelease()   __asm__ __volatile__ ("" : : : "memory")
 #define SDL_MemoryBarrierAcquire()   __asm__ __volatile__ ("" : : : "memory")
-#endif /* __LINUX__ || __ANDROID__ */
+#endif /* SDL_PLATFORM_LINUX || SDL_PLATFORM_ANDROID */
 #endif /* __GNUC__ && __arm__ */
 #else
 #if (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5120))

include/SDL3/SDL_begin_code.h

@@ -53,7 +53,7 @@
 
 /* Some compilers use a special export keyword */
 #ifndef DECLSPEC
-# if defined(__WIN32__) || defined(__WINRT__) || defined(__CYGWIN__) || defined(__GDK__)
+# if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_CYGWIN) || defined(SDL_PLATFORM_GDK)
 #  ifdef DLL_EXPORT
 #   define DECLSPEC __declspec(dllexport)
 #  else
@@ -70,7 +70,7 @@
 
 /* By default SDL uses the C calling convention */
 #ifndef SDLCALL
-#if (defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__)) && !defined(__GNUC__)
+#if (defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)) && !defined(__GNUC__)
 #define SDLCALL __cdecl
 #else
 #define SDLCALL

include/SDL3/SDL_egl.h

@@ -25,9 +25,11 @@
  *  This is a simple file to encapsulate the EGL API headers.
  */
 
-#if !defined(_MSC_VER) && !defined(__ANDROID__) && !defined(SDL_USE_BUILTIN_OPENGL_DEFINITIONS)
+#include "SDL_platform_defines.h"
 
-#if defined(__vita__) || defined(__psp2__)
+#if !defined(_MSC_VER) && !defined(SDL_PLATFORM_ANDROID) && !defined(SDL_USE_BUILTIN_OPENGL_DEFINITIONS)
+
+#if defined(SDL_PLATFORM_VITA)
 #include <psp2/display.h>
 #include <psp2/gxm.h>
 #include <psp2/types.h>
@@ -419,7 +421,7 @@ typedef HDC     EGLNativeDisplayType;
 typedef HBITMAP EGLNativePixmapType;
 typedef HWND    EGLNativeWindowType;
 
-#elif defined(__EMSCRIPTEN__)
+#elif defined(SDL_PLATFORM_EMSCRIPTEN)
 
 typedef int EGLNativeDisplayType;
 typedef int EGLNativePixmapType;

include/SDL3/SDL_endian.h

@@ -56,13 +56,13 @@ _m_prefetch(void *__P)
 /* @} */
 
 #ifndef SDL_BYTEORDER
-#ifdef __linux__
+#ifdef SDL_PLATFORM_LINUX
 #include <endian.h>
 #define SDL_BYTEORDER  __BYTE_ORDER
-#elif defined(__OpenBSD__) || defined(__DragonFly__)
+#elif defined(SDL_PLATFORM_OPENBSD) || defined(__DragonFly__)
 #include <endian.h>
 #define SDL_BYTEORDER  BYTE_ORDER
-#elif defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(SDL_PLATFORM_FREEBSD) || defined(SDL_PLATFORM_NETBSD)
 #include <sys/endian.h>
 #define SDL_BYTEORDER  BYTE_ORDER
 /* predefs from newer gcc and clang versions: */
@@ -84,7 +84,7 @@ _m_prefetch(void *__P)
 #else
 #define SDL_BYTEORDER   SDL_LIL_ENDIAN
 #endif
-#endif /* __linux__ */
+#endif /* SDL_PLATFORM_LINUX */
 #endif /* !SDL_BYTEORDER */
 
 #ifndef SDL_FLOATWORDORDER

include/SDL3/SDL_intrin.h

@@ -64,7 +64,7 @@ _m_prefetch(void *__P)
 #  ifdef __ARM_NEON
 #    define SDL_NEON_INTRINSICS 1
 #    include <arm_neon.h>
-#  elif defined(__WINDOWS__) || defined(__WINRT__) || defined(__GDK__)
+#  elif defined(SDL_PLATFORM_WINDOWS) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
 /* Visual Studio doesn't define __ARM_ARCH, but _M_ARM (if set, always 7), and _M_ARM64 (if set, always 1). */
 #    ifdef _M_ARM
 #      define SDL_NEON_INTRINSICS 1

include/SDL3/SDL_main.h

@@ -22,6 +22,7 @@
 #ifndef SDL_main_h_
 #define SDL_main_h_
 
+#include <SDL3/SDL_platform_defines.h>
 #include <SDL3/SDL_stdinc.h>
 #include <SDL3/SDL_events.h>
 
@@ -40,7 +41,7 @@
  */
 
 #ifndef SDL_MAIN_HANDLED
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
 /* On Windows SDL provides WinMain(), which parses the command line and passes
    the arguments to your main function.
 
@@ -48,7 +49,7 @@
  */
 #define SDL_MAIN_AVAILABLE
 
-#elif defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WINRT)
 /* On WinRT, SDL provides a main function that initializes CoreApplication,
    creating an instance of IFrameworkView in the process.
 
@@ -62,7 +63,7 @@
 */
 #define SDL_MAIN_NEEDED
 
-#elif defined(__GDK__)
+#elif defined(SDL_PLATFORM_GDK)
 /* On GDK, SDL provides a main function that initializes the game runtime.
 
    If you prefer to write your own WinMain-function instead of having SDL
@@ -72,7 +73,7 @@
 */
 #define SDL_MAIN_NEEDED
 
-#elif defined(__IOS__)
+#elif defined(SDL_PLATFORM_IOS)
 /* On iOS SDL provides a main function that creates an application delegate
    and starts the iOS application run loop.
 
@@ -83,7 +84,7 @@
  */
 #define SDL_MAIN_NEEDED
 
-#elif defined(__ANDROID__)
+#elif defined(SDL_PLATFORM_ANDROID)
 /* On Android SDL provides a Java class in SDLActivity.java that is the
    main activity entry point.
 
@@ -94,7 +95,7 @@
 /* We need to export SDL_main so it can be launched from Java */
 #define SDLMAIN_DECLSPEC    DECLSPEC
 
-#elif defined(__PSP__)
+#elif defined(SDL_PLATFORM_PSP)
 /* On PSP SDL provides a main function that sets the module info,
    activates the GPU and starts the thread required to be able to exit
    the software.
@@ -103,14 +104,14 @@
  */
 #define SDL_MAIN_AVAILABLE
 
-#elif defined(__PS2__)
+#elif defined(SDL_PLATFORM_PS2)
 #define SDL_MAIN_AVAILABLE
 
 #define SDL_PS2_SKIP_IOP_RESET() \
    void reset_IOP(); \
    void reset_IOP() {}
 
-#elif defined(__3DS__)
+#elif defined(SDL_PLATFORM_3DS)
 /*
   On N3DS, SDL provides a main function that sets up the screens
   and storage.
@@ -119,7 +120,7 @@
 */
 #define SDL_MAIN_AVAILABLE
 
-#elif defined(__NGAGE__)
+#elif defined(SDL_PLATFORM_NGAGE)
 
 /*
    TODO: not sure if it should be SDL_MAIN_NEEDED, in SDL2 ngage had a
@@ -422,7 +423,7 @@ extern DECLSPEC int SDLCALL SDL_RunApp(int argc, char* argv[], SDL_main_func mai
 extern DECLSPEC int SDLCALL SDL_EnterAppMainCallbacks(int argc, char* argv[], SDL_AppInit_func appinit, SDL_AppIterate_func appiter, SDL_AppEvent_func appevent, SDL_AppQuit_func appquit);
 
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 
 /**
  * Register a win32 window class for SDL's use.
@@ -467,24 +468,24 @@ extern DECLSPEC int SDLCALL SDL_RegisterApp(const char *name, Uint32 style, void
  */
 extern DECLSPEC void SDLCALL SDL_UnregisterApp(void);
 
-#endif /* defined(__WIN32__) || defined(__GDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) */
 
 
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
 
 /* for compatibility with SDL2's function of this name */
 #define SDL_WinRTRunApp(MAIN_FUNC, RESERVED)  SDL_RunApp(0, NULL, MAIN_FUNC, RESERVED)
 
-#endif /* __WINRT__ */
+#endif /* SDL_PLATFORM_WINRT */
 
-#ifdef __IOS__
+#ifdef SDL_PLATFORM_IOS
 
 /* for compatibility with SDL2's function of this name */
 #define SDL_UIKitRunApp(ARGC, ARGV, MAIN_FUNC)  SDL_RunApp(ARGC, ARGV, MAIN_FUNC, NULL)
 
-#endif /* __IOS__ */
+#endif /* SDL_PLATFORM_IOS */
 
-#ifdef __GDK__
+#ifdef SDL_PLATFORM_GDK
 
 /* for compatibility with SDL2's function of this name */
 #define SDL_GDKRunApp(MAIN_FUNC, RESERVED)  SDL_RunApp(0, NULL, MAIN_FUNC, RESERVED)
@@ -496,7 +497,7 @@ extern DECLSPEC void SDLCALL SDL_UnregisterApp(void);
  */
 extern DECLSPEC void SDLCALL SDL_GDKSuspendComplete(void);
 
-#endif /* __GDK__ */
+#endif /* SDL_PLATFORM_GDK */
 
 #ifdef __cplusplus
 }
@@ -507,13 +508,13 @@ extern DECLSPEC void SDLCALL SDL_GDKSuspendComplete(void);
 #if !defined(SDL_MAIN_HANDLED) && !defined(SDL_MAIN_NOIMPL)
 /* include header-only SDL_main implementations */
 #if defined(SDL_MAIN_USE_CALLBACKS) \
-    || defined(__WIN32__) || defined(__GDK__) || defined(__IOS__) || defined(__TVOS__) \
+    || defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) || defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS) \
-    || defined(__3DS__) || defined(__NGAGE__) || defined(__PS2__) || defined(__PSP__)
+    || defined(SDL_PLATFORM_3DS) || defined(SDL_PLATFORM_NGAGE) || defined(SDL_PLATFORM_PS2) || defined(SDL_PLATFORM_PSP)
 
 /* platforms which main (-equivalent) can be implemented in plain C */
 #include <SDL3/SDL_main_impl.h>
 
-#elif defined(__WINRT__) /* C++ platforms */
+#elif defined(SDL_PLATFORM_WINRT) /* C++ platforms */
 
 #ifdef __cplusplus
 #include <SDL3/SDL_main_impl.h>
@@ -528,7 +529,7 @@ extern DECLSPEC void SDLCALL SDL_GDKSuspendComplete(void);
 #endif /* __GNUC__ */
 #endif /* __cplusplus */
 
-#endif /* C++ platforms like __WINRT__ etc */
+#endif /* C++ platforms like SDL_PLATFORM_WINRT etc */
 
 #endif /* SDL_MAIN_HANDLED */
 

include/SDL3/SDL_main_impl.h

@@ -65,7 +65,7 @@ int SDL_main(int argc, char **argv)
 /* set up the usual SDL_main stuff if we're not using callbacks or if we are but need the normal entry point. */
 #if !defined(SDL_MAIN_USE_CALLBACKS) || defined(SDL_MAIN_CALLBACK_STANDARD)
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 
 /* these defines/typedefs are needed for the WinMain() definition */
 #ifndef WINAPI
@@ -77,7 +77,7 @@ typedef char* LPSTR;
 typedef wchar_t* PWSTR;
 
 /* The VC++ compiler needs main/wmain defined, but not for GDK */
-#if defined(_MSC_VER) && !defined(__GDK__)
+#if defined(_MSC_VER) && !defined(SDL_PLATFORM_GDK)
 
 /* This is where execution begins [console apps] */
 #if defined( UNICODE ) && UNICODE
@@ -97,7 +97,7 @@ int main(int argc, char *argv[])
 }
 #endif /* UNICODE */
 
-#endif /* _MSC_VER && ! __GDK__ */
+#endif /* _MSC_VER && ! SDL_PLATFORM_GDK */
 
 /* This is where execution begins [windowed apps and GDK] */
 
@@ -120,8 +120,8 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
 } /* extern "C" */
 #endif
 
-/* end of __WIN32__ and __GDK__ impls */
+/* end of SDL_PLATFORM_WIN32 and SDL_PLATFORM_GDK impls */
-#elif defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WINRT)
 
 /* WinRT main based on SDL_winrt_main_NonXAML.cpp, placed in the public domain by David Ludwig  3/13/14 */
 
@@ -182,18 +182,18 @@ int CALLBACK WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
 #endif
 
 /* end of WinRT impl */
-#elif defined(__NGAGE__)
+#elif defined(SDL_PLATFORM_NGAGE)
 
 /* same typedef as in ngage SDKs e32def.h */
 typedef signed int TInt;
 /* TODO: if it turns out that this only works when built as C++,
-         move __NGAGE__ into the C++ section in SDL_main.h */
+         move SDL_PLATFORM_NGAGE into the C++ section in SDL_main.h */
 TInt E32Main()
 {
     return SDL_RunApp(0, NULL, SDL_main, NULL);
 }
 
-/* end of __NGAGE__ impl */
+/* end of SDL_PLATFORM_NGAGE impl */
 
 #else /* platforms that use a standard main() and just call SDL_RunApp(), like iOS and 3DS */
 
@@ -204,7 +204,7 @@ int main(int argc, char *argv[])
 
 /* end of impls for standard-conforming platforms */
 
-#endif /* __WIN32__ etc */
+#endif /* SDL_PLATFORM_WIN32 etc */
 
 #endif /* !defined(SDL_MAIN_USE_CALLBACKS) || defined(SDL_MAIN_CALLBACK_STANDARD) */
 

include/SDL3/SDL_oldnames.h

@@ -377,14 +377,6 @@
 #define SDL_PIXELFORMAT_RGB888 SDL_PIXELFORMAT_XRGB8888
 #define SDL_PixelFormatEnumToMasks SDL_GetMasksForPixelFormatEnum
 
-/* ##SDL_platform.h */
-#ifdef __IOS__
-#define __IPHONEOS__ __IOS__
-#endif
-#ifdef __MACOS__
-#define __MACOSX__ __MACOS__
-#endif
-
 /* ##SDL_rect.h */
 #define SDL_EncloseFPoints SDL_GetRectEnclosingPointsFloat
 #define SDL_EnclosePoints SDL_GetRectEnclosingPoints
@@ -853,14 +845,6 @@
 #define SDL_PIXELFORMAT_RGB888 SDL_PIXELFORMAT_RGB888_renamed_SDL_PIXELFORMAT_XRGB8888
 #define SDL_PixelFormatEnumToMasks SDL_PixelFormatEnumToMasks_renamed_SDL_GetMasksForPixelFormatEnum
 
-/* ##SDL_platform.h */
-#ifdef __IOS__
-#define __IPHONEOS__ __IPHONEOS___renamed___IOS__
-#endif
-#ifdef __MACOS__
-#define __MACOSX__ __MACOSX___renamed___MACOS__
-#endif
-
 /* ##SDL_rect.h */
 #define SDL_EncloseFPoints SDL_EncloseFPoints_renamed_SDL_GetRectEnclosingPointsFloat
 #define SDL_EnclosePoints SDL_EnclosePoints_renamed_SDL_GetRectEnclosingPoints

include/SDL3/SDL_opengl.h

@@ -37,7 +37,7 @@
 
 #include <SDL3/SDL_platform.h>
 
-#ifndef __IOS__  /* No OpenGL on iOS. */
+#ifndef SDL_PLATFORM_IOS  /* No OpenGL on iOS. */
 
 /*
  * Mesa 3-D graphics library
@@ -77,11 +77,7 @@
  * Begin system-specific stuff.
  */
 
-#if defined(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__)
+#if defined(_WIN32) && !defined(__CYGWIN__)
-#define __WIN32__
-#endif
-
-#if defined(__WIN32__) && !defined(__CYGWIN__)
 #  if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
 #    define GLAPI __declspec(dllexport)
 #  elif (defined(_MSC_VER) || defined(__MINGW32__)) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
@@ -90,7 +86,7 @@
 #    define GLAPI extern
 #  endif /* _STATIC_MESA support */
 #  if defined(__MINGW32__) && defined(GL_NO_STDCALL) || defined(UNDER_CE)  /* The generated DLLs by MingW with STDCALL are not compatible with the ones done by Microsoft's compilers */
-#    define GLAPIENTRY 
+#    define GLAPIENTRY
 #  else
 #    define GLAPIENTRY __stdcall
 #  endif
@@ -2118,6 +2114,6 @@ typedef void (APIENTRYP PFNGLMULTITEXCOORD4SVARBPROC) (GLenum target, const GLsh
 
 #endif /* __gl_h_ */
 
-#endif /* !__IOS__ */
+#endif /* !SDL_PLATFORM_IOS */
 
 #endif /* SDL_opengl_h_ */

include/SDL3/SDL_opengles.h

@@ -26,7 +26,7 @@
  */
 #include <SDL3/SDL_platform_defines.h>
 
-#ifdef __IOS__
+#ifdef SDL_PLATFORM_IOS
 #include <OpenGLES/ES1/gl.h>
 #include <OpenGLES/ES1/glext.h>
 #else

include/SDL3/SDL_opengles2.h

@@ -28,7 +28,7 @@
 
 #if !defined(_MSC_VER) && !defined(SDL_USE_BUILTIN_OPENGL_DEFINITIONS)
 
-#ifdef __IOS__
+#ifdef SDL_PLATFORM_IOS
 #include <OpenGLES/ES2/gl.h>
 #include <OpenGLES/ES2/glext.h>
 #else

include/SDL3/SDL_platform_defines.h

@@ -29,48 +29,40 @@
 #define SDL_platform_defines_h_
 
 #ifdef _AIX
-#undef __AIX__
+#define SDL_PLATFORM_AIX    1
-#define __AIX__     1
 #endif
 #ifdef __HAIKU__
-#undef __HAIKU__
+#define SDL_PLATFORM_HAIKU   1
-#define __HAIKU__   1
 #endif
 #if defined(bsdi) || defined(__bsdi) || defined(__bsdi__)
-#undef __BSDI__
+#define SDL_PLATFORM_BSDI    1
-#define __BSDI__    1
-#endif
-#ifdef _arch_dreamcast
-#undef __DREAMCAST__
-#define __DREAMCAST__   1
 #endif
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
-#undef __FREEBSD__
+#define SDL_PLATFORM_FREEBSD 1
-#define __FREEBSD__ 1
 #endif
 #if defined(hpux) || defined(__hpux) || defined(__hpux__)
-#undef __HPUX__
+#define SDL_PLATFORM_HPUX    1
-#define __HPUX__    1
 #endif
 #if defined(sgi) || defined(__sgi) || defined(__sgi__) || defined(_SGI_SOURCE)
-#undef __IRIX__
+#define SDL_PLATFORM_IRIX    1
-#define __IRIX__    1
 #endif
 #if (defined(linux) || defined(__linux) || defined(__linux__))
-#undef __LINUX__
+#define SDL_PLATFORM_LINUX   1
-#define __LINUX__   1
 #endif
 #if defined(ANDROID) || defined(__ANDROID__)
-#undef __ANDROID__
+#undef SDL_PLATFORM_LINUX /* do we need to do this? */
-#undef __LINUX__ /* do we need to do this? */
+#define SDL_PLATFORM_ANDROID    1
-#define __ANDROID__ 1
 #endif
 #ifdef __NGAGE__
-#undef __NGAGE__
+#define SDL_PLATFORM_NGAGE 1
-#define __NGAGE__ 1
+#endif
+
+#if defined(__unix__) || defined(__unix) || defined(unix)
+#define SDL_PLATFORM_UNIX   1
 #endif
 
 #ifdef __APPLE__
+#define SDL_PLATFORM_APPLE  1
 /* lets us know what version of macOS we're compiling on */
 #include <AvailabilityMacros.h>
 #include <TargetConditionals.h>
@@ -99,51 +91,48 @@
 #endif
 
 #if TARGET_OS_TV
-#undef __TVOS__
+#define SDL_PLATFORM_TVOS   1
-#define __TVOS__ 1
 #endif
 #if TARGET_OS_IPHONE
-#undef __IOS__
+#define SDL_PLATFORM_IOS    1
-#define __IOS__ 1
 #else
-#undef __MACOS__
+#define SDL_PLATFORM_MACOS  1
-#define __MACOS__  1
 #if MAC_OS_X_VERSION_MIN_REQUIRED < 1070
 # error SDL for macOS only supports deploying on 10.7 and above.
 #endif /* MAC_OS_X_VERSION_MIN_REQUIRED < 1070 */
 #endif /* TARGET_OS_IPHONE */
-#endif /* defined(__APPLE__) */
+#endif /* defined(SDL_PLATFORM_APPLE) */
 
+#ifdef __EMSCRIPTEN__
+#define SDL_PLATFORM_EMSCRIPTEN 1
+#endif
 #ifdef __NetBSD__
-#undef __NETBSD__
+#define SDL_PLATFORM_NETBSD 1
-#define __NETBSD__  1
 #endif
 #ifdef __OpenBSD__
-#undef __OPENBSD__
+#define SDL_PLATFORM_OPENBSD    1
-#define __OPENBSD__ 1
 #endif
 #if defined(__OS2__) || defined(__EMX__)
-#undef __OS2__
+#define SDL_PLATFORM_OS2    1
-#define __OS2__     1
 #endif
 #if defined(osf) || defined(__osf) || defined(__osf__) || defined(_OSF_SOURCE)
-#undef __OSF__
+#define SDL_PLATFORM_OSF    1
-#define __OSF__     1
 #endif
 #ifdef __QNXNTO__
-#undef __QNXNTO__
+#define SDL_PLATFORM_QNXNTO 1
-#define __QNXNTO__  1
 #endif
 #if defined(riscos) || defined(__riscos) || defined(__riscos__)
-#undef __RISCOS__
+#define SDL_PLATFORM_RISCOS 1
-#define __RISCOS__  1
 #endif
 #if defined(__sun) && defined(__SVR4)
-#undef __SOLARIS__
+#define SDL_PLATFORM_SOLARIS    1
-#define __SOLARIS__ 1
 #endif
 
-#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
+#if defined(__CYGWIN__)
+#define SDL_PLATFORM_CYGWIN 1
+#endif
+
+#if defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN) || defined(__MINGW32__)
 /* Try to find out if we're compiling for WinRT, GDK or non-WinRT/GDK */
 #if defined(_MSC_VER) && defined(__has_include)
 #if __has_include(<winapifamily.h>)
@@ -173,47 +162,39 @@
 #endif
 
 #if WINAPI_FAMILY_WINRT
-#undef __WINRT__
+#define SDL_PLATFORM_WINRT   1
-#define __WINRT__ 1
 #elif defined(_GAMING_DESKTOP) /* GDK project configuration always defines _GAMING_XXX */
-#undef __WINGDK__
+#define SDL_PLATFORM_WINGDK 1
-#define __WINGDK__ 1
 #elif defined(_GAMING_XBOX_XBOXONE)
-#undef __XBOXONE__
+#define SDL_PLATFORM_XBOXONE    1
-#define __XBOXONE__ 1
 #elif defined(_GAMING_XBOX_SCARLETT)
-#undef __XBOXSERIES__
+#define SDL_PLATFORM_XBOXSERIES 1
-#define __XBOXSERIES__ 1
 #else
-#undef __WINDOWS__
+#define SDL_PLATFORM_WINDOWS    1
-#define __WINDOWS__ 1
 #endif
-#endif /* defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) */
+#endif /* defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN) */
 
-#ifdef __WINDOWS__
+#ifdef SDL_PLATFORM_WINDOWS
-#undef __WIN32__
+#define SDL_PLATFORM_WIN32  1
-#define __WIN32__ 1
 #endif
 /* This is to support generic "any GDK" separate from a platform-specific GDK */
-#if defined(__WINGDK__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_WINGDK) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
-#undef __GDK__
+#define SDL_PLATFORM_GDK    1
-#define __GDK__ 1
 #endif
 #ifdef __PSP__
-#undef __PSP__
+#define SDL_PLATFORM_PSP    1
-#define __PSP__ 1
 #endif
-#ifdef PS2
+#if defined(__PS2__) || defined(PS2)
-#define __PS2__ 1
+#define SDL_PLATFORM_PS2    1
 #endif
 
-#ifdef __vita__
+#if defined(__vita__) || defined(__psp2__)
-#define __VITA__ 1
+#define SDL_PLATFORM_VITA   1
 #endif
 
 #ifdef __3DS__
 #undef __3DS__
-#define __3DS__ 1
+#define SDL_PLATFORM_3DS    1
 #endif
 
 #endif /* SDL_platform_defines_h_ */

include/SDL3/SDL_rwops.h

@@ -103,13 +103,13 @@ typedef struct SDL_RWops
     SDL_PropertiesID props;
     union
     {
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
         struct
         {
             void *asset;
         } androidio;
 
-#elif defined(__WIN32__) || defined(__GDK__) || defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) || defined(SDL_PLATFORM_WINRT)
         struct
         {
             SDL_bool append;

include/SDL3/SDL_stdinc.h

@@ -42,7 +42,7 @@
 # ifndef alloca
 #  ifdef HAVE_ALLOCA_H
 #   include <alloca.h>
-#  elif defined(__NETBSD__)
+#  elif defined(SDL_PLATFORM_NETBSD)
 #   if defined(__STRICT_ANSI__)
 #    define SDL_DISABLE_ALLOCA
 #   else
@@ -59,7 +59,7 @@
 #   include <malloc.h>
 #  elif defined(__DMC__)
 #   include <stdlib.h>
-#  elif defined(__AIX__)
+#  elif defined(SDL_PLATFORM_AIX)
 # pragma alloca
 #  elif defined(__MRC__)
 void *alloca(unsigned);
@@ -207,9 +207,9 @@ typedef uint64_t Uint64;
 #ifndef SDL_PRIs64
 #ifdef PRIs64
 #define SDL_PRIs64 PRIs64
-#elif defined(__WIN32__) || defined(__GDK__)
+#elif defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #define SDL_PRIs64 "I64d"
-#elif defined(__LP64__) && !defined(__APPLE__)
+#elif defined(__LP64__) && !defined(SDL_PLATFORM_APPLE)
 #define SDL_PRIs64 "ld"
 #else
 #define SDL_PRIs64 "lld"
@@ -218,9 +218,9 @@ typedef uint64_t Uint64;
 #ifndef SDL_PRIu64
 #ifdef PRIu64
 #define SDL_PRIu64 PRIu64
-#elif defined(__WIN32__) || defined(__GDK__)
+#elif defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #define SDL_PRIu64 "I64u"
-#elif defined(__LP64__) && !defined(__APPLE__)
+#elif defined(__LP64__) && !defined(SDL_PLATFORM_APPLE)
 #define SDL_PRIu64 "lu"
 #else
 #define SDL_PRIu64 "llu"
@@ -229,9 +229,9 @@ typedef uint64_t Uint64;
 #ifndef SDL_PRIx64
 #ifdef PRIx64
 #define SDL_PRIx64 PRIx64
-#elif defined(__WIN32__) || defined(__GDK__)
+#elif defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #define SDL_PRIx64 "I64x"
-#elif defined(__LP64__) && !defined(__APPLE__)
+#elif defined(__LP64__) && !defined(SDL_PLATFORM_APPLE)
 #define SDL_PRIx64 "lx"
 #else
 #define SDL_PRIx64 "llx"
@@ -240,9 +240,9 @@ typedef uint64_t Uint64;
 #ifndef SDL_PRIX64
 #ifdef PRIX64
 #define SDL_PRIX64 PRIX64
-#elif defined(__WIN32__) || defined(__GDK__)
+#elif defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #define SDL_PRIX64 "I64X"
-#elif defined(__LP64__) && !defined(__APPLE__)
+#elif defined(__LP64__) && !defined(SDL_PLATFORM_APPLE)
 #define SDL_PRIX64 "lX"
 #else
 #define SDL_PRIX64 "llX"
@@ -370,7 +370,7 @@ SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
 
 /** \cond */
 #ifndef DOXYGEN_SHOULD_IGNORE_THIS
-#if !defined(__ANDROID__) && !defined(__VITA__) && !defined(__3DS__)
+#if !defined(SDL_PLATFORM_ANDROID) && !defined(SDL_PLATFORM_VITA) && !defined(SDL_PLATFORM_3DS)
    /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
 typedef enum
 {

include/SDL3/SDL_system.h

@@ -43,7 +43,7 @@ extern "C" {
 /*
  * Platform specific functions for Windows
  */
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 
 typedef struct tagMSG MSG;
 typedef SDL_bool (SDLCALL *SDL_WindowsMessageHook)(void *userdata, MSG *msg);
@@ -62,9 +62,9 @@ typedef SDL_bool (SDLCALL *SDL_WindowsMessageHook)(void *userdata, MSG *msg);
  */
 extern DECLSPEC void SDLCALL SDL_SetWindowsMessageHook(SDL_WindowsMessageHook callback, void *userdata);
 
-#endif /* defined(__WIN32__) || defined(__GDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) */
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 
 /**
  * Get the D3D9 adapter index that matches the specified display.
@@ -80,9 +80,9 @@ extern DECLSPEC void SDLCALL SDL_SetWindowsMessageHook(SDL_WindowsMessageHook ca
  */
 extern DECLSPEC int SDLCALL SDL_Direct3D9GetAdapterIndex(SDL_DisplayID displayID);
 
-#endif /* defined(__WIN32__) || defined(__WINGDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK) */
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 
 /**
  * Get the DXGI Adapter and Output indices for the specified display.
@@ -101,7 +101,7 @@ extern DECLSPEC int SDLCALL SDL_Direct3D9GetAdapterIndex(SDL_DisplayID displayID
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_DXGIGetOutputInfo(SDL_DisplayID displayID, int *adapterIndex, int *outputIndex);
 
-#endif /* defined(__WIN32__) || defined(__WINGDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK) */
 
 /*
  * Platform specific functions for UNIX
@@ -127,7 +127,7 @@ extern DECLSPEC void SDLCALL SDL_SetX11EventHook(SDL_X11EventHook callback, void
 /*
  * Platform specific functions for Linux
  */
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
 
 /**
  * Sets the UNIX nice value for a thread.
@@ -158,12 +158,12 @@ extern DECLSPEC int SDLCALL SDL_LinuxSetThreadPriority(Sint64 threadID, int prio
  */
 extern DECLSPEC int SDLCALL SDL_LinuxSetThreadPriorityAndPolicy(Sint64 threadID, int sdlPriority, int schedPolicy);
 
-#endif /* __LINUX__ */
+#endif /* SDL_PLATFORM_LINUX */
 
 /*
  * Platform specific functions for iOS
  */
-#ifdef __IOS__
+#ifdef SDL_PLATFORM_IOS
 
 #define SDL_iOSSetAnimationCallback(window, interval, callback, callbackParam) SDL_iPhoneSetAnimationCallback(window, interval, callback, callbackParam)
 
@@ -219,13 +219,13 @@ extern DECLSPEC int SDLCALL SDL_iPhoneSetAnimationCallback(SDL_Window * window,
  */
 extern DECLSPEC void SDLCALL SDL_iPhoneSetEventPump(SDL_bool enabled);
 
-#endif /* __IOS__ */
+#endif /* SDL_PLATFORM_IOS */
 
 
 /*
  * Platform specific functions for Android
  */
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 
 /**
  * Get the Android Java Native Interface Environment of the current thread.
@@ -451,12 +451,12 @@ extern DECLSPEC int SDLCALL SDL_AndroidShowToast(const char* message, int durati
  */
 extern DECLSPEC int SDLCALL SDL_AndroidSendMessage(Uint32 command, int param);
 
-#endif /* __ANDROID__ */
+#endif /* SDL_PLATFORM_ANDROID */
 
 /*
  * Platform specific functions for WinRT
  */
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
 
 /**
  *  WinRT / Windows Phone path types
@@ -556,7 +556,7 @@ extern DECLSPEC const char * SDLCALL SDL_WinRTGetFSPathUTF8(SDL_WinRT_Path pathT
  */
 extern DECLSPEC SDL_WinRT_DeviceFamily SDLCALL SDL_WinRTGetDeviceFamily();
 
-#endif /* __WINRT__ */
+#endif /* SDL_PLATFORM_WINRT */
 
 /**
  * Query if the current device is a tablet.
@@ -610,7 +610,7 @@ extern DECLSPEC void SDLCALL SDL_OnApplicationWillEnterForeground(void);
  */
 extern DECLSPEC void SDLCALL SDL_OnApplicationDidBecomeActive(void);
 
-#ifdef __IOS__
+#ifdef SDL_PLATFORM_IOS
 /*
  * \since This function is available since SDL 3.0.0.
  */
@@ -620,7 +620,7 @@ extern DECLSPEC void SDLCALL SDL_OnApplicationDidChangeStatusBarOrientation(void
 /*
  * Functions used only by GDK
  */
-#ifdef __GDK__
+#ifdef SDL_PLATFORM_GDK
 typedef struct XTaskQueueObject *XTaskQueueHandle;
 typedef struct XUser *XUserHandle;
 

include/SDL3/SDL_test_common.h

@@ -34,10 +34,10 @@
 
 #include <SDL3/SDL.h>
 
-#ifdef __PSP__
+#ifdef SDL_PLATFORM_PSP
 #define DEFAULT_WINDOW_WIDTH  480
 #define DEFAULT_WINDOW_HEIGHT 272
-#elif defined(__VITA__)
+#elif defined(SDL_PLATFORM_VITA)
 #define DEFAULT_WINDOW_WIDTH  960
 #define DEFAULT_WINDOW_HEIGHT 544
 #else

include/SDL3/SDL_thread.h

@@ -35,7 +35,7 @@
 #include <SDL3/SDL_atomic.h>
 #include <SDL3/SDL_mutex.h>
 
-#if (defined(__WIN32__) || defined(__GDK__)) && !defined(__WINRT__)
+#if (defined(SDL_PLATFORM_WIN32) || defined(__GDK__)) && !defined(SDL_PLATFORM_WINRT)
 #include <process.h> /* _beginthreadex() and _endthreadex() */
 #endif
 
@@ -81,7 +81,7 @@ typedef enum {
 typedef int (SDLCALL * SDL_ThreadFunction) (void *data);
 
 
-#if (defined(__WIN32__) || defined(__GDK__)) && !defined(__WINRT__)
+#if (defined(SDL_PLATFORM_WIN32) || defined(__GDK__)) && !defined(__WINRT__)
 /**
  *  \file SDL_thread.h
  *

include/build_config/SDL_build_config.h

@@ -31,23 +31,23 @@
  */
 
 /* Add any platform that doesn't build using the configure system. */
-#if defined(__WIN32__)
+#if defined(SDL_PLATFORM_WIN32)
 #include "SDL_build_config_windows.h"
-#elif defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WINRT)
 #include "SDL_build_config_winrt.h"
-#elif defined(__WINGDK__)
+#elif defined(SDL_PLATFORM_WINGDK)
 #include "SDL_build_config_wingdk.h"
-#elif defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#elif defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
 #include "SDL_build_config_xbox.h"
-#elif defined(__MACOS__)
+#elif defined(SDL_PLATFORM_MACOS)
 #include "SDL_build_config_macos.h"
-#elif defined(__IOS__)
+#elif defined(SDL_PLATFORM_IOS)
 #include "SDL_build_config_ios.h"
-#elif defined(__ANDROID__)
+#elif defined(SDL_PLATFORM_ANDROID)
 #include "SDL_build_config_android.h"
-#elif defined(__EMSCRIPTEN__)
+#elif defined(SDL_PLATFORM_EMSCRIPTEN)
 #include "SDL_build_config_emscripten.h"
-#elif defined(__NGAGE__)
+#elif defined(SDL_PLATFORM_NGAGE)
 #include "SDL_build_config_ngage.h"
 #else
 /* This is a minimal configuration just to get SDL running on new platforms. */

include/build_config/SDL_build_config.h.cmake

@@ -76,7 +76,7 @@
 #cmakedefine HAVE_CALLOC 1
 #cmakedefine HAVE_REALLOC 1
 #cmakedefine HAVE_FREE 1
-#ifndef __WIN32__ /* Don't use C runtime versions of these on Windows */
+#ifndef SDL_PLATFORM_WIN32 /* Don't use C runtime versions of these on Windows */
 #cmakedefine HAVE_GETENV 1
 #cmakedefine HAVE_SETENV 1
 #cmakedefine HAVE_PUTENV 1

include/build_config/SDL_build_config_ios.h

@@ -148,7 +148,7 @@
 #define SDL_JOYSTICK_MFI 1
 #define SDL_JOYSTICK_VIRTUAL    1
 
-#ifdef __TVOS__
+#ifdef SDL_PLATFORM_TVOS
 #define SDL_SENSOR_DUMMY    1
 #else
 /* Enable the CoreMotion sensor driver */

include/build_config/SDL_build_config_windows.h

@@ -236,7 +236,7 @@ typedef unsigned int uintptr_t;
 /* Enable various input drivers */
 #define SDL_JOYSTICK_DINPUT 1
 #define SDL_JOYSTICK_HIDAPI 1
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 #define SDL_JOYSTICK_RAWINPUT   1
 #endif
 #define SDL_JOYSTICK_VIRTUAL    1

src/SDL.c

@@ -21,16 +21,16 @@
 #include "SDL_internal.h"
 #include "SDL3/SDL_revision.h"
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #include "core/windows/SDL_windows.h"
-#elif !defined(__WINRT__)
+#elif !defined(SDL_PLATFORM_WINRT)
 #include <unistd.h> /* _exit(), etc. */
 #endif
 
 /* this checks for HAVE_DBUS_DBUS_H internally. */
 #include "core/linux/SDL_dbus.h"
 
-#ifdef __EMSCRIPTEN__
+#ifdef SDL_PLATFORM_EMSCRIPTEN
 #include <emscripten.h>
 #endif
 
@@ -83,7 +83,7 @@ SDL_COMPILE_TIME_ASSERT(SDL_PATCHLEVEL_max, SDL_PATCHLEVEL <= 99);
 extern SDL_NORETURN void SDL_ExitProcess(int exitcode);
 SDL_NORETURN void SDL_ExitProcess(int exitcode)
 {
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
     /* "if you do not know the state of all threads in your process, it is
        better to call TerminateProcess than ExitProcess"
        https://msdn.microsoft.com/en-us/library/windows/desktop/ms682658(v=vs.85).aspx */
@@ -91,11 +91,11 @@ SDL_NORETURN void SDL_ExitProcess(int exitcode)
     /* MingW doesn't have TerminateProcess marked as noreturn, so add an
        ExitProcess here that will never be reached but make MingW happy. */
     ExitProcess(exitcode);
-#elif defined(__EMSCRIPTEN__)
+#elif defined(SDL_PLATFORM_EMSCRIPTEN)
     emscripten_cancel_main_loop();   /* this should "kill" the app. */
     emscripten_force_exit(exitcode); /* this should "kill" the app. */
     exit(exitcode);
-#elif defined(__HAIKU__)  /* Haiku has _Exit, but it's not marked noreturn. */
+#elif defined(SDL_PLATFORM_HAIKU)  /* Haiku has _Exit, but it's not marked noreturn. */
     _exit(exitcode);
 #elif defined(HAVE__EXIT) /* Upper case _Exit() */
     _Exit(exitcode);
@@ -567,69 +567,65 @@ const char *SDL_GetRevision(void)
 /* Get the name of the platform */
 const char *SDL_GetPlatform(void)
 {
-#ifdef __AIX__
+#if defined(SDL_PLATFORM_AIX)
     return "AIX";
-#elif defined(__ANDROID__)
+#elif defined(SDL_PLATFORM_ANDROID)
     return "Android";
-#elif defined(__BSDI__)
+#elif defined(SDL_PLATFORM_BSDI)
     return "BSDI";
-#elif defined(__DREAMCAST__)
+#elif defined(SDL_PLATFORM_EMSCRIPTEN)
-    return "Dreamcast";
-#elif defined(__EMSCRIPTEN__)
     return "Emscripten";
-#elif defined(__FREEBSD__)
+#elif defined(SDL_PLATFORM_FREEBSD)
     return "FreeBSD";
-#elif defined(__HAIKU__)
+#elif defined(SDL_PLATFORM_HAIKU)
     return "Haiku";
-#elif defined(__HPUX__)
+#elif defined(SDL_PLATFORM_HPUX)
     return "HP-UX";
-#elif defined(__IRIX__)
+#elif defined(SDL_PLATFORM_IRIX)
     return "Irix";
-#elif defined(__LINUX__)
+#elif defined(SDL_PLATFORM_LINUX)
     return "Linux";
 #elif defined(__MINT__)
     return "Atari MiNT";
-#elif defined(__MACOS__)
+#elif defined(SDL_PLATFORM_MACOS)
     return "macOS";
-#elif defined(__NACL__)
+#elif defined(SDL_PLATFORM_NETBSD)
-    return "NaCl";
-#elif defined(__NETBSD__)
     return "NetBSD";
-#elif defined(__OPENBSD__)
+#elif defined(SDL_PLATFORM_OPENBSD)
     return "OpenBSD";
-#elif defined(__OS2__)
+#elif defined(SDL_PLATFORM_OS2)
     return "OS/2";
-#elif defined(__OSF__)
+#elif defined(SDL_PLATFORM_OSF)
     return "OSF/1";
-#elif defined(__QNXNTO__)
+#elif defined(SDL_PLATFORM_QNXNTO)
     return "QNX Neutrino";
-#elif defined(__RISCOS__)
+#elif defined(SDL_PLATFORM_RISCOS)
     return "RISC OS";
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return "Solaris";
-#elif defined(__WIN32__)
+#elif defined(SDL_PLATFORM_WIN32)
     return "Windows";
-#elif defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WINRT)
     return "WinRT";
-#elif defined(__WINGDK__)
+#elif defined(SDL_PLATFORM_WINGDK)
     return "WinGDK";
-#elif defined(__XBOXONE__)
+#elif defined(SDL_PLATFORM_XBOXONE)
     return "Xbox One";
-#elif defined(__XBOXSERIES__)
+#elif defined(SDL_PLATFORM_XBOXSERIES)
     return "Xbox Series X|S";
-#elif defined(__IOS__)
+#elif defined(SDL_PLATFORM_IOS)
     return "iOS";
-#elif defined(__TVOS__)
+#elif defined(SDL_PLATFORM_TVOS)
     return "tvOS";
-#elif defined(__PS2__)
+#elif defined(SDL_PLATFORM_PS2)
     return "PlayStation 2";
-#elif defined(__PSP__)
+#elif defined(SDL_PLATFORM_PSP)
     return "PlayStation Portable";
-#elif defined(__VITA__)
+#elif defined(SDL_PLATFORM_VITA)
     return "PlayStation Vita";
-#elif defined(__NGAGE__)
+#elif defined(SDL_PLATFORM_NGAGE)
     return "Nokia N-Gage";
-#elif defined(__3DS__)
+#elif defined(SDL_PLATFORM_3DS)
     return "Nintendo 3DS";
 #elif defined(__managarm__)
     return "Managarm";
@@ -640,10 +636,10 @@ const char *SDL_GetPlatform(void)
 
 SDL_bool SDL_IsTablet(void)
 {
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
     extern SDL_bool SDL_IsAndroidTablet(void);
     return SDL_IsAndroidTablet();
-#elif defined(__IOS__)
+#elif defined(SDL_PLATFORM_IOS)
     extern SDL_bool SDL_IsIPad(void);
     return SDL_IsIPad();
 #else
@@ -651,7 +647,7 @@ SDL_bool SDL_IsTablet(void)
 #endif
 }
 
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
 
 #if (!defined(HAVE_LIBC) || defined(__WATCOMC__)) && !defined(SDL_STATIC_LIB)
 /* FIXME: Still need to include DllMain() on Watcom C ? */
@@ -669,4 +665,4 @@ BOOL APIENTRY MINGW32_FORCEALIGN _DllMainCRTStartup(HANDLE hModule, DWORD ul_rea
 }
 #endif /* Building DLL */
 
-#endif /* defined(__WIN32__) || defined(__GDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) */

src/SDL_assert.c

@@ -20,20 +20,20 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #include "core/windows/SDL_windows.h"
 #endif
 
 #include "SDL_assert_c.h"
 #include "video/SDL_sysvideo.h"
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #ifndef WS_OVERLAPPEDWINDOW
 #define WS_OVERLAPPEDWINDOW 0
 #endif
 #endif
 
-#ifdef __EMSCRIPTEN__
+#ifdef SDL_PLATFORM_EMSCRIPTEN
     #include <emscripten.h>
     /* older Emscriptens don't have this, but we need to for wasm64 compatibility. */
     #ifndef MAIN_THREAD_EM_ASM_PTR
@@ -86,7 +86,7 @@ static void SDL_AddAssertionToReport(SDL_AssertData *data)
     }
 }
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #define ENDLINE "\r\n"
 #else
 #define ENDLINE "\n"
@@ -246,7 +246,7 @@ static SDL_AssertState SDLCALL SDL_PromptAssertion(const SDL_AssertData *data, v
             state = (SDL_AssertState)selected;
         }
     } else {
-#ifdef __EMSCRIPTEN__
+#ifdef SDL_PLATFORM_EMSCRIPTEN
         /* This is nasty, but we can't block on a custom UI. */
         for (;;) {
             SDL_bool okay = SDL_TRUE;

src/SDL_internal.h

@@ -74,7 +74,7 @@
 #define DECLSPEC
 #endif
 
-#ifdef __APPLE__
+#ifdef SDL_PLATFORM_APPLE
 #ifndef _DARWIN_C_SOURCE
 #define _DARWIN_C_SOURCE 1 /* for memset_pattern4() */
 #endif

src/SDL_log.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
 #include "core/windows/SDL_windows.h"
 #endif
 
@@ -32,7 +32,7 @@
 #include <stdio.h>
 #endif
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 #include <android/log.h>
 #endif
 
@@ -84,7 +84,7 @@ static const char *SDL_priority_prefixes[SDL_NUM_LOG_PRIORITIES] = {
 #pragma GCC diagnostic pop
 #endif
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 static const char *SDL_category_prefixes[] = {
     "APP",
     "ERROR",
@@ -108,7 +108,7 @@ static int SDL_android_priority[SDL_NUM_LOG_PRIORITIES] = {
     ANDROID_LOG_ERROR,
     ANDROID_LOG_FATAL
 };
-#endif /* __ANDROID__ */
+#endif /* SDL_PLATFORM_ANDROID */
 
 void SDL_InitLog(void)
 {
@@ -269,7 +269,7 @@ void SDL_LogMessage(int category, SDL_LogPriority priority, SDL_PRINTF_FORMAT_ST
     va_end(ap);
 }
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 static const char *GetCategoryPrefix(int category)
 {
     if (category < SDL_LOG_CATEGORY_RESERVED1) {
@@ -280,7 +280,7 @@ static const char *GetCategoryPrefix(int category)
     }
     return "CUSTOM";
 }
-#endif /* __ANDROID__ */
+#endif /* SDL_PLATFORM_ANDROID */
 
 void SDL_LogMessageV(int category, SDL_LogPriority priority, SDL_PRINTF_FORMAT_STRING const char *fmt, va_list ap)
 {
@@ -351,7 +351,7 @@ void SDL_LogMessageV(int category, SDL_LogPriority priority, SDL_PRINTF_FORMAT_S
     }
 }
 
-#if defined(__WIN32__) && !defined(HAVE_STDIO_H) && !defined(__WINRT__) && !defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) && !defined(HAVE_STDIO_H) && !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_GDK)
 /* Flag tracking the attachment of the console: 0=unattached, 1=attached to a console, 2=attached to a file, -1=error */
 static int consoleAttached = 0;
 
@@ -362,7 +362,7 @@ static HANDLE stderrHandle = NULL;
 static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority priority,
                                   const char *message)
 {
-#if defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
     /* Way too many allocations here, urgh */
     /* Note: One can't call SDL_SetError here, since that function itself logs. */
     {
@@ -371,7 +371,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
         LPTSTR tstr;
         SDL_bool isstack;
 
-#if !defined(HAVE_STDIO_H) && !defined(__WINRT__) && !defined(__GDK__)
+#if !defined(HAVE_STDIO_H) && !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_GDK)
         BOOL attachResult;
         DWORD attachError;
         DWORD charsWritten;
@@ -410,7 +410,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
                 }
             }
         }
-#endif /* !defined(HAVE_STDIO_H) && !defined(__WINRT__) && !defined(__GDK__) */
+#endif /* !defined(HAVE_STDIO_H) && !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_GDK) */
 
         length = SDL_strlen(SDL_priority_prefixes[priority]) + 2 + SDL_strlen(message) + 1 + 1 + 1;
         output = SDL_small_alloc(char, length, &isstack);
@@ -420,7 +420,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
         /* Output to debugger */
         OutputDebugString(tstr);
 
-#if !defined(HAVE_STDIO_H) && !defined(__WINRT__) && !defined(__GDK__)
+#if !defined(HAVE_STDIO_H) && !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_GDK)
         /* Screen output to stderr, if console was attached. */
         if (consoleAttached == 1) {
             if (!WriteConsole(stderrHandle, tstr, (DWORD)SDL_tcslen(tstr), &charsWritten, NULL)) {
@@ -435,19 +435,19 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
                 OutputDebugString(TEXT("Error calling WriteFile\r\n"));
             }
         }
-#endif /* !defined(HAVE_STDIO_H) && !defined(__WINRT__) && !defined(__GDK__) */
+#endif /* !defined(HAVE_STDIO_H) && !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_GDK) */
 
         SDL_free(tstr);
         SDL_small_free(output, isstack);
     }
-#elif defined(__ANDROID__)
+#elif defined(SDL_PLATFORM_ANDROID)
     {
         char tag[32];
 
         SDL_snprintf(tag, SDL_arraysize(tag), "SDL/%s", GetCategoryPrefix(category));
         __android_log_write(SDL_android_priority[priority], tag, message);
     }
-#elif defined(__APPLE__) && (defined(SDL_VIDEO_DRIVER_COCOA) || defined(SDL_VIDEO_DRIVER_UIKIT))
+#elif defined(SDL_PLATFORM_APPLE) && (defined(SDL_VIDEO_DRIVER_COCOA) || defined(SDL_VIDEO_DRIVER_UIKIT))
     /* Technically we don't need Cocoa/UIKit, but that's where this function is defined for now.
      */
     extern void SDL_NSLog(const char *prefix, const char *text);
@@ -455,7 +455,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
         SDL_NSLog(SDL_priority_prefixes[priority], message);
         return;
     }
-#elif defined(__PSP__) || defined(__PS2__)
+#elif defined(SDL_PLATFORM_PSP) || defined(SDL_PLATFORM_PS2)
     {
         FILE *pFile;
         pFile = fopen("SDL_Log.txt", "a");
@@ -464,7 +464,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
             (void)fclose(pFile);
         }
     }
-#elif defined(__VITA__)
+#elif defined(SDL_PLATFORM_VITA)
     {
         FILE *pFile;
         pFile = fopen("ux0:/data/SDL_Log.txt", "a");
@@ -473,7 +473,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
             (void)fclose(pFile);
         }
     }
-#elif defined(__3DS__)
+#elif defined(SDL_PLATFORM_3DS)
     {
         FILE *pFile;
         pFile = fopen("sdmc:/3ds/SDL_Log.txt", "a");
@@ -484,7 +484,7 @@ static void SDLCALL SDL_LogOutput(void *userdata, int category, SDL_LogPriority
     }
 #endif
 #if defined(HAVE_STDIO_H) && \
-    !(defined(__APPLE__) && (defined(SDL_VIDEO_DRIVER_COCOA) || defined(SDL_VIDEO_DRIVER_UIKIT)))
+    !(defined(SDL_PLATFORM_APPLE) && (defined(SDL_VIDEO_DRIVER_COCOA) || defined(SDL_VIDEO_DRIVER_UIKIT)))
     (void)fprintf(stderr, "%s: %s\n", SDL_priority_prefixes[priority], message);
 #endif
 }

src/atomic/SDL_atomic.c

@@ -25,11 +25,11 @@
 #define HAVE_MSC_ATOMICS 1
 #endif
 
-#ifdef __MACOS__ /* !!! FIXME: should we favor gcc atomics? */
+#ifdef SDL_PLATFORM_MACOS /* !!! FIXME: should we favor gcc atomics? */
 #include <libkern/OSAtomic.h>
 #endif
 
-#if !defined(HAVE_GCC_ATOMICS) && defined(__SOLARIS__)
+#if !defined(HAVE_GCC_ATOMICS) && defined(SDL_PLATFORM_SOLARIS)
 #include <atomic.h>
 #endif
 
@@ -38,7 +38,7 @@
 #if __has_builtin(__atomic_load_n) || defined(HAVE_GCC_ATOMICS)
 /* !!! FIXME: this advertises as available in the NDK but uses an external symbol we don't have.
    It might be in a later NDK or we might need an extra library? --ryan. */
-#ifndef __ANDROID__
+#ifndef SDL_PLATFORM_ANDROID
 #define HAVE_ATOMIC_LOAD_N 1
 #endif
 #endif
@@ -100,7 +100,7 @@ extern __inline int _SDL_xadd_watcom(volatile int *a, int v);
   Contributed by Bob Pendleton, bob@pendleton.com
 */
 
-#if !defined(HAVE_MSC_ATOMICS) && !defined(HAVE_GCC_ATOMICS) && !defined(__MACOS__) && !defined(__SOLARIS__) && !defined(HAVE_WATCOM_ATOMICS)
+#if !defined(HAVE_MSC_ATOMICS) && !defined(HAVE_GCC_ATOMICS) && !defined(SDL_PLATFORM_MACOS) && !defined(SDL_PLATFORM_SOLARIS) && !defined(HAVE_WATCOM_ATOMICS)
 #define EMULATE_CAS 1
 #endif
 
@@ -131,9 +131,9 @@ SDL_bool SDL_AtomicCompareAndSwap(SDL_AtomicInt *a, int oldval, int newval)
     return _SDL_cmpxchg_watcom(&a->value, newval, oldval);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_bool_compare_and_swap(&a->value, oldval, newval);
-#elif defined(__MACOS__) /* this is deprecated in 10.12 sdk; favor gcc atomics. */
+#elif defined(SDL_PLATFORM_MACOS) /* this is deprecated in 10.12 sdk; favor gcc atomics. */
     return OSAtomicCompareAndSwap32Barrier(oldval, newval, &a->value);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return ((int)atomic_cas_uint((volatile uint_t *)&a->value, (uint_t)oldval, (uint_t)newval) == oldval);
 #elif defined(EMULATE_CAS)
     SDL_bool retval = SDL_FALSE;
@@ -159,11 +159,11 @@ SDL_bool SDL_AtomicCompareAndSwapPointer(void **a, void *oldval, void *newval)
     return _SDL_cmpxchg_watcom((int *)a, (long)newval, (long)oldval);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_bool_compare_and_swap(a, oldval, newval);
-#elif defined(__MACOS__) && defined(__LP64__)  /* this is deprecated in 10.12 sdk; favor gcc atomics. */
+#elif defined(SDL_PLATFORM_MACOS) && defined(__LP64__)  /* this is deprecated in 10.12 sdk; favor gcc atomics. */
     return OSAtomicCompareAndSwap64Barrier((int64_t)oldval, (int64_t)newval, (int64_t *)a);
-#elif defined(__MACOS__) && !defined(__LP64__) /* this is deprecated in 10.12 sdk; favor gcc atomics. */
+#elif defined(SDL_PLATFORM_MACOS) && !defined(__LP64__) /* this is deprecated in 10.12 sdk; favor gcc atomics. */
     return OSAtomicCompareAndSwap32Barrier((int32_t)oldval, (int32_t)newval, (int32_t *)a);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return (atomic_cas_ptr(a, oldval, newval) == oldval);
 #elif defined(EMULATE_CAS)
     SDL_bool retval = SDL_FALSE;
@@ -190,7 +190,7 @@ int SDL_AtomicSet(SDL_AtomicInt *a, int v)
     return _SDL_xchg_watcom(&a->value, v);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_lock_test_and_set(&a->value, v);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return (int)atomic_swap_uint((volatile uint_t *)&a->value, v);
 #else
     int value;
@@ -209,7 +209,7 @@ void *SDL_AtomicSetPtr(void **a, void *v)
     return (void *)_SDL_xchg_watcom((int *)a, (long)v);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_lock_test_and_set(a, v);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return atomic_swap_ptr(a, v);
 #else
     void *value;
@@ -229,7 +229,7 @@ int SDL_AtomicAdd(SDL_AtomicInt *a, int v)
     return _SDL_xadd_watcom(&a->value, v);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_fetch_and_add(&a->value, v);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     int pv = a->value;
     membar_consumer();
     atomic_add_int((volatile uint_t *)&a->value, v);
@@ -254,9 +254,9 @@ int SDL_AtomicGet(SDL_AtomicInt *a)
     return _SDL_xadd_watcom(&a->value, 0);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_or_and_fetch(&a->value, 0);
-#elif defined(__MACOS__) /* this is deprecated in 10.12 sdk; favor gcc atomics. */
+#elif defined(SDL_PLATFORM_MACOS) /* this is deprecated in 10.12 sdk; favor gcc atomics. */
     return sizeof(a->value) == sizeof(uint32_t) ? OSAtomicOr32Barrier(0, (volatile uint32_t *)&a->value) : OSAtomicAdd64Barrier(0, (volatile int64_t *)&a->value);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return atomic_or_uint((volatile uint_t *)&a->value, 0);
 #else
     int value;
@@ -275,7 +275,7 @@ void *SDL_AtomicGetPtr(void **a)
     return _InterlockedCompareExchangePointer(a, NULL, NULL);
 #elif defined(HAVE_GCC_ATOMICS)
     return __sync_val_compare_and_swap(a, (void *)0, (void *)0);
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     return atomic_cas_ptr(a, (void *)0, (void *)0);
 #else
     void *value;

src/atomic/SDL_spinlock.c

@@ -20,15 +20,15 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
 #include "../core/windows/SDL_windows.h"
 #endif
 
-#if !defined(HAVE_GCC_ATOMICS) && defined(__SOLARIS__)
+#if !defined(HAVE_GCC_ATOMICS) && defined(SDL_PLATFORM_SOLARIS)
 #include <atomic.h>
 #endif
 
-#if !defined(HAVE_GCC_ATOMICS) && defined(__RISCOS__)
+#if !defined(HAVE_GCC_ATOMICS) && defined(SDL_PLATFORM_RISCOS)
 #include <unixlib/local.h>
 #endif
 
@@ -40,7 +40,7 @@
 #include <kernel.h>
 #endif
 
-#if !defined(HAVE_GCC_ATOMICS) && defined(__MACOS__)
+#if !defined(HAVE_GCC_ATOMICS) && defined(SDL_PLATFORM_MACOS)
 #include <libkern/OSAtomic.h>
 #endif
 
@@ -79,7 +79,7 @@ SDL_bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
      defined(__ARM_ARCH_5TEJ__))
     int result;
 
-#ifdef __RISCOS__
+#ifdef SDL_PLATFORM_RISCOS
     if (__cpucap_have_rex()) {
         __asm__ __volatile__(
             "ldrex %0, [%2]\nteq   %0, #0\nstrexeq %0, %1, [%2]"
@@ -115,15 +115,15 @@ SDL_bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
         : "cc", "memory");
     return result == 0;
 
-#elif defined(__MACOS__) || defined(__IOS__) || defined(__TVOS__)
+#elif defined(SDL_PLATFORM_MACOS) || defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS)
     /* Maybe used for PowerPC, but the Intel asm or gcc atomics are favored. */
     return OSAtomicCompareAndSwap32Barrier(0, 1, lock);
 
-#elif defined(__SOLARIS__) && defined(_LP64)
+#elif defined(SDL_PLATFORM_SOLARIS) && defined(_LP64)
     /* Used for Solaris with non-gcc compilers. */
     return ((int)atomic_cas_64((volatile uint64_t *)lock, 0, 1) == 0);
 
-#elif defined(__SOLARIS__) && !defined(_LP64)
+#elif defined(SDL_PLATFORM_SOLARIS) && !defined(_LP64)
     /* Used for Solaris with non-gcc compilers. */
     return ((int)atomic_cas_32((volatile uint32_t *)lock, 0, 1) == 0);
 #elif defined(PS2)
@@ -192,7 +192,7 @@ void SDL_UnlockSpinlock(SDL_SpinLock *lock)
     SDL_CompilerBarrier();
     *lock = 0;
 
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
     /* Used for Solaris when not using gcc. */
     *lock = 0;
     membar_producer();

src/audio/SDL_audiodev.c

@@ -32,7 +32,7 @@
 #include "SDL_audiodev_c.h"
 
 #ifndef SDL_PATH_DEV_DSP
-#if defined(__NETBSD__) || defined(__OPENBSD__)
+#if defined(SDL_PLATFORM_NETBSD) || defined(SDL_PLATFORM_OPENBSD)
 #define SDL_PATH_DEV_DSP "/dev/audio"
 #else
 #define SDL_PATH_DEV_DSP "/dev/dsp"

src/audio/SDL_audiotypecvt.c

@@ -25,17 +25,17 @@
 // TODO: NEON is disabled until https://github.com/libsdl-org/SDL/issues/8352 can be fixed
 #undef SDL_NEON_INTRINSICS
 
-#ifndef __EMSCRIPTEN__
+#ifndef SDL_PLATFORM_EMSCRIPTEN
 #if defined(__x86_64__) && defined(SDL_SSE2_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 // x86_64 guarantees SSE2.
-#elif defined(__MACOS__) && defined(SDL_SSE2_INTRINSICS)
+#elif defined(SDL_PLATFORM_MACOS) && defined(SDL_SSE2_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 // macOS/Intel guarantees SSE2.
 #elif defined(__ARM_ARCH) && (__ARM_ARCH >= 8) && defined(SDL_NEON_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 // ARMv8+ promise NEON.
-#elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7) && defined(SDL_NEON_INTRINSICS)
+#elif defined(SDL_PLATFORM_APPLE) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7) && defined(SDL_NEON_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 // All Apple ARMv7 chips promise NEON support.
 #endif
-#endif /* __EMSCRIPTEN__ */
+#endif /* SDL_PLATFORM_EMSCRIPTEN */
 
 // Set to zero if platform is guaranteed to use a SIMD codepath here.
 #if !defined(NEED_SCALAR_CONVERTER_FALLBACKS)

src/audio/coreaudio/SDL_coreaudio.h

@@ -25,7 +25,7 @@
 
 #include "../SDL_sysaudio.h"
 
-#ifndef __IOS__
+#ifndef SDL_PLATFORM_IOS
 #define MACOSX_COREAUDIO
 #endif
 

src/audio/coreaudio/SDL_coreaudio.m

@@ -753,7 +753,7 @@ static int PrepareAudioQueue(SDL_AudioDevice *device)
 
     // Make sure we can feed the device a minimum amount of time
     double MINIMUM_AUDIO_BUFFER_TIME_MS = 15.0;
-    #ifdef __IOS__
+    #ifdef SDL_PLATFORM_IOS
     if (SDL_floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {
         // Older iOS hardware, use 40 ms as a minimum time
         MINIMUM_AUDIO_BUFFER_TIME_MS = 40.0;

src/audio/wasapi/SDL_wasapi.c

@@ -564,7 +564,7 @@ static int mgmtthrtask_PrepDevice(void *userdata)
     IAudioClient *client = device->hidden->client;
     SDL_assert(client != NULL);
 
-#if defined(__WINRT__) || defined(__GDK__) // CreateEventEx() arrived in Vista, so we need an #ifdef for XP.
+#if defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK) // CreateEventEx() arrived in Vista, so we need an #ifdef for XP.
     device->hidden->event = CreateEventEx(NULL, NULL, 0, EVENT_ALL_ACCESS);
 #else
     device->hidden->event = CreateEventW(NULL, 0, 0, NULL);

src/audio/wasapi/SDL_wasapi_win32.c

@@ -26,7 +26,7 @@
    The code in SDL_wasapi.c is used by both standard Windows and WinRT builds
    to deal with audio and calls into these functions. */
 
-#if defined(SDL_AUDIO_DRIVER_WASAPI) && !defined(__WINRT__)
+#if defined(SDL_AUDIO_DRIVER_WASAPI) && !defined(SDL_PLATFORM_WINRT)
 
 #include "../../core/windows/SDL_windows.h"
 #include "../../core/windows/SDL_immdevice.h"
@@ -202,4 +202,4 @@ void WASAPI_PlatformFreeDeviceHandle(SDL_AudioDevice *device)
     SDL_IMMDevice_FreeDeviceHandle(device);
 }
 
-#endif // SDL_AUDIO_DRIVER_WASAPI && !defined(__WINRT__)
+#endif // SDL_AUDIO_DRIVER_WASAPI && !defined(SDL_PLATFORM_WINRT)

src/audio/wasapi/SDL_wasapi_winrt.cpp

@@ -25,7 +25,7 @@
 //  is in SDL_wasapi_win32.c. The code in SDL_wasapi.c is used by both standard
 //  Windows and WinRT builds to deal with audio and calls into these functions.
 
-#if defined(SDL_AUDIO_DRIVER_WASAPI) && defined(__WINRT__)
+#if defined(SDL_AUDIO_DRIVER_WASAPI) && defined(SDL_PLATFORM_WINRT)
 
 #include <Windows.h>
 #include <windows.ui.core.h>
@@ -357,4 +357,4 @@ void WASAPI_PlatformFreeDeviceHandle(SDL_AudioDevice *device)
     SDL_free(device->handle);
 }
 
-#endif // SDL_AUDIO_DRIVER_WASAPI && defined(__WINRT__)
+#endif // SDL_AUDIO_DRIVER_WASAPI && defined(SDL_PLATFORM_WINRT)

src/core/SDL_core_unsupported.c

@@ -28,7 +28,7 @@ DECLSPEC void SDLCALL SDL_SetX11EventHook(SDL_X11EventHook callback, void *userd
 
 #endif
 
-#ifndef __LINUX__
+#ifndef SDL_PLATFORM_LINUX
 
 DECLSPEC int SDLCALL SDL_LinuxSetThreadPriority(Sint64 threadID, int priority);
 int SDL_LinuxSetThreadPriority(Sint64 threadID, int priority)
@@ -49,7 +49,7 @@ int SDL_LinuxSetThreadPriorityAndPolicy(Sint64 threadID, int sdlPriority, int sc
 
 #endif
 
-#ifndef __GDK__
+#ifndef SDL_PLATFORM_GDK
 
 DECLSPEC void SDLCALL SDL_GDKSuspendComplete(void);
 void SDL_GDKSuspendComplete(void)
@@ -65,7 +65,7 @@ int SDL_GDKGetDefaultUser(void *outUserHandle)
 
 #endif
 
-#if !(defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__))
+#if !(defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK))
 
 DECLSPEC int SDLCALL SDL_RegisterApp(const char *name, Uint32 style, void *hInst);
 int SDL_RegisterApp(const char *name, Uint32 style, void *hInst)
@@ -92,7 +92,7 @@ void SDL_UnregisterApp(void)
 
 #endif
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 
 /* Returns SDL_WinRT_DeviceFamily enum */
 DECLSPEC int SDLCALL SDL_WinRTGetDeviceFamily(void);
@@ -119,7 +119,7 @@ const char *SDL_WinRTGetFSPathUTF8(int pathType)
 }
 #endif
 
-#ifndef __ANDROID__
+#ifndef SDL_PLATFORM_ANDROID
 
 DECLSPEC void SDLCALL SDL_AndroidBackButton(void);
 void SDL_AndroidBackButton()
@@ -225,7 +225,7 @@ Sint32 JNI_OnLoad(void *vm, void *reserved)
 }
 #endif
 
-#if defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
 char *SDL_GetUserFolder(SDL_Folder folder)
 {
     (void)folder;

src/core/SDL_runapp.c

@@ -22,7 +22,7 @@
 
 /* Most platforms that use/need SDL_main have their own SDL_RunApp() implementation.
  * If not, you can special case it here by appending || defined(__YOUR_PLATFORM__) */
-#if ( !defined(SDL_MAIN_NEEDED) && !defined(SDL_MAIN_AVAILABLE) ) || defined(__ANDROID__)
+#if ( !defined(SDL_MAIN_NEEDED) && !defined(SDL_MAIN_AVAILABLE) ) || defined(SDL_PLATFORM_ANDROID)
 
 DECLSPEC int
 SDL_RunApp(int argc, char* argv[], SDL_main_func mainFunction, void * reserved)

src/core/android/SDL_android.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 
 #include "SDL_android.h"
 
@@ -2741,4 +2741,4 @@ int Android_JNI_OpenURL(const char *url)
     return ret;
 }
 
-#endif /* __ANDROID__ */
+#endif /* SDL_PLATFORM_ANDROID */

src/core/gdk/SDL_gdk.cpp

@@ -190,7 +190,7 @@ SDL_RunApp(int, char**, SDL_main_func mainFunction, void *reserved)
 
         XGameRuntimeUninitialize();
     } else {
-#ifdef __WINGDK__
+#ifdef SDL_PLATFORM_WINGDK
         SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Fatal Error", "[GDK] Could not initialize - aborting", NULL);
 #else
         SDL_assert_always(0 && "[GDK] Could not initialize - aborting");

src/core/haiku/SDL_BeApp.cc

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#ifdef __HAIKU__
+#ifdef SDL_PLATFORM_HAIKU
 
 /* Handle the BeApp specific portions of the application */
 
@@ -192,4 +192,4 @@ void SDL_BLooper::ClearID(SDL_BWin *bwin) {
     }
 }
 
-#endif /* __HAIKU__ */
+#endif /* SDL_PLATFORM_HAIKU */

src/core/linux/SDL_fcitx.c

@@ -54,15 +54,15 @@ static FcitxClient fcitx_client;
 
 static char *GetAppName(void)
 {
-#if defined(__LINUX__) || defined(__FREEBSD__)
+#if defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_FREEBSD)
     char *spot;
     char procfile[1024];
     char linkfile[1024];
     int linksize;
 
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
     (void)SDL_snprintf(procfile, sizeof(procfile), "/proc/%d/exe", getpid());
-#elif defined(__FREEBSD__)
+#elif defined(SDL_PLATFORM_FREEBSD)
     (void)SDL_snprintf(procfile, sizeof(procfile), "/proc/%d/file", getpid());
 #endif
     linksize = readlink(procfile, linkfile, sizeof(linkfile) - 1);
@@ -75,7 +75,7 @@ static char *GetAppName(void)
             return SDL_strdup(linkfile);
         }
     }
-#endif /* __LINUX__ || __FREEBSD__ */
+#endif /* SDL_PLATFORM_LINUX || SDL_PLATFORM_FREEBSD */
 
     return SDL_strdup("SDL_App");
 }

src/core/linux/SDL_threadprio.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
 
 #ifndef SDL_THREADS_DISABLED
 #include <sys/time.h>
@@ -342,4 +342,4 @@ int SDL_LinuxSetThreadPriorityAndPolicy(Sint64 threadID, int sdlPriority, int sc
 #endif
 }
 
-#endif /* __LINUX__ */
+#endif /* SDL_PLATFORM_LINUX */

src/core/n3ds/SDL_n3ds.c

@@ -21,7 +21,7 @@
 
 #include "SDL_internal.h"
 
-#ifdef __3DS__
+#ifdef SDL_PLATFORM_3DS
 
 #include <3ds.h>
 

src/core/ngage/SDL_ngage_runapp.cpp

@@ -4,7 +4,7 @@
 
 #include "SDL_internal.h"
 
-#ifdef __NGAGE__
+#ifdef SDL_PLATFORM_NGAGE
 
 #include <e32std.h>
 #include <e32def.h>
@@ -75,4 +75,4 @@ cleanup:
     return ret;
 }
 
-#endif // __NGAGE__
+#endif // SDL_PLATFORM_NGAGE

src/core/openbsd/SDL_wscons_kbd.c

@@ -34,7 +34,7 @@
 
 #include "../../events/SDL_events_c.h"
 
-#ifdef __NetBSD__
+#ifdef SDL_PLATFORM_NETBSD
 #define KS_GROUP_Ascii    KS_GROUP_Plain
 #define KS_Cmd_ScrollBack KS_Cmd_ScrollFastUp
 #define KS_Cmd_ScrollFwd  KS_Cmd_ScrollFastDown
@@ -224,7 +224,7 @@ static struct SDL_wscons_compose_tab_s
     { { KS_asciicircum, KS_u }, KS_ucircumflex },
     { { KS_grave, KS_u }, KS_ugrave },
     { { KS_acute, KS_y }, KS_yacute },
-#ifndef __NetBSD__
+#ifndef SDL_PLATFORM_NETBSD
     { { KS_dead_caron, KS_space }, KS_L2_caron },
     { { KS_dead_caron, KS_S }, KS_L2_Scaron },
     { { KS_dead_caron, KS_Z }, KS_L2_Zcaron },
@@ -319,7 +319,7 @@ static struct wscons_keycode_to_SDL
     { KS_f18, SDL_SCANCODE_F18 },
     { KS_f19, SDL_SCANCODE_F19 },
     { KS_f20, SDL_SCANCODE_F20 },
-#ifndef __NetBSD__
+#ifndef SDL_PLATFORM_NETBSD
     { KS_f21, SDL_SCANCODE_F21 },
     { KS_f22, SDL_SCANCODE_F22 },
     { KS_f23, SDL_SCANCODE_F23 },
@@ -620,7 +620,7 @@ static void updateKeyboard(SDL_WSCONS_input_data *input)
                     input->lockheldstate[2] = 1;
                     break;
                 }
-#ifndef __NetBSD__
+#ifndef SDL_PLATFORM_NETBSD
                 case KS_Mode_Lock:
                 {
                     if (input->lockheldstate[3] >= 1) {
@@ -728,7 +728,7 @@ static void updateKeyboard(SDL_WSCONS_input_data *input)
                         input->lockheldstate[2] = 0;
                     }
                 } break;
-#ifndef __NetBSD__
+#ifndef SDL_PLATFORM_NETBSD
                 case KS_Mode_Lock:
                 {
                     if (input->lockheldstate[3]) {

src/core/ps2/SDL_ps2.c

@@ -21,7 +21,7 @@
 
 #include "SDL_internal.h"
 
-#ifdef __PS2__
+#ifdef SDL_PLATFORM_PS2
 
 /* SDL_RunApp() code for PS2 based on SDL_ps2_main.c, fjtrujy@gmail.com */
 
@@ -82,4 +82,4 @@ SDL_RunApp(int argc, char* argv[], SDL_main_func mainFunction, void * reserved)
     return res;
 }
 
-#endif /* __PS2__ */
+#endif /* SDL_PLATFORM_PS2 */

src/core/psp/SDL_psp.c

@@ -21,7 +21,7 @@
 
 #include "SDL_internal.h"
 
-#ifdef __PSP__
+#ifdef SDL_PLATFORM_PSP
 
 /* SDL_RunApp() for PSP based on SDL_psp_main.c, placed in the public domain by Sam Lantinga  3/13/14 */
 
@@ -79,4 +79,4 @@ SDL_RunApp(int argc, char* argv[], SDL_main_func mainFunction, void * reserved)
     return mainFunction(argc, argv);
 }
 
-#endif /* __PSP__ */
+#endif /* SDL_PLATFORM_PSP */

src/core/unix/SDL_appid.c

@@ -30,15 +30,15 @@ const char *SDL_GetExeName()
 
     /* TODO: Use a fallback if BSD has no mounted procfs (OpenBSD has no procfs at all) */
     if (!proc_name) {
-#if defined(__LINUX__) || defined(__FREEBSD__) || defined (__NETBSD__)
+#if defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_FREEBSD) || defined (SDL_PLATFORM_NETBSD)
         static char linkfile[1024];
         int linksize;
 
-#if defined(__LINUX__)
+#if defined(SDL_PLATFORM_LINUX)
         const char *proc_path = "/proc/self/exe";
-#elif defined(__FREEBSD__)
+#elif defined(SDL_PLATFORM_FREEBSD)
         const char *proc_path = "/proc/curproc/file";
-#elif defined(__NETBSD__)
+#elif defined(SDL_PLATFORM_NETBSD)
         const char *proc_path = "/proc/curproc/exe";
 #endif
         linksize = readlink(proc_path, linkfile, sizeof(linkfile) - 1);

src/core/windows/SDL_hid.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 
 #include "SDL_hid.h"
 
@@ -81,4 +81,4 @@ void WIN_UnloadHIDDLL(void)
     }
 }
 
-#endif /* !__WINRT__ */
+#endif /* !SDL_PLATFORM_WINRT */

src/core/windows/SDL_hid.h

@@ -25,7 +25,7 @@
 
 #include "SDL_windows.h"
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 
 typedef LONG NTSTATUS;
 typedef USHORT USAGE;
@@ -208,6 +208,6 @@ extern HidP_GetValueCaps_t SDL_HidP_GetValueCaps;
 extern HidP_MaxDataListLength_t SDL_HidP_MaxDataListLength;
 extern HidP_GetData_t SDL_HidP_GetData;
 
-#endif /* !__WINRT__ */
+#endif /* !SDL_PLATFORM_WINRT */
 
 #endif /* SDL_hid_h_ */

src/core/windows/SDL_immdevice.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if (defined(__WIN32__) || defined(__GDK__)) && defined(HAVE_MMDEVICEAPI_H)
+#if (defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)) && defined(HAVE_MMDEVICEAPI_H)
 
 #include "SDL_windows.h"
 #include "SDL_immdevice.h"
@@ -429,4 +429,4 @@ void SDL_IMMDevice_EnumerateEndpoints(SDL_AudioDevice **default_output, SDL_Audi
     IMMDeviceEnumerator_RegisterEndpointNotificationCallback(enumerator, (IMMNotificationClient *)&notification_client);
 }
 
-#endif /* (defined(__WIN32__) || defined(__GDK__)) && defined(HAVE_MMDEVICEAPI_H) */
+#endif /* (defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)) && defined(HAVE_MMDEVICEAPI_H) */

src/core/windows/SDL_windows.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
 
 #include "SDL_windows.h"
 
@@ -86,14 +86,14 @@ WIN_CoInitialize(void)
 
        If you need multi-threaded mode, call CoInitializeEx() before SDL_Init()
     */
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
     /* DLudwig: On WinRT, it is assumed that COM was initialized in main().
        CoInitializeEx is available (not CoInitialize though), however
        on WinRT, main() is typically declared with the [MTAThread]
        attribute, which, AFAIK, should initialize COM.
     */
     return S_OK;
-#elif defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#elif defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     /* On Xbox, there's no need to call CoInitializeEx (and it's not implemented) */
     return S_OK;
 #else
@@ -114,12 +114,12 @@ WIN_CoInitialize(void)
 
 void WIN_CoUninitialize(void)
 {
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
     CoUninitialize();
 #endif
 }
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 FARPROC WIN_LoadComBaseFunction(const char *name)
 {
     static SDL_bool s_bLoaded;
@@ -140,7 +140,7 @@ FARPROC WIN_LoadComBaseFunction(const char *name)
 HRESULT
 WIN_RoInitialize(void)
 {
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
     return S_OK;
 #else
     typedef HRESULT(WINAPI * RoInitialize_t)(RO_INIT_TYPE initType);
@@ -167,7 +167,7 @@ WIN_RoInitialize(void)
 
 void WIN_RoUninitialize(void)
 {
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
     typedef void(WINAPI * RoUninitialize_t)(void);
     RoUninitialize_t RoUninitializeFunc = (RoUninitialize_t)WIN_LoadComBaseFunction("RoUninitialize");
     if (RoUninitializeFunc) {
@@ -176,7 +176,7 @@ void WIN_RoUninitialize(void)
 #endif
 }
 
-#if !defined(__WINRT__) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
 static BOOL IsWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WORD wServicePackMajor)
 {
     OSVERSIONINFOEXW osvi;
@@ -199,7 +199,7 @@ static BOOL IsWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WO
 
 BOOL WIN_IsWindowsVistaOrGreater(void)
 {
-#if defined(__WINRT__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     return TRUE;
 #else
     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_VISTA), LOBYTE(_WIN32_WINNT_VISTA), 0);
@@ -208,7 +208,7 @@ BOOL WIN_IsWindowsVistaOrGreater(void)
 
 BOOL WIN_IsWindows7OrGreater(void)
 {
-#if defined(__WINRT__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     return TRUE;
 #else
     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN7), LOBYTE(_WIN32_WINNT_WIN7), 0);
@@ -217,7 +217,7 @@ BOOL WIN_IsWindows7OrGreater(void)
 
 BOOL WIN_IsWindows8OrGreater(void)
 {
-#if defined(__WINRT__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     return TRUE;
 #else
     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN8), LOBYTE(_WIN32_WINNT_WIN8), 0);
@@ -247,7 +247,7 @@ WASAPI doesn't need this. This is just for DirectSound/WinMM.
 */
 char *WIN_LookupAudioDeviceName(const WCHAR *name, const GUID *guid)
 {
-#if defined(__WINRT__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     return WIN_StringToUTF8(name); /* No registry access on WinRT/UWP and Xbox, go with what we've got. */
 #else
     static const GUID nullguid = { 0 };
@@ -300,7 +300,7 @@ char *WIN_LookupAudioDeviceName(const WCHAR *name, const GUID *guid)
     retval = WIN_StringToUTF8(strw);
     SDL_free(strw);
     return retval ? retval : WIN_StringToUTF8(name);
-#endif /* if __WINRT__ / else */
+#endif /* if SDL_PLATFORM_WINRT / else */
 }
 
 BOOL WIN_IsEqualGUID(const GUID *a, const GUID *b)
@@ -364,7 +364,7 @@ SDL_AudioFormat SDL_WaveFormatExToSDLFormat(WAVEFORMATEX *waveformat)
 
 /* Win32-specific SDL_RunApp(), which does most of the SDL_main work,
   based on SDL_windows_main.c, placed in the public domain by Sam Lantinga  4/13/98 */
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
 
 #include <shellapi.h> /* CommandLineToArgvW() */
 
@@ -433,6 +433,6 @@ DECLSPEC int MINGW32_FORCEALIGN SDL_RunApp(int _argc, char* _argv[], SDL_main_fu
     return result;
 }
 
-#endif /* __WIN32__ */
+#endif /* SDL_PLATFORM_WIN32 */
 
-#endif /* defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK) */

src/core/windows/SDL_windows.h

@@ -24,7 +24,7 @@
 #ifndef _INCLUDED_WINDOWS_H
 #define _INCLUDED_WINDOWS_H
 
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN 1
 #endif
@@ -45,7 +45,7 @@
 #endif
 #define WINVER _WIN32_WINNT
 
-#elif defined(__WINGDK__)
+#elif defined(SDL_PLATFORM_WINGDK)
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN 1
 #endif
@@ -60,7 +60,7 @@
 #define _WIN32_WINNT 0xA00
 #define WINVER       _WIN32_WINNT
 
-#elif defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#elif defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN 1
 #endif
@@ -132,7 +132,7 @@ extern int WIN_SetErrorFromHRESULT(const char *prefix, HRESULT hr);
 /* Sets an error message based on GetLastError(). Always return -1. */
 extern int WIN_SetError(const char *prefix);
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 /* Load a function from combase.dll */
 FARPROC WIN_LoadComBaseFunction(const char *name);
 #endif

src/core/windows/SDL_xinput.c

@@ -37,7 +37,7 @@ DWORD SDL_XInputVersion = 0;
 static HMODULE s_pXInputDLL = NULL;
 static int s_XInputDLLRefCount = 0;
 
-#if defined(__WINRT__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
 
 int WIN_LoadXInputDLL(void)
 {
@@ -68,7 +68,7 @@ void WIN_UnloadXInputDLL(void)
 {
 }
 
-#else /* !(defined(__WINRT__) || defined(__XBOXONE__) || defined(__XBOXSERIES__)) */
+#else /* !(defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)) */
 
 int WIN_LoadXInputDLL(void)
 {
@@ -136,7 +136,7 @@ void WIN_UnloadXInputDLL(void)
     }
 }
 
-#endif /* __WINRT__ */
+#endif /* SDL_PLATFORM_WINRT */
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus

src/core/windows/SDL_xinput.h

@@ -26,7 +26,7 @@
 #include "SDL_windows.h"
 
 #ifdef HAVE_XINPUT_H
-#if defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
 /* Xbox supports an XInput wrapper which is a C++-only header... */
 #include <math.h> /* Required to compile with recent MSVC... */
 #include <XInputOnGameInput.h>

src/cpuinfo/SDL_cpuinfo.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__WIN32__) || defined(__WINRT__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
 #include "../core/windows/SDL_windows.h"
 #endif
 
@@ -33,13 +33,13 @@
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #endif
-#if defined(__MACOS__) && (defined(__ppc__) || defined(__ppc64__))
+#if defined(SDL_PLATFORM_MACOS) && (defined(__ppc__) || defined(__ppc64__))
 #include <sys/sysctl.h> /* For AltiVec check */
-#elif defined(__OpenBSD__) && defined(__powerpc__)
+#elif defined(SDL_PLATFORM_OPENBSD) && defined(__powerpc__)
 #include <sys/types.h>
 #include <sys/sysctl.h> /* For AltiVec check */
 #include <machine/cpu.h>
-#elif defined(__FreeBSD__) && defined(__powerpc__)
+#elif defined(SDL_PLATFORM_FREEBSD) && defined(__powerpc__)
 #include <machine/cpu.h>
 #include <sys/auxv.h>
 #elif defined(SDL_ALTIVEC_BLITTERS) && defined(HAVE_SETJMP)
@@ -47,7 +47,7 @@
 #include <setjmp.h>
 #endif
 
-#if (defined(__LINUX__) || defined(__ANDROID__)) && defined(__arm__)
+#if (defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_ANDROID)) && defined(__arm__)
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -66,7 +66,7 @@
 #endif
 #endif
 
-#if defined(__ANDROID__) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
+#if defined(SDL_PLATFORM_ANDROID) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
 #include <cpu-features.h>
 #endif
 
@@ -74,16 +74,16 @@
 #include <sys/auxv.h>
 #endif
 
-#ifdef __RISCOS__
+#ifdef SDL_PLATFORM_RISCOS
 #include <kernel.h>
 #include <swis.h>
 #endif
 
-#ifdef __PS2__
+#ifdef SDL_PLATFORM_PS2
 #include <kernel.h>
 #endif
 
-#ifdef __HAIKU__
+#ifdef SDL_PLATFORM_HAIKU
 #include <kernel/OS.h>
 #endif
 
@@ -106,7 +106,7 @@
 #define CPU_CFG2_LSX  (1 << 6)
 #define CPU_CFG2_LASX (1 << 7)
 
-#if defined(SDL_ALTIVEC_BLITTERS) && defined(HAVE_SETJMP) && !defined(__MACOS__) && !defined(__OpenBSD__) && !defined(__FreeBSD__)
+#if defined(SDL_ALTIVEC_BLITTERS) && defined(HAVE_SETJMP) && !defined(SDL_PLATFORM_MACOS) && !defined(SDL_PLATFORM_OPENBSD) && !defined(SDL_PLATFORM_FREEBSD)
 /* This is the brute force way of detecting instruction sets...
    the idea is borrowed from the libmpeg2 library - thanks!
  */
@@ -122,7 +122,7 @@ static int CPU_haveCPUID(void)
     int has_CPUID = 0;
 
 /* *INDENT-OFF* */ /* clang-format off */
-#ifndef __EMSCRIPTEN__
+#ifndef SDL_PLATFORM_EMSCRIPTEN
 #if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
     __asm__ (
 "        pushfl                      # Get original EFLAGS             \n"
@@ -209,7 +209,7 @@ done:
 "1:                            \n"
     );
 #endif
-#endif /* !__EMSCRIPTEN__ */
+#endif /* !SDL_PLATFORM_EMSCRIPTEN */
 /* *INDENT-ON* */ /* clang-format on */
     return has_CPUID;
 }
@@ -318,8 +318,8 @@ static int CPU_haveAltiVec(void)
 {
     volatile int altivec = 0;
 #ifndef SDL_CPUINFO_DISABLED
-#if (defined(__MACOS__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
+#if (defined(SDL_PLATFORM_MACOS) && (defined(__ppc__) || defined(__ppc64__))) || (defined(SDL_PLATFORM_OPENBSD) && defined(__powerpc__))
-#ifdef __OpenBSD__
+#ifdef SDL_PLATFORM_OPENBSD
     int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
 #else
     int selectors[2] = { CTL_HW, HW_VECTORUNIT };
@@ -330,7 +330,7 @@ static int CPU_haveAltiVec(void)
     if (0 == error) {
         altivec = (hasVectorUnit != 0);
     }
-#elif defined(__FreeBSD__) && defined(__powerpc__)
+#elif defined(SDL_PLATFORM_FREEBSD) && defined(__powerpc__)
     unsigned long cpufeatures = 0;
     elf_aux_info(AT_HWCAP, &cpufeatures, sizeof(cpufeatures));
     altivec = cpufeatures & PPC_FEATURE_HAS_ALTIVEC;
@@ -361,7 +361,7 @@ static int CPU_haveARMSIMD(void)
     return 0;
 }
 
-#elif defined(__LINUX__)
+#elif defined(SDL_PLATFORM_LINUX)
 static int CPU_haveARMSIMD(void)
 {
     int arm_simd = 0;
@@ -384,7 +384,7 @@ static int CPU_haveARMSIMD(void)
     return arm_simd;
 }
 
-#elif defined(__RISCOS__)
+#elif defined(SDL_PLATFORM_RISCOS)
 static int CPU_haveARMSIMD(void)
 {
     _kernel_swi_regs regs;
@@ -414,7 +414,7 @@ static int CPU_haveARMSIMD(void)
 }
 #endif
 
-#if defined(__LINUX__) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
+#if defined(SDL_PLATFORM_LINUX) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
 static int readProcAuxvForNeon(void)
 {
     int neon = 0;
@@ -439,7 +439,7 @@ static int CPU_haveNEON(void)
 {
 /* The way you detect NEON is a privileged instruction on ARM, so you have
    query the OS kernel in a platform-specific way. :/ */
-#if (defined(__WINDOWS__) || defined(__WINRT__) || defined(__GDK__)) && (defined(_M_ARM) || defined(_M_ARM64))
+#if (defined(SDL_PLATFORM_WINDOWS) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)) && (defined(_M_ARM) || defined(_M_ARM64))
 /* Visual Studio, for ARM, doesn't define __ARM_ARCH. Handle this first. */
 /* Seems to have been removed */
 #ifndef PF_ARM_NEON_INSTRUCTIONS_AVAILABLE
@@ -449,18 +449,18 @@ static int CPU_haveNEON(void)
     return IsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE) != 0;
 #elif (defined(__ARM_ARCH) && (__ARM_ARCH >= 8)) || defined(__aarch64__)
     return 1; /* ARMv8 always has non-optional NEON support. */
-#elif defined(__VITA__)
+#elif defined(SDL_PLATFORM_VITA)
     return 1;
-#elif defined(__3DS__)
+#elif defined(SDL_PLATFORM_3DS)
     return 0;
-#elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7)
+#elif defined(SDL_PLATFORM_APPLE) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7)
     /* (note that sysctlbyname("hw.optional.neon") doesn't work!) */
     return 1; /* all Apple ARMv7 chips and later have NEON. */
-#elif defined(__APPLE__)
+#elif defined(SDL_PLATFORM_APPLE)
     return 0; /* assume anything else from Apple doesn't have NEON. */
 #elif !defined(__arm__)
     return 0; /* not an ARM CPU at all. */
-#elif defined(__OpenBSD__)
+#elif defined(SDL_PLATFORM_OPENBSD)
     return 1; /* OpenBSD only supports ARMv7 CPUs that have NEON. */
 #elif defined(HAVE_ELF_AUX_INFO)
     unsigned long hasneon = 0;
@@ -468,11 +468,11 @@ static int CPU_haveNEON(void)
         return 0;
     }
     return (hasneon & HWCAP_NEON) == HWCAP_NEON;
-#elif (defined(__LINUX__) || defined(__ANDROID__)) && defined(HAVE_GETAUXVAL)
+#elif (defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_ANDROID)) && defined(HAVE_GETAUXVAL)
     return (getauxval(AT_HWCAP) & HWCAP_NEON) == HWCAP_NEON;
-#elif defined(__LINUX__)
+#elif defined(SDL_PLATFORM_LINUX)
     return readProcAuxvForNeon();
-#elif defined(__ANDROID__)
+#elif defined(SDL_PLATFORM_ANDROID)
     /* Use NDK cpufeatures to read either /proc/self/auxv or /proc/cpuinfo */
     {
         AndroidCpuFamily cpu_family = android_getCpuFamily();
@@ -484,7 +484,7 @@ static int CPU_haveNEON(void)
         }
         return 0;
     }
-#elif defined(__RISCOS__)
+#elif defined(SDL_PLATFORM_RISCOS)
     /* Use the VFPSupport_Features SWI to access the MVFR registers */
     {
         _kernel_swi_regs regs;
@@ -496,7 +496,7 @@ static int CPU_haveNEON(void)
         }
         return 0;
     }
-#elif defined(__EMSCRIPTEN__)
+#elif defined(SDL_PLATFORM_EMSCRIPTEN)
     return 0;
 #else
 #warning SDL_HasNEON is not implemented for this ARM platform. Write me.
@@ -629,7 +629,7 @@ int SDL_GetCPUCount(void)
             sysctlbyname("hw.ncpu", &SDL_CPUCount, &size, NULL, 0);
         }
 #endif
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
         if (SDL_CPUCount <= 0) {
             SYSTEM_INFO info;
             GetSystemInfo(&info);
@@ -1029,7 +1029,7 @@ int SDL_GetSystemRAM(void)
             }
         }
 #endif
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
         if (SDL_SystemRAM <= 0) {
             MEMORYSTATUSEX stat;
             stat.dwLength = sizeof(stat);
@@ -1038,7 +1038,7 @@ int SDL_GetSystemRAM(void)
             }
         }
 #endif
-#ifdef __RISCOS__
+#ifdef SDL_PLATFORM_RISCOS
         if (SDL_SystemRAM <= 0) {
             _kernel_swi_regs regs;
             regs.r[0] = 0x108;
@@ -1047,20 +1047,20 @@ int SDL_GetSystemRAM(void)
             }
         }
 #endif
-#ifdef __VITA__
+#ifdef SDL_PLATFORM_VITA
         if (SDL_SystemRAM <= 0) {
             /* Vita has 512MiB on SoC, that's split into 256MiB(+109MiB in extended memory mode) for app
                +26MiB of physically continuous memory, +112MiB of CDRAM(VRAM) + system reserved memory. */
             SDL_SystemRAM = 536870912;
         }
 #endif
-#ifdef __PS2__
+#ifdef SDL_PLATFORM_PS2
         if (SDL_SystemRAM <= 0) {
             /* PlayStation 2 has 32MiB however there are some special models with 64 and 128 */
             SDL_SystemRAM = GetMemorySize();
         }
 #endif
-#ifdef __HAIKU__
+#ifdef SDL_PLATFORM_HAIKU
         if (SDL_SystemRAM <= 0) {
             system_info info;
             if (get_system_info(&info) == B_OK) {

src/dynapi/SDL_dynapi.c

@@ -410,7 +410,7 @@ Sint32 SDL_DYNAPI_entry(Uint32 apiver, void *table, Uint32 tablesize)
 
 /* Obviously we can't use SDL_LoadObject() to load SDL.  :)  */
 /* Also obviously, we never close the loaded library. */
-#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)
+#if defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN)
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN 1
 #endif
@@ -428,7 +428,7 @@ static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
     return retval;
 }
 
-#elif defined(unix) || defined(__unix__) || defined(__APPLE__) || defined(__HAIKU__)
+#elif defined(SDL_PLATFORM_UNIX) || defined(SDL_PLATFORM_APPLE) || defined(SDL_PLATFORM_HAIKU)
 #include <dlfcn.h>
 static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
 {
@@ -452,7 +452,7 @@ static void dynapi_warn(const char *msg)
     const char *caption = "SDL Dynamic API Failure!";
     (void)caption;
 /* SDL_ShowSimpleMessageBox() is a too heavy for here. */
-#if (defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if (defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN)) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
     MessageBoxA(NULL, msg, caption, MB_OK | MB_ICONERROR);
 #elif defined(HAVE_STDIO_H)
     fprintf(stderr, "\n\n%s\n%s\n\n", caption, msg);

src/dynapi/SDL_dynapi.h

@@ -39,31 +39,31 @@
 #error Nope, you have to edit this file to force this off.
 #endif
 
-#ifdef __APPLE__
+#ifdef SDL_PLATFORM_APPLE
 #include "TargetConditionals.h"
 #endif
 
 #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE /* probably not useful on iOS. */
 #define SDL_DYNAMIC_API 0
-#elif defined(__ANDROID__) /* probably not useful on Android. */
+#elif defined(SDL_PLATFORM_ANDROID) /* probably not useful on Android. */
 #define SDL_DYNAMIC_API 0
-#elif defined(__EMSCRIPTEN__) && __EMSCRIPTEN__ /* probably not useful on Emscripten. */
+#elif defined(SDL_PLATFORM_EMSCRIPTEN) /* probably not useful on Emscripten. */
 #define SDL_DYNAMIC_API 0
 #elif defined(SDL_BUILDING_WINRT) && SDL_BUILDING_WINRT /* probably not useful on WinRT, given current .dll loading restrictions */
 #define SDL_DYNAMIC_API 0
-#elif defined(__PS2__) && __PS2__
+#elif defined(SDL_PLATFORM_PS2) && SDL_PLATFORM_PS2
 #define SDL_DYNAMIC_API 0
-#elif defined(__PSP__) && __PSP__
+#elif defined(SDL_PLATFORM_PSP) && SDL_PLATFORM_PSP
 #define SDL_DYNAMIC_API 0
-#elif defined(__riscos__) && __riscos__ /* probably not useful on RISC OS, since dlopen() can't be used when using static linking. */
+#elif defined(SDL_PLATFORM_RISCOS) /* probably not useful on RISC OS, since dlopen() can't be used when using static linking. */
 #define SDL_DYNAMIC_API 0
 #elif defined(__clang_analyzer__) || defined(SDL_THREAD_SAFETY_ANALYSIS)
 #define SDL_DYNAMIC_API 0 /* Turn off for static analysis, so reports are more clear. */
-#elif defined(__VITA__)
+#elif defined(SDL_PLATFORM_VITA)
 #define SDL_DYNAMIC_API 0 /* vitasdk doesn't support dynamic linking */
-#elif defined(__NGAGE__)
+#elif defined(SDL_PLATFORM_NGAGE)
 #define SDL_DYNAMIC_API 0 /* The N-Gage doesn't support dynamic linking either */
-#elif defined(__3DS__)
+#elif defined(SDL_PLATFORM_3DS)
 #define SDL_DYNAMIC_API 0 /* devkitARM doesn't support dynamic linking */
 #elif defined(DYNAPI_NEEDS_DLOPEN) && !defined(HAVE_DLOPEN)
 #define SDL_DYNAMIC_API 0 /* we need dlopen(), but don't have it.... */

src/dynapi/SDL_dynapi_procs.h

@@ -50,7 +50,7 @@ SDL_DYNAPI_PROC(size_t,SDL_RWprintf,(SDL_RWops *a, SDL_PRINTF_FORMAT_STRING cons
 #undef SDL_CreateThread
 #endif
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 SDL_DYNAPI_PROC(SDL_Thread*,SDL_CreateThread,(SDL_ThreadFunction a, const char *b, void *c, pfnSDL_CurrentBeginThread d, pfnSDL_CurrentEndThread e),(a,b,c,d,e),return)
 #else
 SDL_DYNAPI_PROC(SDL_Thread*,SDL_CreateThread,(SDL_ThreadFunction a, const char *b, void *c),(a,b,c),return)
@@ -60,7 +60,7 @@ SDL_DYNAPI_PROC(SDL_Thread*,SDL_CreateThread,(SDL_ThreadFunction a, const char *
 #undef SDL_CreateThreadWithStackSize
 #endif
 
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 SDL_DYNAPI_PROC(SDL_Thread*,SDL_CreateThreadWithStackSize,(SDL_ThreadFunction a, const char *b, const size_t c, void *d, pfnSDL_CurrentBeginThread e, pfnSDL_CurrentEndThread f),(a,b,c,d,e,f),return)
 #else
 SDL_DYNAPI_PROC(SDL_Thread*,SDL_CreateThreadWithStackSize,(SDL_ThreadFunction a, const char *b, const size_t c, void *d),(a,b,c,d),return)

src/dynapi/SDL_dynapi_unsupported.h

@@ -23,25 +23,25 @@
 #define SDL_dynapi_unsupported_h_
 
 
-#if !(defined(__WIN32__) || defined(__GDK__))
+#if !(defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK))
 typedef struct ID3D12Device ID3D12Device;
 typedef void *SDL_WindowsMessageHook;
 #endif
 
-#if !(defined(__WIN32__) || defined(__WINGDK__))
+#if !(defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK))
 typedef struct ID3D11Device ID3D11Device;
 typedef struct IDirect3DDevice9 IDirect3DDevice9;
 #endif
 
-#ifndef __GDK__
+#ifndef SDL_PLATFORM_GDK
 typedef struct XTaskQueueHandle XTaskQueueHandle;
 #endif
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 typedef int SDL_WinRT_DeviceFamily;
 typedef int SDL_WinRT_Path;
 #endif
-#ifndef __GDK__
+#ifndef SDL_PLATFORM_GDK
 typedef struct XUserHandle XUserHandle;
 #endif
 

src/dynapi/gendynapi.py

@@ -25,7 +25,7 @@
 #  It keeps the dynamic API jump table operating correctly.
 #
 #  OS-specific API:
-#   After running the script, you have to manually add #ifdef __WIN32__
+#   After running the script, you have to manually add #ifdef SDL_PLATFORM_WIN32
 #   or similar around the function in 'SDL_dynapi_procs.h'
 #
 

src/events/SDL_events.c

@@ -35,7 +35,7 @@
 #include "../video/SDL_sysvideo.h"
 
 #undef SDL_PRIs64
-#if (defined(__WIN32__) || defined(__GDK__)) && !defined(__CYGWIN__)
+#if (defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)) && !defined(SDL_PLATFORM_CYGWIN)
 #define SDL_PRIs64 "I64d"
 #else
 #define SDL_PRIs64 "lld"

src/events/SDL_mouse.c

@@ -27,7 +27,7 @@
 #include "SDL_events_c.h"
 #include "SDL_mouse_c.h"
 #include "SDL_pen_c.h"
-#if defined(__WIN32__) || defined(__GDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK)
 #include "../core/windows/SDL_windows.h" // For GetDoubleClickTime()
 #endif
 
@@ -48,7 +48,7 @@ static void SDLCALL SDL_MouseDoubleClickTimeChanged(void *userdata, const char *
     if (hint && *hint) {
         mouse->double_click_time = SDL_atoi(hint);
     } else {
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
         mouse->double_click_time = GetDoubleClickTime();
 #else
         mouse->double_click_time = 500;
@@ -107,7 +107,7 @@ static void SDLCALL SDL_TouchMouseEventsChanged(void *userdata, const char *name
     mouse->touch_mouse_events = SDL_GetStringBoolean(hint, SDL_TRUE);
 }
 
-#ifdef __vita__
+#ifdef SDL_PLATFORM_VITA
 static void SDLCALL SDL_VitaTouchMouseDeviceChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
 {
     SDL_Mouse *mouse = (SDL_Mouse *)userdata;
@@ -133,7 +133,7 @@ static void SDLCALL SDL_MouseTouchEventsChanged(void *userdata, const char *name
     SDL_Mouse *mouse = (SDL_Mouse *)userdata;
     SDL_bool default_value;
 
-#if defined(__ANDROID__) || (defined(__IOS__) && !defined(__TVOS__))
+#if defined(SDL_PLATFORM_ANDROID) || (defined(SDL_PLATFORM_IOS) && !defined(SDL_PLATFORM_TVOS))
     default_value = SDL_TRUE;
 #else
     default_value = SDL_FALSE;
@@ -188,7 +188,7 @@ int SDL_PreInitMouse(void)
     SDL_AddHintCallback(SDL_HINT_TOUCH_MOUSE_EVENTS,
                         SDL_TouchMouseEventsChanged, mouse);
 
-#ifdef __vita__
+#ifdef SDL_PLATFORM_VITA
     SDL_AddHintCallback(SDL_HINT_VITA_TOUCH_MOUSE_DEVICE,
                         SDL_VitaTouchMouseDeviceChanged, mouse);
 #endif
@@ -438,7 +438,7 @@ static float CalculateSystemScale(SDL_Mouse *mouse, SDL_Window *window, const fl
             scale = v[i + 1] + (coef * (v[i + 3] - v[i + 1]));
         }
     }
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
     {
         /* On Windows the mouse speed is affected by the content scale */
         SDL_VideoDisplay *display;
@@ -1209,7 +1209,7 @@ int SDL_CaptureMouse(SDL_bool enabled)
         return SDL_Unsupported();
     }
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
     /* Windows mouse capture is tied to the current thread, and must be called
      * from the thread that created the window being captured. Since we update
      * the mouse capture state from the event processing, any application state
@@ -1218,7 +1218,7 @@ int SDL_CaptureMouse(SDL_bool enabled)
     if (!SDL_OnVideoThread()) {
         return SDL_SetError("SDL_CaptureMouse() must be called on the main thread");
     }
-#endif /* defined(__WIN32__) || defined(__WINGDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK) */
 
     if (enabled && SDL_GetKeyboardFocus() == NULL) {
         return SDL_SetError("No window has focus");
@@ -1238,12 +1238,12 @@ SDL_Cursor *SDL_CreateCursor(const Uint8 *data, const Uint8 *mask, int w, int h,
     const Uint32 black = 0xFF000000;
     const Uint32 white = 0xFFFFFFFF;
     const Uint32 transparent = 0x00000000;
-#if defined(__WIN32__)
+#if defined(SDL_PLATFORM_WIN32)
     /* Only Windows backend supports inverted pixels in mono cursors. */
     const Uint32 inverted = 0x00FFFFFF;
 #else
     const Uint32 inverted = 0xFF000000;
-#endif /* defined(__WIN32__) */
+#endif /* defined(SDL_PLATFORM_WIN32) */
 
     /* Make sure the width is a multiple of 8 */
     w = ((w + 7) & ~7);

src/events/SDL_mouse_c.h

@@ -98,7 +98,7 @@ typedef struct
     SDL_bool touch_mouse_events;
     SDL_bool mouse_touch_events;
     SDL_bool was_touch_mouse_events; /* Was a touch-mouse event pending? */
-#ifdef __vita__
+#ifdef SDL_PLATFORM_VITA
     Uint8 vita_touch_mouse_device;
 #endif
     SDL_bool auto_capture;

src/events/SDL_pen.c

@@ -1053,7 +1053,7 @@ int SDL_PenModifyForWacomID(SDL_Pen *pen, Uint32 wacom_devicetype_id, Uint32 *ax
     wacom_devicetype_id = PEN_WACOM_ID_INVALID; /* force detection to fail */
 #endif
 
-#if defined(__LINUX__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#if defined(SDL_PLATFORM_LINUX) || defined(SDL_PLATFORM_FREEBSD) || defined(SDL_PLATFORM_NETBSD) || defined(SDL_PLATFORM_OPENBSD)
     /* According to Ping Cheng, the curent Wacom for Linux maintainer, device IDs on Linux
        squeeze a "0" nibble after the 3rd (least significant) nibble.
        This may also affect the *BSDs, so they are heuristically included here.

src/events/SDL_touch.c

@@ -255,7 +255,7 @@ int SDL_SendTouch(Uint64 timestamp, SDL_TouchID id, SDL_FingerID fingerid, SDL_W
     /* SDL_HINT_TOUCH_MOUSE_EVENTS: controlling whether touch events should generate synthetic mouse events */
     /* SDL_HINT_VITA_TOUCH_MOUSE_DEVICE: controlling which touchpad should generate synthetic mouse events, PSVita-only */
     {
-#ifdef __vita__
+#ifdef SDL_PLATFORM_VITA
         if (mouse->touch_mouse_events && ((mouse->vita_touch_mouse_device == id) || (mouse->vita_touch_mouse_device == 2))) {
 #else
         if (mouse->touch_mouse_events) {

src/file/SDL_rwops.c

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__WIN32__) || defined(__GDK__) || defined(__WINRT__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) || defined(SDL_PLATFORM_WINRT)
 #include "../core/windows/SDL_windows.h"
 #endif
 
@@ -35,19 +35,19 @@
    data sources.  It can easily be extended to files, memory, etc.
 */
 
-#ifdef __APPLE__
+#ifdef SDL_PLATFORM_APPLE
 #include "cocoa/SDL_rwopsbundlesupport.h"
-#endif /* __APPLE__ */
+#endif /* SDL_PLATFORM_APPLE */
 
-#ifdef __3DS__
+#ifdef SDL_PLATFORM_3DS
 #include "n3ds/SDL_rwopsromfs.h"
-#endif /* __3DS__ */
+#endif /* SDL_PLATFORM_3DS */
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 #include "../core/android/SDL_android.h"
 #endif
 
-#if defined(__WIN32__) || defined(__GDK__) || defined(__WINRT__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) || defined(SDL_PLATFORM_WINRT)
 
 /* Functions to read/write Win32 API file pointers */
 #ifndef INVALID_SET_FILE_POINTER
@@ -58,7 +58,7 @@
 
 static int SDLCALL windows_file_open(SDL_RWops *context, const char *filename, const char *mode)
 {
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__) && !defined(__WINRT__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES) && !defined(SDL_PLATFORM_WINRT)
     UINT old_error_mode;
 #endif
     HANDLE h;
@@ -94,7 +94,7 @@ static int SDLCALL windows_file_open(SDL_RWops *context, const char *filename, c
     if (!context->hidden.windowsio.buffer.data) {
         return -1;
     }
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__) && !defined(__WINRT__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES) && !defined(SDL_PLATFORM_WINRT)
     /* Do not open a dialog box if failure */
     old_error_mode =
         SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS);
@@ -102,7 +102,7 @@ static int SDLCALL windows_file_open(SDL_RWops *context, const char *filename, c
 
     {
         LPTSTR tstr = WIN_UTF8ToString(filename);
-#if defined(__WINRT__)
+#if defined(SDL_PLATFORM_WINRT)
         CREATEFILE2_EXTENDED_PARAMETERS extparams;
         SDL_zero(extparams);
         extparams.dwSize = sizeof(extparams);
@@ -124,7 +124,7 @@ static int SDLCALL windows_file_open(SDL_RWops *context, const char *filename, c
         SDL_free(tstr);
     }
 
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__) && !defined(__WINRT__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES) && !defined(SDL_PLATFORM_WINRT)
     /* restore old behavior */
     SetErrorMode(old_error_mode);
 #endif
@@ -274,9 +274,9 @@ static int SDLCALL windows_file_close(SDL_RWops *context)
     SDL_DestroyRW(context);
     return 0;
 }
-#endif /* defined(__WIN32__) || defined(__GDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) */
 
-#if defined(HAVE_STDIO_H) && !(defined(__WIN32__) || defined(__GDK__))
+#if defined(HAVE_STDIO_H) && !(defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK))
 
 /* Functions to read/write stdio file pointers. Not used for windows. */
 
@@ -400,7 +400,7 @@ static SDL_RWops *SDL_RWFromFP(void *fp, SDL_bool autoclose)
     }
     return rwops;
 }
-#endif /* !HAVE_STDIO_H && !(__WIN32__ || __GDK__) */
+#endif /* !HAVE_STDIO_H && !(SDL_PLATFORM_WIN32 || SDL_PLATFORM_GDK) */
 
 /* Functions to read/write memory pointers */
 
@@ -466,7 +466,7 @@ SDL_RWops *SDL_RWFromFile(const char *file, const char *mode)
         SDL_SetError("SDL_RWFromFile(): No file or no mode specified");
         return NULL;
     }
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 #ifdef HAVE_STDIO_H
     /* Try to open the file on the filesystem first */
     if (*file == '/') {
@@ -510,7 +510,7 @@ SDL_RWops *SDL_RWFromFile(const char *file, const char *mode)
     rwops->close = Android_JNI_FileClose;
     rwops->type = SDL_RWOPS_JNIFILE;
 
-#elif defined(__WIN32__) || defined(__GDK__) || defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_GDK) || defined(SDL_PLATFORM_WINRT)
     rwops = SDL_CreateRW();
     if (!rwops) {
         return NULL; /* SDL_SetError already setup by SDL_CreateRW() */
@@ -528,12 +528,12 @@ SDL_RWops *SDL_RWFromFile(const char *file, const char *mode)
     rwops->type = SDL_RWOPS_WINFILE;
 #elif defined(HAVE_STDIO_H)
     {
-#if defined(__APPLE__)
+#if defined(SDL_PLATFORM_APPLE)
         FILE *fp = SDL_OpenFPFromBundleOrFallback(file, mode);
-#elif defined(__WINRT__)
+#elif defined(SDL_PLATFORM_WINRT)
         FILE *fp = NULL;
         fopen_s(&fp, file, mode);
-#elif defined(__3DS__)
+#elif defined(SDL_PLATFORM_3DS)
         FILE *fp = N3DS_FileOpen(file, mode);
 #else
         FILE *fp = fopen(file, mode);

src/file/cocoa/SDL_rwopsbundlesupport.h

@@ -19,7 +19,7 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
-#ifdef __APPLE__
+#ifdef SDL_PLATFORM_APPLE
 
 #include <stdio.h>
 

src/file/cocoa/SDL_rwopsbundlesupport.m

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#ifdef __APPLE__
+#ifdef SDL_PLATFORM_APPLE
 #import <Foundation/Foundation.h>
 
 #include "SDL_rwopsbundlesupport.h"
@@ -62,4 +62,4 @@ FILE *SDL_OpenFPFromBundleOrFallback(const char *file, const char *mode)
     }
 }
 
-#endif /* __APPLE__ */
+#endif /* SDL_PLATFORM_APPLE */

src/filesystem/unix/SDL_sysfilesystem.c

@@ -35,7 +35,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#if defined(__FREEBSD__) || defined(__OPENBSD__)
+#if defined(SDL_PLATFORM_FREEBSD) || defined(SDL_PLATFORM_OPENBSD)
 #include <sys/sysctl.h>
 #endif
 
@@ -68,7 +68,7 @@ static char *readSymLink(const char *path)
     return NULL;
 }
 
-#ifdef __OPENBSD__
+#ifdef SDL_PLATFORM_OPENBSD
 static char *search_path_for_binary(const char *bin)
 {
     char *envr = SDL_getenv("PATH");
@@ -122,7 +122,7 @@ char *SDL_GetBasePath(void)
 {
     char *retval = NULL;
 
-#ifdef __FREEBSD__
+#ifdef SDL_PLATFORM_FREEBSD
     char fullpath[PATH_MAX];
     size_t buflen = sizeof(fullpath);
     const int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
@@ -133,7 +133,7 @@ char *SDL_GetBasePath(void)
         }
     }
 #endif
-#ifdef __OPENBSD__
+#ifdef SDL_PLATFORM_OPENBSD
     /* Please note that this will fail if the process was launched with a relative path and $PWD + the cwd have changed, or argv is altered. So don't do that. Or add a new sysctl to OpenBSD. */
     char **cmdline;
     size_t len;
@@ -196,11 +196,11 @@ char *SDL_GetBasePath(void)
         /* !!! FIXME: after 2.0.6 ships, let's delete this code and just
                       use the /proc/%llu version. There's no reason to have
                       two copies of this plus all the #ifdefs. --ryan. */
-#ifdef __FREEBSD__
+#ifdef SDL_PLATFORM_FREEBSD
         retval = readSymLink("/proc/curproc/file");
-#elif defined(__NETBSD__)
+#elif defined(SDL_PLATFORM_NETBSD)
         retval = readSymLink("/proc/curproc/exe");
-#elif defined(__SOLARIS__)
+#elif defined(SDL_PLATFORM_SOLARIS)
         retval = readSymLink("/proc/self/path/a.out");
 #else
         retval = readSymLink("/proc/self/exe"); /* linux. */
@@ -217,7 +217,7 @@ char *SDL_GetBasePath(void)
 #endif
     }
 
-#ifdef __SOLARIS__  /* try this as a fallback if /proc didn't pan out */
+#ifdef SDL_PLATFORM_SOLARIS  /* try this as a fallback if /proc didn't pan out */
     if (!retval) {
         const char *path = getexecname();
         if ((path) && (path[0] == '/')) { /* must be absolute path... */

src/filesystem/winrt/SDL_sysfilesystem.cpp

@@ -23,7 +23,7 @@
 /* TODO, WinRT: remove the need to compile this with C++/CX (/ZW) extensions, and if possible, without C++ at all
  */
 
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
 
 extern "C" {
 #include "../../core/windows/SDL_windows.h"
@@ -236,4 +236,4 @@ char *SDL_GetUserFolder(SDL_Folder folder)
     return NULL;
 }
 
-#endif /* __WINRT__ */
+#endif /* SDL_PLATFORM_WINRT */

src/hidapi/SDL_hidapi.c

@@ -39,11 +39,11 @@
 
 #ifndef SDL_HIDAPI_DISABLED
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 #include "../core/windows/SDL_windows.h"
 #endif
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
 #include <CoreFoundation/CoreFoundation.h>
 #include <mach/mach.h>
 #include <IOKit/IOKitLib.h>
@@ -100,7 +100,7 @@ static struct
     SDL_bool m_bCanGetNotifications;
     Uint64 m_unLastDetect;
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
     SDL_ThreadID m_nThreadID;
     WNDCLASSEXA m_wndClass;
     HWND m_hwndMsg;
@@ -108,7 +108,7 @@ static struct
     double m_flLastWin32MessageCheck;
 #endif
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     IONotificationPortRef m_notificationPort;
     mach_port_t m_notificationMach;
 #endif
@@ -120,7 +120,7 @@ static struct
 #endif
 } SDL_HIDAPI_discovery;
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 struct _DEV_BROADCAST_HDR
 {
     DWORD dbch_size;
@@ -166,9 +166,9 @@ static LRESULT CALLBACK ControllerWndProc(HWND hwnd, UINT message, WPARAM wParam
 
     return DefWindowProc(hwnd, message, wParam, lParam);
 }
-#endif /* defined(__WIN32__) || defined(__WINGDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK) */
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
 static void CallbackIOServiceFunc(void *context, io_iterator_t portIterator)
 {
     /* Must drain the iterator, or we won't receive new notifications */
@@ -178,7 +178,7 @@ static void CallbackIOServiceFunc(void *context, io_iterator_t portIterator)
         ++SDL_HIDAPI_discovery.m_unDeviceChangeCounter;
     }
 }
-#endif /* __MACOS__ */
+#endif /* SDL_PLATFORM_MACOS */
 
 #ifdef HAVE_INOTIFY
 #ifdef HAVE_INOTIFY_INIT1
@@ -229,7 +229,7 @@ static void HIDAPI_InitializeDiscovery(void)
     SDL_HIDAPI_discovery.m_bCanGetNotifications = SDL_FALSE;
     SDL_HIDAPI_discovery.m_unLastDetect = 0;
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
     SDL_HIDAPI_discovery.m_nThreadID = SDL_GetCurrentThreadID();
 
     SDL_zero(SDL_HIDAPI_discovery.m_wndClass);
@@ -256,9 +256,9 @@ static void HIDAPI_InitializeDiscovery(void)
         SDL_HIDAPI_discovery.m_hNotify = RegisterDeviceNotification(SDL_HIDAPI_discovery.m_hwndMsg, &devBroadcast, DEVICE_NOTIFY_WINDOW_HANDLE | DEVICE_NOTIFY_ALL_INTERFACE_CLASSES);
         SDL_HIDAPI_discovery.m_bCanGetNotifications = (SDL_HIDAPI_discovery.m_hNotify != 0);
     }
-#endif /* defined(__WIN32__) || defined(__WINGDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK) */
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     SDL_HIDAPI_discovery.m_notificationPort = IONotificationPortCreate(kIOMainPortDefault);
     if (SDL_HIDAPI_discovery.m_notificationPort) {
         {
@@ -308,7 +308,7 @@ static void HIDAPI_InitializeDiscovery(void)
 
     SDL_HIDAPI_discovery.m_bCanGetNotifications = (SDL_HIDAPI_discovery.m_notificationMach != MACH_PORT_NULL);
 
-#endif /* __MACOS__ */
+#endif /* SDL_PLATFORM_MACOS */
 
 #ifdef SDL_USE_LIBUDEV
     if (linux_enumeration_method == ENUMERATION_LIBUDEV) {
@@ -377,7 +377,7 @@ static void HIDAPI_UpdateDiscovery(void)
         return;
     }
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 #if 0 /* just let the usual SDL_PumpEvents loop dispatch these, fixing bug 4286. --ryan. */
     /* We'll only get messages on the same thread that created the window */
     if (SDL_GetCurrentThreadID() == SDL_HIDAPI_discovery.m_nThreadID) {
@@ -390,9 +390,9 @@ static void HIDAPI_UpdateDiscovery(void)
         }
     }
 #endif
-#endif /* defined(__WIN32__) || defined(__WINGDK__) */
+#endif /* defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK) */
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     if (SDL_HIDAPI_discovery.m_notificationPort) {
         struct
         {
@@ -484,7 +484,7 @@ static void HIDAPI_ShutdownDiscovery(void)
         return;
     }
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
     if (SDL_HIDAPI_discovery.m_hNotify) {
         UnregisterDeviceNotification(SDL_HIDAPI_discovery.m_hNotify);
     }
@@ -496,7 +496,7 @@ static void HIDAPI_ShutdownDiscovery(void)
     UnregisterClassA(SDL_HIDAPI_discovery.m_wndClass.lpszClassName, SDL_HIDAPI_discovery.m_wndClass.hInstance);
 #endif
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     if (SDL_HIDAPI_discovery.m_notificationPort) {
         IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
     }
@@ -571,17 +571,17 @@ typedef struct PLATFORM_hid_device_ PLATFORM_hid_device;
 #define read_thread                  PLATFORM_read_thread
 #define return_data                  PLATFORM_return_data
 
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
 #include "SDL_hidapi_linux.h"
-#elif defined(__NETBSD__)
+#elif defined(SDL_PLATFORM_NETBSD)
 #include "SDL_hidapi_netbsd.h"
-#elif defined(__MACOS__)
+#elif defined(SDL_PLATFORM_MACOS)
 #include "SDL_hidapi_mac.h"
-#elif defined(__WINDOWS__) || defined(__WINGDK__)
+#elif defined(SDL_PLATFORM_WINDOWS) || defined(SDL_PLATFORM_WINGDK)
 #include "SDL_hidapi_windows.h"
-#elif defined(__ANDROID__)
+#elif defined(SDL_PLATFORM_ANDROID)
 #include "SDL_hidapi_android.h"
-#elif defined(__IOS__) || defined(__TVOS__)
+#elif defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS)
 #include "SDL_hidapi_ios.h"
 #endif
 
@@ -1099,7 +1099,7 @@ SDL_bool SDL_HIDAPI_ShouldIgnoreDevice(int bus, Uint16 vendor_id, Uint16 product
         if (vendor_id == USB_VENDOR_VALVE) {
             /* Ignore the mouse/keyboard interface on Steam Controllers */
             if (
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
                 /* Check the usage page and usage on both USB and Bluetooth */
 #else
                 /* Only check the usage page and usage on USB */
@@ -1232,7 +1232,7 @@ int SDL_hid_init(void)
 
 #ifdef HAVE_PLATFORM_BACKEND
     ++attempts;
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
     udev_ctx = SDL_UDEV_GetUdevSyms();
 #endif /* __LINUX __ */
     if (udev_ctx && PLATFORM_hid_init() == 0) {
@@ -1244,7 +1244,7 @@ int SDL_hid_init(void)
         return -1;
     }
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     hid_darwin_set_open_exclusive(0);
 #endif
 
@@ -1273,7 +1273,7 @@ int SDL_hid_exit(void)
     if (udev_ctx) {
         result |= PLATFORM_hid_exit();
     }
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
     SDL_UDEV_ReleaseUdevSyms();
 #endif /* __LINUX __ */
 #endif /* HAVE_PLATFORM_BACKEND */
@@ -1688,7 +1688,7 @@ int SDL_hid_get_report_descriptor(SDL_hid_device *device, unsigned char *buf, si
 
 void SDL_hid_ble_scan(SDL_bool active)
 {
-#if !defined(SDL_HIDAPI_DISABLED) && (defined(__IOS__) || defined(__TVOS__))
+#if !defined(SDL_HIDAPI_DISABLED) && (defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS))
     extern void hid_ble_scan(int bStart);
     hid_ble_scan(active);
 #endif

src/hidapi/SDL_hidapi_libusb.h

@@ -76,7 +76,7 @@
 #define wcsdup          SDL_wcsdup
 
 
-#ifndef __FreeBSD__
+#ifndef SDL_PLATFORM_FREEBSD
 /* this is awkwardly inlined, so we need to re-implement it here
  * so we can override the libusb_control_transfer call */
 static int SDL_libusb_get_string_descriptor(libusb_device_handle *dev,
@@ -87,7 +87,7 @@ static int SDL_libusb_get_string_descriptor(libusb_device_handle *dev,
                                    data, (uint16_t)length, 1000); /* Endpoint 0 IN */
 }
 #define libusb_get_string_descriptor SDL_libusb_get_string_descriptor
-#endif /* __FreeBSD__ */
+#endif /* SDL_PLATFORM_FREEBSD */
 
 #define HIDAPI_THREAD_MODEL_INCLUDE "hidapi_thread_sdl.h"
 #ifndef LIBUSB_API_VERSION

src/hidapi/ios/hid.m

@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if defined(__IOS__) || defined(__TVOS__)
+#if defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS)
 
 #ifndef SDL_HIDAPI_DISABLED
 
@@ -1034,4 +1034,4 @@ HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *dev)
 
 #endif /* !SDL_HIDAPI_DISABLED */
 
-#endif /* __IOS__ || __TVOS__ */
+#endif /* SDL_PLATFORM_IOS || SDL_PLATFORM_TVOS */

src/joystick/SDL_gamepad.c

@@ -34,7 +34,7 @@
 #include "../events/SDL_events_c.h"
 
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 #endif
 
 /* Many gamepads turn the center button into an instantaneous button press */
@@ -582,7 +582,7 @@ static void PopMappingChangeTracking(void)
     SDL_free(tracker);
 }
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
 /*
  * Helper function to guess at a mapping based on the elements reported for this gamepad
  */
@@ -683,7 +683,7 @@ static GamepadMapping_t *SDL_CreateMappingForAndroidGamepad(SDL_JoystickGUID gui
 
     return SDL_PrivateAddMappingForGUID(guid, mapping_string, &existing, SDL_GAMEPAD_MAPPING_PRIORITY_DEFAULT);
 }
-#endif /* __ANDROID__ */
+#endif /* SDL_PLATFORM_ANDROID */
 
 /*
  * Helper function to guess at a mapping for HIDAPI gamepads
@@ -963,7 +963,7 @@ static GamepadMapping_t *SDL_PrivateGetGamepadMappingForGUID(SDL_JoystickGUID gu
         mapping = SDL_CreateMappingForWGIGamepad(guid);
     } else if (SDL_IsJoystickVIRTUAL(guid)) {
         /* We'll pick up a robust mapping in VIRTUAL_JoystickGetGamepadMapping */
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
     } else {
         mapping = SDL_CreateMappingForAndroidGamepad(guid);
 #endif
@@ -1441,7 +1441,7 @@ static char *SDL_PrivateGetGamepadGUIDFromMappingString(const char *pMapping)
         pchGUID[pFirstComma - pMapping] = '\0';
 
         /* Convert old style GUIDs to the new style in 2.0.5 */
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
         if (SDL_strlen(pchGUID) == 32 &&
             SDL_memcmp(&pchGUID[20], "504944564944", 12) == 0) {
             SDL_memcpy(&pchGUID[20], "000000000000", 12);
@@ -1449,7 +1449,7 @@ static char *SDL_PrivateGetGamepadGUIDFromMappingString(const char *pMapping)
             SDL_memcpy(&pchGUID[8], &pchGUID[0], 4);
             SDL_memcpy(&pchGUID[0], "03000000", 8);
         }
-#elif defined(__MACOS__)
+#elif defined(SDL_PLATFORM_MACOS)
         if (SDL_strlen(pchGUID) == 32 &&
             SDL_memcmp(&pchGUID[4], "000000000000", 12) == 0 &&
             SDL_memcmp(&pchGUID[20], "000000000000", 12) == 0) {
@@ -1664,7 +1664,7 @@ static GamepadMapping_t *SDL_PrivateGetGamepadMappingForNameAndGUID(const char *
     SDL_AssertJoysticksLocked();
 
     mapping = SDL_PrivateGetGamepadMappingForGUID(guid, SDL_FALSE);
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
     if (!mapping && name) {
         if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
             /* The Linux driver xpad.c maps the wireless dpad to buttons */
@@ -1674,7 +1674,7 @@ static GamepadMapping_t *SDL_PrivateGetGamepadMappingForNameAndGUID(const char *
                                                    &existing, SDL_GAMEPAD_MAPPING_PRIORITY_DEFAULT);
         }
     }
-#endif /* __LINUX__ */
+#endif /* SDL_PLATFORM_LINUX */
 
     if (!mapping) {
         mapping = s_pDefaultMapping;
@@ -2242,7 +2242,7 @@ static SDL_bool SDL_GetGamepadMappingFilePath(char *path, size_t size)
         return SDL_strlcpy(path, hint, size) < size;
     }
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
     return SDL_snprintf(path, size, "%s/gamepad_map.txt", SDL_AndroidGetInternalStoragePath()) < size;
 #else
     return SDL_FALSE;
@@ -2496,7 +2496,7 @@ SDL_bool SDL_ShouldIgnoreGamepad(const char *name, SDL_JoystickGUID guid)
     Uint16 product;
     Uint16 version;
 
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
     if (SDL_endswith(name, " Motion Sensors")) {
         /* Don't treat the PS3 and PS4 motion controls as a separate gamepad */
         return SDL_TRUE;
@@ -2530,11 +2530,11 @@ SDL_bool SDL_ShouldIgnoreGamepad(const char *name, SDL_JoystickGUID guid)
         /* We shouldn't ignore Steam's virtual gamepad since it's using the hints to filter out the real gamepads so it can remap input for the virtual gamepad */
         /* https://partner.steamgames.com/doc/features/steam_gamepad/steam_input_gamepad_emulation_bestpractices */
         SDL_bool bSteamVirtualGamepad = SDL_FALSE;
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
         bSteamVirtualGamepad = (vendor == USB_VENDOR_VALVE && product == USB_PRODUCT_STEAM_VIRTUAL_GAMEPAD);
-#elif defined(__MACOS__)
+#elif defined(SDL_PLATFORM_MACOS)
         bSteamVirtualGamepad = (vendor == USB_VENDOR_MICROSOFT && product == USB_PRODUCT_XBOX360_WIRED_CONTROLLER && version == 0);
-#elif defined(__WIN32__)
+#elif defined(SDL_PLATFORM_WIN32)
         /* We can't tell on Windows, but Steam will block others in input hooks */
         bSteamVirtualGamepad = SDL_TRUE;
 #endif

src/joystick/SDL_gamepad_db.h

@@ -334,7 +334,7 @@ static const char *s_GamepadMappings[] = {
     "030000004f04000003d0000000000000,run'n'drive,a:b1,b:b2,back:b8,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b7,leftshoulder:a3,leftstick:b10,lefttrigger:b4,leftx:a0,lefty:a1,rightshoulder:a4,rightstick:b11,righttrigger:b5,rightx:a2,righty:a5,start:b9,x:b0,y:b3,",
     "03000000101c0000171c000000000000,uRage Gamepad,a:b2,b:b1,back:b8,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b4,leftstick:b10,lefttrigger:b6,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b11,righttrigger:b7,rightx:a2,righty:a3,start:b9,x:b3,y:b0,",
 #endif
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     "03000000c82d00000090000001000000,8BitDo FC30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b6,leftstick:b13,lefttrigger:a4,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:a5,rightx:a2,righty:a3,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "03000000c82d00001038000000010000,8BitDo FC30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b6,leftstick:b13,lefttrigger:a5,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:a4,rightx:a2,righty:a3,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "03000000c82d00000650000001000000,8BitDo M30 Gamepad,a:b1,b:b0,back:b10,guide:b2,leftshoulder:b6,lefttrigger:a4,leftx:a0,lefty:a1,rightshoulder:b7,righttrigger:a5,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
@@ -470,7 +470,7 @@ static const char *s_GamepadMappings[] = {
     "03000000830500006020000000010000,iBuffalo SNES Controller,a:b1,b:b0,back:b6,dpdown:+a1,dpleft:-a0,dpright:+a0,dpup:-a1,leftshoulder:b4,rightshoulder:b5,start:b7,x:b3,y:b2,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "03000000830500006020000000000000,iBuffalo USB 2-axis 8-button Gamepad,a:b1,b:b0,back:b6,leftshoulder:b4,leftx:a0,lefty:a1,rightshoulder:b5,start:b7,x:b3,y:b2,",
 #endif
-#if defined(SDL_JOYSTICK_LINUX) || defined(__OpenBSD__)
+#if defined(SDL_JOYSTICK_LINUX) || defined(SDL_PLATFORM_OPENBSD)
     "03000000c82d00000090000011010000,8BitDo FC30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b6,leftstick:b13,lefttrigger:a4,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:a5,rightx:a2,righty:a3,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "05000000c82d00001038000000010000,8BitDo FC30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b6,leftstick:b13,lefttrigger:a5,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:a4,rightx:a2,righty:a3,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "05000000c82d00005106000000010000,8BitDo M30 Gamepad,a:b1,b:b0,back:b10,guide:b2,leftshoulder:b6,lefttrigger:a5,leftx:a0,lefty:a1,rightshoulder:b7,righttrigger:a4,start:b11,x:b4,y:b3,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
@@ -775,12 +775,12 @@ static const char *s_GamepadMappings[] = {
     "030000009b2800008000000020020000,raphnet technologies 1-player WUSBMote v2.2,a:b1,b:b4,back:b2,dpdown:b13,dpleft:b14,dpright:b15,dpup:b12,leftshoulder:b6,rightshoulder:b7,start:b3,x:b0,y:b5,",
     "030000009b2800000300000001010000,raphnet.net 4nes4snes v1.5,a:b0,b:b4,back:b2,leftshoulder:b6,leftx:a0,lefty:a1,rightshoulder:b7,start:b3,x:b1,y:b5,",
 #endif
-#ifdef __OpenBSD__
+#ifdef SDL_PLATFORM_OPENBSD
     "030000004c050000c405000000010000,PS4 Controller,a:b1,b:b2,back:b8,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b12,leftshoulder:b4,leftstick:b10,lefttrigger:a3,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b11,righttrigger:a4,rightx:a2,righty:a5,start:b9,x:b0,y:b3,",
     "030000004c050000e60c000000010000,PS5 Controller,a:b1,b:b2,back:b8,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b12,leftshoulder:b4,leftstick:b10,lefttrigger:a3,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b11,righttrigger:a4,rightx:a2,righty:a5,start:b9,x:b0,y:b3,",
     "030000005e0400008e02000010010000,Xbox 360 Controller,a:b0,b:b1,back:b6,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b10,leftshoulder:b4,leftstick:b8,lefttrigger:a2,leftx:a0,lefty:a1~,rightshoulder:b5,rightstick:b9,righttrigger:a5,rightx:a3,righty:a4~,start:b7,x:b2,y:b3,",
 #endif
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
     "05000000c82d000006500000ffff3f00,8BitDo M30 Gamepad,a:b1,b:b0,back:b4,guide:b17,leftshoulder:b9,lefttrigger:a5,leftx:a0,lefty:a1,rightshoulder:b10,righttrigger:a4,start:b6,x:b3,y:b2,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "05000000c82d000051060000ffff3f00,8BitDo M30 Gamepad,a:b1,b:b0,back:b4,guide:b17,leftshoulder:b9,lefttrigger:a4,leftx:a0,lefty:a1,rightshoulder:b10,righttrigger:a5,start:b6,x:b3,y:b2,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",
     "05000000c82d000015900000ffff3f00,8BitDo N30 Pro 2,a:b1,b:b0,back:b4,dpdown:b12,dpleft:b13,dpright:b14,dpup:b11,leftshoulder:b9,leftstick:b7,lefttrigger:a5,leftx:a0,lefty:a1,rightshoulder:b10,rightstick:b8,righttrigger:a4,rightx:a2,righty:a3,start:b6,x:b3,y:b2,hint:!SDL_GAMECONTROLLER_USE_BUTTON_LABELS:=1,",

src/joystick/SDL_joystick.c

@@ -36,7 +36,7 @@
 /* This is included in only one place because it has a large static list of controllers */
 #include "controller_type.h"
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 /* Needed for checking for input remapping programs */
 #include "../core/windows/SDL_windows.h"
 
@@ -70,7 +70,7 @@ static SDL_JoystickDriver *SDL_joystick_drivers[] = {
 #ifdef SDL_JOYSTICK_IOKIT
     &SDL_DARWIN_JoystickDriver,
 #endif
-#if (defined(__MACOS__) || defined(__IOS__) || defined(__TVOS__)) && !defined(SDL_JOYSTICK_DISABLED)
+#if (defined(SDL_PLATFORM_MACOS) || defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS)) && !defined(SDL_JOYSTICK_DISABLED)
     &SDL_IOS_JoystickDriver,
 #endif
 #ifdef SDL_JOYSTICK_ANDROID
@@ -774,7 +774,7 @@ int SDL_GetJoystickInstancePlayerIndex(SDL_JoystickID instance_id)
  */
 static SDL_bool SDL_JoystickAxesCenteredAtZero(SDL_Joystick *joystick)
 {
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
     return SDL_TRUE;
 #else
     /*printf("JOYSTICK '%s' VID/PID 0x%.4x/0x%.4x AXES: %d\n", joystick->name, vendor, product, joystick->naxes);*/
@@ -785,7 +785,7 @@ static SDL_bool SDL_JoystickAxesCenteredAtZero(SDL_Joystick *joystick)
     }
 
     return SDL_VIDPIDInList(SDL_GetJoystickVendor(joystick), SDL_GetJoystickProduct(joystick), &zero_centered_devices);
-#endif /* __WINRT__ */
+#endif /* SDL_PLATFORM_WINRT */
 }
 
 static SDL_bool IsROGAlly(SDL_Joystick *joystick)

src/joystick/SDL_steam_virtual_gamepad.c

@@ -23,7 +23,7 @@
 #include "SDL_joystick_c.h"
 #include "SDL_steam_virtual_gamepad.h"
 
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
 #include "../core/windows/SDL_windows.h"
 #else
 #include <sys/types.h>
@@ -43,7 +43,7 @@ static Uint64 GetFileModificationTime(const char *file)
 {
     Uint64 modification_time = 0;
 
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
     WCHAR *wFile = WIN_UTF8ToStringW(file);
     if (wFile) {
         HANDLE hFile = CreateFileW(wFile, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

src/joystick/apple/SDL_mfijoystick.m

@@ -35,13 +35,13 @@
 #import <CoreMotion/CoreMotion.h>
 #endif
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
 #include <IOKit/hid/IOHIDManager.h>
 #include <AppKit/NSApplication.h>
 #ifndef NSAppKitVersionNumber10_15
 #define NSAppKitVersionNumber10_15 1894
 #endif
-#endif /* __MACOS__ */
+#endif /* SDL_PLATFORM_MACOS */
 
 #ifdef SDL_JOYSTICK_MFI
 #import <GameController/GameController.h>
@@ -68,7 +68,7 @@ static id disconnectObserver = nil;
  * they are only ever used indirectly through objc_msgSend
  */
 @interface GCController (SDL)
-#if defined(__MACOS__) && (__MAC_OS_X_VERSION_MAX_ALLOWED <= 101600)
+#if defined(SDL_PLATFORM_MACOS) && (__MAC_OS_X_VERSION_MAX_ALLOWED <= 101600)
 + (BOOL)supportsHIDDevice:(IOHIDDeviceRef)device;
 #endif
 #if !((__IPHONE_OS_VERSION_MAX_ALLOWED >= 130000) || (__APPLETV_OS_VERSION_MAX_ALLOWED >= 130000) || (__MAC_OS_VERSION_MAX_ALLOWED >= 1500000))
@@ -807,7 +807,7 @@ static int IOS_JoystickInit(void)
         return 0;
     }
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
 #if SDL_HAS_BUILTIN(__builtin_available)
     if (@available(macOS 10.16, *)) {
         /* Continue with initialization on macOS 11+ */
@@ -1960,7 +1960,7 @@ static SDL_bool IOS_JoystickGetGamepadMapping(int device_index, SDL_GamepadMappi
     return SDL_FALSE;
 }
 
-#if defined(SDL_JOYSTICK_MFI) && defined(__MACOS__)
+#if defined(SDL_JOYSTICK_MFI) && defined(SDL_PLATFORM_MACOS)
 SDL_bool IOS_SupportedHIDDevice(IOHIDDeviceRef device)
 {
     if (!SDL_GetHintBoolean(SDL_HINT_JOYSTICK_MFI, SDL_TRUE)) {

src/joystick/bsd/SDL_bsdjoystick.c

@@ -59,7 +59,7 @@
 #include <libusbhid.h>
 #endif
 
-#if defined(__FREEBSD__) || defined(__FreeBSD_kernel__)
+#if defined(SDL_PLATFORM_FREEBSD)
 #include <osreldate.h>
 #if __FreeBSD_kernel_version > 800063
 #include <dev/usb/usb_ioctl.h>
@@ -77,7 +77,7 @@
 #include "../SDL_joystick_c.h"
 #include "../hidapi/SDL_hidapijoystick_c.h"
 
-#if defined(__FREEBSD__) || SDL_HAVE_MACHINE_JOYSTICK_H || defined(__FreeBSD_kernel__) || defined(__DragonFly_)
+#if defined(SDL_PLATFORM_FREEBSD) || SDL_HAVE_MACHINE_JOYSTICK_H || defined(__FreeBSD_kernel__) || defined(__DragonFly_)
 #define SUPPORT_JOY_GAMEPORT
 #endif
 
@@ -85,7 +85,7 @@
 #define MAX_JOY_JOYS  2
 #define MAX_JOYS      (MAX_UHID_JOYS + MAX_JOY_JOYS)
 
-#ifdef __OpenBSD__
+#ifdef SDL_PLATFORM_OPENBSD
 
 #define HUG_DPAD_UP    0x90
 #define HUG_DPAD_DOWN  0x91
@@ -101,10 +101,10 @@
 
 struct report
 {
-#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 900000) || \
+#if defined(SDL_PLATFORM_FREEBSD) && (__FreeBSD_kernel_version > 900000) || \
     defined(__DragonFly__)
     void *buf; /* Buffer */
-#elif defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063)
+#elif defined(SDL_PLATFORM_FREEBSD) && (__FreeBSD_kernel_version > 800063)
     struct usb_gen_descriptor *buf; /* Buffer */
 #else
     struct usb_ctl_report *buf; /* Buffer */
@@ -187,10 +187,10 @@ static void report_free(struct report *);
 
 #if defined(USBHID_UCR_DATA) || (defined(__FreeBSD_kernel__) && __FreeBSD_kernel_version <= 800063)
 #define REP_BUF_DATA(rep) ((rep)->buf->ucr_data)
-#elif (defined(__FREEBSD__) && (__FreeBSD_kernel_version > 900000)) || \
+#elif (defined(SDL_PLATFORM_FREEBSD) && (__FreeBSD_kernel_version > 900000)) || \
     defined(__DragonFly__)
 #define REP_BUF_DATA(rep) ((rep)->buf)
-#elif (defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063))
+#elif (defined(SDL_PLATFORM_FREEBSD) && (__FreeBSD_kernel_version > 800063))
 #define REP_BUF_DATA(rep) ((rep)->buf->ugd_data)
 #else
 #define REP_BUF_DATA(rep) ((rep)->buf->data)
@@ -296,7 +296,7 @@ CreateHwData(const char *path)
             goto usberr;
         }
         rep = &hw->inreport;
-#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+#if defined(SDL_PLATFORM_FREEBSD) && (__FreeBSD_kernel_version > 800063) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         rep->rid = hid_get_report_id(fd);
         if (rep->rid < 0) {
 #else
@@ -312,7 +312,7 @@ CreateHwData(const char *path)
                          path);
             goto usberr;
         }
-#if defined(USBHID_NEW) || (defined(__FREEBSD__) && __FreeBSD_kernel_version >= 500111) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+#if defined(USBHID_NEW) || (defined(SDL_PLATFORM_FREEBSD) && __FreeBSD_kernel_version >= 500111) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         hdata = hid_start_parse(hw->repdesc, 1 << hid_input, rep->rid);
 #else
         hdata = hid_start_parse(hw->repdesc, 1 << hid_input);
@@ -336,7 +336,7 @@ CreateHwData(const char *path)
                     if (joyaxe >= 0) {
                         hw->axis_map[joyaxe] = 1;
                     } else if (usage == HUG_HAT_SWITCH
-#ifdef __OpenBSD__
+#ifdef SDL_PLATFORM_OPENBSD
                                || usage == HUG_DPAD_UP
 #endif
                     ) {
@@ -374,7 +374,7 @@ CreateHwData(const char *path)
 
     /* The poll blocks the event thread. */
     fcntl(fd, F_SETFL, O_NONBLOCK);
-#ifdef __NetBSD__
+#ifdef SDL_PLATFORM_NETBSD
     /* Flush pending events */
     if (rep) {
         while (read(fd, REP_BUF_DATA(rep), rep->size) == rep->size)
@@ -487,7 +487,7 @@ static int BSD_JoystickInit(void)
     int i;
 
     for (i = 0; i < MAX_UHID_JOYS; i++) {
-#if defined(__OpenBSD__) && (OpenBSD >= 202105)
+#if defined(SDL_PLATFORM_OPENBSD) && (OpenBSD >= 202105)
         SDL_snprintf(s, SDL_arraysize(s), "/dev/ujoy/%d", i);
 #else
         SDL_snprintf(s, SDL_arraysize(s), "/dev/uhid%d", i);
@@ -612,7 +612,7 @@ static void BSD_JoystickUpdate(SDL_Joystick *joy)
     struct report *rep;
     int nbutton, naxe = -1;
     Sint32 v;
-#ifdef __OpenBSD__
+#ifdef SDL_PLATFORM_OPENBSD
     Sint32 dpad[4] = { 0, 0, 0, 0 };
 #endif
     Uint64 timestamp = SDL_GetTicksNS();
@@ -663,7 +663,7 @@ static void BSD_JoystickUpdate(SDL_Joystick *joy)
     rep = &joy->hwdata->inreport;
 
     while (read(joy->hwdata->fd, REP_BUF_DATA(rep), rep->size) == rep->size) {
-#if defined(USBHID_NEW) || (defined(__FREEBSD__) && __FreeBSD_kernel_version >= 500111) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
+#if defined(USBHID_NEW) || (defined(SDL_PLATFORM_FREEBSD) && __FreeBSD_kernel_version >= 500111) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         hdata = hid_start_parse(joy->hwdata->repdesc, 1 << hid_input, rep->rid);
 #else
         hdata = hid_start_parse(joy->hwdata->repdesc, 1 << hid_input);
@@ -693,7 +693,7 @@ static void BSD_JoystickUpdate(SDL_Joystick *joy)
                                                hatval_to_sdl(v) -
                                                    hitem.logical_minimum);
                     }
-#ifdef __OpenBSD__
+#ifdef SDL_PLATFORM_OPENBSD
                     /* here D-pad directions are reported like separate buttons.
                      * calculate the SDL hat value from the 4 separate values.
                      */
@@ -767,7 +767,7 @@ static int report_alloc(struct report *r, struct report_desc *rd, int repind)
 
 #ifdef __DragonFly__
     len = hid_report_size(rd, repinfo[repind].kind, r->rid);
-#elif defined __FREEBSD__
+#elif defined(SDL_PLATFORM_FREEBSD)
 #if (__FreeBSD_kernel_version >= 460000) || defined(__FreeBSD_kernel__)
 #if (__FreeBSD_kernel_version <= 500111)
     len = hid_report_size(rd, r->rid, repinfo[repind].kind);
@@ -791,7 +791,7 @@ static int report_alloc(struct report *r, struct report_desc *rd, int repind)
     r->size = len;
 
     if (r->size > 0) {
-#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 900000) || defined(__DragonFly__)
+#if defined(SDL_PLATFORM_FREEBSD) && (__FreeBSD_kernel_version > 900000) || defined(__DragonFly__)
         r->buf = SDL_malloc(r->size);
 #else
         r->buf = SDL_malloc(sizeof(*r->buf) - sizeof(REP_BUF_DATA(r)) +

src/joystick/hidapi/SDL_hidapi_luna.c

@@ -32,7 +32,7 @@
 /*#define DEBUG_LUNA_PROTOCOL*/
 
 /* Sending rumble on macOS blocks for a long time and eventually fails */
-#ifndef __MACOS__
+#ifndef SDL_PLATFORM_MACOS
 #define ENABLE_LUNA_BLUETOOTH_RUMBLE
 #endif
 

src/joystick/hidapi/SDL_hidapi_ps3.c

@@ -69,15 +69,15 @@ static SDL_bool HIDAPI_DriverPS3_IsEnabled(void)
 {
     SDL_bool default_value;
 
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     /* This works well on macOS */
     default_value = SDL_TRUE;
-#elif defined(__WINDOWS__)
+#elif defined(SDL_PLATFORM_WINDOWS)
     /* You can't initialize the controller with the stock Windows drivers
      * See https://github.com/ViGEm/DsHidMini as an alternative driver
      */
     default_value = SDL_FALSE;
-#elif defined(__LINUX__)
+#elif defined(SDL_PLATFORM_LINUX)
     /* Linux drivers do a better job of managing the transition between
      * USB and Bluetooth. There are also some quirks in communicating
      * with PS3 controllers that have been implemented in SDL's hidapi

src/joystick/hidapi/SDL_hidapi_steam.c

@@ -347,7 +347,7 @@ static int GetFeatureReport(SDL_hid_device *dev, unsigned char uBuffer[65])
         // On Windows and macOS, BLE devices get 2 copies of the feature report ID, one that is removed by ReadFeatureReport,
         // and one that's included in the buffer we receive. We pad the bytes to read and skip over the report ID
         // if necessary.
-#if defined(__WIN32__) || defined(__MACOS__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_MACOS)
         ++ucBytesToRead;
         ++ucDataStartOffset;
 #endif
@@ -980,13 +980,13 @@ static SDL_bool HIDAPI_DriverSteam_InitDevice(SDL_HIDAPI_Device *device)
     }
     device->context = ctx;
 
-#ifdef __WIN32__
+#ifdef SDL_PLATFORM_WIN32
     if (device->serial) {
         /* We get a garbage serial number on Windows */
         SDL_free(device->serial);
         device->serial = NULL;
     }
-#endif /* __WIN32__ */
+#endif /* SDL_PLATFORM_WIN32 */
 
     HIDAPI_SetDeviceName(device, "Steam Controller");
 

src/joystick/hidapi/SDL_hidapi_wii.c

@@ -454,7 +454,7 @@ static void CheckMotionPlusConnection(SDL_DriverWii_Context *ctx)
 
 static void ActivateMotionPlusWithMode(SDL_DriverWii_Context *ctx, Uint8 mode)
 {
-#ifdef __LINUX__
+#ifdef SDL_PLATFORM_LINUX
     /* Linux drivers maintain a lot of state around the Motion Plus
      * extension, so don't mess with it here.
      */

src/joystick/hidapi/SDL_hidapi_xbox360.c

@@ -80,7 +80,7 @@ static SDL_bool HIDAPI_DriverXbox360_IsSupportedDevice(SDL_HIDAPI_Device *device
         /* This is the chatpad or other input interface, not the Xbox 360 interface */
         return SDL_FALSE;
     }
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     if (vendor_id == USB_VENDOR_MICROSOFT && product_id == USB_PRODUCT_XBOX360_WIRED_CONTROLLER && version == 0) {
         /* This is the Steam Virtual Gamepad, which isn't supported by this driver */
         return SDL_FALSE;
@@ -197,7 +197,7 @@ static SDL_bool HIDAPI_DriverXbox360_OpenJoystick(SDL_HIDAPI_Device *device, SDL
 
 static int HIDAPI_DriverXbox360_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
 {
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     if (SDL_IsJoystickBluetoothXboxOne(device->vendor_id, device->product_id)) {
         Uint8 rumble_packet[] = { 0x03, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00 };
 
@@ -267,7 +267,7 @@ static int HIDAPI_DriverXbox360_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *dev
 static void HIDAPI_DriverXbox360_HandleStatePacket(SDL_Joystick *joystick, SDL_DriverXbox360_Context *ctx, Uint8 *data, int size)
 {
     Sint16 axis;
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     const SDL_bool invert_y_axes = SDL_FALSE;
 #else
     const SDL_bool invert_y_axes = SDL_TRUE;

src/joystick/hidapi/SDL_hidapi_xboxone.c

@@ -35,7 +35,7 @@
 /* Define this if you want to log all packets from the controller */
 /*#define DEBUG_XBOX_PROTOCOL*/
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 #define XBOX_ONE_DRIVER_ACTIVE  1
 #else
 #define XBOX_ONE_DRIVER_ACTIVE  0
@@ -350,7 +350,7 @@ static SDL_bool HIDAPI_DriverXboxOne_IsEnabled(void)
 
 static SDL_bool HIDAPI_DriverXboxOne_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *name, SDL_GamepadType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
 {
-#ifdef __MACOS__
+#ifdef SDL_PLATFORM_MACOS
     /* Wired Xbox One controllers are handled by the 360Controller driver */
     if (!SDL_IsJoystickBluetoothXboxOne(vendor_id, product_id)) {
         return SDL_FALSE;

src/joystick/hidapi/SDL_hidapijoystick.c

@@ -27,7 +27,7 @@
 #include "SDL_hidapi_rumble.h"
 #include "../../SDL_hints_c.h"
 
-#if defined(__WIN32__) || defined(__WINGDK__)
+#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINGDK)
 #include "../windows/SDL_rawinputjoystick_c.h"
 #endif
 
@@ -451,7 +451,7 @@ static void HIDAPI_SetupDeviceDriver(SDL_HIDAPI_Device *device, SDL_bool *remove
             /* Wait a little bit for the device to initialize */
             SDL_Delay(10);
 
-#ifdef __ANDROID__
+#ifdef SDL_PLATFORM_ANDROID
             /* On Android we need to leave joysticks unlocked because it calls
              * out to the main thread for permissions and the main thread can
              * be in the process of handling controller input.

src/joystick/windows/SDL_rawinputjoystick.c

@@ -686,7 +686,7 @@ static void RAWINPUT_InitWindowsGamingInput(RAWINPUT_DeviceContext *ctx)
             typedef HRESULT(WINAPI * WindowsCreateStringReference_t)(PCWSTR sourceString, UINT32 length, HSTRING_HEADER * hstringHeader, HSTRING * string);
             typedef HRESULT(WINAPI * RoGetActivationFactory_t)(HSTRING activatableClassId, REFIID iid, void **factory);
 
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
             WindowsCreateStringReference_t WindowsCreateStringReferenceFunc = WindowsCreateStringReference;
             RoGetActivationFactory_t RoGetActivationFactoryFunc = RoGetActivationFactory;
 #else

src/joystick/windows/SDL_windows_gaming_input.c

@@ -603,7 +603,7 @@ static int WGI_JoystickInit(void)
         return SDL_SetError("RoInitialize() failed");
     }
 
-#ifdef __WINRT__
+#ifdef SDL_PLATFORM_WINRT
     wgi.CoIncrementMTAUsage = CoIncrementMTAUsage;
     wgi.RoGetActivationFactory = RoGetActivationFactory;
     wgi.WindowsCreateStringReference = WindowsCreateStringReference;
@@ -617,9 +617,9 @@ static int WGI_JoystickInit(void)
     RESOLVE(WindowsDeleteString);
     RESOLVE(WindowsGetStringRawBuffer);
 #undef RESOLVE
-#endif /* __WINRT__ */
+#endif /* SDL_PLATFORM_WINRT */
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
     {
         /* There seems to be a bug in Windows where a dependency of WGI can be unloaded from memory prior to WGI itself.
          * This results in Windows_Gaming_Input!GameController::~GameController() invoking an unloaded DLL and crashing.

src/joystick/windows/SDL_windowsjoystick.c

@@ -35,7 +35,7 @@
 #include "../SDL_sysjoystick.h"
 #include "../../thread/SDL_systhread.h"
 #include "../../core/windows/SDL_windows.h"
-#if !defined(__WINRT__) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
 #include <dbt.h>
 #endif
 
@@ -152,7 +152,7 @@ static GUID GUID_DEVINTERFACE_HID = { 0x4D1E55B2L, 0xF16F, 0x11CF, { 0x88, 0xCB,
 
 JoyStick_DeviceData *SYS_Joystick; /* array to hold joystick ID values */
 
-#if !defined(__WINRT__) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
 static HMODULE cfgmgr32_lib_handle;
 static CM_Register_NotificationFunc CM_Register_Notification;
 static CM_Unregister_NotificationFunc CM_Unregister_Notification;
@@ -338,11 +338,11 @@ static SDL_bool SDL_WaitForDeviceNotification(SDL_DeviceNotificationData *data,
     return (lastret != -1);
 }
 
-#endif /* !defined(__WINRT__) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__) */
+#endif /* !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES) */
 
-#ifndef __WINRT__
+#ifndef SDL_PLATFORM_WINRT
 
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
 static SDL_DeviceNotificationData s_notification_data;
 #endif
 
@@ -354,7 +354,7 @@ static int SDLCALL SDL_JoystickThread(void *_data)
     SDL_zeroa(bOpenedXInputDevices);
 #endif
 
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
     if (SDL_CreateDeviceNotification(&s_notification_data) < 0) {
         return -1;
     }
@@ -362,7 +362,7 @@ static int SDLCALL SDL_JoystickThread(void *_data)
 
     SDL_LockMutex(s_mutexJoyStickEnum);
     while (s_bJoystickThreadQuit == SDL_FALSE) {
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
         if (SDL_WaitForDeviceNotification(&s_notification_data, s_mutexJoyStickEnum) == SDL_FALSE) {
 #else
         {
@@ -392,7 +392,7 @@ static int SDLCALL SDL_JoystickThread(void *_data)
 
     SDL_UnlockMutex(s_mutexJoyStickEnum);
 
-#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
     SDL_CleanupDeviceNotification(&s_notification_data);
 #endif
 
@@ -447,7 +447,7 @@ static void SDL_StopJoystickThread(void)
     s_joystickThread = NULL;
 }
 
-#endif /* !defined(__WINRT__) */
+#endif /* !defined(SDL_PLATFORM_WINRT) */
 
 void WINDOWS_AddJoystickDevice(JoyStick_DeviceData *device)
 {
@@ -480,7 +480,7 @@ static int WINDOWS_JoystickInit(void)
 
     WINDOWS_JoystickDetect();
 
-#if !defined(__WINRT__) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
     SDL_CreateDeviceNotificationFunc();
 
     s_bJoystickThread = SDL_GetHintBoolean(SDL_HINT_JOYSTICK_THREAD, SDL_FALSE);
@@ -495,7 +495,7 @@ static int WINDOWS_JoystickInit(void)
     }
 #endif
 
-#if defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     /* On Xbox, force create the joystick thread for device detection (since other methods don't work */
     s_bJoystickThread = SDL_TRUE;
     if (SDL_StartJoystickThread() < 0) {
@@ -766,7 +766,7 @@ void WINDOWS_JoystickQuit(void)
     }
     SYS_Joystick = NULL;
 
-#if !defined(__WINRT__) && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
+#if !defined(SDL_PLATFORM_WINRT) && !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
     if (s_bJoystickThread) {
         SDL_StopJoystickThread();
     } else {
@@ -776,7 +776,7 @@ void WINDOWS_JoystickQuit(void)
     SDL_CleanupDeviceNotificationFunc();
 #endif
 
-#if defined(__XBOXONE__) || defined(__XBOXSERIES__)
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
     if (s_bJoystickThread) {
         SDL_StopJoystickThread();
     }