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

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'
 #