Fix uses of undefined macro identifiers (-Wundef)

* Fix -Wundef warnings due to use of unguarded SDL_LOADSO_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_WINDOWS

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_ANDROID

* Fix -Wundef warnings due to use of unguarded SDL_LOADSO_DUMMY

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_COCOA

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_UIKIT

* Fix -Wundef warnings due to use of unguarded SDL_TIMERS_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_EVENTS_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_TIMER_DUMMY

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_HAPTIC_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_SENSOR_DISABLED

* Fix -Wundef warnings due to use of unguarded __ANDROID__

* Fix -Wundef warnings due to use of unguarded __IOS__

* Fix -Wundef warnings due to use of unguarded EMULATE_CAS

* Fix -Wundef warnings due to use of unguarded SDL_ATOMIC_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_THREADS_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_SNDIO

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_NETBSD

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_WASAPI

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_DSOUND

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_HAIKU

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_COREAUDIO

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_AAUDIO

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_OPENSLES

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_ANDROID

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_PS2

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_PSP

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_VITA

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_N3DS

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_EMSCRIPTEN

* Fix -Wundef warnings due to use of unguarded SDL_NEON_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_ALTIVEC_BLITTERS

* Fix -Wundef warnings due to use of unguarded __VITA__

* Fix -Wundef warnings due to use of unguarded __3DS__

* Fix -Wundef warnings due to use of unguarded SDL_DYNAPI_PROC_NO_VARARGS

* Fix -Wundef warnings due to use of unguarded __APPLE__

* Fix -Wundef warnings due to use of unguarded __WINRT__

* Fix -Wundef warnings due to use of unguarded SDL_HIDAPI_DISABLED

* Fix -Wundef warnings due to use of unguarded __TVOS__

* Fix -Wundef warnings due to use of unguarded HAVE_DRIVER_BACKEND

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_XINPUT

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_WGI

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_DINPUT

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_MFI

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_EMSCRIPTEN

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_PS2

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_PSP

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_VITA

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_N3DS

* Fix -Wundef warnings due to use of unguarded __MACOS__

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_D3D

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_WINRT

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_RPI

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_VITA_PVR_OGL

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_VIVANTE

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_D3D11

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_D3D12

* Fix -Wundef warnings due to use of unguarded SDL_RENDER_DISABLED

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_METAL

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_PS2

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_PSP

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_VITA_GXM

* Fix -Wundef warnings due to use of unguarded SDL_ARM_SIMD_BLITTERS

* Fix -Wundef warnings due to use of unguarded SDL_ARM_NEON_BLITTERS

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_HAIKU

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_PS2

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_PSP

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_VITA

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_N3DS

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_KMSDRM

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_RISCOS

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_EMSCRIPTEN

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_NGAGE

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_METAL

* Fix -Wundef warnings due to use of unguarded SDL_LSX_INTRINSICS

* Fix -Wundef warnings due to use of unguarded HAVE_PTHREAD_NP_H

* Fix -Wundef warnings due to use of unguarded __RISCOS__

* Fix -Wundef warnings due to use of unguarded FAKE_RECURSIVE_MUTEX

* Fix -Wundef warnings due to use of unguarded USE_POSIX_SPAWN

* textureData is only needed when SDL is built with YUV support

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_ALSA

* Fix -Wundef warnings due to use of unguarded SDL_SSE3_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_SSE4_2_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_SSE4_1_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_AVX512F_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_SSE2_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_AVX_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_AVX2_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_SSE_INTRINSICS

* Fix -Wundef warnings due to use of unguarded SDL_MMX_INTRINSICS

* Fix -Wundef warnings due to use of unguarded HAVE_CLOCK_GETTIME

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_DISK

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_DUMMY

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_DUMMY

* Fix -Wundef warnings due to use of unguarded HAVE_GCC_ATOMICS

* Fix -Wundef warnings due to use of unguarded HAVE_GCC_SYNC_LOCK_TEST_AND_SET

* Fix -Wundef warnings due to use of unguarded SDL_USE_LIBDBUS

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_JACK

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_VIRTUAL

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_LINUX

* Fix -Wundef warnings due to use of unguarded HAVE_LIBC

* Fix -Wundef warnings due to disabling SDL_LIBC

* Fix -Wundef warnings due to use of unguarded HAVE_PLATFORM_BACKEND

* Fix -Wundef warnings due to use of unguarded DEBUG

* Fix -Wundef warnings due to use of unguarded HAVE_LINUX_INPUT_H

* Fix -Werror=unused-variable when building with SDL_LIBC=OFF

* Fix -Wundef warnings due to use of unguqrded SDL_USE_LIBUDEV

* Use SDL alloc functions in libusb/hid.c

* Fix -Wundef warnings due to use of unguarded HAVE_LIBUDEV_H

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_VULKAN

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_OFFSCREEN

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_OGL

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_GLX

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_ES

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_ES2

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_RENDER_OGL_ES2

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_OSS

* Remove SDL_AUDIO_DRIVER_SUNAUDIO reference since it is never set

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_PIPEWIRE

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_PULSEAUDIO

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_XCURSOR

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_XDBE

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_XFIXES

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_XINPUT2

* Fix -Wundef warnings due to use of unguarded #if SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH

* Fix -Wundef warnings due to use of unguarded #if SDL_VIDEO_DRIVER_X11_XRANDR

* Fix -Wundef warnings due to use of unguarded #if SDL_VIDEO_DRIVER_X11_XSCRNSAVER

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_XSHAPE

* Don't call XShape functions when XShape is diabled

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_WAYLAND

* Fix -Wundef warnings due to use of unuarded SDL_VIDEO_DRIVER_X11

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_RISCOS

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_EGL

* Disable array when compiled with SDL_EVENTS=OFF

* Fix -Wundef warnings due to use of unguarded SDL_INPUT_LINUXEV

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_PTHREAD

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_WINDOWS

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_PS2

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_PSP

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_VITA

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_N3DS

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_STDCPP

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_NGAGE

* Fix -Wundef warnings due to use of unguarded __WINDOWS__

* Fix -Wundef warnings due to use of unguarded __WINGDK__

* Fix -Wundef warnings due to use of unguarded __ANDROID__

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_GENERIC_COND_SUFFIX

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_VITA_PIB

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_VITA_PVR

* Fix -Wundef warnings due to use of unguarded SDL_FILE_DISABLED

* Fix -Wundef warnings due to use of unguarded __XBOXONE__

* Fix -Wundef warnings due to use of unguarded __XBOXSERIES__

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_WGL

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_QNX

* Fix -Wundef warnings due to use of unguarded SDL_AUDIO_DRIVER_DISK

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_QNX

* Fix -Wundef warnings due to use of unguarded DEBUG_RAZOR

* Fix -Wundef warnings due to use of unguarded WINAPI_FAMILY_PHONE_APP

* Fix -Wundef warnings due to use of unguarded SDL_MAC_NO_SANDBOX

* Fix -Wundef warnings due to use of unguarded __(IPHONE|APPLETV|MAC)_OS_VERSION_MAX_ALLOWED

* Fix C4090 warning ('function': different 'const' qualifiers)

* ci: use -isystem for include dirs of pspdev toolchain

* cmake: add -Wundef option

* Fix remaining -Wundef warnings due to use of unguarded SDL_VIDEO_VULKAN and SDL_VIDEO_METAL

* Fix -Wundef warnings due to use of unguarded __MACOS__

* DEBUG_CONVERT is guaranteed to be defined in src/audio/SDL_audiocvt.c

* Fix -Wundef warnings due to use of unguarded HAVE_NANOSLEEP

* Fix -Wundef warnings due to use of unguarded HAVE_DXGI_H

* Fix -Wundef warnings due to use of unguarded HAVE_LINUX_INPUT_H

* fix SDL_VIDEO_DRIVER_WAYLAND

* fix SDL_VIDEO_DRIVER_X11

* Fix -Wundef warnings due to use of unguarded HAVE_MMDEVICEAPI_H

* Fix -Wundef warnings due to use of unguarded HAVE_PTHREAD_SETNAME_NP

* Fix -Wundef warnings due to use of unguarded HAVE_PTHREAD_SET_NAME_NP

* Fix -Wundef warnings due to use of unguarded HAVE_SETJMP

* Fix -Wundef warnings due to use of unguarded HAVE_SIGNAL_H

* Fix -Wundef warnings due to use of unguarded HAVE_TPCSHRD_H

* Fix -Wundef warnings due to use of unguarded MACOSX_COREAUDIO

* Fix -Wundef warnings due to use of unguarded SDL_HAPTIC_DINPUT

* Fix -Wundef warnings due to use of unguarded SDL_HAPTIC_IOKIT

* Fix -Wundef warnings due to use of unguarded SDL_HAPTIC_XINPUT

* Fix -Wundef warnings due to use of unguarded SDL_IPHONE_KEYBOARD

* Fix -Wundef warnings due to use of unguarded SDL_JOYSTICK_RAWINPUT

* Fix -Wundef warnings due to use of unguarded SDL_POWER_ANDROID

* Fix -Wundef warnings due to use of unguarded SDL_POWER_EMSCRIPTEN

* Fix -Wundef warnings due to use of unguarded SDL_POWER_HAIKU

* Fix -Wundef warnings due to use of unguarded SDL_POWER_LINUX

* Fix -Wundef warnings due to use of unguarded SDL_POWER_MACOSX

* Fix -Wundef warnings due to use of unguarded SDL_POWER_PSP

* Fix -Wundef warnings due to use of unguarded SDL_POWER_UIKIT

* Fix -Wundef warnings due to use of unguarded SDL_POWER_VITA

* Fix -Wundef warnings due to use of unguarded SDL_POWER_WINDOWS

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_PTHREAD_RECURSIVE_MUTEX

* Fix -Wundef warnings due to use of unguarded SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_VIVANTE_VDK

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_WAYLAND

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_CGL

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_EGL

* Fix -Wundef warnings due to use of unguarded __MACOS__

* Fix -Wundef warnings due to use of unguarded __OpenBSD__

* Fix -Wundef warnings due to use of unguarded __FreeBSD__

* Fix -Wundef warnings due to use of unguarded __MWERKS__

* Fix -Wundef warnings due to use of unguarded __WIN32__

* Fix -Wundef warnings due to use of unguarded SDL_IPHONE_LAUNCHSCREEN

* Fix -Wundef warnings due to use of unguarded SDL_VIDEO_OPENGL_ES2

* Remove unused HAVE_CONST, HAVE_INLINE and HAVE_VOLATILE

* Revert "Use SDL alloc functions in libusb/hid.c"

This reverts commit 847c64b00da12ca08bef9e947eb948e378eeaef8.

* Handle FAKE_RECURSIVE_MUTEX in similar way as SDL2

* Don't use defined in macro

CMakeLists.txt

@@ -561,6 +561,11 @@ if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
     endif()
   endif()
 
+  check_c_compiler_flag(-Wundef HAVE_GCC_WUNDEF)
+  if(HAVE_GCC_WUNDEF)
+    target_compile_options(sdl-global-options INTERFACE "-Wundef")
+  endif()
+
   check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
   if(HAVE_GCC_NO_STRICT_ALIASING)
     target_compile_options(sdl-global-options INTERFACE "-fno-strict-aliasing")
@@ -641,13 +646,15 @@ if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
         __sync_fetch_and_add(&a, 1);
         __sync_bool_compare_and_swap(&a, 5, 10);
         __sync_bool_compare_and_swap(&x, y, z);
-        return 0; }" HAVE_GCC_ATOMICS)
+        return 0; }" COMPILER_SUPPORTS_GCC_ATOMICS)
+    set(HAVE_GCC_ATOMICS ${COMPILER_SUPPORTS_GCC_ATOMICS})
     if(NOT HAVE_GCC_ATOMICS)
       check_c_source_compiles("int main(int argc, char **argv) {
           int a;
           __sync_lock_test_and_set(&a, 1);
           __sync_lock_release(&a);
-          return 0; }" HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
+          return 0; }" COMPILER_SUPPORTS_SYNC_LOCK_TEST_AND_SET)
+      set(HAVE_GCC_SYNC_LOCK_TEST_AND_SET ${COMPILER_SUPPORTS_SYNC_LOCK_TEST_AND_SET})
     endif()
   endif()
 
@@ -1177,7 +1184,8 @@ if(SDL_LIBC)
 
     check_symbol_exists(sigaction "signal.h" HAVE_SIGACTION)
     check_symbol_exists(setjmp "setjmp.h" HAVE_SETJMP)
-    check_symbol_exists(nanosleep "time.h" HAVE_NANOSLEEP)
+    check_symbol_exists(nanosleep "time.h" FOUND_NANOSLEEP)
+    set(HAVE_NANOSLEEP ${FOUND_NANOSLEEP})
     check_symbol_exists(sysconf "unistd.h" HAVE_SYSCONF)
     check_symbol_exists(sysctlbyname "sys/types.h;sys/sysctl.h" HAVE_SYSCTLBYNAME)
     check_symbol_exists(getauxval "sys/auxv.h" HAVE_GETAUXVAL)
@@ -2974,7 +2982,7 @@ if(SDL_WERROR)
     if(HAVE_WX)
       target_compile_options(sdl-global-options INTERFACE "/WX")
     endif()
-  elseif(USE_GCC OR USE_CLANG OR USE_INTELCC)
+  elseif(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QNX)
     check_c_compiler_flag(-Werror HAVE_WERROR)
     if(HAVE_WERROR)
       target_compile_options(sdl-global-options INTERFACE "-Werror")