Fixed compile errors on various platforms

src/joystick/bsd/SDL_sysjoystick.c

@@ -563,7 +563,7 @@ SDL_SYS_JoystickUpdate(SDL_Joystick * joy)
                             v *= 32768 /
                                 ((hitem.logical_maximum -
                                   hitem.logical_minimum + 1) / 2);
-                            if (v != joy->axes[naxe]) {
+                            if (v != joy->axes[naxe].value) {
                                 SDL_PrivateJoystickAxis(joy, naxe, v);
                             }
                         } else if (usage == HUG_HAT_SWITCH) {

src/joystick/darwin/SDL_sysjoystick.c

@@ -134,6 +134,7 @@ GetHIDScaledCalibratedState(recDevice * pDevice, recElement * pElement, SInt32 m
     const float deviceScale = max - min;
     const float readScale = pElement->maxReport - pElement->minReport;
     const SInt32 value = GetHIDElementState(pDevice, pElement);
+printf("MIN/MAX = %d/%d, value = %d\n", pElement->minReport, pElement->maxReport, value);
     if (readScale == 0) {
         return value;           /* no scaling at all */
     }
@@ -691,8 +692,9 @@ SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
     element = device->firstAxis;
     i = 0;
     while (element) {
+printf("Getting axis %d ", i);
         value = GetHIDScaledCalibratedState(device, element, -32768, 32767);
-        if (value != joystick->axes[i]) {
+        if (value != joystick->axes[i].value) {
             SDL_PrivateJoystickAxis(joystick, i, value);
         }
         element = element->pNext;

src/joystick/haiku/SDL_haikujoystick.cc

@@ -197,7 +197,7 @@ extern "C"
 
         /* Generate axis motion events */
         for (i = 0; i < joystick->naxes; ++i) {
-            change = ((int32) axes[i] - joystick->axes[i]);
+            change = ((int32) axes[i] - joystick->axes[i].value);
             if ((change > JITTER) || (change < -JITTER)) {
                 SDL_PrivateJoystickAxis(joystick, i, axes[i]);
             }

src/joystick/iphoneos/SDL_sysjoystick.m

@@ -516,7 +516,7 @@ SDL_SYS_MFIJoystickUpdate(SDL_Joystick * joystick)
                  * initializes its values to 0. We only want to make sure the
                  * player index is up to date if the user actually moves an axis. */
                 if ((i != 2 && i != 5) || axes[i] != -32768) {
-                    updateplayerindex |= (joystick->axes[i] != axes[i]);
+                    updateplayerindex |= (joystick->axes[i].value != axes[i]);
                 }
                 SDL_PrivateJoystickAxis(joystick, i, axes[i]);
             }