Fixed building without linux/input.h

https://github.com/libsdl-org/SDL/issues/6169

src/core/linux/SDL_evdev_capabilities.c

@@ -19,10 +19,12 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+#include "../../SDL_internal.h"
 
 #include "SDL_evdev_capabilities.h"
 
-#if HAVE_LIBUDEV_H || defined(SDL_JOYSTICK_LINUX)
+
+#if HAVE_LINUX_INPUT_H
 
 /* missing defines in older Linux kernel headers */
 #ifndef BTN_TRIGGER_HAPPY
@@ -142,4 +144,6 @@ SDL_EVDEV_GuessDeviceClass(unsigned long bitmask_ev[NBITS(EV_MAX)],
     return devclass;
 }
 
-#endif
+#endif /* HAVE_LINUX_INPUT_H */
+
+/* vi: set ts=4 sw=4 expandtab: */

src/core/linux/SDL_evdev_capabilities.h

@@ -19,12 +19,13 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
-
 #include "../../SDL_internal.h"
 
 #ifndef SDL_evdev_capabilities_h_
 #define SDL_evdev_capabilities_h_
 
+#if HAVE_LINUX_INPUT_H
+
 #include <linux/input.h>
 
 /* A device can be any combination of these classes */
@@ -51,6 +52,8 @@ extern int SDL_EVDEV_GuessDeviceClass(unsigned long bitmask_ev[NBITS(EV_MAX)],
                                       unsigned long bitmask_key[NBITS(KEY_MAX)],
                                       unsigned long bitmask_rel[NBITS(REL_MAX)]);
 
+#endif /* HAVE_LINUX_INPUT_H */
+
 #endif /* SDL_evdev_capabilities_h_ */
 
 /* vi: set ts=4 sw=4 expandtab: */

src/core/linux/SDL_ime.c

@@ -18,6 +18,7 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+#include "../../SDL_internal.h"
 
 #include "SDL_ime.h"
 #include "SDL_ibus.h"

src/core/linux/SDL_sandbox.c

@@ -19,9 +19,8 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
-
-
 #include "../../SDL_internal.h"
+
 #include "SDL_sandbox.h"
 
 #include <unistd.h>

src/core/linux/SDL_udev.c

@@ -18,6 +18,7 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+#include "../../SDL_internal.h"
 
 /*
  * To list the properties of a device, try something like:

src/core/linux/SDL_udev.h

@@ -24,7 +24,7 @@
 #ifndef SDL_udev_h_
 #define SDL_udev_h_
 
-#if HAVE_LIBUDEV_H
+#if HAVE_LIBUDEV_H && HAVE_LINUX_INPUT_H
 
 #ifndef SDL_USE_LIBUDEV
 #define SDL_USE_LIBUDEV 1
@@ -108,7 +108,7 @@ extern const SDL_UDEV_Symbols *SDL_UDEV_GetUdevSyms(void);
 extern void SDL_UDEV_ReleaseUdevSyms(void);
 
 
-#endif /* HAVE_LIBUDEV_H */
+#endif /* HAVE_LIBUDEV_H && HAVE_LINUX_INPUT_H */
 
 #endif /* SDL_udev_h_ */