From 41e7335a0f662ae6d062e23227791a6ee3d6e0be Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <anonymous.maarten@gmail.com>
Date: Mon, 27 Mar 2023 19:48:06 +0200
Subject: [PATCH] Fix -Wundef warnings due to use of unguqrded SDL_USE_LIBUDEV

---
 src/core/linux/SDL_evdev.c           | 10 +++++-----
 src/haptic/linux/SDL_syshaptic.c     | 10 +++++-----
 src/hidapi/SDL_hidapi.c              |  2 +-
 src/joystick/linux/SDL_sysjoystick.c | 10 +++++-----
 4 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/src/core/linux/SDL_evdev.c b/src/core/linux/SDL_evdev.c
index 4f228063e5..3e2cc29f5d 100644
--- a/src/core/linux/SDL_evdev.c
+++ b/src/core/linux/SDL_evdev.c
@@ -124,7 +124,7 @@ static void SDL_EVDEV_sync_device(SDL_evdevlist_item *item);
 static int SDL_EVDEV_device_removed(const char *dev_path);
 
 static int SDL_EVDEV_device_added(const char *dev_path, int udev_class);
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static void SDL_EVDEV_udev_callback(SDL_UDEV_deviceevent udev_event, int udev_class, const char *dev_path);
 #endif /* SDL_USE_LIBUDEV */
 
@@ -153,7 +153,7 @@ int SDL_EVDEV_Init(void)
             return SDL_OutOfMemory();
         }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
         if (SDL_UDEV_Init() < 0) {
             SDL_free(_this);
             _this = NULL;
@@ -216,7 +216,7 @@ void SDL_EVDEV_Quit(void)
     _this->ref_count -= 1;
 
     if (_this->ref_count < 1) {
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
         SDL_UDEV_DelCallback(SDL_EVDEV_udev_callback);
         SDL_UDEV_Quit();
 #endif /* SDL_USE_LIBUDEV */
@@ -237,7 +237,7 @@ void SDL_EVDEV_Quit(void)
     }
 }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static void SDL_EVDEV_udev_callback(SDL_UDEV_deviceevent udev_event, int udev_class,
                                     const char *dev_path)
 {
@@ -280,7 +280,7 @@ void SDL_EVDEV_Poll(void)
         return;
     }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
     SDL_UDEV_Poll();
 #endif
 
diff --git a/src/haptic/linux/SDL_syshaptic.c b/src/haptic/linux/SDL_syshaptic.c
index f59b541e65..5aa16cd63e 100644
--- a/src/haptic/linux/SDL_syshaptic.c
+++ b/src/haptic/linux/SDL_syshaptic.c
@@ -38,7 +38,7 @@
 #define MAX_HAPTICS 32 /* It's doubtful someone has more then 32 evdev */
 
 static int MaybeAddDevice(const char *path);
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static int MaybeRemoveDevice(const char *path);
 static void haptic_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath);
 #endif /* SDL_USE_LIBUDEV */
@@ -156,7 +156,7 @@ int SDL_SYS_HapticInit(void)
         MaybeAddDevice(path);
     }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
     if (SDL_UDEV_Init() < 0) {
         return SDL_SetError("Could not initialize UDEV");
     }
@@ -195,7 +195,7 @@ static SDL_hapticlist_item *HapticByDevIndex(int device_index)
     return item;
 }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static void haptic_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath)
 {
     if (devpath == NULL || !(udev_class & SDL_UDEV_DEVICE_JOYSTICK)) {
@@ -285,7 +285,7 @@ static int MaybeAddDevice(const char *path)
     return numhaptics;
 }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static int MaybeRemoveDevice(const char *path)
 {
     SDL_hapticlist_item *item;
@@ -601,7 +601,7 @@ void SDL_SYS_HapticQuit(void)
         SDL_free(item);
     }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
     SDL_UDEV_DelCallback(haptic_udev_callback);
     SDL_UDEV_Quit();
 #endif /* SDL_USE_LIBUDEV */
diff --git a/src/hidapi/SDL_hidapi.c b/src/hidapi/SDL_hidapi.c
index b28243deae..26851beb4d 100644
--- a/src/hidapi/SDL_hidapi.c
+++ b/src/hidapi/SDL_hidapi.c
@@ -559,7 +559,7 @@ HIDAPI_ShutdownDiscovery()
 #undef HIDAPI_H__
 #if __LINUX__
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static const SDL_UDEV_Symbols *udev_ctx = NULL;
 
 #define udev_device_get_sysattr_value                 udev_ctx->udev_device_get_sysattr_value
diff --git a/src/joystick/linux/SDL_sysjoystick.c b/src/joystick/linux/SDL_sysjoystick.c
index f0146754c6..897ae3f0f2 100644
--- a/src/joystick/linux/SDL_sysjoystick.c
+++ b/src/joystick/linux/SDL_sysjoystick.c
@@ -189,7 +189,7 @@ static int IsJoystick(const char *path, int fd, char **name_return, SDL_Joystick
 
     if (ioctl(fd, JSIOCGNAME(sizeof(product_string)), product_string) >= 0) {
         SDL_zero(inpid);
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
         SDL_UDEV_GetProductInfo(path, &inpid.vendor, &inpid.product, &inpid.version);
 #endif
     } else {
@@ -237,7 +237,7 @@ static int IsJoystick(const char *path, int fd, char **name_return, SDL_Joystick
     return 1;
 }
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
 static void joystick_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath)
 {
     if (devpath == NULL) {
@@ -677,7 +677,7 @@ static void LINUX_FallbackJoystickDetect(void)
 
 static void LINUX_JoystickDetect(void)
 {
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
     if (enumeration_method == ENUMERATION_LIBUDEV) {
         SDL_UDEV_Poll();
     } else
@@ -730,7 +730,7 @@ static int LINUX_JoystickInit(void)
     /* Manually scan first, since we sort by device number and udev doesn't */
     LINUX_JoystickDetect();
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
     if (enumeration_method == ENUMERATION_UNSET) {
         if (SDL_GetHintBoolean("SDL_JOYSTICK_DISABLE_UDEV", SDL_FALSE)) {
             SDL_LogDebug(SDL_LOG_CATEGORY_INPUT,
@@ -1594,7 +1594,7 @@ static void LINUX_JoystickQuit(void)
 
     numjoysticks = 0;
 
-#if SDL_USE_LIBUDEV
+#ifdef SDL_USE_LIBUDEV
     if (enumeration_method == ENUMERATION_LIBUDEV) {
         SDL_UDEV_DelCallback(joystick_udev_callback);
         SDL_UDEV_Quit();