diff --git a/subprojects/gst-plugins-bad/sys/applemedia/avfdeviceprovider.m b/subprojects/gst-plugins-bad/sys/applemedia/avfdeviceprovider.m
index 3f2d893a67..d1002c9067 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/avfdeviceprovider.m
+++ b/subprojects/gst-plugins-bad/sys/applemedia/avfdeviceprovider.m
@@ -81,7 +81,7 @@ gst_av_capture_device_get_props (AVCaptureDevice *device)
   g_free (unique_id);
   g_free (model_id);
 
-#if !HAVE_IOS
+#ifndef HAVE_IOS
   char *manufacturer = g_strdup ([[device manufacturer] UTF8String]);
   gst_structure_set (props,
     "avf.manufacturer", G_TYPE_STRING, manufacturer,
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/avfvideosrc.m b/subprojects/gst-plugins-bad/sys/applemedia/avfvideosrc.m
index cadc27fe4e..bcd94ca567 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/avfvideosrc.m
+++ b/subprojects/gst-plugins-bad/sys/applemedia/avfvideosrc.m
@@ -27,7 +27,7 @@
 
 #import <AVFoundation/AVFoundation.h>
 #import <CoreMedia/CoreMedia.h>
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 #import <AppKit/AppKit.h>
 #endif
 #include <gst/video/video.h>
@@ -57,7 +57,7 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS (
-#if !HAVE_IOS
+#ifndef HAVE_IOS
         GST_VIDEO_CAPS_MAKE_WITH_FEATURES
         (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
             "UYVY") ", "
@@ -233,7 +233,7 @@ gst_avf_video_source_device_type_get_type (void)
 - (BOOL)openDevice;
 - (void)closeDevice;
 - (GstVideoFormat)getGstVideoFormat:(NSNumber *)pixel_format;
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 - (CGDirectDisplayID)getDisplayIdFromDeviceIndex;
 - (float)getScaleFactorFromDeviceIndex;
 #endif
@@ -257,7 +257,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
 
 @end
 
-#if HAVE_IOS
+#ifdef HAVE_IOS
 
 static AVCaptureDeviceType GstAVFVideoSourceDeviceType2AVCaptureDeviceType(GstAVFVideoSourceDeviceType deviceType) {
   switch (deviceType) {
@@ -451,7 +451,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
 
 - (BOOL)openScreenInput
 {
-#if HAVE_IOS
+#ifdef HAVE_IOS
   return NO;
 #else
   CGDirectDisplayID displayId;
@@ -598,7 +598,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
   return gst_format;
 }
 
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 - (CGDirectDisplayID)getDisplayIdFromDeviceIndex
 {
   NSDictionary *description;
@@ -699,7 +699,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
   pixel_formats = output.availableVideoCVPixelFormatTypes;
 
   if (captureScreen) {
-#if !HAVE_IOS
+#ifndef HAVE_IOS
     CGRect rect;
     AVCaptureScreenInput *screenInput = (AVCaptureScreenInput *)input;
     if (CGRectIsEmpty (screenInput.cropRect)) {
@@ -751,7 +751,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
         forKey:(NSString*)kCVPixelBufferPixelFormatTypeKey];
 
     if (captureScreen) {
-#if !HAVE_IOS
+#ifndef HAVE_IOS
       AVCaptureScreenInput *screenInput = (AVCaptureScreenInput *)input;
       screenInput.minFrameDuration = CMTimeMake(info.fps_d, info.fps_n);
 #else
@@ -1145,7 +1145,7 @@ enum
   PROP_DEVICE_TYPE,
   PROP_DO_STATS,
   PROP_FPS,
-#if !HAVE_IOS
+#ifndef HAVE_IOS
   PROP_CAPTURE_SCREEN,
   PROP_CAPTURE_SCREEN_CURSOR,
   PROP_CAPTURE_SCREEN_MOUSE_CLICKS,
@@ -1258,7 +1258,7 @@ gst_avf_video_src_class_init (GstAVFVideoSrcClass * klass)
       g_param_spec_int ("fps", "Frames per second",
           "Last measured framerate, if statistics are enabled",
           -1, G_MAXINT, -1, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
-#if !HAVE_IOS
+#ifndef HAVE_IOS
   g_object_class_install_property (gobject_class, PROP_CAPTURE_SCREEN,
       g_param_spec_boolean ("capture-screen", "Enable screen capture",
           "Enable screen capture functionality", FALSE,
@@ -1349,7 +1349,7 @@ gst_avf_video_src_get_property (GObject * object, guint prop_id, GValue * value,
   GstAVFVideoSrcImpl *impl = GST_AVF_VIDEO_SRC_IMPL (object);
 
   switch (prop_id) {
-#if !HAVE_IOS
+#ifndef HAVE_IOS
     case PROP_CAPTURE_SCREEN:
       g_value_set_boolean (value, impl.captureScreen);
       break;
@@ -1408,7 +1408,7 @@ gst_avf_video_src_set_property (GObject * object, guint prop_id,
   GstAVFVideoSrcImpl *impl = GST_AVF_VIDEO_SRC_IMPL (object);
 
   switch (prop_id) {
-#if !HAVE_IOS
+#ifndef HAVE_IOS
     case PROP_CAPTURE_SCREEN:
       impl.captureScreen = g_value_get_boolean (value);
       break;
@@ -1565,7 +1565,7 @@ gst_av_capture_device_get_caps (AVCaptureDevice *device, AVCaptureVideoDataOutpu
 {
   GstCaps *result_caps, *result_gl_caps;
   gboolean is_gl_format;
-#if !HAVE_IOS
+#ifndef HAVE_IOS
   GstVideoFormat gl_formats[] = { GST_VIDEO_FORMAT_UYVY, GST_VIDEO_FORMAT_YUY2, 0 };
 #else
   GstVideoFormat gl_formats[] = { GST_VIDEO_FORMAT_NV12, 0 };
@@ -1629,7 +1629,7 @@ gst_av_capture_device_get_caps (AVCaptureDevice *device, AVCaptureVideoDataOutpu
                                                         NULL));
           gst_caps_set_simple (caps,
                                "texture-target", G_TYPE_STRING,
-#if !HAVE_IOS
+#ifndef HAVE_IOS
                                GST_GL_TEXTURE_TARGET_RECTANGLE_STR,
 #else
                                GST_GL_TEXTURE_TARGET_2D_STR,
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/corevideobuffer.c b/subprojects/gst-plugins-bad/sys/applemedia/corevideobuffer.c
index 409c6ac7dc..002679208d 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/corevideobuffer.c
+++ b/subprojects/gst-plugins-bad/sys/applemedia/corevideobuffer.c
@@ -22,13 +22,13 @@
 #endif
 #include "corevideobuffer.h"
 #include "corevideomemory.h"
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 #include "iosurfaceglmemory.h"
 #endif
 #include "videotexturecache-gl.h"
 #if defined(APPLEMEDIA_MOLTENVK)
 #include "videotexturecache-vulkan.h"
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 #include "iosurfacevulkanmemory.h"
 #endif
 #endif
@@ -110,7 +110,7 @@ static GstMemory *
 _create_glmem (GstAppleCoreVideoPixelBuffer * gpixbuf,
     GstVideoInfo * info, guint plane, gsize size, GstVideoTextureCache * cache)
 {
-#if HAVE_IOS
+#ifdef HAVE_IOS
   return gst_video_texture_cache_create_memory (cache, gpixbuf, plane, size);
 #else
   GstIOSurfaceGLMemory *mem;
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.h b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.h
index e986bfb324..5ae033b030 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.h
+++ b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.h
@@ -40,7 +40,7 @@ typedef struct _GstVideoTextureCacheGL
   GstVideoTextureCache parent;
 
   GstGLContext *ctx;
-#if HAVE_IOS
+#ifdef HAVE_IOS
   CVOpenGLESTextureCacheRef cache;
 #else
   GstBufferPool *pool;
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.m b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.m
index 95ac194c54..1f5187197d 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.m
+++ b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-gl.m
@@ -25,7 +25,7 @@
 
 G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 #import <AppKit/AppKit.h>
 #include "iosurfaceglmemory.h"
 #endif
@@ -48,7 +48,7 @@ typedef struct _ContextThreadData
 
 typedef struct _TextureWrapper
 {
-#if HAVE_IOS
+#ifdef HAVE_IOS
   CVOpenGLESTextureCacheRef cache;
   CVOpenGLESTextureRef texture;
 #else
@@ -80,7 +80,7 @@ gst_video_texture_cache_gl_finalize (GObject * object)
 {
   GstVideoTextureCacheGL *cache_gl = GST_VIDEO_TEXTURE_CACHE_GL (object);
 
-#if HAVE_IOS
+#ifdef HAVE_IOS
   CFRelease (cache_gl->cache); /* iOS has no "CVOpenGLESTextureCacheRelease" */
 #else
 #if 0
@@ -132,7 +132,7 @@ gst_video_texture_cache_gl_constructed (GObject * object)
 
   g_return_if_fail (GST_IS_GL_CONTEXT (cache_gl->ctx));
 
-#if HAVE_IOS
+#ifdef HAVE_IOS
   CFMutableDictionaryRef cache_attrs =
       CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks,
       &kCFTypeDictionaryValueCallBacks);
@@ -170,7 +170,7 @@ gst_video_texture_cache_gl_class_init (GstVideoTextureCacheGLClass *klass)
   cache_class->create_memory = gst_video_texture_cache_gl_create_memory;
 }
 
-#if HAVE_IOS
+#ifdef HAVE_IOS
 static void
 gst_video_texture_cache_gl_release_texture (TextureWrapper *data)
 {
@@ -257,7 +257,7 @@ gst_video_texture_cache_gl_create_memory (GstVideoTextureCache * cache,
   GstVideoTextureCacheGL *cache_gl = GST_VIDEO_TEXTURE_CACHE_GL (cache);
   ContextThreadData data = {cache_gl, gpixbuf, plane, size, NULL};
 
-#if HAVE_IOS
+#ifdef HAVE_IOS
   gst_gl_context_thread_add (cache_gl->ctx,
       (GstGLContextThreadFunc) _do_create_memory, &data);
 #endif
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-vulkan.mm b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-vulkan.mm
index a889bf0a4e..38236a9a7f 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-vulkan.mm
+++ b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache-vulkan.mm
@@ -23,7 +23,7 @@
 
 #include <Metal/Metal.h>
 
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 #import <AppKit/AppKit.h>
 #endif
 #include "iosurfacevulkanmemory.h"
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache.m b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache.m
index 460a1fbb57..210c6f6413 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache.m
+++ b/subprojects/gst-plugins-bad/sys/applemedia/videotexturecache.m
@@ -21,7 +21,7 @@
 #  include "config.h"
 #endif
 
-#if !HAVE_IOS
+#ifndef HAVE_IOS
 #import <AppKit/AppKit.h>
 #endif
 #include "videotexturecache.h"
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/vtdec.c b/subprojects/gst-plugins-bad/sys/applemedia/vtdec.c
index 8f98e7057e..9e51dd6ced 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/vtdec.c
+++ b/subprojects/gst-plugins-bad/sys/applemedia/vtdec.c
@@ -555,7 +555,7 @@ gst_vtdec_negotiate (GstVideoDecoder * decoder)
         GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
     if (output_textures)
       gst_caps_set_simple (output_state->caps, "texture-target", G_TYPE_STRING,
-#if !HAVE_IOS
+#ifndef HAVE_IOS
           GST_GL_TEXTURE_TARGET_RECTANGLE_STR,
 #else
           GST_GL_TEXTURE_TARGET_2D_STR,
diff --git a/subprojects/gst-plugins-bad/sys/applemedia/vtenc.c b/subprojects/gst-plugins-bad/sys/applemedia/vtenc.c
index 1efa27ad6c..7545a905d3 100644
--- a/subprojects/gst-plugins-bad/sys/applemedia/vtenc.c
+++ b/subprojects/gst-plugins-bad/sys/applemedia/vtenc.c
@@ -1532,7 +1532,7 @@ gst_vtenc_create_session (GstVTEnc * self)
   const GstVTEncoderDetails *codec_details =
       GST_VTENC_CLASS_GET_CODEC_DETAILS (G_OBJECT_GET_CLASS (self));
 
-#if !HAVE_IOS
+#ifndef HAVE_IOS
   /* Apple's M1 hardware encoding fails when provided with an interlaced ProRes source.
    * It's most likely a bug in VideoToolbox, as no such limitation has been officially mentioned anywhere.
    * For now let's disable HW encoding entirely when such case occurs. */