--- ds4_metal.m.orig
+++ ds4_metal.m
@@ -13,6 +13,16 @@
 #include "ds4.h"
 #include "ds4_gpu.h"
 
+/*
+ * MTLResidencySet is a macOS 15 SDK API. Runtime @available checks are not
+ * enough when building against older SDKs because the types are unavailable.
+ */
+#ifndef __MAC_15_0
+#define DS4_METAL_HAS_RESIDENCY_SETS 0
+#else
+#define DS4_METAL_HAS_RESIDENCY_SETS (__MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_15_0)
+#endif
+
 /*
  * Objective-C Metal glue for the C engine.
  *
@@ -356,7 +364,7 @@
 }
 
 static void ds4_gpu_model_residency_clear(void) {
-#if TARGET_OS_OSX
+#if TARGET_OS_OSX && DS4_METAL_HAS_RESIDENCY_SETS
     if (@available(macOS 15.0, *)) {
         if (g_model_residency_set) {
             [g_model_residency_set endResidency];
@@ -372,7 +380,7 @@
 static int ds4_gpu_model_residency_request_views(void) {
     if (g_model_view_count == 0 || getenv("DS4_METAL_NO_RESIDENCY") != NULL) return 1;
 
-#if TARGET_OS_OSX
+#if TARGET_OS_OSX && DS4_METAL_HAS_RESIDENCY_SETS
     if (@available(macOS 15.0, *)) {
         /*
          * Register all model views as one residency set before inference. This