diff --git a/.changeset/react-native-host-strict-xcconfig.md b/.changeset/react-native-host-strict-xcconfig.md
new file mode 100644
index 0000000000..9c94346d83
--- /dev/null
+++ b/.changeset/react-native-host-strict-xcconfig.md
@@ -0,0 +1,12 @@
+---
+"@rnx-kit/react-native-host": patch
+---
+
+fix(react-native-host): Various build fixes
+
+- Rename inner `strongSelf` in `-setBridge:` to `innerStrongSelf` so it
+  no longer shadows the outer.
+- Gate `#import <React/RCTCxxBridgeDelegate.h>` behind `#if !USE_BRIDGELESS`
+  to match the already-conditional protocol conformance.
+- Drop the stray `;` before the `-viewWithModuleName:initialProperties:`
+  body.
diff --git a/packages/react-native-host/cocoa/RNXHostReleaser.mm b/packages/react-native-host/cocoa/RNXHostReleaser.mm
index 2569e47f44..6edede7160 100644
--- a/packages/react-native-host/cocoa/RNXHostReleaser.mm
+++ b/packages/react-native-host/cocoa/RNXHostReleaser.mm
@@ -50,12 +50,12 @@ - (void)setBridge:(__weak RCTBridge *)bridge
       RCTExecuteOnUIManagerQueue(^{
         [manager addUIBlock:^(RCTUIManager *uiManager,
                               NSDictionary<NSNumber *, UIView *> *viewRegistry) {
-          __typeof(self) strongSelf = weakSelf;
-          if (strongSelf == nil) {
+          __typeof(self) innerStrongSelf = weakSelf;
+          if (innerStrongSelf == nil) {
               return;
           }
 
-          strongSelf->_viewRegistry = viewRegistry;
+          innerStrongSelf->_viewRegistry = viewRegistry;
         }];
       });
     });
diff --git a/packages/react-native-host/cocoa/ReactNativeHost+View.mm b/packages/react-native-host/cocoa/ReactNativeHost+View.mm
index 21254fe4be..6c416d8bb4 100644
--- a/packages/react-native-host/cocoa/ReactNativeHost+View.mm
+++ b/packages/react-native-host/cocoa/ReactNativeHost+View.mm
@@ -41,7 +41,7 @@ + (instancetype)hostFromRootView:(RNXView *)rootView
 }
 
 - (RNXView *)viewWithModuleName:(NSString *)moduleName
-              initialProperties:(NSDictionary *)initialProperties;
+              initialProperties:(NSDictionary *)initialProperties
 {
 #ifdef USE_FABRIC
     // Having `concurrentRoot` disabled when Fabric is enabled is not recommended:
diff --git a/packages/react-native-host/cocoa/ReactNativeHost.mm b/packages/react-native-host/cocoa/ReactNativeHost.mm
index 677b9e8a38..72b71c3d07 100644
--- a/packages/react-native-host/cocoa/ReactNativeHost.mm
+++ b/packages/react-native-host/cocoa/ReactNativeHost.mm
@@ -6,7 +6,6 @@
 
 #import <React/RCTBridge.h>
 #import <React/RCTBundleURLProvider.h>
-#import <React/RCTCxxBridgeDelegate.h>
 #import <React/RCTDevLoadingViewSetEnabled.h>
 #import <React/RCTUtils.h>
 
@@ -17,6 +16,10 @@
 #import "RNXHostReleaser.h"
 #import "RNXTurboModuleAdapter.h"
 
+#if !USE_BRIDGELESS
+#import <React/RCTCxxBridgeDelegate.h>
+#endif  // !USE_BRIDGELESS
+
 @class RCTSurfacePresenter;
 
 #ifdef USE_REACT_NATIVE_CONFIG