Fix GoogleUtilities regression for Firestore builds 2 (firebase#2433)

* Run Firestore builds/tests on GoogleUtilities changes
* Silence macOS 10.10 warnings
* Add cast to fix Firestore macOS builds

Author: paulb777

GoogleUtilities/Logger/GULLogger.m

@@ -19,6 +19,10 @@
 #import "GULLoggerLevel.h"
 #import "GULOSLogger.h"
 
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#endif
+
 static id<GULLoggerSystem> sGULLogger;
 
 NSString *const kGULLoggerInvalidLoggerLevelCore = @"I-COR000023";

GoogleUtilities/Logger/Private/GULOSLogger.m

@@ -22,6 +22,10 @@
 #import "GULLogger+Internal.h"
 #import "GULLoggerLevel.h"
 
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#endif
+
 NS_ASSUME_NONNULL_BEGIN
 
 // Function which calls the macro so that this can be substituted for testing.
@@ -38,8 +42,14 @@ static void GULLOSLogWithType(os_log_t log, os_log_type_t type, char *s, ...) {
     va_start(args, s);
 #if TARGET_OS_TV
     os_log_with_type(log, type, "%s", (char *)args);
+#elif TARGET_OS_OSX
+    // Silence macOS 10.10 warning until we move minimum to 10.11.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability"
+    os_log_with_type(log, type, "%s", (char *)args);
+#pragma clang diagnostic pop
 #else
-    os_log_with_type(log, type, "%s", args);
+  os_log_with_type(log, type, "%s", args);
 #endif
     va_end(args);
   } else {
@@ -169,7 +179,15 @@ - (void)logWithLevel:(GULLoggerLevel)level
 #else
       if ([[UIDevice currentDevice].systemVersion integerValue] >= 9) {
 #endif
+#if TARGET_OS_OSX
+        // Silence macOS 10.10 warning until we move minimum to 10.11.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunguarded-availability"
         osLog = os_log_create(kGULLoggerClientFacilityName, service.UTF8String);
+#pragma clang diagnostic pop
+#else
+        osLog = os_log_create(kGULLoggerClientFacilityName, service.UTF8String);
+#endif
         self.categoryLoggers[service] = osLog;
       } else {
 #ifdef DEBUG

scripts/if_changed.sh

@@ -71,11 +71,12 @@ else
       ;;
 
     Firestore-xcodebuild|Firestore-pod-lib-lint)
-      check_changes '^(Firestore|FirebaseFirestore.podspec|FirebaseFirestoreSwift.podspec)'
+      check_changes '^(Firestore|FirebaseFirestore.podspec|FirebaseFirestoreSwift.podspec|'\
+'GoogleUtilities)'
       ;;
 
     Firestore-cmake)
-      check_changes '^(Firestore/(core|third_party)|cmake)'
+      check_changes '^(Firestore/(core|third_party)|cmake|GoogleUtilities)'
       ;;
 
     *)