[GNC-dev] Building Mac version using SDK 12

When I try to build either current maint or master using MacOSX12.1.sdk 
or MacOSX12.3.sdk for SDKROOT I get compile errors in 
gnc-filepath-utils.cpp.  The first error is

In file included from 
/System/Volumes/Data/tools/gnucash-maint/gnucash/libgnucash/core-utils/gnc-filepath-utils.cpp:64:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:12:
/Library/Developer/CommandLineTools/SDKs/MacOSX12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSBundle.h:91:143: 
error: function does not return NSString
- (NSAttributedString *)localizedAttributedStringForKey:(NSString *)key 
value:(nullable NSString *)value table:(nullable NSString *)tableName 
NS_FORMAT_ARGUMENT(1) NS_REFINED_FOR_SWIFT API_AVAILABLE(macos(12.0), 
ios(15.0), watchos(8.0), tvos(15.0));
/Library/Developer/CommandLineTools/SDKs/MacOSX12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:103:48: 
note: expanded from macro 'NS_FORMAT_ARGUMENT'
         #define NS_FORMAT_ARGUMENT(A) __attribute__ ((format_arg(A)))

This is probably because there is something wrong with my build 
environment, but I was wondering if anyone else had seen this?

Mike