Home/ Questions/Q 6729159
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-26T10:15:22+00:00

Since Xcode 4.2 comes with LLVM 3.0 we’re finally able to use automatic synthesizeation

  • 0

Since Xcode 4.2 comes with LLVM 3.0 we’re finally able to use automatic synthesizeation. You can turn it on by adding the following two flags to your Other C Flags in the Apple LLVM compiler 3.0 - Language section:

  • -Xclang
  • -fobjc-default-synthesize-properties

Now you can get rid of your @synthesize boiler plate code if you just want the default settings for your property synthesizeation (I guess we already use automatic reference counting).

When I hit build, the compiler warns me about missing @synthesize etc. statements, like so:

MyController.h:34:43: warning: property 'myProperty' requires method 'myProperty' to be defined - use @synthesize, @dynamic or provide a method implementation [3]
@property (strong, nonatomic) MyClass *myProperty;

I prefer a warning-free build, so the question is: How can I suppress this kind of warnings because obviously they don’t make sense anymore.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Are you sure -Xclang is passed to the compiler

    clang -x objective-c -Xclang -fobjc-default-synthesize-properties -c TestClass.m -o TestClass.o

    does not show any warnings while 

    clang -x objective-c -fobjc-default-synthesize-properties -c TestClass.m -o TestClass.o

    does which is by the way correct since no properties are synthesized

    Here is the TestClass.m I used:

    #import <Foundation/Foundation.h>

@interface TestClass : NSObject

@property (nonatomic, strong) NSObject * test;

@end

@implementation TestClass

@end
    • 0