On Jun 3, 2015, at 9:02 AM, Alex Zavatone wrote:

> 
> On Jun 2, 2015, at 3:13 PM, Charles Srstka wrote:
> 
>> On Jun 1, 2015, at 11:43 PM, Britt Durbrow 
>> <bdurb...@rattlesnakehillsoftworks.com> wrote:
>>> 
>> Variables declared in an @interface section trigger a compiler warning:
>> 
>> warning: declaration of instance variables in the interface is deprecated 
>> [-Wobjc-interface-ivars]
>> 
>>> Oh, and there’s a nifty warning that’s thrown as soon as you try to declare 
>>> a local variable of the same name as an instance variable.
>> 
> 
> OK.  This is very important to me.  Where in the project can I set these 
> flags so that they are project wide (or remove these flags) so that we get 
> those warnings.  Project > Target > Build Settings - But under which section?
> 
> I have a metric crapload of these to sort out as time permits and would LOVE 
> to turn on these warning flags so I can bring this part of project up to 2012 
> standards, and then maybe eventually to 2015 standards.  

AHA!

I couldn't find out how to add it through the Build Settings, (thanks terrible 
UI!), but If you want this in your project and your project has a .pch file, 
you can turn on the warning through a pragma and a clang diagnostic push by 
adding the code below to your .project wide header file.

/ AZ @@ 06030215 - Enable warnings on build for private interface variables 
manually declared in the @interface.
# pragma clang diagnostic push
# pragma clang diagnostic warning "-Wobjc-interface-ivars"

Thanks to Matt Thompson for his pragma article and the Clang docs.
http://nshipster.com/pragma/
http://clang.llvm.org/docs/UsersManual.html
http://fuckingclangwarnings.com/

Hope this is of use to some of you too.

Cheers,
Alex Zavatone
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