Re: @property problem

FROM : Jim Correia
DATE : Sun Feb 17 19:04:31 2008

On Feb 17, 2008, at 12:47 PM, William Squires wrote:

>> The 32-bit runtime must remain binary compatible with all code that 
>> was compiled and targeted for Tiger and earlier.
>>
>> It is extremely desirable to be able to link against the 10.5 SDK 
>> and still deploy your application on Tiger (after taking 
>> appropriate measures.)

>
>  Huh? I thought the point of linking against a new SDK was to take 
> advantage of features in that SDK, not to maintain backwards 
> compatibility with the older OS features?


Suppose there is a new framework feature on Leopard that I want to 
take advantage of. I link against the 10.5 SDK and in my code d

if (some feature available) {
   ...
} else {
   ... some alternate code, or nothing at all ...
}

The resulting binary can, with care, still work on 10.4 and earlier.

Jim