Re: Source-level compatibility of runtime(s) with Apple

[Richard Frith-Macdonald]

On 21 Feb 2011, at 15:23, Ivan Vučica wrote:

> Hi,
> 
> I've ran into a difference between runtime on Debian and Apple's runtime in 
> the function name conventions. For example:
> 
>       Class classFromIsa;
> #if GNUSTEP
>       classFromIsa = objc_lookup_class([isaStr UTF8String]);
> #else
>       classFromIsa = objc_lookUpClass([isaStr UTF8String]);
> #endif
> 
> I wanted to ask whether the GNU/GNUstep runtime could additionally include 
> the Apple variant of the function name, but fortunately I looked at libobjc2 
> source code first. From what I can see, there the Apple's style of the 
> function name is used. 
> 
> What is the future policy regarding this? What should the above #if check for?

If you are using GNUstep, you should use objc_lookUpClass() irrespective of the 
runtime, because GNUstep provides and uses the *modern* Apple runtime API
So there should be no #if check required.

Of course, your debian distribution might be using a very old version of 
GNUstep where this wasn't the case ... in which case it would be good to update 
to a more recent version.