Re: error with runtime includes

[Fred Kiefer]

I think the best way forward is to just include runtime.h here and only 
use class_getInstanceSize(). That wont work with older versions of 
Objective-C without base support, but you will need GNUstep base anyway 
and there is no reason to use a version of base without the Objective-C 
2 compatibility layer.
In your specific case you are already using gcc 4.6 which provides all 
the necessary include files by itself.

Fred

On 24.01.2012 18:33, Riccardo Mottola wrote:
> Hi,
>
> while compiling FlexiSheet I get this:
>
> Compiling file FSObject.m ...
> In file included from FSObject.m:43:0:
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/objc-api.h:46:3: error:
> #error You
> can not include both objc/objc-api.h and objc/runtime.h. Include
> objc/objc-api.h for the traditional GNU Objective-C Runtime API and
> objc/runtime.h for the modern one.
> In file included from FSObject.m:43:0:
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/objc-api.h:69:8: error:
> redefinition of ‘struct objc_method_description’
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/runtime.h:87:8: note:
> originally defined here
> In file included from FSObject.m:43:0:
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/objc-api.h:120:28: error:
> conflicting types for ‘Method’
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/runtime.h:70:29: note:
> previous declaration of ‘Method’ was here
> In file included from FSObject.m:43:0:
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/objc-api.h:174:30: error:
> conflicting types for ‘Category’
> /usr/lib/gcc/i486-linux-gnu/4.6/include/objc/runtime.h:75:31: note:
> previous declaration of ‘Category’ was here
>
> I'm using the traditional runtime and this file used to compile fine
> (and on Apple too)
>
> what is realy the problem? I am not including objc/runtime explicitely.
>
> 41 #import "FSObject.h"
> 42 #import <objc/objc.h>
> 43 #import <objc/objc-api.h>
> 44 #ifdef __APPLE__
> 45 #import <objc/objc-class.h>
> 46 #endif