RE: How to compile Objective-C code with GCC ?

[Åke Forslund <aforslund@xxxxxxxxxxxxxxx>]

I'm not an expert on Objective-C (in fact I haven't worked with it at all) so take my advice with a grain of salt. I think your hello world test is a bit over complicated, I tried this example (found on Swedish Wikipedia):

#import <stdio.h>
#import <objc/Object.h>
 
@interface MyClass : Object {
}
- (void)world;
@end
 
@implementation MyClass
- (void)world {
    printf("hello, World!\n");
}
@end
 
int main() {
    id hello = [MyClass new];
    [hello world];
    return 0;
}

I compiled with gcc hello.m -lobjc -o hello
This worked with no warnings and printed "Hello World!" as expected. (I must admit that my gcc is somewhat old 4.4.5)

/Åke

Åke Forslund
Lasermax Roll Systems
Tel: +46 (0) 372-25639


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