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Ubuntu14.04 Objective-C hello world

2024-07-06 21:34:23   223人阅读

1. Install GNUstep

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sudo apt-get install gnustep gnustep-devel

2. Write hello world program, and save as hello.m

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#import <Foundation/Foundation.h>
 
int main (int argc, const char * argv[])
{
        NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
 
        NSLog (@"hello world");
        [pool drain];
        return 0;
}

3. Set GNUstep compile enviroment

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. /usr/share/GNUstep/Makefiles/GNUstep.sh

4. Compile 

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gcc hello.m `gnustep-config --objc-flags` `gnustep-config --objc-libs` -lobjc -lgnustep-base -o hello

　　


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