在GNUStep上編譯和執行Objective-C

1. 以下是你的Objective-C源文件 （hello.m） 

include $(GNUSTEP_MAKEFILES)/common.make 
 
TOOL_NAME = hello  
hello_OBJC_FILES = hello.m  
 
include $(GNUSTEP_MAKEFILES)/tool.make 

2. 准備如下makefile，並命名為GNUmakefile 

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

3. 編譯 

$ make 
This is gnustep-make 2.6.1. Type 'make print-gnustep-make-help' for help. 
Making all for tool hello... 
 Compiling file hello.m ... 
 Linking tool hello ... 

4. 執行 

$ ./first  
Welcome to Objective-C