object-c ubuntu下开发环境搭建

1. 安装gnustep和gobjc
sudo apt-get install gnustep gnustep-devel gobjc

2. 示例代码

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{
        NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

        NSLog (@"hello world");
        [pool drain];
        return 0;
}

3. 编译
gcc `gnustep-config --objc-flags` hello.m -o hello -lgnustep-base

4. 运行
./hello

运行结果如下：
2016-01-04 14:16:03.705 hello[2405] hello world


参考：http://www.techotopia.com/index.php/Installing_and_Using_GNUstep_and_Objective-C_on_Linux