compile objective-c programs on ubuntu-12.04

ubuntu 12.04上编译Objective-C代码。

 sudo apt-get install gnustep gobjc
 sudo apt-get install gnustep-devel libgnustep-base-dev gnustep-games
 sudo apt-get install build-essential
 sudo chmod +x /usr/share/GNUstep/Makefiles/GNUstep.sh
 /usr/share/GNUstep/Makefiles/GNUstep.sh
 gnustep-config --objc-flags

 vi /home/david/.bashrc

添加以下内容到~/.bashrc：

alias gcc='gcc `gnustep-config --objc-flags`'

 . /home/david/.bashrc

 vi hello.m

#import
int main(int argc,const char *argv[]){
    NSLog(@"Hello World");
    return (0);
}//main

 gcc hello.m -o hello -lgnustep-base
# or
 gcc hello.m -lgnustep-base -o hello
# for multi files
 gcc Fraction.m FractionTest.m -lgnustep-base -o bin/FractionTest

可以创建一个build脚本来帮助完成编译任务。

 vi ~/bin/build

#! /bin/sh
gcc `gnustep-config --objc-flags` ${1}.m -o $1 -lgnustep-base

 vi ~/bin/build-project

#! /bin/sh
gcc `gnustep-config --objc-flags` $* -lgnustep-base

 chmod +x ~/bin/build*
 build prog