--安装Xcode------------------------------------------------------------

检测是否安装好Xcode

$ xcode-select -p

显示这样说明安装好

/Applications/Xcode.app/Contents/Developer

如果没有装好，安装方法：

Xcode不同版本可以在以下网页下载，需要登陆apple帐户:

https://developer.apple.com/downloads/

Mac OS X 10.9.4 下载的Xcode 6.2版本

-----------------------------------------------------------------------------

--安装Xcode Command Line Tools---

1.调出安装窗口

$ xcode-select --install

2.点击 Install 安装

Click “Install” to download and install Xcode Command Line Tools.

3.查看安装的gcc版本

$ gcc --versionConfigured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)Target: x86_64-apple-darwin14.0.0

Thread model: posix

ABR:~ abREN$ xcode-select -p

/Applications/Xcode.app/Contents/Developer

 -h, --help                  print this help message and exit

 -p, --print-path            print the path of the active developer directory

 -s <path>, --switch <path>  set the path for the active developer directory

 -v, --version               print the xcode-select version

 -r, --reset                 reset to the default command line tools path

参考地址:http://railsapps.github.io/xcode-command-line-tools.html 

                                                                           2015-11-17 15:47 @Brussels, Belgium