Xcode

Command Line Tools

• Launch Terminal app by using Spotlight search, type in terminal.
• Then type the followings in Terminal:

  xcode-select --install
  

• It'll prompt you to install the command line developer tools.
• Click Install to continue.
• Click Agree on the Command Line Tools License Agreement.

• If you do not see the prompt but see this output from the Terminal:

  xcode-select: error: command line tools are already installed, use "Software Update" to install updates
  

• It means you have installed it already.

Xcode

• Download Xcode from the App Store or the Apple developer website.
• Install Xcode on your Mac.
• Just drag the Xcode in your Applications folder.
• Run Xcode at once, agree to the Xcode and iOS SDK License Agreement.