Problem of deploying Course Builder

[gigy kiki]

Hello everyone!

Could you help me to understand what the problem is?

I was deploying the Course Builder.

I clicked the script window_deploy and the process started.

But the result was the following:

Removing GCB_ALLOW_STATIC_SERV set to ''
Sourced as: './scripts/common.sh'
Ensuring runtime folder /home/User/coursebuilder_

resources_1_11_001/runtime
Using GAE SDK 1.9.73 from /home/User/coursebuilder_resources_1_11_001/runtime/google_appengine
Installing PyCrypto (This needs to be compiled so it matches
   your operating system)
Building PyCrypto

Compilation error building pycrypto-2.6.1. Please ensure a C
compiler is installed and functional on your system. On OS X, the most likely
cause of this problem is that you don't have the XCode Command Line Tools
installed. To fix this, run

  $ xcode-select --install

and follow the instructions that appear, then re-run this command.
/usr/bin/bash: Exit 255.