.. comment SPDX-License-Identifier: CC-BY-SA-4.0 .. comment: Copyright (c) 2016 Chris Johns .. comment: All rights reserved. .. _macos: Apple OS X ========== Apple's OS X is fully supported. You need to download and install a recent version of the Apple developer application Xcode. Xocde is available in the App Store. Make sure you install the Command Line Tools add on available for download within Xcode and once installed open a Terminal shell and enter the command ``cc`` and accept the license agreement. The normal prefix when working on OS X as a user is under your home directory. Prefixes of :file:`$HOME/development/rtems` or :file:`$HOME/rtems` are suitable. :ref:`prefixes` details using Prefixes to manage the installation.