page.title=Requirements
@jd:body

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<p>Before you download and build the Android source, ensure your system meets
  the following requirements. Then see <a href="initializing.html">Initializing a
  Build Environment</a> for installation instructions by operating system.</p>

<h2 id=hardware-requirements>Hardware requirements</h2>

<p>Your development workstation should meet or exceed these hardware requirements:</p>

<ul>

  <li>A 64-bit environment is required for Gingerbread (2.3.x) and newer versions, including the master
  branch. You can compile older versions on 32-bit systems.
  </li>

  <li>At least 100GB of free disk space for a checkout, 150GB for a single
  build, and 200GB or more for multiple builds. If you employ ccache, you will
  need even more space.</p>
  </li>

  <li>If you are running Linux in a virtual machine, you need at
  least 16GB of RAM/swap.
  </li>

</ul>

<h2 id=software-requirements>Software requirements</h2>

<p>The <a
  href="https://android.googlesource.com/">Android Open Source Project
  (AOSP)</a> is routinely tested in-house on recent versions of
  Ubuntu LTS (14.04), but most distributions should have the required
  build tools available.</p>

<p>You workstation will need this software:</p>

<ul>

  <li>A Linux or Mac OS operating system. It is also possible to build Android in a
  virtual machine on unsupported systems such as Windows.</br>

  For Linux:
  <ul>
    <li>Android 6.0 (Marshmallow) - AOSP master: Ubuntu 14.04 (Trusty)</li>
    <li>Android 2.3.x (Gingerbread) - Android 5.x (Lollipop): Ubuntu 12.04 (Precise)</li>
    <li>Android 1.5 (Cupcake) - Android 2.2.x (Froyo): Ubuntu 10.04 (Lucid)</li>
  </ul>

  For Mac:
  <ul>
    <li>Android 6.0 (Marshmallow) - AOSP master: Mac OS v10.10 (Yosemite) or later</li>
    <li>Android 5.x (Lollipop): Mac OS v10.8 (Mountain Lion)</li>
    <li>Android 4.1.x-4.3.x (Jelly Bean) - Android 4.4.x (KitKat): Mac OS v10.6 (Snow Leopard) or Mac OS X v10.7 (Lion)</li>
    <li>Android 1.5 (Cupcake) - Android 4.0.x (Ice Cream Sandwich): Mac OS v10.5 (Leopard) or Mac OS X v10.6 (Snow Leopard)</li>
  </ul>
  </li>

  <li>
  Java Development Kit (JDK):
  <ul>
    <li>The master branch of Android in AOSP: Java 8
    <li>Android 5.x (Lollipop) - Android 6.0 (Marshmallow): Java 7
    <li>Android 2.3.x (Gingerbread) - Android 4.4.x (KitKat): Java 6
    <li>Android 1.5 (Cupcake) - Android 2.2.x (Froyo): Java 5
  </ul>
  </li>

  <li>
  Python 2.6 -- 2.7, which you can download from <a href="http://www.python.org/download/">python.org</a>.</p>
  </li>

  <li>
  GNU Make 3.81 -- 3.82, which you can download from <a href="http://ftp.gnu.org/gnu/make/">gnu.org</a>,</p>
  </li>

  <li>
  Git 1.7 or newer. You can find it at <a href="http://git-scm.com/download">git-scm.com</a>.</p>
  </li>

</ul>