Setting up a Linux build environmentThese instructions apply to all branches, including master.The Android build is routinely tested in house on recent versions of Ubuntu LTS (10.04), but most distributions should have the required build tools available. Reports of successes or failures on other distributions are welcome.For Gingerbread (2.3.x) and newer versions, including the master branch, a 64-bit environment is required. Older versions can be compiled on 32-bit systems.Note: It is also possible to build Android in a virtual machine. If you are running Linux in a virtual machine, you will need at least 16GB of RAM/swap and 30GB or more of disk space in order to build the Android tree.Detailed instructions for Ubuntu and MacOS follow. In general you will need:Python 2.5 -- 2.7, which you can download from python.org.GNU Make 3.81 -- 3.82, which you can download from gnu.org,JDK 6 if you wish to build Gingerbread or newer; JDK 5 for Froyo or older. You can download both from java.sun.com.Git 1.7 or newer. You can find it at git-scm.com.