== !OverSim Installation Instructions for Mac OS X ==

These instructions show you how to install !OverSim on Mac OS X 10.6 (Snow Leopard) to 10.8 (Mountain Lion).

=== 1. Installing X11 (Mountain Lion only) ===

OS X 10.8 (Mountain Lion) does not bundle X11 anymore, so some extra work is needed if you want to use the GUI. If you are using Snow Leopard or Lion, you can skip to step 2 (Installing OMNeT++)

   * Download the [http://xquartz.macosforge.org/landing/ XQuartz window system] and install it. 
   * Open a terminal and enter:
{{{
cd /usr/include
sudo ln -s /opt/X11/include/X11
}}}

=== 2. Installing OMNeT++ ===
   *  Download [http://omnetpp.org/omnetpp/doc_details/2245-omnet-422-source--ide-tgz OMNeT++ 4.2.2] from http://www.omnetpp.org/ after reading the [http://www.omnetpp.org/home/license License]
   * Create a new directory (in the following we assume you want to install OMNeT++ and OverSim to ~/sim/) and extract OMNeT++:
   {{{
  mkdir ~/sim
  cd ~/sim
  tar xzvf ~/Downloads/omnetpp-4.2.2-src.tgz
   }}}
   * Install OMNeT++ by the [http://omnetpp.org/doc/omnetpp/InstallGuide.pdf official instructions for OS X] (Chapter 3, PDF). Note: If you use Mountain Lion, just follow the Lion instructions. You should be fine since you installed X11 in Step 1.

=== 3. Installing GMP ===
After completing step 2 you have the required command line tools like g++.  Additionally, the GMP library is required for building Oversim. There are several package managers which let you install it, you can choose either: [http://www.finkproject.org/ Fink], [http://www.macports.org/ MacPorts], [http://mxcl.github.com/homebrew/ Homebrew] should all be fine. Personally, I use Homebrew, it's lightweight and awesome. If you are unsure, just follow the instructions.

   * Install Homebrew by pasting this line into a terminal:
{{{
ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go)"
}}}
      * Enter your admin password if needed 
      * If this did not work or you lack admin rights, visit [http://mxcl.github.com/homebrew/ the official Homebrew website] for up-to-date install instructions
   * Install GMP: 
{{{
brew install gmp
}}}


=== 4. Installing the INET Framework ===
   * Download the INET framework [http://omnetpp.org/download/contrib/models/inet-20111118-src.tgz inet-20111118-src.tgz] and extract in next to your OMNeT++ installation:
{{{
  cd ~/sim
  tar xzvf ~/Downloads/inet-20111118-src.tgz
}}}

    * Compile the INET framework:
{{{
  cd ~/sim/inet
  make makefiles
  make
}}}

=== 5. Installing OverSim ===
   * Download the latest !OverSim snapshot [http://www.oversim.org/chrome/site/OverSim-20121206.tgz OverSim-20121206.tgz] and extract in next to your OMNeT++ installation:
{{{
  cd ~/sim
  tar xzvf ~/Downloads/OverSim-20121206.tgz
}}}

   * Compile !OverSim (for ReaSE support read the following [wiki:OverSimReaSE instructions]):
{{{
  cd ~/sim/OverSim
  make makefiles
  make
}}}

Congratulations - now you should have a working !OverSim installation on your Mac!  For instructions how to use !OverSim look at OverSimUsage.

== How to use Eclipse to compile !OverSim ==
 
You can also use the included ''Eclipse IDE'' to compile !OverSim:
  * Start Eclipse with ''omnetpp''
  * Create a new workspace by choosing a new workspace directory on Eclipse startup
  * ''File''->''Import''->''General''->''Existing Projects into Workspace''->''Next''->select the ''inet'' directory->''Finish''
  * Repeat the same steps for the !OverSim project
  * The build process should start automatically - if not, hit ''⌘B''

To run !OverSim from Eclipse, create a configuration as shown below (thanks to Tobias Feldhaus for the screenshot):
[[Image(oversim_eclipse_osx.png,100%)]]