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parent: Advanced
nav_order: 97
---
# Eclipse Installation
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1. Table of contents
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This guide describes how to install [Eclipse] and install the necessary [Lua]
environment.

{: .note }
> Note that the [Lua] environment is not actively supported any more
> by Oracle. Especially the LDT plugin is not working when installed from the
> market place. The problem and solution is nicely described [in this topic].

## Prerequisites

* Download Eclipse from [eclipse.org].
* Download [dltk-core].
* Download or clone [MOOSE repository] (select branch you want `master` or `develop`).

## Install Eclipse

First you need to install [Eclipse]. It will ask you what kind of environment
you use, *e.g.* C++ or Java or something else. This does not really matter since
we want to use it for Lua and need to install the plugin for [Lua] later.

## Install dltk-core

Before you can install the LDT plugin, you first need to add dltk-core zip file
to the available software sites. Open eclipse, go to the help menu and follow
the steps in the image:

![eclipse-install-ldk-1](../images/install/eclipse/ldk-1.png)

This should then be in the available software sites.

![eclipse-install-ldk-2](../images/install/eclipse/ldk-2.png)

## Install LDT Plugin
Open eclipse and from the "Help" menu open the "Eclipse Marketplase":

![Eclipse-Install_Lua_1](../images/install/eclipse/lua-1.png)

In the "Search" tab find "lua" and install the "Lua Development Tools 1.4.x":

![Eclipse-Install_Lua_2](../images/install/eclipse/lua-2.png)

## Setup Lua Project for MOOSE
Now that Eclipse and LDT are installed, we need to add MOOSE as a LUA project.
Open Eclipse and from the "File" menu select "Other":

![Eclipse-Lua_Project_1](../images/install/eclipse/project-1.png)

In the wizard window that opens select "Lua Project":

![Eclipse-Lua_Project_2](../images/install/eclipse/project-2.png)

Setup the Lua project as described in the image. You need to specify the path to
where you downloaded the MOOSE repository:

![Eclipse-Lua_Project_3a](../images/install/eclipse/project-3.png)

From the "Project" tab select "Properties" and add `Moose/Moose Development/Moose`
to the build path as shown below:

![Eclipse-Lua_Project_4](../images/install/eclipse/project-4.png)

## Finally
Now you are done!
Check that your script explorer looks like in the image below and that the
intellisense is working when you open a MOOSE file:

![Eclipse-Lua_Project_5](../images/install/eclipse/project-5.png)

[Eclipse]: https://www.eclipse.org
[Lua]: https://www.lua.org/
[eclipse.org]: https://www.eclipse.org/downloads/
[dltk-core]: https://www.eclipse.org/downloads/download.php?file=/technology/dltk/downloads/drops/R5.7/R-5.7.1-201703020501/dltk-core-R-5.7.1-201703020501.zip
[MOOSE repository]: https://github.com/FlightControl-Master/MOOSE/
[in this topic]: https://www.eclipse.org/forums/index.php/t/1101907/