=Installing Prerequisites=
The recommended way to set up your system and build Echo is to do the following.
==On Ubuntu-based Linux==
- Ensure you have [[tools|Mercurial]] installed first.
- Ensure you have access to [[/diffusion|the repositories]].
- Ensure you have updated the host fingerprint as per the [[technical_documents/repositories/|Repositories]] page. This will avoid any certificate errors when attempting to clone.
- Clone the rEI Echo Installer repository into the desired location.
- Run `sudo ./SetupEcho.sh` and follow the prompts.
=Building Echo=
The installer script will attempt to build Echo for all targets that were selected (including Debug and Release for Linux). If you want, or need to, to build manually you can do one of the following:
# Navigate to the cloned EchoInstaller directory and run `./BuildEcho.sh`. The default platform is linux. You can specify the platform you want using `PLATFORMS=platformname ./BuildEcho.sh` where `platformname` is the lowercase name of the platform. At the time of this writing the following were available: `linux, android, wii, windowscross`.
# Open the `echo3` project in [[tools/netbeans|NetBeans]] and build using the IDE.