(update available software lists) 									sudo apt-get update
(update all software to newest version)								sudo apt-get upgrade
(download and install support software)								sudo apt-get install libgmp-dev libmpfr-dev libmpc-dev
(download and install various development tools)					sudo apt-get install build-essential
(check version of gcc installed, if this works you have gcc now)	gcc -v
(check version of make, ditto above) 								make -v
(download and install java back end)								sudo apt-get install default-jre
(download and install java compilers)								sudo apt-get install default-jdk

if you need to set the $HOME variable for eclipse, follow instructions here at the bottom of the page.

https://www.digitalocean.com/community/tutorials/how-to-install-java-on-ubuntu-with-apt-get