After reading this article on compiling from source, I am trying to build cwm Recovery from source for one of my android devices. I installed Ubuntu 14.04 LTS alongside windows 7 OS on my laptop. I am stuck up at repo syncing stage. It seems to never get completed. First, I made a mistake, started syncing without going to my working folder (cd ~/work_Fol) and I had to delete a huge amt of data say around 74 GB. Now I got into my working folder, and tried to use the command like 'repo sync', 'repo sync -j4' and even used 'repo sync -f' 3/4 times. But it got cut off mid-way several times (may be 15 to 20 times), and each time I restart with 'repo sync' command, my disk space seems to get shrinking each time. Now, almost 46 GB of space is nearing getting emptied, but still the 'repo sync' seems not completing. What wrong am I doing? I heard that, it will suffice 30 GB of disk space for this purpose out of which 15 GB is volume for android source code. I had searched many times at different sites, but unable to find proper direction and diagnostics. Please help.