[ibr-dtn] Recompile and install IBR-DTN from source in OpenWRT

Hi,

I would like to install IBR-DTN from source in OpenWRT. I have tried to download it directly using the commands found here https://trac.ibr.cs.tu-bs.de/project-cm-2012-ibrdtn/wiki/source, under GIT repository. An error occurred while cloning: fatal: Unable to find remote helper for 'https' git openwrt

Can I recompile it directly in Openwrt ?

Or, if I follow these commands and install it in Ubuntu 12.04, how I plug it in OpenWRT after that?

Thanks,

Theodoros