Also a small instruction on how to build .debs has been tucked into the docs. There is the 'small' issue with dependencies though ...
https://github.com/randy-waterhouse/opentxs/blob/master/docs/INSTALL-MEMO-Linux.txt
############ Build a .deb package locally from linux src tar ball #############
#
#
$ sudo apt-get debuild cdbs autotools-dev dh-autoreconf
$ git clone https://github.com/randy-waterhouse/opentxs.git
$ cd opentxs
$ autoreconf -vif -Wall
$ ./configure
$ make distcheck
$ mv opentxs-0.88.e.tar.gz opentxs_0.88.e.orig.tar.gz
$ tar xf opentxs_0.88.e.orig.tar.gz
$ cd opentxs-0.88.e
$ cp -r ../debian .
$ debuild -us -uc -d
To install deb package:
$ sudo dpkg -i opentxs_0.88.e..deb