The lib files from the binary distribution is needed to build from the source code.
The primary files needed.

To build from source code you can do one of the following:

1) Import the source code into Eclipse
2) Use the ant script to build the jar

The Arduino source code is in the sketch_thermal_imager.

The LGPL based lti-civil library patch can be found here: 
http://sourceforge.net/tracker/?func=detail&aid=3520425&group_id=157914&atid=805731
The LGPL based RXTX library can be found here:
http://rxtx.qbang.org/

Both libraries were patched to add 64-bit Java support.
You can use the libraries from the separate binary distribution to compile
from the source code.