First of all check if i2c/smbus is present on your system https://sourceforge.net/p/lfsb/wiki/i2c-SMbus%20availability/
To build git version of lfsb:
1. Install git for your distribution.
2. Create account on sourceforge.
3. Clone repository:
#git clone ssh://USERNAME@git.code.sf.net/p/lfsb/code
For more information see
http://sourceforge.net/p/forge/documentation/Git/#how-to-clone-an-existing-repository
4. Build it with debug option:
#make debug
5. Install it :
#make install
6. Load i2c develop module (root priveleges):
#modprobe i2c-dev
7. If driver is not tested, try it with :
#lfsb driver_name
where driver_name is one of lfsb -s list record.
Create new topic in "Discussion" and post output there.