One of the things I have in mind is to be able to connect to a MS SQL database from Lisp in one of my projects. After spending a couple hours searching for a way to get freeTDS and odbcunix to work together, I found this blog in portuguese with a good step by step process.
I have to point out I didn't have to build freeTDS from the source. I got from the repository. I didn't use the tsql tool. Instead I used the isql one. Other than that everything is according to how I proceeded.
How to setup Freetds using Ubuntu