unixodbc: no ??

Hi,

Right after installation of freeTDS on Linux a:

tsql -C 

gives me:

unixodbc: no

This is surprising because an:

odbcinst -j

gives me:

unixODBC 2.2.11
DRIVERS..............: /etc/unixODBC/odbcinst.ini
SYSTEM DATA SOURCES..: /etc/unixODBC/odbc.ini
etc..

and the freeDTS documentation on http://www.freetds.org/userguide/config.htm 
states:

"..configure will detect the the DM and use its header (.h) files for ODBC 
constants and such. If your DM is installed in an unusual directory, you may 
have to provide the directory name as a parameter to configure."

Also, the TDS version is 5.0 from a tsql -C, while it's 4.2 in freetds.conf. I 
eventually overwrite the 4.2 of freetds.conf to 7.2 in my own connection string:
tds version = 7.2
but I'm not too sure if this ALSO overwriting the 5.0 value of the configure => 
make => make install.

Thanks in advance.