Enterprise Linux installation of ODBC is easy.
yum install unixODBC unixODBC-devel freetds freetds-devel perl-DBD-ODBC perl-local-lib
Configuration isn't much harder. You'll need to edit UnixODBC's driver list to add FreeTDS as an available driver.
- vim /etc/odbcinst.ini
# Driver from the FreeTDS package
# Setup from the unixODBC package
[FreeTDS]
Description = ODBC for FreeTDS
Driver = /usr/lib64/libtdsodbc.so
Setup = /usr/lib64/libtdsS.so.2
Driver64 = /usr/lib64/libtdsodbc.so
Setup64 = /usr/lib64/libtdsS.so.2
FileUsage = 1