title: Point perl at specific freeTDS library
body: <p>We have multiple versions of perl and multiple versions of freeTDS compiled on the system.  Is there a way that I can tell perl exactly which freeTDS version to use, or is that somehow built in?</p>
  
  <p>The 'default' version of freeTDS that gets called when I "use DBI" in my perl script points to a version that doesn't seem to actually work properly.  I've discovered this via testing with the tsql command that comes with freeTDS.  if I run it from that version, failure.  If I run from another freeTDS version we have installed, it connects just fine.</p>
  
  <p>But now I don't know how to point perl at the other version of freeTDS.</p>