MS SQL Server connection from WHM/CPanel on Linux with PHP 5.3

Question

I'm trying desperately to get PDO working in PHP 5.3 from WHM 11.30.1 (build 4) CENTOS 5.6 x86_64 standard.

I'm using FreeTDS along with PDO_DBLIB. I compiled FreeTDS into /usr/local/freetds. I can successfully get PHP to compile when adding the flag:

--with-mssql=/usr/local/freetds

However, when I try and add in

--with-pdo-dblib=/usr/local/freetds

I just get a configure error that says:

configure: error: Directory /usr/local/freetds is not a FreeTDS installation directory