Problems with newer linux odbc drivers

I'm having some interesting problems with the newer (v 8 and v8.1) odbc
drivers. They compile fine on my RedHat 4 AS box. However, when I try to
have some third party applications link against them, they complain about:

/usr/local/lib/psqlodbc.so: undefined reference to
`SQLWritePrivateProfileString'
/usr/local/lib/psqlodbc.so: undefined reference to
`SQLGetPrivateProfileString'

However, if I drop down to the version 7 odbc driver, everything links fine.
Any idea on why I am getting the undefined references?

I have tried this with the following version:

psqlodbc-07.03.200 - complies and linkable

psqlodbc-08.00.0102 - complies but not linkable with above mentioned problem

psqlodbc-08.01.0101 - complies but not linkable with above mentioned problem

We would really like to use the newer odbc drivers as we are at the start of
a large project of upgrading to PostgreSQL 8.1 and upgrading our third party
software.

Thanks for any ideas/advice.

Chris