sqlippool symbol error

[Alexandre Chapellon]

I have compiled and installed FR2.1.1 on ubuntu 8.04.
FR starts correctly with no warning but when the server needs to process
the sqlippool module FR crashes with the following:

rlm_sql (myippool1): Reserving sql socket id: 4
[sqlippool1]     expand: START TRANSACTION -> START TRANSACTION
freeradius: symbol lookup error:
/usr/lib/freeradius/rlm_sqlippool-2.1.1.so: undefined symbol: rlm_sql_query

I use FR2.1.1 because it is supposed not to need linking against rlm_sql
anymore....
What am I missing?