mySQL odbc driver

I have installed mySQL on QNX Neutrino 6.3 and it run. Now would connect to it with unixODBC but when I try to compile mysql connector 3.51 it failed with this message:

configure: error Could not use the single thread MySQL client library, please check config.log

This error suggests to me that you need to reconfigure MySQL enabling a multi-thread option.

I try with this options:

But without success, the error is the same.
NB: I don’t find option --enable-multi-thread anywhere