Jan, that might very likely be an older version of openssl with security issues (some things are removed) OR if you know the install is very,very recent it may well be that fpc lags a bit. Although it was recently updated by the fpc devel team.
Plz check at openssl.org if you have one of the recent versions.
I might add this is essential for this kind of software.
Also note 1.4 is build with 2.6.4 which hasn't been updated for these openssl changes.
In the case of openssl, you can use the openssl interfaces from trunk. There are no specific dependencies on the rest of trunk.