rlm_cache no drirvers installed (3.0.17)

Hi everyone, I compiled Freeradius 3.1.17 on my laptop today. I use this version because it's the one still running on the live server... When I try to start it, I get the following error: /opt/cpr/etc/raddb/mods-enabled/cache_eap[4]: Could not link driver rlm_cache_rbtree: (null) /opt/cpr/etc/raddb/mods-enabled/cache_eap[4]: Make sure it (and all its dependent libraries!) are in the search path of your system's ld /opt/cpr/etc/raddb/mods-enabled/cache_eap[4]: Instantiation failed for module "cache_eap" The module files rlm_cache_rbtree.* are missing in the lib folder. I wonder, why they didn't get compiled... Is this a depency issue? I couldn't find out what lib-devs are missing. Any help is much appreciated! Best regards, Till