When we compile samba with 'libclamav' useflag then it hides vscan_clamav_log_virus function samba 3.0.22 samba-vscan 0.3.6b
Created attachment 91110 [details, diff] Fixes undefined symbol error vscan_clamav_log_virus
Created attachment 91111 [details, diff] Ebuild patch which applies previous patch
Since there's no new version for oav for samba-3.0.25 and the samba developer refuse to stabilize the api to be able to install oav without the complete samba-tree, the oav-patch has been dropped for samba-3.0.25 and is not supported anymore, sorry.