ClamAV binary needs .so from dev-package?

[Peter Bonivart]

The 0.93 release of Clam AntiVirus was a pretty bad release causing
troubles for many both building and running so they quickly got a
release candidate out for the next release supposed to fix all known
problems.

It now builds, passes the tests and I can run it and it doesn't show
any of the problems plaguing 0.93 but I stumbled on this instead,
freshclam is the binary used to update the signature database and for
some reason it wants the .so-file I have put in the dev package.

# freshclam -V
LibClamAV Warning: Cannot dlopen libclamunrar_iface: file not found -
unrar support unavailable
ClamAV 0.98.4-rc1/18999/Sat May 17 13:26:18 2014

If I install the dev package everything is fine. The below looks ok to
me so why doesn't the library use the .so.6-file you think?

# ls -ld /opt/csw/lib/*unrar_iface*
lrwxrwxrwx   1 root     root          28 May 17 19:22
/opt/csw/lib/libclamunrar_iface.so -> libclamunrar_iface.so.6.1.23
lrwxrwxrwx   1 root     root          28 May 16 18:56
/opt/csw/lib/libclamunrar_iface.so.6 -> libclamunrar_iface.so.6.1.23
-rwxr-xr-x   1 root     bin        11908 May 16 15:58
/opt/csw/lib/libclamunrar_iface.so.6.1.23

/peter