ossaudio module needs an additional patch in order to compile it on Solaris because not all ioctls are supported (specificallySNDCTL_DSP_MAPINBUF andSNDCTL_DSP_MAPOUTBUF).

Other OpenSolaris forks are using the same patch as we do:
Oracle Solaris,OpenIndiana,OmniOS

(This is similar to recent#90211 made for NetBSD).