Tvheadend

Try to crosscompile tvheadend for a synology NAS using github/spksrc project. Standard config works perfect but when trying to compile with avahi-support, complete failure. I tried to chase down all dependencies but no luck!
Have also tried John Tornbloms version which claim to have built-in support for avahi and transcoding but same problem there. Any suggestions regarding how to fix this would be greatly appreciated!