You need to download Xilinx libraries for Active-HDL from www.aldec.com. After downloading, install the library. This will install all the Xilinx library that you need and attach them with Active-HDL.

Also make sure you use proper library and use statement in your code - just like explained in the previous post. 

Aldec Active-HDL - No Default Binding
I installed Ubuntu 12.04 a month ago and am using it till now. I failed to notice that all this time there was no sound at all while running Ubuntu, even while playing a game in Wine. The weird thing is that only the startup sound comes when I log in (Indian/African drum tone), then comes the utter silence.

I tested both Digital Output (S/PDIF) and the speakers in the sound settings but can hear nothing.

Any help?
