The newer versions of the Xilinx tools (after 5.2 or so) run natively under linux. They're not free, but reasonably priced. This takes care of place & route. For simulation, there is a VHDL front-end to gcc which works pretty well (or you can fork some serious cash for ModelSim which is also available for Linux).
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The Phantom is a digital camera. For a shameless manufacturer plug link see http://www.visionresearch.com/.
The newer versions of the Xilinx tools (after 5.2 or so) run natively under linux. They're not free, but reasonably priced. This takes care of place & route. For simulation, there is a VHDL front-end to gcc which works pretty well (or you can fork some serious cash for ModelSim which is also available for Linux).