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ghdl

Open-source simulator for the VHDL language. More information: http://ghdl.free.fr.

Analyze a VHDL source file and produce an object file:

ghdl -a {{filename.vhdl}}

Elaborate a design (where {{design}} is the name of a configuration unit, entity unit or architecture unit):

ghdl -e {{design}}

Run an elaborated design:

ghdl -r {{design}}

Run an elaborated design and dump output to a waveform file:

ghdl -r {{design}} --wave={{output.ghw}}

Check the syntax of a VHDL source file:

ghdl -s {{filename.vhdl}}

Display the help page:

ghdl --help