Question

My first question : I wonder how you compile your vhdl file under ghdl ?

In c/c++, we use

• -Werror
• -Wunused-variable
• -Wunused-value
• -Wunused-function
• -Wfloat-equal -Wall

.My second question : are there a way one can use ghdl with those things ?

Answer 1

The user manual for GHDL would be a good starting point, specifically sections 3.1 (building) and 3.4 (warnings).

It is difficult to compare a set of C/C++ compiler flags to that of a VHDL compiler, but there may be some similar functionality between them, such as warnings become errors and alerting the user to unused design components. For example (from the documentation):

--warn-unused
   Emit a warning when a subprogram is never used. 
--warn-error
   When this option is set, warnings are considered as errors.