CHisel/Sbt generating C++ code where an undefined class is being used

[Javed Osmany]

Hello

I am trying to pipe-flush the Chisel front-end flow.

Taken the existing ALU block and generated the Chisel/Scala code and the corresponding scala TB and test structure (both files are attached).

Added the annotation in the TB to generate the Verilator back-end. This then generates the Verilator related code, SV &  C++ model for the Alu block.

I then try to compile the  SV code for the block, plus the C++ model with verilator as follows:

verilator -Wall --cc Kirin_Alu.sv --exe --build Kirin_Alu-harness.cpp

However, the first problem i am encountering is that the Kirin_alu-harness.cpp generated file is making use of undefined class. The VerilatedCov:: class is being referenced but is not defined anywhere.

Is this a Chisel/Sbt bug?

I am using the following:

Verilator 4.034 2020-05-03 rev v4.034

scalaVersion := "2.12.13"

val chiselVersion = "3.5.4"

Thanks in advance

JO