SlackBuildsOrg/academic/verilator

Installing gperftools may improve compilation performance, but is not
required.

GTKWave is recommended for use at run-time, but not required.

Verilator supports integration with SystemC. However I don't need this
for my use case so I ahve not enabled it. If someone else wants to do
the legwork of porting it, I will gladly make the changes to this port
to  support it. -- Charles