Prerequisites
sudo apt-get install iverilog git perl python3 make autoconf g++ flex \
bison ccache libgoogle-perftools-dev numactl perl-doc \
libfl2 libfl-dev zlibc zlib1g zlib1g-dev
git clone https://github.com/verilator/verilator
unset VERILATOR_ROOT
cd verilator
git checkout stable
git pull origin stable
autoconf
./configure
make -j `nproc`
sudo make install