install FPGA icestorm toolchain (WSL Ubuntu)

icestorm toolchain

# don't just copy & paste, there's a prompt for the first sudo command
sudo apt-get update

sudo apt-get install build-essential clang bison flex libreadline-dev \
     gawk tcl-dev libffi-dev git mercurial graphviz \
     xdot pkg-config python python3 libftdi-dev

# create workspace
mkdir -p ~/workspace 
cd ~/workspace/

# icestorm
git clone https://github.com/cliffordwolf/icestorm.git icestorm
cd icestorm
make -j$(nproc)
sudo make install

cd ~/workspace/

# arachne-pnr
git clone https://github.com/cseed/arachne-pnr.git arachne-pnr
cd arachne-pnr
make -j$(nproc)
sudo make install

cd ~/workspace/

# yosys
git clone https://github.com/cliffordwolf/yosys.git yosys
cd yosys
make -j$(nproc)
sudo make install