Installing & Building RISC-V Toolchain

This blog walks you through how to install and build Installing & Building RISC-V Toolchain from scratch ¹

Prerequisites

• I assume you have installed git in your system

  sudo apt install git-all  # To install git

• Running a Linux Machine (This installation tested on Ubuntu 20 LTS)
• Make sure you have sufficient storage (around 30 GB free)
• You also need to install few dependencies

sudo apt-get install autoconf automake autotools-dev curl python3 libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev

Create a directory and clone

Create a new directory in your home folder

mkdir risc-v
cd risc-v
git clone https://github.com/riscv/riscv-gnu-toolchain

Create a directory in opt

mkdir /opt/riscv

Configure and make

./configure --prefix=/opt/riscv
make linux

This might take several hours depending on your machine configuration.

Your tool will be available on /opt/riscv/bin

Add /opt/riscv/bin to PATH

Open the ~/.bashrc file

sudo gedit ~/.bashrc 

Add below the almost at the end of the file and save it.

.....

export PATH="$PATH:/opt/riscv/bin"
.....

Now your RISC-V tools will be available without specifying the path.