A Docker file for the PULP RISC-V GNU Compiler Toolchain

This repo contains Dockerfiles which will compile the most recent PULP RISC-V GNU Compiler Toolchain in different configurations.

Configurations

Soft Floats

Use this if the target prozessor has no hardware support for floats. Since every RISC-V prozessor supports soft floats this is the default configuration.

Hard Floats

Use this if the target prozessor has hardware support for floats.

Build

The folders soft-float and hard-float contain a script build.sh to build the image.

Docker Hub

There are multiple prebuild ready-to-use Docker images available on Docker Hub. Use it like this.

In your project, create a shell script for the RISC V compiler executable. You can name the file riscv32-unknown-elf-gcc which is the exact name of the RISC V compiler executable inside the Docker container. Put the following content inside of it.

#!/bin/sh
docker run --rm --entrypoint riscv32-unknown-elf-gcc --volume $PWD:/hostdir coderitter/pulp-riscv-gnu-toolchain "$@"

This call to docker run will create a temporary Docker container with the current directory mounted into Docker container. It then executes the RISC V compiler executable and forwards any parameters which were made when the script was executed.

The last step is to set the permission of the file so that is executable.

chmod a+x riscv32-unknown-elf-gcc

Now you can use the script as if the compiler itself was installed on your host system.

./riscv32-unknown-elf-gcc -std=c99 -march=rv32imfdcxpulpv2 src -o build/firmware